Amphipoda: An order of mostly marine CRUSTACEA containing more than 5500 species in over 100 families. Like ISOPODA, the other large order in the superorder Peracarida, members are shrimp-like in appearance, have sessile compound eyes, and no carapace. But unlike Isopoda, they possess thoracic gills and their bodies are laterally compressed.Crustacea: A large subphylum of mostly marine ARTHROPODS containing over 42,000 species. They include familiar arthropods such as lobsters (NEPHROPIDAE), crabs (BRACHYURA), shrimp (PENAEIDAE), and barnacles (THORACICA).Senna Extract: Preparations of Cassia senna and C. angustifolia (see SENNA PLANT). They contain sennosides, which are anthraquinone type CATHARTICS and are used in many different preparations as laxatives.Senna Plant: A plant genus of the family FABACEAE. SENNA EXTRACT is obtained from members of this genus. Members contain ANTHRAQUINONES and have been an ingredient in laxatives (CATHARTICS). Many species of the CASSIA genus have been reclassified into this genus. This bush should not be confused with the Cassia tree (CINNAMOMUM).Biodiversity: The variety of all native living organisms and their various forms and interrelationships.Conservation of Natural Resources: The protection, preservation, restoration, and rational use of all resources in the total environment.Ecosystem: A functional system which includes the organisms of a natural community together with their environment. (McGraw Hill Dictionary of Scientific and Technical Terms, 4th ed)NorwayExtinction, Biological: The ceasing of existence of a species or taxonomic groups of organisms.Geography: The science dealing with the earth and its life, especially the description of land, sea, and air and the distribution of plant and animal life, including humanity and human industries with reference to the mutual relations of these elements. (From Webster, 3d ed)Cooperative Behavior: The interaction of two or more persons or organizations directed toward a common goal which is mutually beneficial. An act or instance of working or acting together for a common purpose or benefit, i.e., joint action. (From Random House Dictionary Unabridged, 2d ed)Isopoda: One of the largest orders of mostly marine CRUSTACEA, containing over 10,000 species. Like AMPHIPODA, the other large order in the superorder Peracarida, members are shrimp-like in appearance, have sessile compound eyes, and no carapace. But unlike Amphipoda, they possess abdominal pleopods (modified as gills) and their bodies are dorsoventrally flattened.Mauritius: One of the Indian Ocean Islands, east of Madagascar. Its capital is Port Louis. It was discovered by the Portuguese in 1505, occupied by the Dutch 1598-1710, held by the French 1715-1810 when the British captured it, formally ceded to the British in 1814, and became independent in 1968. It was named by the Dutch in honor of Maurice of Nassau, Prince of Orange (1567-1625). (From Webster's New Geographical Dictionary, 1988, p742 & Room, Brewer's Dictionary of Names, 1992, p341)Charadriiformes: An order of BIRDS including over 300 species that primarily inhabit coastal waters, beaches, and marshes. They are comprised of shorebirds, gulls, and terns.South Africa: A republic in southern Africa, the southernmost part of Africa. It has three capitals: Pretoria (administrative), Cape Town (legislative), and Bloemfontein (judicial). Officially the Republic of South Africa since 1960, it was called the Union of South Africa 1910-1960.MuseumsMadagascar: One of the Indian Ocean Islands off the southeast coast of Africa. Its capital is Antananarivo. It was formerly called the Malagasy Republic. Discovered by the Portuguese in 1500, its history has been tied predominantly to the French, becoming a French protectorate in 1882, a French colony in 1896, and a territory within the French union in 1946. The Malagasy Republic was established in the French Community in 1958 but it achieved independence in 1960. Its name was changed to Madagascar in 1975. (From Webster's New Geographical Dictionary, 1988, p714)Indian Ocean Islands: Numerous islands in the Indian Ocean situated east of Madagascar, north to the Arabian Sea and east to Sri Lanka. Included are COMOROS (republic), MADAGASCAR (republic), Maldives (republic), MAURITIUS (parliamentary democracy), Pemba (administered by Tanzania), REUNION (a department of France), and SEYCHELLES (republic).AfricaParacoccidioides: A mitosporic fungal genus. P. brasiliensis (previously Blastomyces brasiliensis) is the etiologic agent of PARACOCCIDIOIDOMYCOSIS.Victoria: A state in southeastern Australia, the southernmost state. Its capital is Melbourne. It was discovered in 1770 by Captain Cook and first settled by immigrants from Tasmania. In 1851 it was separated from New South Wales as a separate colony. Self-government was introduced in 1851; it became a state in 1901. It was named for Queen Victoria in 1851. (From Webster's New Geographical Dictionary, 1988, p1295 & Room, Brewer's Dictionary of Names, p574)Altitude: A vertical distance measured from a known level on the surface of a planet or other celestial body.Altitude Sickness: Multiple symptoms associated with reduced oxygen at high ALTITUDE.Mountaineering: A sport involving mountain climbing techniques.Decapoda (Crustacea): The largest order of CRUSTACEA, comprising over 10,000 species. They are characterized by three pairs of thoracic appendages modified as maxillipeds, and five pairs of thoracic legs. The order includes the familiar shrimps, crayfish (ASTACOIDEA), true crabs (BRACHYURA), and lobsters (NEPHROPIDAE and PALINURIDAE), among others.Acclimatization: Adaptation to a new environment or to a change in the old.Phylogeny: The relationships of groups of organisms as reflected by their genetic makeup.

Simulating species loss following perturbation: assessing the effects on process rates. (1/121)

We removed stream-living macroinvertebrate shredder species in the sequences in which they are predicted to disappear, in response to two common types of anthropogenic disturbances: acidification and organic pollution, and analysed the effects on leaf breakdown rates. The experiment was performed in field microcosms using three shredder species. Species identity significantly affected leaf breakdown rates, while species richness per se was non-significant. The simulated sequential species loss showed large effects on leaf breakdown rates, with observed rates being significantly higher than expected from single-species treatments in two, out of four, two-species, and in all four three-species treatments. The invertebrates used in this study were taxonomically distinct (Insecta: Plecoptera and Trichoptera; Crustacea: Amphipoda), and of different sizes, hence a high degree of complementarity was probably present. A method to study the effects of species loss, characteristic of perturbation type, could be more useful than a random approach when investigating the impact of perturbation. Our results may have general applicability for investigations on the effects of diversity loss on ecosystem functioning in any ecosystem exposed to human perturbations, given that the order of extinction is known or can easily be assessed.  (+info)

The sun compass of the sandhopper Talitrus saltator: the speed of the chronometric mechanism depends on the hours of light. (2/121)

Experiments on solar orientation were conducted with adult amphipods (Talitrus saltator) subjected to a reduction and/or phase shift of the hours of light (L) or dark (D) with respect to the natural photoperiod: 15 h:9 h L:D (controls), 15 h:9 h inverted (i.e. phase-shifted by 12 h and tested with the sun during the subjective night), 4 h:20 h, 20 h:4 h inverted. The sandhoppers were released in a confined environment, and individual orientation angles were recorded. The results confirm the continuous operation, through the entire 24-h period, of a chronometric mechanism of compensation for apparent solar motion. They show excellent agreement with a recently proposed model of compensation for the sun at constant (not differential) speed and they demonstrate a dependence of the speed of the chronometric mechanism on the L:D ratio in the 24-h period.  (+info)

The mechanisms of morph determination in the amphipod Jassa: implications for the evolution of alternative male phenotypes. (3/121)

The proximal basis for and the maintenance of alternative male reproductive strategies and tactics are generally not understood in most species, despite the occurrence of male polymorphism across many taxa. In the marine amphipod Jassa marmorata, males differ in morphology as well as behaviour. This dimorphism corresponds to two contrasting reproductive strategies: small sneaker males or 'minors', and large fighter males or 'majors'. This study uses quantitative genetic analyses in conjunction with experimental manipulations to assess the relative importance of genetic versus environmental factors in the determination and maintenance of these alternative mating strategies. Heritability analyses indicated the reproductive phenotypes do not reflect genetic differences between dimorphic males. By contrast, morph determination was significantly affected by diet quality. Majors essentially only developed on high-protein diets. Field studies also identified a strong correlation between seasonal shifts in the relative proportions of morphs and changes in food (i.e. phytoplankton) quantity and composition, corroborating that diet cues the switch between alternative reproductive tactics. Moreover, the comparison of major and minor growth trajectories identified a heterochronic shift in maturation times between morphs, indicating that ecological selective pressures, rather than just sexual selection, may be involved in the maintenance of this conditional strategy.  (+info)

Effects of Microphallus papillorobustus (Platyhelminthes: Trematoda) on serotonergic immunoreactivity and neuronal architecture in the brain of Gammarus insensibilis (Crustacea: Amphipoda). (4/121)

The larval flatworm Microphallus papillorobustus encysts in the protocerebrum of its intermediate host, Gammarus insensibilis, and changes the gammarid's responses to mechanical and photic stimuli. The resulting aberrant escape behaviour renders infected gammarids more susceptible to predation by birds, the definitive hosts of the parasite. We used immunocytochemical methods to explore the mechanisms underlying these subtle behavioural modifications. Whole mounts of gammarid brains were labelled with fluorescent anti-serotonin and anti-synapsin antibodies and viewed using confocal microscopy. Two types of change were observed in infected brains: the intensity of the serotonergic label was altered in specific regions of the brain, and the architecture of some serotonergic tracts and neurons was affected. A morphometric analysis of the distribution of the label showed that serotonergic immunoreactivity was decreased significantly (by 62%) in the optic neuropils, but not in the olfactory lobes, in the presence of the parasite. In addition, the optic tracts and the tritocerebral giant neurons were stunted in parasitized individuals. Published evidence demonstrates changes in serotonin levels in hosts ranging from crustaceans to mammals infected by parasites as diverse as protozoans and helminths. The present study suggests that the degeneration of discrete sets of serotonergic neurons might underlie the serotonergic imbalance and thus contribute to host manipulation.  (+info)

Comparison of Artificial Neural Network (ANN) Model Development Methods for Prediction of Macroinvertebrate Communities in the Zwalm River Basin in Flanders, Belgium. (5/121)

Modelling has become an interesting tool to support decision making in water management. River ecosystem modelling methods have improved substantially during recent years. New concepts, such as artificial neural networks, fuzzy logic, evolutionary algorithms, chaos and fractals, cellular automata, etc., are being more commonly used to analyse ecosystem databases and to make predictions for river management purposes. In this context, artificial neural networks were applied to predict macroinvertebrate communities in the Zwalm River basin (Flanders, Belgium). Structural characteristics (meandering, substrate type, flow velocity) and physical and chemical variables (dissolved oxygen, pH) were used as predictive variables to predict the presence or absence of macroinvertebrate taxa in the headwaters and brooks of the Zwalm River basin. Special interest was paid to the frequency of occurrence of the taxa as well as the selection of the predictors and variables to be predicted on the prediction reliability of the developed models. Sensitivity analyses allowed us to study the impact of the predictive variables on the prediction of presence or absence of macroinvertebrate taxa and to define which variables are the most influential in determining the neural network outputs.  (+info)

Parasite-mediated predation between native and invasive amphipods. (6/121)

Parasites can structure biological communities directly through population regulation and indirectly by processes such as apparent competition. However, the role of parasites in the process of biological invasion is less well understood and mechanisms of parasite mediation of predation among hosts are unclear. Mutual predation between native and invading species is an important factor in determining the outcome of invasions in freshwater amphipod communities. Here, we show that parasites mediate mutual intraguild predation among native and invading species and may thereby facilitate the invasion process. We find that the native amphipod Gammarus duebeni celticus is host to a microsporidian parasite, Pleistophora sp. (new species), with a frequency of infection of 0-90%. However, the parasite does not infect three invading species, G. tigrinus, G. pulex and Crangonyx pseudogracilis. In field and laboratory manipulations, we show that the parasite exhibits cryptic virulence: the parasite does not affect host fitness in single-species populations, but virulence becomes apparent when the native and invading species interact. That is, infection has no direct effect on G. d. celticus survivorship, size or fecundity; however, in mixed-species experiments, parasitized natives show a reduced capacity to prey on the smaller invading species and are more likely to be preyed upon by the largest invading species. Thus, by altering dominance relationships and hierarchies of mutual predation, parasitism strongly influences, and has the potential to change, the outcome of biological invasions.  (+info)

Reduced oxygen at high altitude limits maximum size. (7/121)

