The morphologic development of the gonopodium of male mosquitofish, Gambusia holbrooki, is essential for proper reproductive function and has previously been used as a biomarker for the presence of endocrine-disrupting chemicals (EDCs) in freshwater systems. The development of the gonopodium is accompanied by the modification of the hemal spines on the 14th, 15th, and 16th vertebrae. These form an anchor for the movement of the gonopodium, and their normal development is therefore critical. This development is under hormonal control. It has been hypothesized that the modification of the hemal spines may be used as an end point for understanding the effects of exposure of early-life stage fish to EDCs and to add to the understanding of the differential sensitivities of different life stages. Larval fish were exposed to concentrations (0, 20, 100, and 500 ng/L) of 17b-estradiol (E2) in two experiments using a flow-through system for 8 and 12 weeks. There was a general delay in the development of ...

HOWELL, Dylan H; WOODFORD, Darragh J; WEYL, Olaf LF y FRONEMAN, William. Population dynamics of the invasive fish, Gambusia affinis, in irrigation impoundments in the Sundays River Valley, Eastern Cape, South Africa. Water SA [online]. 2013, vol.39, n.4, pp.00-00. ISSN 1816-7950.. The alien invasive Gambusia affinis is one of the most widely introduced fish species on the planet, and has established in freshwater ecosystems across South Africa. The invasion ecology and, in particular, the population dynamics of the species in this country are, however, poorly understood. In this study the relative abundance and population dynamics of G. affinis were quantified in 5 interconnected irrigation impoundments within the Sundays River Valley, Eastern Cape. Four fish surveys were conducted from early summer (February 2012) to early winter (June 2012). Repeated-measures ANOVA analyses on the catch per unit effort (CPUE) of G. affinis between sampling events and dams revealed significant differences in ...

We sequenced and assembled the genome of the mosquitofish, Gambusia affinis, using short read Illumina data from paired-end and in vitro proximity-ligation Chicago libraries. The resulting genome assembly had high coverage, improved contigs, and long scaffold sizes compared to other assemblies that used Illumina mate-paired libraries (Poecilia reticulata; Künstner et al. 2016), assemblies that utilized Roche 454 long insert sequencing (Xiphophorus maculatus; Schartl et al. 2013), or multiple types of sequencing reads, including PacBio reads (Pootakham et al. 2017). The Chicago library improves the scaffold contiguity because it provides links between genomic regions hundreds of kb apart and uses information about proximity ligation libraries to obtain a highly continuous genome assembly (Putnam et al. 2016). The result is a high-quality genome sequence composed of 26 (N50) scaffolds, just more than the haploid number of chromosomes (n = 24; Chen and Ebeling 1968). Our genome assembly was 598.7 ...

Background: One of Darwins chosen examples for his idea of sexual selection through female choice was the sword, a colourful extension of the caudal fin of male swordtails of the genus Xiphophorus. Platyfish, also members of the genus Xiphophorus, are thought to have arisen from within the swordtails, but have secondarily lost the ability to develop a sword. The sustained increase of testosterone during sexual maturation initiates sword development in male swordtails. Addition of testosterone also induces sword-like fin extensions in some platyfish species, suggesting that the genetic interactions required for sword development may be dormant, rather than lost, within platyfish. Despite considerable interest in the evolution of the sword from a behavioural or evolutionary point of view, little is known about the developmental changes that resulted in the gain and secondary loss of the sword. Up-regulation of msxC had been shown to characterize the development of both swords and the ...

Influence of certain eco-physiological factors on predation efficiency of Gambusia affinis (Baird and Girard) on Culicine mosquito larvae

Objectives: Biological control strategies for the filarial vector Culex quinquefasciatus using Bacillus thuringiensis israelensis (Bti) and Gambusia affinis.

Current Name: Nothobranchius serengetiensis. Describer(s), Year: Wildekamp, Watters & Shidlovskiy, 2014. IDENTITY: serengetiensis N.. Family-group Names: Nothobranchiidae Garman, 1895 , Nothobranchiinae Garman, 1895 , Nothobranchiini Garman, 1895 , Nothobranchiina Garman, 1895 Genus: Nothobranchius Peters, 1868. Subgenus: Zononothobranchius Radda, 1969. Abbreviated genus: N.. Abbreviated subgenus: (Zono.). Abbreviated superspecies: [Zono.tae]. Species: serengetiensis. Index name: serengetiensis: Nothobranchius serengetiensis. Full name: Nothobranchius (Zononothobranchius) serengetiensis. TYPOLOGY: serengetiensis N.. Original name: Nothobranchius serengetiensis. Describer(s): Wildekamp, Watters & Shidlovskiy. Year of description: 2014. Original description: Wildekamp, R.H., B.R. Watters & K.M. Shidlovskiy. 2014. Review of the Nothobranchius neumanni species group with descriptions of three new species from Tanzania (Cyprinodontiformes: Nothobranchiidae). J. Amer. Killifish Assoc., 47 (1) : 21, ...

Sixteen populations, each of four male and four female green swordtail fish, were ob-served in 54 litre tanks separated into two unequal volumes by a partition allowing swim-ming from one area to another only at the surface. Each population was observed on 2 4 occasions, making a combined total of 50 observation periods of 2 hours each. Chase right orders, spatial positions as well as several agonistic and epigamic behaviour units were noted during each period of observation. Males and females apparently form distinct hierarchies which are perfectly linear and transitive in 68% and 42% of the cases respec-tively. Some dominance structures are incomplete, but no intransitivity is noted. Alpha males are much more aggressive than their isosexual subordinates. In females, the fre-quency of aggressive behaviour appears to be more proportional to the social rank of the initiator, but the number of chases received from other females is the best indicator of rank in the female hierarchies. Alpha males ...

Seven new species of the killifish genus Rivulus (Cyprinodontiformes: Rivulidae) from the Paraná, Paraguay and upperAraguaia river basins, central Brazil Wilson J. E. M. Costa Laboratório de Ictiologia Geral e Aplicada, Departamento de Zoologia, Universidade Federal do Rio de Janeiro, Caixa Postal 68049, 21944970 Rio de Janeiro, RJ, Brazil. e-mail: [email protected]. ABSTRACT Seven new species of the Rivulus punctatus group collected during recent field studies in central Brazil are described. Rivulus dapazi n. sp., from the upper rio Correntes drainage, rio Paraguay basin, is diagnosed by a unique color pattern of the anal and caudal fins in males; R. cyanopterus n. sp., from the upper rio São Lourenço drainage, rio Paraguay basin, is diagnosed by a unique color pattern of the anal fin in both sexes; R. rossoi n. sp., from the rio Inhanduí drainage, rio Paraná basin, is diagnosed by a unique color pattern of the caudal fin in males and a reduced number of gill rakers on the first ...

Current Name: Simpsonichthys bellidoi. Describer(s), Year: (Nielsen & Pillet, 2015). IDENTITY: bellidoi Simp.. Family-group Names: Rivulidae Myers, 1925 , Cynolebiatinae Hoedeman, 1961 (#Cynolebiinae #Cynolebiasinae) , Cynolebiatini Hoedeman, 1961 (#Cynolebiini #Cynolebiasini) , Simpsonichthyina Costa, 1998 Genus: Simpsonichthys Carvalho, 1959. Subgenus: Spectrolebias Costa & Nielsen, 1997. Abbreviated genus: Simp.. Abbreviated subgenus: (Spectr.). Species: bellidoi. Index name: bellidoi: Simpsonichthys bellidoi. Full name: Simpsonichthys (Spectrolebias) bellidoi. TYPOLOGY: bellidoi Simp.. Original name: Spectrolebias bellidoi. Describer(s): Nielsen & Pillet. Year of description: 2015. Original description: Nielsen, D.T.B. & D. Pillet. 2015. Spectrolebias bellidoi, a new annual fish (Cyprinodontiformes: Rivulidae: Cynolebiatinae) from the upper Río Grande basin, Amazon basin, Bolivia. Aqua, Journal of Ichthyology and Aquatic Biology, 21 (4): 181, figs. 1-2. Gender/Accordance: ...

Author: Sonnenberg, Rainer; Genre: Journal Article; Published in Print: 2007-09-21; Keywords: Chromaphyosemion koungueense sp. nov.; Chromaphyosemion omega sp. nov.; Chromaphyosemion melinoeides sp. nov.; Chromaphyosemion splendopleure complex; systematics; molecular phylogeny; color patterns; taxonomy; Title: Description of three new species of the genus Chromaphyosemion Radda, 1971 (Cyprinodontiformes: Nothobranchiidae) from the coastal plains of Cameroon with a preliminary review of the Chromaphyosemion splendopleure complex.

Pregnancy is a tiring affair and as you reach full-term you could be forgiven for avoiding confrontation to conserve energy. However, picking your battles does not seem to be a priority for live-bearing female mosquitofish, Gambusia holbrooki: according to Frank Seebacher from the University of Sydney, Australia, they get more aggressive towards the end of their pregnancy (p. 771).. Female mosquitofish are naturally feisty, vying to become dominant over other fish in order to attract more suitors. However, this behaviour is energetically costly, especially when confrontations can escalate into high-speed chases with the two fish nipping at each other. Seebacher reasoned that given the amount of energy needed to fuel these aggressive encounters, females in the late stages of pregnancy would become more docile as most of their energy would be needed to support the increasing metabolic burden of their growing offspring.. Teaming up with Ashley Ward from the University of Sydney and Robbie Wilson ...

Mosquitofish are a north-american fish species, which has been introduced to many countries worldwide. As pond fish they are easy to take care of.

Lucinda, P.H.F., 2003. Poeciliidae (Livebearers). p. 555-581. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brazil. (Ref. 50894 ...

Karyotypes of 65 species of the genus Nothobranchius Peters, 1868 were reviewed and of those 35 examined first time. The results of present study have shown that fishes of the genus Nothobranchius possessed highly diverse karyotypes. The diploid chromosome number (2n) ranged from 16 to 50. The most frequent 2n was 2n = 36 (in 35 species) while the second one 2n = 38 (in 13 species). Proportion of biarmed chromosomes varied from 0 to 95% between species. Diploid chromosome number variability apparently exists as a result of chromosomal fusions or fissions and extensive karyotypic formula alterations promoting by inversions. Multiple sex chromosomes of system X1X1X2X2/X1X2Y type were found only in karyotypes of 5 species. The extensive karyotype variability, unusual for teleosts, of genus Nothobranchius can be likely associated with the characteristics of its life cycle and inhabiting under unstable environment of East African savannah temporal pools.