The trend towards large size in marine animals with latitude, and the existence of giant marine species in polar regions have long been recognized, but remained enigmatic until a recent study showed it to be an effect of increased oxygen availability in sea water of a low temperature. The effect was apparent in data from 12 sites worldwide because of variations in water oxygen content controlled by differences in temperature and salinity. Another major physical factor affecting oxygen content in aquatic environments is reduced pressure at high altitude. Suitable data from high-altitude sites are very scarce. However, an exceptionally rich crustacean collection, which remains largely undescribed, was obtained by the British 1937 expedition from Lake Titicaca on the border between Peru and Bolivia in the Andes at an altitude of 3809 m. We show that in Lake Titicaca the maximum length of amphipods is 2-4 times smaller than other low-salinity sites (Caspian Sea and Lake Baikal).  (+info)

Dispersal of the Ponto-Caspian amphipod Echinogammarus ischnus: invasion waves from the Pleistocene to the present. (8/121)

The geographical range of the amphipod crustacean Echinogammarus ischnus has expanded over the past century from the Ponto-Caspian region to Western Europe, the Baltic Sea, and the Great Lakes of North America. The present study explores the phylogeographic patterns of this amphipod across its current distribution, based on an examination of nucleotide diversity in the mitochondrial cytochrome c oxidase subunit I (COI) gene. Marked genetic divergence exists among populations of E. ischnus from the Black and Caspian Seas, as well as those from the drainage system of the Black Sea. This divergence suggests the prolonged geographic isolation of these native populations, reflecting the limited dispersal capability of E. ischnus. By contrast, invading populations are characterized by a lack of genetic variation; a single mitochondrial genotype of Black Sea origin has colonized sites from the Rhine River to North America. The dispersal pattern in E. ischnus is very similar to that in the Ponto-Caspian cladoceran Cercopagis pengoi. Despite their contrasting life history strategies, these invading species followed the same route of invasion from the northern Black Sea to the Baltic Sea region, and subsequently to North America.  (+info)

*Gammaridea

Crustacea: Amphipoda). Zootaxa 3610 (1): 1-80. Senticaudata WoRMS World Amphipoda Database: Introduction (accessed 26 April ... Gammaridea is one of the suborders of the order Amphipoda, comprising small, shrimp-like crustaceans. Until recently, in a ... Amphipoda)". Journal of Crustacean Biology 23 (2): 443-485. doi:10.1651/0278-0372 Lowry, J.K. & Myers, A.A. (2013) A Phylogeny ...

*Amphipoda

"Amphipoda". World Amphipoda database. World Register of Marine Species. Retrieved 2014-05-23. "Amphipoda". Integrated Taxonomic ... The name Amphipoda comes, via the New Latin amphipoda, from the Greek roots ἀμφί ("different") and πούς ("foot"), in reference ... Media related to Amphipoda at Wikimedia Commons Data related to Amphipoda at Wikispecies. ... Amphipoda is an order of malacostracan crustaceans with no carapace and generally with laterally compressed bodies. Amphipods ...

*Glyphipterix amphipoda

... is a species of sedge moth in the genus Glyphipterix. It was described by Edward Meyrick in 1920. ...

*Caprellinoides elegans

Amphipoda. KH Barnard - 1932 Biodiversity of the Weddell Sea: macrozoobenthic species (demersal fish included) sampled during ...

*Senticaudata

Crustacea: Amphipoda). Zootaxa 3610 (1): 1-80. Horton, T. (2013). Senticaudata World Register of Marine Species. ... Senticaudata is one of the four suborders of the crustacean order Amphipoda (aka scuds, sideswimmers). It includes some 5000 ... Introduction World Amphipoda Database (read 23 March 2014) Lowry, J.K. & Myers, A.A. (2013) A Phylogeny and Classification of ...

*Caprelloidea

"Caprelloidea". World Amphipoda database. World Register of Marine Species. Retrieved November 2013. Check date values in: , ... Crustacea: Amphipoda). Zootaxa 3610 (1): 1-80. Senticaudata WoRMS Media related to Caprelloidea at Wikimedia Commons Data ... Caprelloidea is a superfamily of marine crustaceans in the order Amphipoda. It includes "untypical" forms of amphipods, such as ... Amphipoda)". Journal of Crustacean Biology. 23: 443-485. doi:10.1163/20021975-99990353. Lowry, J.K. & Myers, A.A. (2013) A ...

*Corophiida

"Corophiida". World Amphipoda database. World Register of Marine Species. Retrieved Feb 1, 2014. Sara E. LeCroy; Rebeca Gasca; ... Crustacea: Amphipoda). Zootaxa 3610 (1): 1-80. Data related to Corophiida at Wikispecies. ... Amphipoda)". Journal of Crustacean Biology. 23 (2): 443-485. doi:10.1651/0278-0372(2003)023[0443:APAANC]2.0.CO;2. JSTOR 1549648 ... Ignacio Winfield; Manuel Ortiz; Elva Escobar-Briones (2009). "Amphipoda (Crustacea) of the Gulf of Mexico". In Darryl L. Felder ...

*Urothoe

"Urothoe". World Amphipoda database. World Register of Marine Species. Retrieved July 25, 2011. "Urothoe". Marine Macrofauna ...

*Caprella

"Caprella Lamarck, 1801". World Amphipoda database. World Register of Marine Species. Retrieved February 1, 2012. Jean-Baptiste ...

*Peramphithoe femorata

"Peramphithoe femorata (Krøyer, 1845)". World Amphipoda database. World Register of Marine Species. Retrieved 2014-06-06. John, ...

*Podoceridae

"Podoceridae". World Amphipoda database. World Register of Marine Species. Retrieved February 27, 2011. ...

*Hyperiidae

"Hyperiidae". World Amphipoda database. World Register of Marine Species. Retrieved June 12, 2011. ...

*Corophiidae

"Corophiidae". World Amphipoda database. World Register of Marine Species. Retrieved December 6, 2010. crustacea.net: ...

*Phronima

"Phronima Latreille, 1802". World Amphipoda database. World Register of Marine Species. Retrieved October 11, 2010. "Animal ... Amphipoda, Cumacea, Mysidacea. Volume 2, Part 2 of Crustacea: Malacostraca in Zoological catalogue of Australia. CSIRO ...

*Apocorophium lacustre

"Apocorophium lacustre (Vanhöffen, 1911)". World Amphipoda database. World Register of Marine Species. Retrieved November 27, ...

*Anisogammaridae

A new genus and three new species of Anisogammaridae (Crustacea, Amphipoda) from the ancient lake Fuxian Hu in Yunnan, China". ... "Anisogammaridae". World Amphipoda database. World Register of Marine Species. Retrieved April 17, 2012. Ko Tomikawa; Norio ... Amphipoda, Anisogammaridae) deduced from mitochondrial COI and 12S sequences". Zoological Science. 24 (2): 173-180. doi:10.2108 ... "A new case of intralacustrine radiation in Amphipoda. ... Amphipoda) from Yunnan, China". Acta Zootaxonomica Sinica. 30 ( ...

*Talitridae

"Talitridae". World Amphipoda database. World Register of Marine Species. Retrieved February 18, 2011. CS1 maint: Multiple names ... Amphipoda: Talitridae) from western Africa and south-western Europe" (PDF excerpt). Zootaxa. 2825: 55-68. J. K. Lowry & ... Amphipoda, Talitridae)" (PDF excerpt). Zootaxa. 3451: 60-67. Media related to Talitridae at Wikimedia Commons "Sandhopper". New ...

*Caprella mutica

A.A. Myers; J.K. Lowry (2003). "A Phylogeny and a New Classification of the Corophiidea Leach, 1814 (Amphipoda)". Journal of ... native caprellids (Amphipoda, Crustacea) (PDF). Alfred Wegener Institute for Polar and Marine Research (AWI). ... Crustacea, Amphipoda, Caprellidea)" (PDF). Bulletin Zoölogisch Museum. University of Amsterdam. 15 (1): 1-4. Marco Faasse (2005 ... Karin Boos; Gail V. Ashton; Elizabeth J. Cook (2011). "The Japanese Skeleton Shrimp Caprella mutica (Crustacea, Amphipoda): A ...

*Themisto (genus)

Peracarida : Amphipoda, Cumacea, Mysidacea. Volume 19.2B of Zoological catalogue of Australia. CSIRO Publishing. pp. 307-316. ... "Themisto Guérin, 1825". World Amphipoda database. World Register of Marine Species. Retrieved 22 July 2016. James K. Lowry ( ... Amphipoda, Hyperiidae) at South Georgia, Antarctica". Deep-Sea Research Part II: Topical Studies in Oceanography. 59/60: 117- ...

*Pallaseidae

"Pallaseidae". World Amphipoda database. World Register of Marine Species. Retrieved December 10, 2011. ... R. M. Kamaltynov (2002). "Amfipody (Amphipoda: Gammaroidea)". In O. A. Timoshkin. Index of animal species inhabiting Lake ...

*Pseudoniphargus

"Pseudoniphargus Chevreux, 1901". World Amphipoda database. World Register of Marine Species. Retrieved June 1, 2011. ...

*Caprella bathytatos

Joel W. Martin & Gary Pettit (1998). "Caprella bathytatos new species (Crustacea, Amphipoda, Caprellidae), from the mouthparts ... "Caprella bathytatos Martin & Pettit, 1998". World Amphipoda database. World Register of Marine Species. Retrieved February 1, ...

*Amphilochus (genus)

Amphilochus is a genus of crustaceans in the Amphipoda order, containing the following species: Amphilochus ascidicola Martin, ... "Amphilochus Bate, 1862". World Amphipoda database. World Register of Marine Species. Retrieved July 30, 2010. ...

*Talitrus

"Talitrus Latreille & Bosc, 1802". World Amphipoda database. World Register of Marine Species. Retrieved August 31, 2011. ...