A large variety of sex determination systems have been described in fish. However, almost no information is available about sex determination in the classical fish models, the zebrafish Danio rerio and the pufferfish Takifugu rubripes. A DNA-binding protein gene called dmrt1bY (or DMY) has been recently described as an outstanding candidate for the primary sex-determining gene in the medaka fish Oryzias latipes. But this gene is not the universal master sex-determining gene in teleost fish, since dmrt1bY is not found in most other fishes. Hence, other fish models need to be examined including the platyfish Xiphophorus maculatus. Xiphophorus maculatus has three types of sex chromosomes (X, Y and W; females are XX, WX or WY; males are XY or YY). Its gonosomes are at an early stage of differentiation. The sex-determining locus on the sex chromosomes is flanked by two receptor tyrosine kinase genes, the Xmrk oncogene and its protooncogenic progenitor gene egfrb, which both delimit a region of about ...

Desert springs, which harbor diverse and endemic invertebrate assemblages, are often used as refuge habitats for protected fish species. Additionally, many of these springs have been colonized by invasive fish species. However, the potential impacts of recently established fish populations on invertebrate communities in desert springs have been relatively unexplored. We conducted a mesocosm experiment to assess the impact of both protected and invasive fish on community structure of spring-dwelling invertebrates focusing on zooplankton. Experimental populations of spring zooplankton communities were established and randomly assigned to one of three treatments, (1) invasive western mosquitofish (Gambusia affinis); (2) endangered Mohave tui chub (Siphateles bicolor mohavensis); and (3) fishless control. Final populations of zooplankton and fish were sampled, sorted, identified and counted. The treatment differences of zooplankton communities were analyzed by comparing the densities of six major

The history of Bahamas mosquitofish is written in their genitals. Though youd have a hard time locating a female fishs reproductive parts, they tell a story of predators, suitors, and finding a way to regain control.. Gambusia hubbsi arrived at Andros Island, in the Bahamas, about 15,000 years ago. The little fish live in vertical, water-filled caves called blue holes. Populations separated from each other by these caves are in the process of evolving into different species, pushed by the pressures of their particular homes. For example, in some blue holes, the fish live with few threats. In others, mosquitofish swim alongside their predator, a fish called the bigmouth sleeper (Gobiomorus dormitor). The color, shape, and swimming performance of mosquitofish have all evolved differently depending on whether these predators are around.. Another trait evolving differently across mosquitofish populations is their genitals. In the past, researchers studying mosquitofish-and other rapidly changing ...

African annual killifish Nothobranchius furzeri is an established model species in many fields of research with special emphasis on aging. It is shortest-lived and rapidly aging species with spontaneous age-dependent carcinogenesis, what makes N. furzeri exceptional among vertebrates. In pilot experiment with highly inbred and extremely short-lived strain we already described incidence of liver and kidney neoplasia. According to our preliminary data from new generation sequencing (exome sequencing), there is considerable number of mutations in genes related to the processes involved in malignant transformation. The aim of present project is to discover driver mutations in tumour suppressor genes and oncogenes and verify their role in kidney and liver tissue carcinogenesis. To detect and characterise key mutations accompanying malignant transformation whole genome sequencing (WGS) will be used. Finally, we will assess the role of selected candidate oncogenes and tumour suppressor genes in vivo by ...

de Cruz, Clement R.*, Fernando Y. Yamamoto*, Sergio Castillo* and Delbert M. Gatlin III. (2019) Establishing the optimal adenosine 5′-monophosphate level for hybrid striped bass Morone chrysops x Morone saxatilis: Effects on growth performance, nutrient digestibility, and immune modulation during acute and chronic stress, Aquaculture, https://doi.org/10.1016/j.aquaculture.2019.734668.. Stites, William, Ling Wang and Delbert M. Gatlin III. (2019) Evaluation of dietary creatine and guanidinoacetic acid supplementation in juvenile red drum Sciaenops ocellatus, Aquaculture Nutrition, https://doi.org/10.1111/anu.13000.. Conway, KW, M Mateos, RC Vrijenhoek. (2019) A new species of the livebearing fish genus Poeciliopsis from northern Mexico (Cyprinodontiformes: Poeciliidae), ZooKeys 883:91-118, https://doi.org/10.3897/zookeys.883.37586.. Yorzinski, Jessica. (2019) Conjugate eye movements guide jumping locomotion in an avian species, Journal of Experimental Biology, ...

This experiment consisted of 75 different pairs composed of two male adults Xiphophorus helleri meeting each other twice. On the first occasion, one of the fish was familiarized with the meeting place for 3h (resident) while its opponent was familiarized with another aquarium (intruder). Upon dominance of one individual over the other, the pair members were separated and returned to their respective home groups for 168 hours (7 days). After this period of separation, the same pair members were reunited and met while roles had been reversed: the initial resident became the intruder, and the initial intruder was given prior-residency. Individuals in the initial resident role defeated the initial intruder in a significant majority of cases (76%). On their second meeting, the newly established dominance relationship was noted in favour of the new resident in a significant majority of cases (82%), and in a reversed direction as compared to the initially established dominance order. This shows that ...

Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Neoteleostei; Acanthomorphata; Ovalentaria; Atherinomorphae; Cyprinodontiformes; Poeciliidae; Poeciliinae; ...

Bohlen, J., Slechtova, V., Tan H. H., & Britz, R. 2011. Phylogeny of the Southeast Asian freshwater fish genus Pangio (Cypriniformes; Cobitidae). Molecular Phylogenetics and Evolution, 61: 854-865.. http://www.sciencedirect.com/science/artic…055790311003472. Abstract. The genus Pangio is one of the most species-rich of the loach family Cobitidae and widespread across South and Southeast Asia. Its species diversity has never been studied under a clear phylogenetic approach, but four species-groups were proposed according to the most obvious morphological characters. We present here phylogenetic analyses of the genus Pangio based on sequence data of the mitochondrial cytochrome b gene, the nuclear recombination-activating gene 1 (RAG 1) and a combined dataset of 109 specimens from 18 morphologically identified species across the whole distribution area of the genus. Our data reveal the existence of three major lineages within Pangio. Two of our major lineages were congruent with formerly ...

Monday, April 7, 2014. Swarms of mosquitoes buzzing around people after dusk is a familiar scene on almost every city street. So World Health Organisations (WHO) theme for World Health Day on Monday will clearly strike a chord in Chennai. WHO has identified vector diseases as biggest threat to health and have started a campaign with the tagline Small bite, big threat. We are fed up with this mosquito menace. We have to close our doors and windows by dusk. It becomes very uncomfortable because of the high night temperatures. Mosquito repellants and coils no longer seem to work, said S Ramesh, a resident of Nandanam. Poor desilting of drains and waterways and irregular garbage clearance has compounded to the problem. B M Rex, entomologist, Spartan Enterprises, said: Its surprising that there is a rise in the mosquito population even without rains. The stagnant water and overflowing drains are the main breeding grounds for mosquitoes. The corporation should release gambusia fish into the ...

Read Effect of Introduced Crayfish and Mosquitofish on California Newts, Conservation Biology on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

Since 1978, over 6000 research publications have appeared on the biology of the livebearing fishes (Family Poeciliidae), characterizing, phylogenetic relationships, ecology, behavior, life histories, morphology, environmental toxicology, and developing their potential as a model system for cancer biology. Because so much is known about these fish in their natural environments, and because they provide such convenient experimental systems, they are poised to become a premier system for evolutionary and functional genomics. Several striking phenomena within the family indicate it can become a model system for investigating sex-chromosome evolution, maintenance of genetic variation, gene regulation, and the genetic bases of life history, behavioral, and morphological evolution. Surprisingly though, very little is known about poeciliid genomes, and few molecular tools are available. We therefore propose to bring together poeciliid biologists, molecular biologists, geneticists and genomicists to ...

90. Henke, J. A., and W. E. Walton. 2009. Effects of vegetation on the efficacy of larval mosquito (Diptera: Culicidae) control by a native larvivorous fish. Proc. Papers Mosq. Vector Control Assoc. Calif. 77: 224-229.. 89. Popko, D. A., M. R. Sanford and W. E. Walton. 2009. The influence of water quality and vegetation on mosquitofish in mosquito control programs in wastewater wetlands. Proc. Papers Mosq. Vector Control Assoc. Calif. 77: 230-237.. 88. Walton, W. E., A. R. Van Dam and D. A. Popko. 2009. Ovipositional responses of two Culex (Diptera: Culicidae) species to larvivorous fish. Journal of Medical Entomology 48: 1338-1343.. 87. Berg, J., M. Felton, D. Fish, L. Gecy, A. Laderman, C. Mayhew, J. Mengler, W. H. Meredith, N. Read, J. Rey, C. Roberts, G. Sakolsky-Hoopes, W. E. Walton, B. Warner, and R. Wolfe. (alphabetical list) 2009. Current Practices in Wetland Management for Mosquito Control. SWS Web Page. Wetland Concerns Committee. 19p. [PDF] ...

The lipid composition of cell membranes is linked to metabolic rate and lifespan in mammals and birds but very little information is available for fish. In this study, three fish species of the short-lived annual genus Nothobranchius with different maximum lifespan potential (MLSP) and the longer-lived outgroup species Aphyosemion australe were studied to test whether they conform to the predictions of the longevity- homeoviscous adaptation (LHA) theory of ageing. Lipid analyses were performed in whole-fish samples and the peroxidation index (PIn) for every phospholipid (PL) class and for the whole membrane was calculated. Total PL content was significantly lower in A. australe and N. korthausae, the two species with the highest MLSP, and a negative correlation between membrane total PIn and fish MLSP was found, meaning that the longer-lived fish species have more saturated membranes and, therefore, a lower susceptibility to oxidative damage, as the LHA theory posits.. ...