*Platorchestia

"Platorchestia Bousfield, 1982". World Amphipoda database. World Register of Marine Species. Retrieved January 12, 2012. ...
[Lorsque Gammarus pulex (L.) (Amphipoda) se nourrit de l'algue Nitella (Chlorophyceae, Charales), son comportement se caractérise de la manière suivante: 1) les appendices antérieurs empoignent l'algue; 2) la saillie, à la partie inférieure de la tête, est pressée contre l'algue; 3) le corps entier est soumis à de fortes vibrations. Le paroi cellulaire et les chloroplastes de Nitella sont ingurgités et il en est de même de ses épiphytes, c'est à dire Bulbochaete, Coleochaete scutata, Eunotia veneris et Oedogononium. L'analyse des excréments prouve cependant que la matière soumise à la digestion provient uniquement des chloroplastes de Nitella et des contenus cellulaires de Coleochaete scutata et Eunotia aeneris., Lorsque Gammarus pulex (L.) (Amphipoda) se nourrit de l'algue Nitella (Chlorophyceae, Charales), son comportement se caractérise de la manière suivante: 1) les appendices antérieurs empoignent l'algue; 2) la saillie, à la partie inférieure
Specification of the germ line is an essential event during the embryonic development of sexually reproducing animals, as germ line cells are uniquely capable of giving rise to the next generation. Animal germ cells arise through either inheritance of a specialized, maternally supplied cytoplasm called germ plasm or though inductive signaling by somatic cells. Our understanding of germ cell determination is based largely on a small number of model organisms. To better understand the evolution of germ cell specification, we are investigating this process in the amphipod crustacean Parhyale hawaiensis. Experimental evidence from previous studies demonstrated that Parhyale germ cells are specified through inheritance of a maternally supplied cytoplasmic determinant; however, this determinant has not been identified. Here we show that the one-cell stage Parhyale embryo has a distinct cytoplasmic region that can be identified by morphology as well as the localization of germ line-associated RNAs. Removal
The talitrid amphipod Talitrus saltator has a wide distribution along European Atlantic and Mediterranean sandy shores. Previous research had estimated genetic differences among populations with iso-enzyme electrophoresis, as well as differences in behavioural adaptation related to ecological features. In this study morphometric differences among four Mediterranean (Italian coasts) and three Atlantic (Portuguese and Welsh coasts) populations were estimated, which may give information on population dynamics and adaptability to environmental constraints. The localities chosen differed with regard to the following characteristics: sheltered/exposed shorelines, tidal/non-tidal shores, presence/absence of detritus, Atlantic/Mediterranean climate, high/low human frequentation. Samples of each population were collected in a standardized way and fresh individuals were weighed, their body lengths and eye diameters were measured, and the number of eggs in the female brood-pouches and the articles of each antenna
Citation: Väinölä, R. (2015). Garjajewia cabanisii pleshanovi Tachteew & Levashkevich, 2006. In: Horton, T.; Lowry, J.; De Broyer, C.; Bellan-Santini, D.; Coleman, C. O.; Daneliya, M.; Dauvin, J-C.; Fišer, C.; Gasca, R.; Grabowski, M.; Guerra-García, J. M.; Hendrycks, E.; Holsinger, J.; Hughes, L.; Jaume, D.; Jazdzewski, K.; Just, J.; Kamaltynov, R. M.; Kim, Y.-H.; King, R.; Krapp-Schickel, T.; LeCroy, S.; Lörz, A.-N.; Senna, A. R.; Serejo, C.; Sket, B.; Tandberg, A.H.; Thomas, J.; Thurston, M.; Vader, W.; Väinölä, R.; Vonk, R.; White, K.; Zeidler, W. (2017). World Amphipoda Database. Accessed at http://www.marinespecies.org/amphipoda/aphia.php?p=taxdetails&id=737040 on 2017-09-19 ...
Citation: Horton, T. (2013). Bogidiella totakura Senna, Mugnai & Reddy, 2013. In: Horton, T.; Lowry, J.; De Broyer, C.; Bellan-Santini, D.; Coleman, C. O.; Daneliya, M.; Dauvin, J-C.; Fišer, C.; Gasca, R.; Grabowski, M.; Guerra-García, J. M.; Hendrycks, E.; Holsinger, J.; Hughes, L.; Jaume, D.; Jazdzewski, K.; Just, J.; Kamaltynov, R. M.; Kim, Y.-H.; King, R.; Krapp-Schickel, T.; LeCroy, S.; Lörz, A.-N.; Senna, A. R.; Serejo, C.; Sket, B.; Tandberg, A.H.; Thomas, J.; Thurston, M.; Vader, W.; Väinölä, R.; Vonk, R.; White, K.; Zeidler, W. (2017). World Amphipoda Database. Accessed at http://www.marinespecies.org/amphipoda/aphia.php?p=taxdetails&id=740246 on 2017-09-21 ...
The genus Gammarus (Amphipoda) is one of the most speciose genera of Crustacea, yet much uncertainty remains concerning taxonomy and systematic relationships, particularly for brackish and marine forms. We used DNA barcode sequences from the mitochondrial cytochrome c oxidase I (COI) gene to probe the taxonomy of prominent members of marine and brackish water Gammarus of the North Atlantic, Baltic, Mediterranean and Black Seas. We investigated 16 putative Gammarus spp. at an average number of 9 specimens per species. This constitutes the most taxonomically and geographically comprehensive molecular study of marine Gammarus to date. Average between-species sequence divergence (26.8%) was much higher than intraspecific distances (0.8%), enabling clear molecular species identification and highlighting several possible misidentifications from previously published studies. Specimens of Gammarus aequicauda and G. insensibilis from the Black Sea were at least 14% distant from their putative ...
The effects of feeding two alternative live prey Hyalella azteca (freshwater gammarids) and Hyale media (marine gammarids) to Octopus maya hatchlings were compared with feeding adult Artemia sp., traditionally used during the first weeks of the life cycle. Hatchlings were fed ad libitum these three live preys during the first 15 days, and a paste elaborated with fresh squid and shrimp during the next 15 days when hatchling can be fed prepared diets. Weight (g) and specific growth rates (% day−1) were determined every 15 days. Octopus maya hatchlings fed with marine gammarids grew larger (6.9 ± 0.2% day−1) compared with hatchlings fed Artemia sp. or freshwater gammarids (4.8 ± 0.2% and 5.0 ± 0.3% day−1 respectively). Survival was also higher (92.2 ± 6.8%) for hatchlings fed marine gammarids, than for those fed Artemia sp. (74.5 ± 23.8%) or freshwater gammarids (41.2 ± 21.2%). The content of acylglycerides, cholesterol and proteins in O. maya fed marine gammarids suggested a better ...
Koch, A. (2011): Vergleichende Ökologie von Gammarus locusta und Echinogammarus marinus (Crustacea, Amphipoda) , Diplom thesis ...
NO. 5 BARNARD: AMPHIPODA 33 be connected with the descent of organic materials, especially detached algae, down the canyon axes. Until non-canyon slopes can be sampled, these displacements must remain figmentary, but the rather restricted depth distribution of these species on the coastal shelf suggest that they are abnormally displaced. 11. The shallowest nearshore basins support a large proportion of eurybathic species, suggesting an association between eurybathicity and tolerance to environmental stresses such as low oxygen values. Nevertheless, only 9 species of amphipods have been collected in the nearshore basins. 12. Deeper offshore basins with oxygen values higher than the shallower nearshore basins have a more diversified amphipod fauna and fewer shelf species. 13. The bathyal amphipod fauna of southern California has little connection with the local sublittoral fauna. Apparently the bathyal members have been derived from cold-temperate sublittoral faunas that have submerged towards the ...
Myanmarorchestia victoria sp. nov. (Crustacea, Amphipoda, Talitridae), a new species of landhopper from the high altitude forests in Myanmar
This dataset contains the digitized treatments in Plazi based on the original journal article Broyer, De (2008): Alicellidae and Valettiopsidae, two new callynophorate families (Crustacea: Amphipoda). Zootaxa 1843: 57-66, DOI: 10.5281/zenodo.183251 ...
Beermann, J. (2009): Zur Biologie und Nischensegregation Helgoländer Jassa-Arten Leach (Crustacea, Amphipoda) , Diplom thesis, Freie Universität Berlin ...
Two new species of maerid and melitid Amphipoda, Maeropsis paphavasitae and Rotomelita longipropoda, respectively, collected from a seagrassbed of the Lower Gulf of Thailand, are described. Maeropsis paphavasitae is characterized by it seven teeth on the palm of gnathopod 2 and R. longipropoda can be recognized by its long gnathopod 1 propodus. Their characters are described and illustrated. All specimens are deposited at Princess Maha Chakri Sirindhorn Natural History Museum, Prince of Songkla University, Thailand and the Museum für Naturkunde, Berlin.
Hypotheses to explain assortative pairing in gammarids (Amphipoda) include size-related habitat segregation and male-male competition. We investigated the influence of micro-habitat heterogeneity on size-assortative pairing in Gammarus pulex, using field-based studies and complementary laboratory-based studies. Firstly, we studied the distribution of males and females of different size and the intensity of size-assortative pairing in micro-habitats differing in particle size at three different study sites. In one site both males and females distributed among micro-habitats in relation to their size, with larger individuals in vegetation and smaller individuals in fine gravel. In a second site, there was no difference in the size of both males and females between two micro-habitats of different particle size, whereas in a third site with two micro-habitats of different particle size the difference was significant for males, but not for females. However, size-assortative pairing was significant ...
In this thesis, 10-day sediment-based static bioassay tests on the amphipod Corophium volutator (Pallas, termed C. volutator) were initially designed and set up, in order to investigate mobility, bioaccumulation and toxicity of the metals with an emphasis on arsenic in arsenic sulphides (AsS, As2S3, and Fe[AsS]) and coal-mining spoils (from Kirkcaldy, Scotland and Huainan, China). The marine amphipod is sensitive to metals (As, Cd, Pb, and Ba), which were generally recognised as the most important metals in the drainage water of coal-mining spoils. C.volutator, under the designed test, could indicate the release of contaminants derived from the arsenic sulphides and the spoils for environmental implications, and is of potential applicability in characterising the sulphide-bearing spoils in terms of toxicology monitoring. Toxicity and arsenic bioaccumulation in C.volutator varied greatly between different exposure minerals, in decreasing order: AsS≥As2S3>>Fe[AsS], in association with the 10-day ...
1. An apparatus is described for testing substrate-depth preferences of Corophium volutator (Pallas).. 2. Corophium burrow in mud whatever its depth, if only one depth of mud is available.. 3. If presented with muds of different depths, more animals burrow in the deeper muds. Very shallow muds, of 0.5 cm. depth, are particularly avoided.. 4. Although preferring deeper muds, animals are persuaded to burrow in shallow muds when the surface population density in the deeper muds is at a high level (, 0.1 animals/cm.2). This would be explained by a pattern of territorial behaviour which shows itself only at relatively high population densities.. 5. Analysis of the distribution of animals at low densities indicates some tendency towards gregariousness.. 6. Because of the periodic tendency for animals to vacate their burrows and burrow elsewhere, more than 50% of burrows at very low surface-population densities (ca. 0.01 animals/cm.2) may be unoccupied.. 7. Larger animals tend to be found in deeper ...
The Amphipoda (Latrielle 1816) are an order of the subphylum Crustacea, phylum Arthropoda. They can be found in the Class Malacostrata in most modern taxonomic schemes, even those in which the group Crustacea is treated as a phylum.. The word Amphipoda comes from two ancient Greek words, Amphi or Amphis mean on both sides and Poda meaning feet or legs. This refers to the fact that most Amphipods have both their thoracic and abdominal limbs in two different forms (grouped together by function), performing two different functions, for instance one group for swimming and one group for jumping. Amphipods in general are laterally compressed meaning they are a bit flattened from side to side, in effect they look a bit different to most other crustaceans which are either dorso-ventrally compressed (flattened top to bottom), or simply cylindrical. Most Amphipods are aquatic and will be dealt with in the section on Crustacea in the Invertebrates chapter. This small section is here because terrestrail ...
Amphipod crustacean (Socarnes vahlii). Amphipods are small crustaceans that typically have a laterally flattened body and fourteen limbs. They form part of the zooplankton: small, floating marine animals that are an important food source for many animals. - Stock Image C004/3950
Gammarus pulex were sampled from five English streams during April 1992. The population density, number of precopula pairs and incidence of parasitic infection were recorded, and the biomass was estim
The morphology of the mandible and stomach lateralia in some Lake Baikal amphipods has been investigated in regard to their food preference. Six species of endemic amphipods with different life styles (so-called
Dikerogammarus haemobaphes is a Ponto-Caspian gammarid that has invaded vast areas in Central and Western Europe. Our paper is a first presentation of its life history features in an invaded region. T
GAMMARUS (250ml tub) dried freshwater shrimps for turtles, tortoises, and large ornamental fish. Gammarus pulex are tiny crustaceans (around 2-3 cm) of the order Amphipoda. GAMMARUS are a major element in the diet of fish in the wild. | eBay!
The first search for endemic invertebrate fauna in the lesser-known ancient lake Fuxian Hu revealed a depths inhabiting amphipod.Fuxiana yangi g.n., s.p.n. is a ca. 2-3 mm long, stout, gammaroidean amphipod inclined to develop lateral protuberances. Taxonomically, the animal is a double enigma. (1) In spite of great polymorphism in its superficial trunk morphology - smooth, with a pair of horns, with pairs of lobes - the strong resemblance in appendage morphology speaks for the conspecificity of four specimens. (2) In spite of the absence of the most striking character-pegshaped palmar spines - the shape of female gnathopods and some other characters speak for its phylogenetic relation to the north Pacific anisogammarid stock rather than to original (probably) Tethyan gammarid (s. str.) stock that reportedly gave rise to the rich amphipod flock of species and genera in Bajkalskoe Ozero (Lake Baikal). Morphologically, Fuxiana is convergent with many phylogenetically unrelated stocks of ancient ...
Gammaridea is one of the suborders of the order Amphipoda, comprising small, shrimp-like crustaceans. Until recently, in a traditional classification, it encompassed about 7,275 (92%) of the 7,900 species of amphipods described by then, in approximately 1,000 genera, divided among around 125 families.[1] That concept of Gammaridea included almost all freshwater amphipods, while most of the members still were marine.. The group is however considered paraphyletic, and is under deconstruction by the amphipod taxonomists J. Lowry and A. Myers. In 2003 they moved several families from Gammaridea to join members of the former Caprellidea in a new suborder Corophiidea.[2] Further, in 2013 another large suborder Senticaudata was established, which now encompasses much of the original Gammaridea, particularly its freshwater families, and into which also the Corophiidea was merged.[3][4] The remaining Gammaridea encompasses 85 families and about 4,000 of the ca. 9,550 amphipod species recognized in ...
article{2094443, author = {Nguyen Thi Hong, Lien and Muyssen, Brita and Janssen, Colin}, issn = {0045-6535}, journal = {CHEMOSPHERE}, keyword = {Hyalella azteca,Zinc,Sediment toxicity,Dietary exposure,Selective feeding,ACID VOLATILE SULFIDES,SIMULTANEOUSLY EXTRACTED METALS,FRESH-WATER INVERTEBRATES,TOXICITY TESTS,BOUND METALS,NEANTHES-ARENACEODENTATA,AQUATIC INVERTEBRATES,REPRODUCTIVE TOXICITY,AVOIDANCE-RESPONSE,SPIKED SEDIMENTS}, language = {eng}, number = {1}, pages = {84--90}, title = {Single versus combined exposure of Hyalella azteca to zinc contaminated sediment and food}, url = {http://dx.doi.org/10.1016/j.chemosphere.2011.11.066}, volume = {87}, year = {2012 ...