The epidermal growth factor receptor (Egfr) with its numerous ligands has fundamental roles in development, cell differentiation and physiology. Dysfunction of the receptor-ligand system contributes to many human malignancies. Consistent with such various tasks, the Egfr gene family has expanded during vertebrate evolution as a consequence of several rounds of whole genome duplication. Of particular interest is the effect of the fish-specific whole genome duplication (FSGD) on the ligand-receptor system, as it has supplied this largest group of vertebrates with additional opportunities for sub- and/or neofunctionalization in this signaling system. We identified the predicted components of the Egf receptor-ligand signaling system in teleost fishes (medaka, platyfish, stickleback, pufferfishes and zebrafish). We found two duplicated egfr genes, egfra and egfrb, in all available teleost genomes. Surprisingly only one copy for each of the seven Egfr ligands could be identified in most fishes, with zebrafish

Human genetics is the study of inheritance as it occurs in human beings. Human genetics Autosomal recessive traits is one pattern of inheritance for a trait, disease, or disorder to be A karyotype can also be useful in clinical genetics, due to its ability to Males have two distinct sex chromosomes (XY), and are called the. with an all-autosome karyotype; (2) the platyfish with genetically defined sex comparative genomic hybridization fish cytogenetics sex chromosomes sex Blin N, Stafford DW () A general method for isolation of high molecular weight.. The two sex chromosomes are considered autosomes in karyotype in Stafford

Fische der Gattung Xiphophorus stellen eines der am besten untersuchten Modellsysteme zur Untersuchung genetischer Geschlechtsbestimmung innerhalb dieser Klasse von mehr als 24.000 Arten dar. X. maculatus kann männliche (XX/ XY) oder weibliche (WY/ YY) Heterogametie aufweisen. Zusätzlich sind atypische Geschlechtsbestimmungssysteme beschrieben worden, die auf autosomale Modifikatoren zurückgeführt wurden. Obwohl kürzlich das Mastergen der Geschlechtsbestimmung im Medaka (Oryzias latipes) als ein Mitglied der Dmrt-Genfamilie identifiziert wurde, konnte Dmrt1bY als Mastergen der Geschlechtsbestimmung von Xiphophorus und anderen Fischen ausgeschlossen werden. Xiphophorus wurde zum wissenschaftlichen Modellsystem, da bestimmte zwischenartliche Kreuzungshybride maligne Melanome entwickeln. Das dafür verantwortliche Onkogen Xmrk und sein physiologisches Gegenstück egfrb liegen eng gekoppelt (| 0,6 cM) in der Geschlechtsbestimmungsregion von X. maculatus. Die Kopplungsgruppe umfasst noch weitere Loci

TY - JOUR. T1 - Unusual kinematics and jaw morphology associated with piscivory in the poeciliid, Belonesox belizanus. AU - Ferry-Graham, Lara A.. AU - Hernandez, L. Patricia. AU - Gibb, Alice C.. AU - Pace, Cinnamon. N1 - Funding Information: We would like to thank Anthony Arena, Matt ONeill, Teresa Hunt, Cassie Lyons, and Nathan Bird who provided technical assistance with data collection. Many thanks to Lynne Parenti, Division of Fishes at the Smithsonian National Museum of Natural History for cleared and stained specimens. We also thank the anonymous reviewers for their thoughtful and constructive comments. Support for this research was provided by NSF IOS-0726081 to LFG, NSF IOS-0726001 to ACG, NSF IOS-0726087 to LPH, a Northern Arizona University (NAU) Intramural Grant, and a Science Foundational Arizona Competitive Advantage Award CAA 0057-07 to ACG.. PY - 2010/5. Y1 - 2010/5. N2 - Piscivory in fishes is often associated with the evolution of highly elongate jaws that achieve a large ...

Back in its native habitat, the African turquoise killifish wiggles from its egg, eats, spawns and dies - all within a few months. Life goes by fast when your home is a quickly evaporating pond of rainwater. But even when raised as pets in a home aquarium, these killifish still live for less than a year.. For researchers studying aging, thats a good thing. It turns out that the fish mature much like humans do - but far more rapidly. That makes them helpful for efficiently studying the aging process, and its why research labs focusing on the fish are growing exponentially.. Now Bérénice Benayoun, who was on the first team to sequence the fishs genome, has joined the USC Leonard Davis School of Gerontology from Stanford University. She is bringing Nothobranchius furzeri to USC for the first time, so insights on aging are sure to follow.. ...

Video articles in JoVE about cohort studies include Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry, Macromolecules, Determining the Likelihood of Variant Pathogenicity Using Amino Acid-level Signal-to-Noise Analysis of Genetic Variation, A Protocol for Laboratory Housing of Turquoise Killifish (Nothobranchius furzeri), Microarray-based Identification of Individual HERV Loci Expression: Application to Biomarker Discovery in Prostate Cancer, Personalized Peptide Arrays for Detection of HLA Alloantibodies in Organ Transplantation, An Affordable HIV-1 Drug Resistance Monitoring Method for Resource Limited Settings, Semiconductor Sequencing for Preimplantation Genetic Testing for Aneuploidy, Laparoscopic Radical Left Pancreatectomy for Pancreatic Cancer: Surgical Strategy and Technique Video, A Bedside, Single Burr Hole Approach to Multimodality Monitoring in Severe Brain Injury, Comprehensive Evaluation of the Effectiveness and