Gammarid amphipods of three tidal rivers entering Chesapeake Bay were studied for ten months, particularly in the York River where 40 species were record during the period. Several species moved up or down the rivers with changing salinity. The more abundant species had longer breeding seasons. The number of described species from lower Chesapeake Bay is now 42 and the presence of 10 undescribed species and of several which bracket the region indicates that much remains to be learned about amphipods in the Bay. Nineteen of these have a boreal affinity and seven are limited to the Virginian subprovince. A reference to the most recent significant work on each species is given and a key is included as an appendix.
Ericthonius latimanus Ledoyer 1986: 625-628, fig. 238a .. Ericthonius ledoyeri J.L. Barnard & Karaman 1991: 189.. Material. This species is recorded here for the first time in South Africa. It was found in October 2009 in Sodwana Bay, northern KwaZulu-Natal, in algal turfs on Two-Mile Reef, at 22 m depth and is depositied in the Iziko South African Museum under catalogue number SAM A48148.. Remarks. This species was known previously from Madagascar and Mauritius. E. ledoyeri differs from E. brasiliensis and E. pugnax mainly in the form of gnathopod 2: E. ledoyeri having a distinct palm on article 6, and a series of spines on the lower margin of the expanded tooth of article 5. Pereiopod 3 also differs between the species of this genus, having an ovoid article 2 in E. ledoyeri, as opposed to E. brasiliensis, where it is quadrate and E. pugnax, where it has a distinct lobe.. Ericthonius pugnax Dana, 1852, new record. Ericthonius pugnax Ledoyer 1986: 628, fig. 239.. Material. Collected in 1995 from ...
The population structure of Hirondellea gigas (Birstein and Vinogradov, 1955), collected by baited trap from 8172 and 9316 m in the Izu-Bonin Trench (NW Pacific) was examined. Specimens were categorized according to sex and life stage. At 8172 m, juveniles comprised the overwhelming majority of the population, whilst at 9316 m the male: female: juvenile ratio was more evenly distributed, suggesting vertical ontogenetic structuring. Furthermore, juveniles from 8172 m were significantly smaller than those from 9316 m with an average body length of 11.1 mm (±4.6 S.D.) compared to 19.8 mm (±3.1 S.D.). Females and males showed the opposite trend to juveniles, with both the largest individuals and the greatest proportion of males and females occurring at 9316 m, no ♀6 nor brooding females were captured. Female reproductive strategies and the environmental drivers of ontogenetic structuring of H. gigas populations are discussed. We conclude that pressure per se does not drive the observed ...
[The dataset comprises all occurrence records of hyperiid amphipods from the Southern Ocean sensu lato (south of the sub-Tropical Front). It is based on taxonomic and ecological literature checked until 28 February 2009. Some unpublished species records from the Southern Ocean in various museum collections have also been included.]
Temperature is the most pervasive abiotic environmental factor for aquatic organisms. Fluctuations in temperature range lead to changes in metabolic performance. Here, we aimed to identify whether surpassing the thermal preference zones is correlated with shifts in universal cellular stress markers of protein integrity, responses to oxidative stress and lactate content, as indicators of anaerobic metabolism. Exposure of the Lake Baikal endemic amphipod species Eulimnogammarus verrucosus (Gerstfeldt, 1858), Ommatogammarus flavus (Dybowski, 1874) and of the Holarctic amphipod Gammarus lacustris Sars 1863 (Amphipoda, Crustacea) to increasing temperatures resulted in elevated heat shock protein 70 (Hsp70) and lactate content, elevated antioxidant enzyme activities (i.e., catalase and peroxidase), and reduced lactate dehydrogenase and glutathione S-transferase activities. Thus, the zone of stability (absence of any significant changes) of the studied molecular and biochemical markers correlated with the
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Ingolfiella arganoi sp. n. from Abd al Kuri Island in the Arabian Sea is described from two specimens, a male and a female. The western shore of the Indian Ocean was hitherto a vacant spot in the distribution of circumtropical shallow marine interstitial ingolfiellids and therefore the location of the new species fills a meaningful gap in the geography of the family. Morphologically, the new species shows close affinities with I. xarifae from the Maldives.
1. Der Einfluß einmaliger Röntgenbestrahlungen auf die Häutungs-, Ovipositions-, und Produktionsraten an Eiern und Jungtieren wurde an Weibchen vonGammarus duebeni Lilljeborg bei einer konstanten Temperatur von 15° C und einem Salzgehalt von 10 ‰ untersucht.. 2. 220 R oder höhere Dosen haben eine verringerte Eiproduktionsrate zur Folge.. 3. Bei 330 R oder höheren Dosen ist sowohl ein Ausfall an Ovipositionen wie auch eine reduzierte Wurfgröße zu beobachten.. 4. Eine Bestrahlung mit 220 R hat lediglich eine reduzierte Wurfgröße zur Folge.. 5. Unterschiede zwischen der Zahl der in das Marsupium abgelegten Eier und der Zahl der aus dem Marsupium entlassenen Jungtiere treten bei 490 R oder höheren Dosen auf.. 6. 147 R oder niedrigere Dosen haben keinen erkennbaren Einfluß auf die Produktionsrate an Eiern und Jungtieren.. 7. 220 R oder niedrigere Dosen können eine sogenannte „stimulierende Wirkung" haben, die sich in einer höheren Überlebensrate ausdrückt. Die eventuell reduzierte ...
De Broyer, C.; Lowry, J.K.; Jazdzewski, K. & Robert, H. (2007). Catalogue of the Gammaridean and Corophiidean Amphipoda (Crustacea) of the Southern Ocean, with distribution and ecological data. In: De Broyer C. (ed.). Census of Antarctic Marine Life: Synopsis of the Amphipoda of the Southern Ocean. Vol. I. ,em,Bulletin de lInstitut royal des Sciences naturelles de Belgique, Biologie.,/em, 77, suppl. 1: 1-325 ...
18 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 27 (a genus nearly restricted to the Listriolobus bed on the coastal shelf) 4%, Phoronopsis sp. (another characteristic, nearly exclusively limited species) 14%. These taxa, plus others shared with adjacent communities, such as Amphiodia and Pectinaria, comprise 75% of the specimens in the sample (Graph 10). Unlike the Amphiodia community, in which only 6 species regularly comprise more than 50% of the specimens (owing to predominance of Amphiodia), the Listriolobus community commonly requires tabulation of 14 species to comprise 50% of the specimens of a sample. The samples in Graph 10 show the extremes of variability, whereas the heart of the community, represented by about 20 samples not shown, is more typical of sample 5419. 700 eoo io 20 £9 30 40 50 60 60 90 IOO too 125 Median Diameter in Microns Graph 11. Depth-sediment partitioning of community assemblages of submarine canyons based on those samples analyzed for median diameters and those fitting ...
The Bulletin, published continuously since 1881, consists of longer monographic volumes in the field of natural sciences relating to zoology, paleontology, and geology. Current numbers are published at irregular intervals. The Bulletin was originally a place to publish short papers, while longer works appeared in the Memoirs. However, in the 1920s, the Memoirs ceased and the Bulletin series began publishing longer papers. A new series, the Novitates , published short papers describing new forms ...
Except where otherwise noted, content on this site is licensed under a Creative Commons Attribution, Non-Commercial, Share Alike CC BY-NC-SA Licence.. ...
Las posibles presas de caza son inteligentes si se mantienen contra el viento del cazador. Muchos predadores cazan utilizando el olfato, o por lo menos en parte. El mismo principio funciona en el agua. Muchos predadores huelen los químicos emitidos por su presa y utilizan el olor para ayudarles a localizar a su presa. Si ust
amphipod definition: any of an order (Amphipoda) of malacostracan crustaceans with a vertically thin body and one set of legs for jumping or walking and another set for swimming, as the sand hopperOrigin of amphipodfrom Modern Latin from amphi- + -p...
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Focusing on feeding as an endpoint in ecotoxicological studies is a useful and sensitive tool to detect sub-lethal impacts on individual organisms with relevance to higher levels of organisation (i.e. population and ecosystem levels). Energy availability depends on feeding [[1],[2]], and the energy budget can be considered an indicator of the overall condition of an organism [[3]]. Feeding determines the health of a population because altered growth and reproduction can be instigated by an effect on feeding [[4]-[7]]. Furthermore, reduced feeding can, at weak levels, reduce the possibility of survival due to interference with further sub-lethal effects and, at strong levels, cause death. Beyond secondary impacts of effects on feeding at the population level, feeding activity can play a direct role at the ecosystem level due to its importance for nutrient cycling.. One group of organisms responsible for a high proportion of the nutrient cycling in freshwaters are detritivores like Gammarus due to ...
This species was previously listed as Extinct based on surveys in the 1980s that did not find any A. australis in the wild (Williams and Barnard 1988). Several surveys since this time have rediscovered small populations of A. australis (Doeg et al. 1996, Papas and Crowther 2007). Austrogammarus australis is listed as Vulnerable under the Victorian government Flora and Fauna Guarantee Act 1988. It has an extent of occurrence (EOO) of 35 km2, an area of occupancy (AOO) of 5 km2 and is found at a single location. It is categorised as Critically Endangered based on this highly restricted range, all of which is threatened by degradation of water quality through pollution and invasive species ...
Re-description of Orchestia stephenseni Cecchini, 1928: designation of neotype and senior synonym to Orchestia constricta A. Costa, 1853 (Crustacea: Amphipoda: Talitridae) by Reversal of Precedence
Polyodra spp. is a small, sedentary, burrowing polychaete worm up to 3 cm long. All Polydora spp. make a U-shaped tube from small particles (Hayward & Ryland, 1995b). Polydora ciliata usually burrows into substrata containing calcium carbonate such as limestone, chalk and clay, as well as shells or oysters, mussels and periwinkles (Fish & Fish, 1996). The sexes are separate and breeding has been recorded in spring in a number of locations. In northern England, it has been recorded to occur from February until June and three or four generations succeed one another during the spawning period (Gudmundsson, 1985). Eggs are laid in a string of capsules that are attached by two threads to the wall of the burrow (Fish & Fish, 1996). After a week the larvae emerge and are believed to have a pelagic life of 2-6 weeks before settling. Length of life is no more than 1 year (Fish & Fish, 1996). Almeda et al. (2009) suggested low filtration rates and low growth rates despite high food availability for ...
WESLAWSKI, J. M., STANEK, A., SIEWERT, A., BEER, N. The Sandhopper (Talitrus saltator, Montagu, 1808) on the Polish Baltic coast. Is it a victim of increased tourism? Oceanological studies. 2000, 29(1), s. 77-87.. This is the first article of a two-part seriesl about the sea and coastal area of the Hel Peninsula, which is located in the Baltic Sea. It provides information about the history of the town and the peninsula, as well as an analysis of the natural habitats of the Hel Peninsula and information about Baltic Sea life. The next section deals with the authors two weeks of field research at the Gdansk University research station in 2013. The results of these research projects will be published in the second part of the series ...
Lowry, J. & Zeidler, W. 2008. Thurstonella, replacement name for the Antarctic amphipod genus Clarencia K.H. Barnard, 1931 (Crustacea, Amphipoda, Thurstonellidae), preoccupied by Clarencia Sloane, 1917 (Insecta, Coleoptera, Carabidae). Zootaxa 1840: 67-68. PDF. ...
Crustaceans possess a diverse array of specialized limbs. Although shifts in Hox gene expression domains have been postulated to play a role in generating this limb diversity, little functional data have been provided to understand the precise roles of Hox genes during crustacean development. We used a combination of CRISPR/Cas9-targeted mutagenesis and RNAi knockdown to decipher the function of the six Hox genes expressed in the developing mouth and trunk of the amphipod Parhyale hawaiensis. These experimentally manipulated animals display specific and striking homeotic transformations. We found that abdominal-A (abd-A) and Abdominal-B (Abd-B) are required for proper posterior patterning, with knockout of Abd-B resulting in an animal with thoracic type legs along what would have been an abdomen, and abd-A disruption generating a simplified body plan characterized by a loss of specialization in both abdominal and thoracic appendages. In the thorax, Ubx is necessary for gill development and for ...
REFERENCES. Arreola VI and MW Westneat. 1996. Mechanics of propulsion by multiple fins: Kinematics of aquatic locomotion in the burrfish (Chilomycterus schoepfi). Proceedings: Biological Sciences 263:1689-1696.. Breder CM, Jr. 1922. Notes on the summer food of Chilomycterus schoepfi (Walbaum) . Copeia 104:18-19.. Caine EA. 1983. Community interactions of Caprella penantis leach (Crustacea: Amphipoda) on sea whips. Journal of Crustacean Biology 3, No. 4:497-504.. Heck KL, Jr and TA Thoman. 1984. The nursery role of seagrass meadows in the upper and lower reaches of the Chesapeake Bay. Estuaries 7:70-92.. Hoese HD and RH Moore. 1977. Fishes of the Gulf of Mexico. Texas, Louisiana, and Adjacent Waters. Texas A&M University Press, College Station TX. 327 p.. Holt SA and GJ Holt. 1983. Cold death of fishes at Port Aransas, Texas: January 1982. The Southwestern Naturalist 28:464-466.. Hutton RF and F Sogandares-Bernal. 1960. A list of parasites from marine and coastal animals of Florida. mTransactions ...
Nayar, KN (1966) On the Gammaridean Amphipoda of the Gulf of Mannar, with special reference to those of the pearl and chank beds Proceedings of Symposium on Crustacea Marine Biological Association of India, Mandapam Camp Part I 133-168 Available at - NIO, ...
Myers, AA (2004) Amphipoda (Crustacea) of the family Aoridae (Corophiidea) from Rodrigues, Indian Ocean Journal of Natural History Taylor and Francis 38(23-24) 3123-3135 Available at - www.tandf.co.uk/ ...
Index to the families, genera, and species of the Gammaridean amphipoda (crustacea). AHFPUB19037AHFPUBOP19AHFPUBOP19037AmphipodaCrustacea ...
Paz-Ríos, C.E.; Guerra-García, J.M.; Ardisson, P.-L. 2014: Caprellids (Crustacea: Amphipoda) from the Gulf of Mexico, with observations on Deutella mayeri, redescription of Metaprotella hummelincki, a taxonomic key and zoogeographical comments. Journal of natural history, doi: 10.1080/00222933.2014.931481 reference page ...
Anfípodes são pequenos crustáceos com uma distribuição ao longo de todos os habitats marinhos e de água doce. Echinogammarus marinus (Amphipoda, Gammaridae) é uma espécie amplamente distribuída ao longo da costa europeia, sendo o estuário do Mondego (costa oeste de Portugal) considerado o limite sul da sua distribuição. Estudos prévios determinaram que E. marinus é a espécie mais abundante nos habitats intertidais rochosos, tendo um papel crucial na organização trófica do estuário do Mondego. A ocorrência de intersexualidade tem sido largamente descrita em crustáceos, incluindo populações de E. marinus do norte da Europa e mais recentemente no estuário do Mondego. Dado que esta anomalia traz custos associados, como fecundidade e fertilidade reduzidas, baixo sucesso no emparelhamento, maturação retardada e oscilações na proporção de machos/fêmeas, um dos objectivos deste trabalho foi determinar as possíveis consequências da intersexualidade para as populações de ...
Acanthodii (8) Acanthomorpha (17) Acanthomorphata (7) Acariformes (2) Acaromorpha (17) Acoela (2) Actinopteri (17) Actinopterygii (15) Aculeata (16) Adephaga (5) Aequorlitornithes (1) Aetogate (2) Agaonidae (1) Alismatanae (4) Allotriocarida (2) Alveolata (13) Ammonoidea (2) Amoebozoa (9) Amorphea (9) Amphipoda (1) Anabantiformes (1) Angiospermae (32) Anguilliformes (1) Angusteradulata (2) Animalia (102) Annelida (12) Anomalogonatae (16) Antliophora (14) Anystides (1) Anystina (1) Apiformes (1) Apo-Tracheophyta (1) Apocrita (26) Apoditrysia (1) Apoidea (5) Apoikozoa (2) Apotracheophyta (7) Arachnida (79) Araneae (18) Araneomorphae (17) Archaea (3) Archaeobranchia (1) Archaeognatha (1) Archosauria (10) Archosauromorpha (9) Archostemata (2) Arthropoda (52) Ascomycota (13) Asioryctitheria (39) Asparagales (6) Assamioidea (1) Asteiidae (1) Asterales (1) Asteridae (15) Astigmata (1) Australosphenida (1) Austrochiloidea (1) Autolamellibranchia (2) Aves (27) Avialae (13) Bacteria (3) Bactritida (1) ...