It is not clear whether fast and slow phenotypes have effectively equal fitness under fully aquatic conditions, or whether there are situations that would favour the fast Belize phenotype. One limitation to our microcosm experiment was that fish were unable to disperse. The natural habitat of mangrove rivulus and other rivuline killifishes typically consists of a mosaic of small, intermittent pools (Turko and Wright, 2015; Furness et al., 2018; Sutton et al., 2018). A high metabolic rate is often correlated with high boldness and activity (e.g. Killen et al., 2011; Gangloff et al., 2017), and perhaps Belize fish are more likely to leave water and disperse to unoccupied habitats. We have previously found that metabolic rate of K. marmoratus was positively associated with the frequency of emersion behaviour (Turko et al., 2018). Embryo production by Belize fish was the highest of any strain in our laboratory colony, typical of a dispersal phenotype. Furthermore, when embryo production in the ...

Members of the annual killifish genus Austrolebias live in temporary ponds across South America and possess a remarkable life cycle. These fish live in small ponds that dry out completely; killing the adults but not before they have laid eggs in the substrate of their pond. The desiccation-resistant eggs develop during the dry season, going through multiple stages of diapause until the next wet season rains trigger hatching and the cycle is repeated. There is considerable variation in size in Austrolebias, the largest species can reach up to 150mm in length while the typical size is just 40mm. Phylogenetic trees and species distribution models were built and used together to identify the factors that influence patterns of co-occurrence within this genus. Differences in growth and morphology among Austrolebias species were examined to quantify how differences in growth pattern can lead to the large variation in size and shape seen within the genus. Genomic data was generated for hybrid offspring ...

Chemicals, Breeding Green Terrors, Fungus on RESs Neck - 05/29/06 Hi crew. I am happy to be back after a long break to my fish hobby. Now I have many questions for you. 1)There is a lake near my house which was polluted by chemicals nearly 8-10yrs back. Now I find a lot of daphnia and mosquito fish in the lake. Can I feed this to my fish? , Chemicals is a very broad term. Depending on the contamination levels and the chemicals the threat could be gone by now. Other chemicals can last for years in very low concentrations. These invertebrates could each contain a very minute level of the chemicals. As you fish eats these invertebrates the concentration of the chemicals may build up in the fishs body and cause health problems for your fish. In general I do not use any water for my fish that I would not drink myself. This way I know the water is safe., I also fear that there are hook worms (Argulus) present along with the daphnia. Can I feed this to my fishes? , Fish generally will not eat ...

From an egg smaller than the size of half a thumbnail, to a tail-wagging, debris-eating wriggler, to a somersaulting tumbler, the mosquito undergoes a series of transformations and emerges in its most well-known and only terrestrial form: the adult mosquito.. Common vector control practices include using bio-pesticides or planting mosquito fish - which eat the larvae on the surface of the water - in self-contained man-made bodies of water such as pools, ornamental ponds and animal troughs.. In Albany, vector control officials provide a couple of residents with chicken flocks and an abundance of food for the animals. In return, the officials take blood samples from the chickens every two weeks from April through early November to test for the West Nile Virus and other mosquito-spread diseases.. ...

Fish in the genus Limia are lecithotrophic, meaning that there is pre-fertilization maternal provisioning in the form of yolked eggs ... Fertilization is achieved internally with the males gonopodium, a modified anal fin used for sperm transfer ... of the asymmetrical energy costs associated with internal fertilization, females in many Poeciliid species act as the choosy sex, with males exhibiting ornate coloration and morphology as well as elaborate courtship ...

Neuropeptides are a diverse assemblage of signalling molecules that have key roles in the regulation of behaviour. Understanding the evolutionary relationships and functions of the plethora of neuropeptides has presented a considerable challenge to biologists. Based on presentations and discussions at a Royal Society meeting in 2017, three companion Review articles by Elphick et al., Jékely et al. and DeLaney et al. discuss advances in our knowledge of neuropeptide evolution and function and the techniques that have facilitated progress in this field of research.. ...

Etymology: Pholidochromis: Name from Greek pholis, meaning a scale or spot, chromis a genus of pomacentrid that has been used as the stem of various other fish genera, alludes to the distinctive dark spots around the head pores.; marginatus: Name from Latin meaning to furnish with a border, refers to the typical dark submarginal stripes on the caudal, dorsal and anal fins (Ref. 81967). ...

PAS Proteins: Regulators and Sensors of Development and Physiology. PAS proteins keep an eye on quite a few physiological and developmental occasions, and span phylogeny from micro organism to guy. Bacterial and plant PAS proteins act as sensors of environmental stimuli, together with mild, oxygen, and effort prestige. now not mind-blowing, given those roles, theres excessive research of the jobs of bHLH-PAS proteins in problems with human future health together with: (1) melanoma induction, (2) melanoma progress and vascularity, (3) delivery defects, together with Down syndrome, (4) urge for food keep an eye on and weight problems, (5) sleep rhythm issues, and (6) psychological healthiness issues corresponding to social interactions and studying. ...

PAS Proteins: Regulators and Sensors of Development and Physiology. PAS proteins keep an eye on a variety of physiological and developmental occasions, and span phylogeny from micro organism to guy. Bacterial and plant PAS proteins act as sensors of environmental stimuli, together with mild, oxygen, and effort prestige. now not outstanding, given those roles, theres severe research of the jobs of bHLH-PAS proteins in problems with human future health together with: (1) melanoma induction, (2) melanoma development and vascularity, (3) start defects, together with Down syndrome, (4) urge for food keep an eye on and weight problems, (5) sleep rhythm problems, and (6) psychological future health issues comparable to social interactions and studying. ...

In other species: Panuco swordtail , Perugias limia Mendelian trait/disorder: yes Mode of inheritance: Autosomal Considered a defect: no Key variant known: yes Year key variant first reported: 2015 Species-specific description: Lank et al. (1995) described two morphs in this species: independent males have a territorial breeding strategy of defending lek mating courts against other independents while satellites, which are non-territorial, move among, are recruited to and share independents courts. Jukema and Piersma (2006) added a third, namely faeder: Faeders are slightly larger than females and in late April have testes 2.5 time the size of testes of normal males. On leks in aviaries and in the wild they appear to combine feminine and masculine behaviours. Faeders may represent the ancestral, care-giving, male strategy, but their relatively large testes suggest that currently they behave as sneakers. A video demonstrating ruff male reproductive strategies at a lek in Karesuando, ...

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It is therefore considered important to breed both populations in allopatric conditions [separated] until this point can be clarified.. History. L. Seegers describes the discovery of N.fuscotaeniatus in an article published in DATZ (1998). He considers it to be the result of a lucky day. Coming from a collecting trip in southern Tanzania, and because the first part of his mission had been more productive than anticipated, he could spare one day. He therefore decided to spent some time in the Selous Game Reserve and photograph some African wildlife. In order to reach the lodge, coming from the south, one has to cross the Rufiji River either at Ndundu along the lower-river or about 60-km more stream upwards at Utete. As on arrival at the crossroad, the day was already fairly advanced and because he could not reach the ferry at Ndundu in time, he decided to make the crossing at Utete; pass the night there and continue the journey, first thing next morning.. The local guesthouse in Utete was still ...

I mean, if they are pregnant I dont want them to give … At the current time, researchers arent sure whether or not Celestial Pearl Danios are in danger of going extinct. They will spawn in groups. They will also swim with other peaceful fish living in the same community tank. This is a fairly new tank setup, and Id like to do a water change, but dont want to disturb the fry too much. Zebra danios are not live-bearing fish, so they do not get pregnant. From a fin perspective, were it not for their swim bladder and gill challenges, these fish would do well in tanks of all depths. There is some observation from aquarium fish traders that population numbers are declining. They are, indeed, gorgeous fish that will also display a good bit of personality once they get to know you. To encourage them to breed, you dont have to do anything. The males are streamlined in appearance. If you dont have room for a nursery tank and large numbers of Galaxy Rasboras, simply leave the parent fish in the ...

Bertelsen, E. 1951. The ceratioid fishes. Ontogeny, taxonomy, distribution and biology. Dana Rept., 39, 276 pp.. Bertelsen, E. 1984. Ceratioidei: Development and relationships. pp. 325-334, In: Moser, H. G., W. J. Richards, D. M. Cohen, M. P. Fahay, A. W. Kendall, Jr., and S. L. Richardson (editors), Ontogeny and Systematics of Fishes, Spec. Publ. No. 1, Amer. Soc. Ichthy. Herpet., ix + 760 pp.. Blot, J. 1980. La faune ichthyologique des gisements du Monte Bolca (Province de Verone, Italie). Bull. Mus. Nat. Hist. Nat., Paris, Ser. 4, 2, C: 339-396.. Bradbury, M. G. 1967. The genera of batfishes (family Ogcocephalidae). Copeia, 1967(2): 399-422.. Bradbury, M. G. 1980. A revision of the fish genus Ogcocephalus with descriptions of new species from the Western Atlantic Ocean (Ogcocephalidae: Lophiiformes). Proc. Calif. Acad. Sci., 42(7): 229-285.. Bradbury, M. G. 1988. Rare fishes of the deep-sea genus Halieutopsis: A review with descriptions of four new species (Lophiiformes: Ogcocephalidae). ...

Bertelsen, E. 1951. The ceratioid fishes. Ontogeny, taxonomy, distribution and biology. Dana Rept., 39, 276 pp.. Bertelsen, E. 1984. Ceratioidei: Development and relationships. pp. 325-334, In: Moser, H. G., W. J. Richards, D. M. Cohen, M. P. Fahay, A. W. Kendall, Jr., and S. L. Richardson (editors), Ontogeny and Systematics of Fishes, Spec. Publ. No. 1, Amer. Soc. Ichthy. Herpet., ix + 760 pp.. Blot, J. 1980. La faune ichthyologique des gisements du Monte Bolca (Province de Verone, Italie). Bull. Mus. Nat. Hist. Nat., Paris, Ser. 4, 2, C: 339-396.. Bradbury, M. G. 1967. The genera of batfishes (family Ogcocephalidae). Copeia, 1967(2): 399-422.. Bradbury, M. G. 1980. A revision of the fish genus Ogcocephalus with descriptions of new species from the Western Atlantic Ocean (Ogcocephalidae: Lophiiformes). Proc. Calif. Acad. Sci., 42(7): 229-285.. Bradbury, M. G. 1988. Rare fishes of the deep-sea genus Halieutopsis: A review with descriptions of four new species (Lophiiformes: Ogcocephalidae). ...