Acanthodii (8) Acanthomorpha (17) Acanthomorphata (9) Acariformes (4) Acaromorpha (17) Acoela (2) Actinopteri (17) Actinopterygii (15) Aculeata (21) Adephaga (7) Aequorlitornithes (2) Aetogate (2) Agaonidae (1) Agoniatitina (1) Alismatanae (4) Allotriocarida (5) Alveolata (14) Amaurobioidea (1) Ammonoidea (3) Amoebozoa (9) Amorphea (12) Amphipoda (1) Anabantiformes (1) Angiospermae (35) Anguilliformes (1) Angusteradulata (2) Animalia (102) Annelida (12) Anomalogonatae (16) Anthophila (1) Antliophora (14) Anura (1) Anystides (1) Anystina (1) Apiales (1) Apiformes (1) Apo-Tracheophyta (3) Apocrita (26) Apoditrysia (1) Apoidea (7) Apoikozoa (6) Apotracheophyta (7) Arachnida (85) Araneae (18) Araneida (1) Araneomorphae (17) Archaea (3) Archaeobranchia (1) Archaeognatha (1) Archosauria (10) Archosauromorpha (9) Archostemata (2) Arthropoda (59) Artiopoda (1) Ascomycota (13) Asgard (6) Asioryctitheria (39) Asparagales (7) Assamioidea (1) Asteiidae (1) Asteraceae (1) Asterales (2) Asteridae (18) ...
Members of the order Amphipoda are gonochoric and sexually dimoprhic (males larger than females). Mating behavior: Males locate potential partners with the aid of their antenna to detect the pheromones released by the females; the male then rides or carries the female until the latter is ready to molt. When the female is ready, the male pushes the sperm into the marsupium and releases the female afterwards. A few hours later, the female releases her eggs into the marsupium for fertilization. Life cycle: Eggs are brooded in the marsupium. Eggs hatch into juveniles and remain in the marsupium for a few days. Each species undergo 20 molts at most, i.e., 1-year long life cycle (Ref. 833). ...
Found on rubble, in back reefs (Ref. 86737). Members of the order Amphipoda are gonochoric and sexually dimoprhic (males larger than females). Mating behavior: Males locate potential partners with the aid of their antenna to detect the pheromones released by the females; the male then rides or carries the female until the latter is ready to molt. When the female is ready, the male pushes the sperm into the marsupium and releases the female afterwards. A few hours later, the female releases her eggs into the marsupium for fertilization. Life cycle: Eggs are brooded in the marsupium. Eggs hatch into juveniles and remain in the marsupium for a few days. Each species undergo 20 molts at most, i.e., 1-year long life cycle (Ref. 833). ...
Members of the order Amphipoda are gonochoric and sexually dimoprhic (males larger than females). Mating behavior: Males locate potential partners with the aid of their antenna to detect the pheromones released by the females; the male then rides or carries the female until the latter is ready to molt. When the female is ready, the male pushes the sperm into the marsupium and releases the female afterwards. A few hours later, the female releases her eggs into the marsupium for fertilization. Life cycle: Eggs are brooded in the marsupium. Eggs hatch into juveniles and remain in the marsupium for a few days. Each species undergo 20 molts at most, i.e., 1-year long life cycle (Ref. 833). ...
Members of the order Amphipoda are gonochoric and sexually dimoprhic (males larger than females). Mating behavior: Males locate potential partners with the aid of their antenna to detect the pheromones released by the females; the male then rides or carries the female until the latter is ready to molt. When the female is ready, the male pushes the sperm into the marsupium and releases the female afterwards. A few hours later, the female releases her eggs into the marsupium for fertilization. Life cycle: Eggs are brooded in the marsupium. Eggs hatch into juveniles and remain in the marsupium for a few days. Each species undergo 20 molts at most, i.e., 1-year long life cycle (Ref. 833). ...
長谷川 一幸 , 山本 正之 , 藤井 誠二 , 磯野 良介 , 北野 慎容 , 鷲見 浩一 日本水産工学会誌 49(1), 27-32, 2012 CiNii 外部リンク 日本農学文献記事索引 J-STAGE 参考文献29件 ...
c. a xenobiotikumok élettani hatásainak jellemzése in situ és laboratóriumi hatásvizsgálatok keretében indikátor szervezetekben (plankton szervezetek, amphipoda rákok, puhatestűek) biokémiai markerek mérésével: 1. általános kondíciómutatók (kondíció index, táplálékfogyasztás, légzés); 2. energiaháztartás (fehérjék); biokémiai stresszmarkerek (acetilkolin észteráz - AChE, biotranszformációs enzimaktivitás - GST, tejsav dehidrogenáz - LDH). ...
order Cetacea, suborder Mysticeti). A monospecific family (Eschrichtius gibbosus, the grey whale) of baleen whales in which the baleen plates are short and narrow and the left and right rows are separated at the front of the mouth. The snout is blunt, typically there are two grooves on the throat, and the body is slender. Grey whales are mostly grey in colour but with white mottling; they grow to a length of 11-15 m. They are seasonal migrants within the northern Pacific and feed on benthic Amphipoda. ...
Life is dangerous for a little crustacean like a freshwater amphipod. There are all kinds of things out there that would like to make a meal out of you, so you would sure want to get out of the way at the first sign of any would-be predator. While our sense of smell is relatively poor, other animals live in a far more aromatic and pungent world, filled all kinds of chemical signals. When it comes to chemoreception (what we would consider smell and taste), amphipods can tell the presence of a predator in main two ways, either smell their presence directly through the kairomones (basically BO) they release, or indirectly from the alarm chemicals of dead compatriots (so essentially, the scent of death ...
The carapace and appendages of G. roeselii were often coated with stalked ciliates and epibiotic rotifers (Fig. 1a), however the gills and brood pouch were commonly associated with all epibiotic commensals. None of the epibiotic commensals induced an immune response from the host and were common throughout the G. roeselii population (Table 2).. A single animal was observed with a ciliated protist infection in the haemolymph, with accumulations of the parasite in the antennal gland, gills (Fig. 1d), heart and appendages. No immune response toward the parasitic protist was noted throughout the histological screen.. Gregarines (Apicomplexa) were commonly associated with the gut (50% prevalence) (Fig. 1e) and less frequently, the hepatopancreatic tubules (, 1%). Gregarines were often seen in large numbers in the gut with both extracellular and intracellular developmental stages with occasional observation of syzygy. Gregarines elicited no apparent immune response from the host but were detected in ...
Underwood A.J., Denley E.J. (1984) Paradigms, explanations and generalizations in models for the structure of intertidal communities on rocky shores. In: Strong D.R. Jr, Simberloff D., Abele L.G., Thistle A.B. (Eds), Ecological Communities: Conceptual Issues and the Evidence. Princeton University Press, Princeton, NJ: 151-180 ...
Box plot of gammarid weight depending on infection and sex.Numbers below boxes show number of gammarids. Asterisks indicate significant differences.
Toxicity tests are most frequently conducted on organisms derived from laboratory cultures that have been reared for many generations following standardized protocols. The restricted density of laboratory populations and the possibility of occasional population crashes increases the probability that random genetic drift and inbreeding may decrease genetic variation of the culture below that typically found in natural populations of the species. Likewise, isolation of organisms in different laboratories may contribute to significant genetic differentiation among culture populations... In the situation where certain genotypes are more resistant to a particular stressor, using a culture that is dominated by the resistant genotype may underestimate the toxic effect of a contaminant. Similarly, the inclusion of a greater number of sensitive genotypes in a test may overestimate toxicity. This experiment was conducted to test the null hypothesis that no difference in tolerance to zinc contamination ...
ABSTRACT: Populations of the vent-endemic amphipod Ventiella sulfuris were compared from 6 East Pacific Rise (EPR) vent sites of different ages, 3 from the northern EPR and 3 from the southern EPR. Although vent age affected amphipod abundance, with no individuals at the oldest vent, other population/reproductive parameters were found to be site dependent rather than vent age dependent. There was little within-site variation in population structure and reproductive output, probably the result of high within-site motility. However, there were significant between-site and between-field differences, indicating a high degree of population and reproductive variability and a moderate degree of vent fidelity. Since population structure and reproductive output varied between sites, the possibility of their use as biomarkers of vent condition is discussed. The reproductive ecology of V. sulfuris is described for the first time and compared to that of other vent amphipod species. Unlike other species ...
The epibenthic amphipod Hyalella azteca has long been used as a model organism for toxicity testing. However, current morphological identification of this amphipod has proven to be insufficiently descriptive. Recent ...
View Notes - Plankton from OCNG 252 at Texas A&M. •Seals Question 6: Amphipods are a type of: Type: Multiple Choice Your answer(s): •Crustacean Question 7: Two essential requirements for all
Chronic Effect Exposed to Carbon Dioxide in Benthic Environment with Marine Invertebrates Copepod(Tisbe sp.) and Amphipod(Monocorophium acherusicum) - Carbon dioxide;Chronic effect;Marine invertebrate;Benthic environment;Risk assessment;
Comments about Amphipod AirFlow Microstretch Belt Holders:. I was looking for something to carry my iPhone 6+ while I ran so that I could have music and track some stats. Armbands didnt work too well due to the size of the phone, but this belt worked PERFECTLY! Im able to fit my phone, ID, debit card, and a couple keys in the pouch with no problem. The elastic belt allows you to snug it down to minimize bouncing and stays comfortable during the run. The mesh is a bit see through, so I was able to screen texts while running to see if I needed to respond. But because of this, I cant see it being too waterproof/resistant. Not too much of a problem however, if you wear it under a light jacket. ...
Poster (2008, August). Metabolic activity is positively related to temperature, inversely to body mass and is a function of taxon specific life style features, in particular activity such as level of active movement. Therefore ... [more ▼]. Metabolic activity is positively related to temperature, inversely to body mass and is a function of taxon specific life style features, in particular activity such as level of active movement. Therefore, the isotope signal transfer velocity is expected to be lower in cold environments and in larger as well as less active organisms. Our study explores whether this may be a problem in trophic studies of a comparatively "slow" because cold system such as the high Antarctic shelf ecosystem and in comparatively large organisms such as benthic amphipod species within this system. We compare experimentally the velocity of stable isotope signal transfer from prey to consumer in three lysianassoid amphipods, Waldeckia obesa, Abyssorchomene plebs and Pseudorchomene ...
Astroquim SA De Cv at CD AZTECA ECATEP DE MORELOS AZTECA ECATEPEXC 55120 MX. Find their customers, contact information, and details on 47 shipments.
We extracted data from two Irish lake surveys, Lough Neagh [11] and Lough Beg [12], on the presence of C. pseudogracilis at sites where either G. d. celticus or G. pulex were found separately, or where both Gammarus species were present together (n = 86); total abundances of Gammarus spp. in single and mixed species sites were similar [11,12]. We chose these lake datasets because all three species have been present for several decades and hence all species have had time to potentially colonize all sites [11,12]. For experiments, we collected G. d. celticus and G. pulex (males 14-15 mm body length; juveniles 4-6 mm; these species being equivalent in size) and female C. pseudogracilis (7-8 mm; this species being much smaller than the Gammarus spp.) from separate Isle of Man rivers, the Crogga, Middle and Colby, respectively. These rivers were similar with respect to water temperature, pH, conductivity and BOD5 (11.9-12.1°C, 7.0-7.2, 182-219 µS cm−1 and less than 2 mgl−1). Each species was ...
The species inhabiting this biotope are characteristic of mobile sediments and are adapted to the high levels of disturbance. The species present in the biotope must either be able to withstand mobile sediments through physical robustness, mobility and ability to re-position within sediments such as Nephtys cirrosa and the mobile amphipods and/or to recover rapidly to sustain population losses following severe erosion. Characterizing species typically have opportunistic life history strategies, with short life histories (typically two years or less, see below), rapid maturation and extended reproductive periods. Typically they produce juveniles that are either brooded (amphipods and isopds) and are therefore present to repopulate the disturbed habitat directly, or have pelagic larvae (Nephtys cirrosa) capable of dispersal within the water column. Adults may also be transported in the water column.. The amphipods characterizing this biotope are found in sediments subject to physical disturbance, ...
Based on our knowledge of the cell division pattern of the early developing mandibular region (see above) we were able to look at its morphogenesis at a very high level of resolution. By means of single cell labeling with the fluorescent dye DiI we were able to reconstruct and analyze the clonal composition of the mandibular region from the beginning of ectodermal proliferation up to the differentiation of the mouthparts. The cell labeling reveals that the paragnaths have their origin in the area I and area II which comprises columns 1 to 3 of region E(0). The mandibles originate from cells of the areas II and III (columns 2 to 4). Areas I and II contribute also to the sternal region and the mandibular ganglia whereas area III forms parts of the tergites as well. In more posterior segments, columns 1 and 2 mainly contribute to the formation of segmental ganglia and probably sternites, and columns 3 to 5 mainly give rise to limbs [36, 46]. Hence, when compared with clonal composition of the ...
Intact sediment cores with different densities (0, 3100, and 18,640 ind.m-2) of the amphipod Leptocherius plumulosus, were incubated in laboratory microcosms. Denitrification and oxygen concentrations were determined from sediment-water fluxes using a Dissolved Gas Analyzer, an instrument that directly measures N2 (and O2 rates). Average rates of coupled nitrification/denitrification in bioturbated cores increased by 50 and 100%, respectively, while O2 consumption rates increased by 38 and 100%.. ...
Knowledge and management of aquatic ecosystems (formerly Bulletin Français de la Pèche et de la Pisciculture), an international journal on freshwater ecosystem
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I pursue starfish related adventure around the world with a critical eye and an appreciation for weirdness. Support has been courtesy of the National Science Foundation but the views and opinions presented herein are mine and do not reflect the opinions of them or any affiliated institutions. Need to hire an invertebrate zoologist/marine biologist? Please contact me ...
C_horizon,C horizon]]:-> [[parent_rock,parent rock]]:母岩 ;[[C-value_paradox,C-value paradox]]: ;[[C3_pathway,C3 pathway (C,sub>3,/sub> pathway)]]:C3経路 ;[[C3_plant,C3 plant(s) [C,sub>3,/sub> plant(s)]]]:C3植物 ;[[C4_pathway,C4 pathway (C,sub>4,/sub> pathway)]]:C4経路 ;[[C4_photosynthesis,C4 photosynthesis (C,sub>4,/sub> photosynthesis)]] ;[[C4_plant,C4 plant(s) [C,sub>4,/sub> plant(s)]]]:C4植物 === Ca === ;[[Ca2+/calmodulin-dependent_protein_kinase , Ca,sup>2+,/sup>/calmodulin-dependent protein kinase]]:->[[CaM-kinase]] ;cactus:サボテン,サボテン類 ==== Cad ==== ;[[cadherin]]:カドヘリン ;[[caducous]]: ==== Cae ==== ;[[Caenorhabditis_elegans , Caenorhabditis elegans]]: ==== Cag ==== ;[[caged_molecule,caged molecule]]: ==== Cak ==== ;[[CAK]]:->[[Cdk-activating_kinase , Cdk-activating kinase]] ==== Cal ==== ;[[calcitonin]]: ;[[calcium_pump,calcium pump]]:->[[Ca2+_pump , Ca,sup>2+,/sup> pump]] ;[[calcrete,calcrete (caliche)]]: ;caliche:-> [[calcrete,calcrete]] ...
I have found really good and some OK information that I have found a helpful when trying to identify some of the more common hitch hikers and algaes. I thought I would post it in case others would like to have some info handy to help them identify hitch hikers. A lot if the below information is from: http://www.xtalworld.com/Aquarium/hitchfaq.htm, and on http://www.wetwebmedia.com, as well as http://www.reefkeeping.com Pods http://www.xtalworld.com/Aquarium/amphipod.jpg
The common burrower amphipod breeds from March through November in the Chesapeake Bay. Fertilization is internal and females brood their young in the marsupium located on the ventral surface of the abdomen. The number of eggs a female produces depends on her size, meaning a larger female will produce more eggs than a smaller female. On average, females can carry 10-40 eggs at a time. Females breed five times in a year; however, this rate is greatly influenced by food availability and temperature ...
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Freshwater impoundments at Savannah National Wildlife Refuge (NWR), South Carolina, provide an important habitat for wildlife species, but degraded sediment quality in the Savannah River downstream of the discharge from two impoundments have caused concern about potential contaminant problems within the impoundments. The quality of sediments from five impoundments (impoundments no. 1, 2, 6, 7, and 17) on the NWR was evaluated using physical and chemical characterization, contaminant concentrations (metals, organochlorine pesticides, polychlorinated biphenyls, and polycyclic aromatic hydrocarbons), and toxicity testing. Survival of Hyalella azteca (freshwater amphipod) exposed for 28 days to solid-phase sediments was not significantly different from controls, but growth was significantly decreased at several sites. Survival in 96-hour exposures to sediment pore water was significantly decreased at most sites. Factors contributing to the toxic responses were low pH (3.7 to 4.1), ammonia (20 mg/L), and
Wenzel MA, Douglas A, James MC, Redpath SM, Piertney SB (2016) The role of parasite-driven selection in shaping landscape genomic structure in red grouse (Lagopus lagopus scotica). Mol Ecol, 25, 324-341. Piertney SB, Black A, Watt L, Christie D, Poncet S, Collins MA(2016) Resolving patterns of population genetic and phylogeographic structure to inform control and eradication initiatives for brown rats Rattus norvegicus on South Georgia. Journal of Applied Ecology, 53, 332-339.. Eustace RM, Ritchie H, Kilgallen NM, Piertney SB, Jamieson AJ (2016) Morphological and ontogenetic stratification of abyssal and hadal Eurythenes gryllus sensu lato (Amphipoda: Lysianassoidea) from the Peru-Chile Trench. Deep Sea Research Part I: Oceanographic Research Papers, 109, 91-98.. Gavan MK, Oliver MK, Douglas A, Piertney SB (2015) Gene dynamics of toll-like receptor 4 through a population bottleneck in an insular population of water voles (Arvicola amphibius). Cons Gen, 16, 1181-1193.. Meyer-Lucht Y, Mulder KP, ...
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Arifin, Zainal, Rahma Puspitasari, and Nobuyuki Miyazaki. 2012. "Heavy Metal Contamination in Indonesian Coastal Marine Ecosystems: A Historical Perspective." Coastal Marine Science 38 (1): 227-33. ASTM. 2006. "Standard Guide for Conducting Static Acute Toxicity Tests Starting with Embryos of Four Species of Saltwater Bivalve Molluscs." In Annual Book of ASTM Standards 2006. Section Eleven : Water and Environmental Technology. Volume 11.06 Biological Effects and Environmental Fate; Biotechnology, 58-78. Bat, Levent, and Dave Raffaelli. 1998. "Sediment Toxicity Testing: A Bioassay Approach Using the Amphipod Corophium Volutator and the Polychaete Arenicola Marina." Journal of Experimental Marine Biology and Ecology 226 (2): 217-39. doi:10.1016/S0022-0981(97)00249-9. Boonyatumanond, Ruchaya, Areerat Jaksakul, Pornthip Puncharoen, and Monthip Sriratana Tabucanon. 2002. "Monitoring of Organochlorine Pesticides Residues in Green Mussels (Perna Viridis) from the Coastal Area of Thailand." ...
The oxygen hypothesis, proposed by Chapelle and Peck (Chapelle and Peck, 1999), states that polar gigantism stems from high oxygen availability coupled with low metabolic rates. The authors surveyed maximum body sizes in collections of amphipod crustaceans from different habitats, finding that the size of giants in each locality - defined as the largest 5% of species in each habitat - correlated strongly with potential oxygen availability determined from water temperature (Fig. 5). They concluded that maximum potential size is limited by oxygen availability. The oxygen hypothesis has received considerable attention (see McClain and Rex, 2001; Chapelle and Peck, 2004; Woods and Moran, 2008; Woods et al., 2009; McClain and Boyer, 2009; Klok et al., 2009; Verberk and Bilton, 2011; Verberk et al., 2011) and also considerable support in some taxa, particularly amphipods (e.g. Chapelle and Peck, 2004). Moreover, there is a substantial subset of literature suggesting that atmospheric O2 and ...
The influence of the trematode ,em,Microphallus claviformis,/em, on two congeneric intermediate host species (,em,Corophium,/em,): infection characteristics andhost ...
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Article Bioaccumulation of petroleum hydrocarbons in arctic amphipods in the oil development area of the Alaskan Beaufort Sea. An objective of a multiyear ...
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A comparative approach was taken in this study to evaluate androgen (androstenedione and testosterone) metabolism in three invertebrate species: the gastropod Marisa cornuarietis, the amphipod Hyalella azteca, and the echinoderm Paracentrotus lividus. The existence of 17β/3β-hydroxysteroid dehydrogenase (HSD) and 5α-reductase catalyzed reactions was demonstrated in all three species. Androstenedione was primarily converted to 5α-androstanedione in M. cornuarietis, while it was primarily metabolized to testosterone in P. lividus and H. azteca. In addition, and consistent with vertebrate findings, tissue specific pathways and sexual dimorphism in androgen metabolism were observed. Namely, testosterone was metabolized to dihydrotestosterone in P. lividus gonads (via 5α-reductase), and metabolized to 4-androstene-3β,17β-diol in the digestive tube (via 3β-hydroxysteroid dehydrogenase). Furthermore, the synthesis of 17β-reduced metabolites of androstenedione (testosterone and ...
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Survival in hypoxia, oxygen-limitation of respiration and effects of hypoxia on precopulatory mate-guarding behavior of the amphipod, Gammarus pseudolimnaeus, were tested to determine if seasonal hypoxia in Lake Taneycomo could be a limiting factor for amphipods in the lake. Currently, the Army Corps of Engineers uses oxygenation procedures at Table Rock Dam to defend 4.0 ppm dissolved oxygen (D.O.) in water entering Lake Taneycomo. However, little information exists to indicate whether this level of oxygenation is sufficient for survival, growth, and reproduction of G. pseudolimnaeus. Male, female, and juvenile amphipods survived 48 hours exposure to dissolved oxygen below the minimum daily average that is currently defended in the lake. Survival of hypoxia below 3.5 ppm was differed among genders and age with females being most sensitive, and juveniles being least sensitive. Sensitivity to hypoxia increased with an increase in temperature. Respiration of adult G. pseudolimnaeus was found to be oxygen
Ph.D. Auckland University. Research Focus: Invertebrate Ecology, Invasive Species Ecology. Office: DK 3024 and PSC 3113. Phone: 703-993-5956. E-mail: Click Here. Dr. Fowlers general research interests and experiences include global aquatic invertebrate species patterns, biodiversity, phenotypic plasticity, parasitology, and community and population level interactions of aquatic invertebrates, especially those concerning invasions. She has experience working in freshwater, estuarine, and marine systems both in the United States and globally. Currently, her laboratory at GMU has three main topics of study: host-parasite interactions, invasion dynamics and processes, and natural resource management of commercially and recreationally important aquatic invertebrate species.. Dr. Fowler teaches courses in Aquatic Invertebrate Ecology and Marine Ecology at the graduate and undergraduate level. She holds an adjunct position at the College of Charleston and is a research associate with the Smithsonian ...
Book now at Sol Azteca Restaurant in Boston, explore menu, see photos and read 440 reviews: Sol Azteca exceeded every expectation. Delicious food, attentive service and quite possibly the best margaritas in Boston.
Five rare or endangered plant species native to Kīpuka Puaulu and Kīpuka Kī were studied for two years to determine their stand structure, patterns of reproductive phenology, success of fruit production, potential pollinators, greenhouse seed germination rates, presence of soil seed banks, impacts of seed-predating rats, seed predation by insects, seedling predation by Kalij pheasant (Lophura leucomelanos), and seedling survival with different treatments. Species monitored were the trees Hibiscadelphus giffardianus (hau kuahiwi), Melicope hawaiensis (manena), M. zahlbruckneri (alani), and Zanthoxylum dipetalum var. dipetalum (kāwa`u), and the vine Sicyos macrophyllus (`ānunu). Limiting factors identified for H. giffardianus were rat predation of seeds, bark-stripping, low fruit production likely resulting from the inter-relatedness of the planted population, and loss of original pollinators. For M. hawaiensis, rat and native insect predation of seeds limited the number of seeds available, and
Over the past 100 years, riparian vegetation communities throughout the Southwest United States have been extensively invaded by Tamara spp. (saltcedar). Saltcedar derives its common name from its physiological adaptation to excrete salts. Theproduction of Tamarix detritus with associated secondary chemicals may affect the qualityof aquatic invertebrate food and habitat resources. An alteration in food and habitat quality may affect the composition and structure of aquatic invertebrate assemblages.A series of experiments was conducted contrasting aquatic invertebrate assemblage densities, colonization rates, and growth rates associated with Tamarix versus native vegetation, Populus fremontii (cottonwood) and Salix exigua (willow), to determine ifaquatic invertebrate assemblages have been altered by the invasion of Tamarix. Results of invertebrate growth rates over 13 weeks indicate that Tamarix is minimally different in food quality to cottonwood and willow. I failed to find differences in ...
TY - JOUR. T1 - Effect of differential gastric evacuation and multispecies prey items on estimates of daily energy intake in juvenile chinook salmon. AU - Kolok, Alan S.. AU - Rondorf, Dennis W.. PY - 1987/6/1. Y1 - 1987/6/1. N2 - The caloric density of stomach contents in juvenile chinook salmon, Oncorhynchus tshawytscha, was not affected by gastric evacuation, suggesting a constant caloric density of stomach contents during evacuation. Differences in the caloric density of prey consumed did affect caloric density of stomach contents over a 24-h period. Consumption of the amphipod Corophium sp. was associated with reduced caloric densities of stomach contents. During periods when Corophium contributed more than 4% of the stomach contents, average caloric density declined from 5.56 to 5.33 kcal g-1. Despite this difference, estimates of daily energy intake of juvenile chinook salmon were only 3%, greater when developed from the mean caloric density of stomach contents excluding Corophium.. AB - ...
Our research to date has assessed the ecotoxicological effects of endosulfan (Year 1), chlorpyrifos (Year 1 and 2), chrysene (Year 1), pyrene (Year 1), fipronil (Year 2 and 3), atrazine (Year 3), and tebufenozide (Year 3) from a molecular to population-level perspective using one or more of our three crustacean models: Palaemonetes pugio (grass shrimp), Leptocheirus plumulosus (amphipod), and Amphiascus tenuiremis (infaunal copepod). Thus far, three classes of compounds have been evaluated for their reproductive toxicity and EDC potential including: (1) organophosphate insecticides (chlorpyrifos); (2) organochlorine insecticides (endosulfan and fipronil); (3) herbicides (atrazine); (4) ecdysteroid-mimicking bisacylhydrazines (tebufenozide); and (5) steroidally structured PAHs with (6-hydroxychrysene) and without (chrysene) UV photo-activation. Specific progress to date in Year 3 of this project was built upon Years 1 and 2, and is as follows:. Ecotoxicology Progress for Year 3. ELISA and ...
The Acanthocephala (Greek akanthos, thorn + kephale, head) are a group of parasitic worms. They may be called known as acanthocephales, thorny-headed worms, or spiny-headed worms. They have an evertable proboscis,[1] armed with spines, which they use to pierce and hold the gut wall of the host. Acanthocephalans have no gut and absorb nutrients directly from the hosts gut.. Acanthocephalans have complex life cycles, with various hosts, including invertebrates, fishes, amphibians, birds, and mammals. The juveniles are parasitic in crustaceans and insects. Adults live in the digestive tract of vertebrates, especially fish. About 1150 species have been described.[2]. The Acanthocephala were thought to be a separate phylum. Recent genome analysis has shown that they are closely related to rotifers. Since all parasites are derived from free-living forms, the Acanthocephalans are modified rotifers.[3] This is an example of molecular phylogenetics. In due course, spiny-headed worms will probably be ...
Prior to this work there had been no systematic survey of heritable endosymbionts, other than Wolbachia, in Drosophila species. By examining 181 fly strains (from 35 species, 11 species groups) in the genus Drosophila for presence in ovarioles of endosymbionts from any lineage of bacteria (Figure 1), we have gained a more complete picture of the nature and scope of heritable endosymbiotic infections in this group of organisms. The most striking and unexpected result is that only two kinds of heritable endosymbionts were detected in these samples: Wolbachia and Spiroplasma. We contrast this to some other insects that possess a variety of bacterial symbionts, with high representation of Gammaproteobacteria (e.g., Baumann 2005). While our results imply a relatively low incidence of other heritable symbionts that do not cause sex-ratio distortion in Drosophila, such infections may occur in some populations or species. A previous study based on PCR screenings of different tissues of D. paulistorum, ...
Adaptive genetic divergence and ecological mechanisms of speciation in absence of a geographic barrier: the carabid beetle Pogonus chalceus as a case study " Action1 project funded by the Belgian Science Policy (BELSPO) (01/2010-12/2014). "SPEEDY: Spatial and Environmental Determinants of Eco-Evolutionary Dynamics: anthropogenic environments as a model" Interuniversity Attraction Poles (IAP)-Phase VII (10/2012-09/2017). "GENESORT: Is evolution repeatable? Introducing novel tools to unravel the genetics of parallel radiations." Pioneer project Brain-Be Phase I (01/2014-12/2016). PhD projects:. Charlotte De Busschere (FWO-aspirant) "Patterns of divergence in an adaptively radiated wolf spider genus from the Galapagos".. Bram Vanthournout (IWT) "Sex-ratio distortion in the male dimorphic dwarf spider Oedothorax gibbosus: mechanisms and the role of endosymbiotic bacteria". Eva Gaublomme (IWT) "Ecological and population genetic effects of urbanisation on carabids of historic beech forest stands in ...
Guangdong Province Material Testing Center, Guangzhou, China. We present evidence of selenium bioaccumulation at lower levels of the aquatic food chain and its antagonistic effect against mercury and methyl mercury assimilation in the aquatic food web. Most of our studies were carried out in freshwater lakes of the mining region of Sudbury, Ontario, Canada where the presence of metal smelters has introduced elevated levels of selenium in the surrounding terrestrial and aquatic ecosystems. The studies with different types of aquatic organisms demonstrate a consistent inverse relationship between concentrations of mercury/methyl mercury and selenium in whole bodies (zooplankton, benthic invertebrates, mayflies and amphipods, beetle larvae and newly hatched perch) or in muscle, liver and brain (perch and walleye). This antagonistic effect was also observed in laboratory controlled experiments with the incubated soil and surface water bacterium Pseudomonas fluorescens. We also present some ...

Antarctic AmphipodaAntarctic Amphipoda

... Citation. Grant R, Van de Putte A (2019). Antarctic Amphipoda. SCAR - AntOBIS. Occurrence dataset https:// ...
more infohttps://www.gbif.org/dataset/7b9545bc-f762-11e1-a439-00145eb45e9a

World Amphipoda Database - GammaridaWorld Amphipoda Database - Gammarida

In: De Broyer C. (ed.). Census of Antarctic Marine Life: Synopsis of the Amphipoda of the Southern Ocean. Vol. I. Bulletin de ... additional source Barnard, J. L.; Karaman, G. S. (1991). The families and genera of marine gammaridean Amphipoda (except marine ... World Amphipoda Database. Accessed at http://www.marinespecies.org/amphipoda/aphia.php?p=taxdetails&id=236816 on 2018-01-20. ... Catalogue of the Gammaridean and Corophiidean Amphipoda (Crustacea) of the Southern Ocean, with distribution and ecological ...
more infohttp://www.marinespecies.org/amphipoda/aphia.php?p=taxdetails&id=236816

Global diversity of amphipods (Amphipoda; Crustacea) in freshwater | SpringerLinkGlobal diversity of amphipods (Amphipoda; Crustacea) in freshwater | SpringerLink

The freshwater Amphipoda (Crustacea) of New Zealand: a review. Journal of the Royal Society of New Zealand 31: 341-363.CrossRef ... Griffiths, C. I. & B. A. Stewart, 2001: Amphipoda. In Day, J. A., B. A. Stewart, I. J. deMoor & A. E. Louw (eds), Guides to the ... Freshwater Amphipoda of the World. Part I, Evolutionary Patterns: i-xvii, 1-358. Part II, Handbook and Bibliography: xix, 359- ... A phylogeny and a new classification of the Corophiidea Leach, 1814 (Amphipoda). Journal of Crustacean Biology 23: 443-485. ...
more infohttps://link.springer.com/article/10.1007/s10750-007-9020-6

Amphipoda: Families and Subfamilies - The Australian MuseumAmphipoda: Families and Subfamilies - The Australian Museum

Ampithoidae (Amphipoda): World Genera and Australian, Northeast Atlantic and Mediterranean Species. AM Publication ... Sophrosynidae, a new family in the Lysianassoidea (Crustacea: Amphipoda) with a revision of the genus Sophrosyne. AM ... Cite this publication as: J.K. Lowry & R.T. Springthorpe (2001 onwards). Amphipoda: Families and Subfamilies. Version 1: 1 ... New, mainly southern hemisphere, freshwater families of Amphipoda (Crustacea), together with a description of the first ...
more infohttps://australianmuseum.net.au/learn/animals/crustaceans/amphipoda-families-subfamilies/

World Amphipoda Database - Corophioidea Leach, 1814World Amphipoda Database - Corophioidea Leach, 1814

World Amphipoda Database. Corophioidea Leach, 1814. Accessed at: http://www.marinespecies.org/amphipoda/aphia.php?p=taxdetails& ... Crustacea: Amphipoda). ,em,Zootaxa.,/em, 3610(1): 1-80., available online at http://www.mapress.com/zootaxa/2013/f/zt03610p080. ...
more infohttp://www.marinespecies.org/amphipoda/aphia.php?p=taxdetails&id=716535

World Amphipoda Database - Calliopioidea Sars, 1895World Amphipoda Database - Calliopioidea Sars, 1895

World Amphipoda Database. Calliopioidea Sars, 1895. Accessed at: http://www.marinespecies.org/amphipoda/aphia.php?p=taxdetails& ... Crustacea: Amphipoda). ,em,Zootaxa.,/em, 3610(1): 1-80., available online at http://www.mapress.com/zootaxa/2013/f/zt03610p080. ...
more infohttp://marinespecies.org/amphipoda/aphia.php?p=taxdetails&id=719505

Talitridae (Amphipoda, Gammaridea) from the Brazilian coastlineTalitridae (Amphipoda, Gammaridea) from the Brazilian coastline

... Dataset homepage. Citation. Serejo C S (2003). Talitridae ( ... Amphipoda, Gammaridea) from the Brazilian coastline. Zootaxa 646: 1-29, DOI: 10.5281/zenodo.158648 Taxonomic Coverages. ... Amphipoda, Gammaridea) from the Brazilian coastline. Plazi.org taxonomic treatments database. Checklist Dataset https://doi.org ...
more infohttps://www.gbif.org/dataset/8d3bcc8c-052c-4e5f-b814-4c231b63c278

Global diversity of amphipods (Amphipoda; Crustacea) in freshwater | SpringerLinkGlobal diversity of amphipods (Amphipoda; Crustacea) in freshwater | SpringerLink

The freshwater Amphipoda (Crustacea) of New Zealand: a review. Journal of the Royal Society of New Zealand 31: 341-363.Google ... Griffiths, C. I. & B. A. Stewart, 2001: Amphipoda. In Day, J. A., B. A. Stewart, I. J. deMoor & A. E. Louw (eds), Guides to the ... Freshwater Amphipoda of the World. Part I, Evolutionary Patterns: i-xvii, 1-358. Part II, Handbook and Bibliography: xix, 359- ... Väinölä R., Witt J.D.S., Grabowski M., Bradbury J.H., Jazdzewski K., Sket B. (2007) Global diversity of amphipods (Amphipoda; ...
more infohttps://link.springer.com/chapter/10.1007%2F978-1-4020-8259-7_27

Amphipoda - WikipediaAmphipoda - Wikipedia

"Amphipoda". World Amphipoda database. World Register of Marine Species. Retrieved 2014-05-23. "Amphipoda". Integrated Taxonomic ... The name Amphipoda comes, via the New Latin amphipoda, from the Greek roots ἀμφί ("different") and πούς ("foot"), in reference ... Media related to Amphipoda at Wikimedia Commons Data related to Amphipoda at Wikispecies. ... Amphipoda is an order of malacostracan crustaceans with no carapace and generally with laterally compressed bodies. Amphipods ...
more infohttps://en.wikipedia.org/wiki/Amphipoda

Glyphipterix amphipoda - WikipediaGlyphipterix amphipoda - Wikipedia

Glyphipterix amphipoda is a species of sedge moth in the genus Glyphipterix. It was described by Edward Meyrick in 1920. ...
more infohttps://en.wikipedia.org/wiki/Glyphipterix_amphipoda

A new species of Caprella (Amphipoda, Caprellidae) from deep sea waters  »  Brill OnlineA new species of Caprella (Amphipoda, Caprellidae) from deep sea waters » Brill Online

Home , Journals , Crustaceana , A new species of Caprella (Amphipoda, Caprellidae... Advanced Search All Content. E-Books & ... A new species of Caprella (Amphipoda, Caprellidae) from deep sea waters. Crustaceana 76, 5, 581 (2003); https://doi.org/10.1163 ...
more infohttp://booksandjournals.brillonline.com/content/journals/10.1163/156854003322316218

v.1 Amphipoda (plates) - An account of the Crustacea of Norway, - Biodiversity Heritage Libraryv.1 Amphipoda (plates) - An account of the Crustacea of Norway, - Biodiversity Heritage Library

The Biodiversity Heritage Library works collaboratively to make biodiversity literature openly available to the world as part of a global biodiversity community.
more infohttps://www.biodiversitylibrary.org/page/22733641

A new species of Monoliropus Mayer, 1903 (Crustacea, Amphipoda, Caprellidae) from Korean watersA new species of Monoliropus Mayer, 1903 (Crustacea, Amphipoda, Caprellidae) from Korean waters

A new species of the genus Monoliropus belonging to the family Caprellidae was collected from the Yellow Sea, Korea. The new species differs from Monoliropus agilis Mayer, 1903, M. kazemii Momtazi & Sari, 2013, and Triprotella amica Arimoto, 1970 as follows: 1) gnathopod 1 subrectangular; 2) pereonites 2-3 with acute triangular processes anterolaterally; 3) mandibular palp, apical article with four simple setae subdistally. The new species is fully illustrated and extensively compared with related species. This is the first record of the genus Monoliropus from Korean waters. A key to Monoliropus species is also given.
more infohttps://zookeys.pensoft.net/article/5911

The deepest mitochondrial genome sequenced from Mariana Trench Hirondellea gigas (Amphipoda) | Scripps Institution of...The deepest mitochondrial genome sequenced from Mariana Trench Hirondellea gigas (Amphipoda) | Scripps Institution of...

The deepest mitochondrial genome sequenced from Mariana Trench Hirondellea gigas (Amphipoda) The deepest mitochondrial genome ... The deepest mitochondrial genome sequenced from Mariana Trench Hirondellea gigas (Amphipoda). Publication Type. Journal Article ... sequenced from Mariana Trench Hirondellea gigas (Amphipoda). Title. ...
more infohttps://scripps.ucsd.edu/biblio/deepest-mitochondrial-genome-sequenced-mariana-trench-hirondellea-gigas-amphipoda

A preliminary molecular and morphological phylogeny of the Antarctic Epimeriidae and Iphimediidae (Crustacea, Amphipoda)  - ePICA preliminary molecular and morphological phylogeny of the Antarctic Epimeriidae and Iphimediidae (Crustacea, Amphipoda) - ePIC

A preliminary molecular and morphological phylogeny of the Antarctic Epimeriidae and Iphimediidae (Crustacea, Amphipoda) ...
more infohttp://epic.awi.de/14267/

Perthia N. G. (Amphipoda, Gammaridae) From Fresh Water of Western Australia, With Remarks On the Genera Neoniphargus and...Perthia N. G. (Amphipoda, Gammaridae) From Fresh Water of Western Australia, With Remarks On the Genera Neoniphargus and...

Perthia N. G. (Amphipoda, Gammaridae) From Fresh Water of Western Australia, With Remarks On the Genera Neoniphargus and ... Perthia N. G. (Amphipoda, Gammaridae) From Fresh Water of Western Australia, With Remarks On the Genera Neoniphargus and ...
more infohttps://brill.com/abstract/journals/cr/7/2/article-p125_5.xml

Bogidiella pingxiangensis, a new species of subterranean Amphipoda from southern China (Bogidiellidae)Bogidiella pingxiangensis, a new species of subterranean Amphipoda from southern China (Bogidiellidae)

Hou Z, Fu J, Li S (2007) A molecular phylogeny of the genus Gammarus (Crustacea: Amphipoda) based on mitochondrial and nuclear ... Hou Z, Li Z, Li S (2009) Identifying Chinese species of Gammarus (Crustacea: Amphipoda) using DNA barcoding. Current Zoology 55 ... Leijs R, Bloechl A, Koenemann S (2011) Bogidiella veneris, a new species of subterranen Amphipoda (Bogidiellldae) from ... In: Lowry JK, Myers AA (Eds) Benthic Amphipoda (Crustacea: Pericarida) of the Great Barrier Reef, Australia. Zootaxa 2260: 279- ...
more infohttps://zookeys.pensoft.net/article_preview.php?id=28671

Occurrence of Phronima sedentaria (Forskål, 1775) (Amphipoda, Hyperiidea) in the stomach of the longnose lancetfish,...Occurrence of Phronima sedentaria (Forskål, 1775) (Amphipoda, Hyperiidea) in the stomach of the longnose lancetfish,...

Occurrence of Phronima sedentaria (Forskål, 1775) (Amphipoda, Hyperiidea) in the stomach of the longnose lancetfish, ... Occurrence of Phronima sedentaria (Forskål, 1775) (Amphipoda, Hyperiidea) in the stomach of the longnose lancetfish, ...
more infohttps://brill.com/abstract/journals/cr/77/6/article-p729_5.xml

Os Ciclos biológicos de duas espécies simpátricas de Hyalella Smith, 1874 (Crustacea, Peracarida, Amphipoda, Dogielinotidae)Os Ciclos biológicos de duas espécies simpátricas de Hyalella Smith, 1874 (Crustacea, Peracarida, Amphipoda, Dogielinotidae)

... . ... Os Ciclos biológicos de duas espécies simpátricas de Hyalella Smith, 1874 (Crustacea, Peracarida, Amphipoda, Dogielinotidae). ... Os Ciclos biológicos de duas espécies simpátricas de Hyalella Smith, 1874 (Crustacea, Peracarida, Amphipoda, Dogielinotidae). ...
more infohttp://www.lume.ufrgs.br/handle/10183/10905

Gitanopsilis (Crustacea, Amphipoda, Gammaridea), eine neue Amphilochiden-Gattung aus dem Sublitoral der König-Georg-Insel ...Gitanopsilis (Crustacea, Amphipoda, Gammaridea), eine neue Amphilochiden-Gattung aus dem Sublitoral der König-Georg-Insel ...

Gitanopsilis (Crustacea, Amphipoda, Gammaridea), eine neue Amphilochiden-Gattung aus dem Sublitoral der König-Georg-Insel ( ... Rauschert, M. (1994): Gitanopsilis (Crustacea, Amphipoda, Gammaridea), eine neue Amphilochiden-Gattung aus dem Sublitoral der ...
more infohttp://epic.awi.de/2510/

Additions to and revisions of the amphipod (Crustacea: Amphipoda) fauna of South Africa, with a list of currently known species...Additions to and revisions of the amphipod (Crustacea: Amphipoda) fauna of South Africa, with a list of currently known species...

Amphipoda. Discovery Reports 5: 1-326. [ Links ]. BARNARD, K.H. 1937 Amphipoda. Scientific Report John Murray Expedition 1933- ... Amphipoda). Journal of Natural History 39: 2759-2794 [ Links ]. GRIFFITHS, C.L. 1973. The Amphipoda of southern Africa, Part 1 ... Amphipoda. In: DAY, J.A, DE MOORE I.J. & LOUW A.E. (eds) Guides to the Freshwater Invertebrates of Southern Africa, Volume 4: ... Additions to and revisions of the amphipod (Crustacea: Amphipoda) fauna of South Africa, with a list of currently known species ...
more infohttp://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S2305-79632013000100004&lng=en&nrm=iso

The composition and distribution of benthic amphipods (Crustacea: Amphipoda) in the southern Barents Sea, Russian Journal of...The composition and distribution of benthic amphipods (Crustacea: Amphipoda) in the southern Barents Sea, Russian Journal of...

Amphipoda) in the southern Barents Sea, Russian Journal of Marine Biology" on DeepDyve, the largest online rental service for ... The composition and distribution of benthic amphipods (Crustacea: Amphipoda) in the southern Barents Sea. Lyubina, O.; Bryazgin ... The composition and distribution of benthic amphipods (Crustacea: Amphipoda) in the southern Barents Sea. The composition and ... Distribution and variation of the amphipod fauna (Crustacea, Amphipoda) in the Kola Section (Barents Sea) ...
more infohttps://www.deepdyve.com/lp/springer_journal/the-composition-and-distribution-of-benthic-amphipods-crustacea-Jo065TbQmH

HEIDI: Barnard, Jerry Laurens: A review of the family Synopiidae (Tironidae), mainly distributed in the deep sea (Crustacea:...HEIDI: Barnard, Jerry Laurens: A review of the family Synopiidae (Tironidae), mainly distributed in the deep sea (Crustacea:...

A¬ review of the family Synopiidae (Tironidae), mainly distributed in the deep sea (Crustacea: Amphipoda) / Barnard, Jerry ... A¬ review of the family Synopiidae (Tironidae), mainly distributed in the deep sea (Crustacea: Amphipoda). ...
more infohttps://katalog.ub.uni-heidelberg.de/cgi-bin/titel.cgi?katkey=1071916

Phylogeographic patterns of the Lysianassoidea (Crustacea: Peracarida: Amphipoda)

 | DIAL.pr - BOREALPhylogeographic patterns of the Lysianassoidea (Crustacea: Peracarida: Amphipoda) | DIAL.pr - BOREAL

Phylogeographic patterns of the Lysianassoidea (Crustacea: Peracarida: Amphipoda). In: Claude De Broyer, Philippe Koubbi et al ... Phylogeographic patterns of the Lysianassoidea (Crustacea: Peracarida: Amphipoda) Primary tabs. *Détail(active tab) ...
more infohttps://dial.uclouvain.be/pr/boreal/object/boreal:138818
  • Amphipoda is an order of malacostracan crustaceans with no carapace and generally with laterally compressed bodies. (wikipedia.org)