Rather, it reflects the current content of FishBase, and the progress with respect to synchronization with the Catalog of Fishes. However, we think it can be useful for users to assess the quality of information in FishBase, to start new work on the family, or to cross-check with other lists. But we appreciate to be cited in publications when this list has been of any working value. In particular, for published scientific, we suggest then to cite it in the Material and Method section as a useful tool to conduct the research, but again, not as a taxonomic or nomenclatural authority reference. Unless it is explicitly precised, the list is not complete, please search all original names published for the family in the Catalog of Fishes (genera, species), including those with uncertain or unknown status, that are not included in FishBase when they are not attached to a valid species. This list uses some data from Catalog of Fishes (not shown but used to sort names). ...

Rather, it reflects the current content of FishBase, and the progress with respect to synchronization with the Catalog of Fishes. However, we think it can be useful for users to assess the quality of information in FishBase, to start new work on the family, or to cross-check with other lists. But we appreciate to be cited in publications when this list has been of any working value. In particular, for published scientific, we suggest then to cite it in the Material and Method section as a useful tool to conduct the research, but again, not as a taxonomic or nomenclatural authority reference. Unless it is explicitly precised, the list is not complete, please search all original names published for the family in the Catalog of Fishes (genera, species), including those with uncertain or unknown status, that are not included in FishBase when they are not attached to a valid species. This list uses some data from Catalog of Fishes (not shown but used to sort names). ...

Rather, it reflects the current content of FishBase, and the progress with respect to synchronization with the Catalog of Fishes. However, we think it can be useful for users to assess the quality of information in FishBase, to start new work on the family, or to cross-check with other lists. But we appreciate to be cited in publications when this list has been of any working value. In particular, for published scientific, we suggest then to cite it in the Material and Method section as a useful tool to conduct the research, but again, not as a taxonomic or nomenclatural authority reference. Unless it is explicitly precised, the list is not complete, please search all original names published for the family in the Catalog of Fishes (genera, species), including those with uncertain or unknown status, that are not included in FishBase when they are not attached to a valid species. This list uses some data from Catalog of Fishes (not shown but used to sort names). In the column CofF, the digit ...

Heemstra, P.C. & Hecht, T. 1986: Dinopercidae, a new family for the percoid marine fish genera Dinoperca Boulenger and Centrarchops Fowler (Pisces: Perciformes). Ichthyological Bulletin of the J. L. B. Smith Institute of Ichthyology, (51): 1-20 ...

Definition of cross swords in the Legal Dictionary - by Free online English dictionary and encyclopedia. What is cross swords? Meaning of cross swords as a legal term. What does cross swords mean in law?

7. Cotoneaster affinis Lindley, Trans. Linn. Soc. London, Bot. 13: 101. 1822. 藏边栒子 zang bian xun zi Cotoneaster bacillaris Lindley var. affinis (Lindley) J. D. Hooker; C. frigidus Lindley var. affinis (Lindley) Wenzig; Mespilus affinis (Lindley) D. Don.. Shrubs deciduous, to 5 m tall. Branchlets dark reddish brown, terete. Petiole 4-5 mm, densely yellow tomentose; stipules linear or lanceolate, tomentulose; leaf blade ovate or elliptic-ovate, 2.5-5 × 1.4-2 cm, midvein raised abaxially and impressed adaxially, abaxially densely yellow tomentose, gradually glabrescent, adaxially glabrous or puberulous only along midvein, base broadly cuneate, apex obtuse or acute. Compound corymbs 3-4 cm in diam., 15-30-flowered or more; rachis and pedicels densely yellow tomentose; bracts linear-lanceolate, tomentose. Pedicel 2-3 mm. Flowers ca. 1 cm in diam. Hypanthium campanulate, abaxially tomentose. Sepals broadly triangular, apex acute. Petals spreading, white, suborbicular or ovate, 3-4 mm, ...

X of Swords has been a little slower as an event than Id like, but this issue sets things in motion for the final three issues.. Cable loses to Bei the Blood Moon in a battle to the death because of a moments hesitation. Still, thankfully, Cypher intercedes on his behalf, and Saturnyne accepts a death of Cables fighting spirit in place of bodily death.. Gorgons fight with the White Sword follows, with the former having to face the latters one hundred swords, thirteen of whom he kills before falling himself. This makes the score 19-19. Where Krakoa had fallen catastrophically behind, they find themselves tied with Arakko. Perhaps its here where we see Saturnyne rigging the contest to put Krakoa back on equal ground.. Back to Cable, we know he is one of the pieces Saturnyne has been moving from all the way back in X of Swords: Creation.. ...

The Goddess White Sword is the second form of the Goddess Sword. It is obtained in the Sandship when the Goddess Longsword is purified by Nayrus Flame. The Goddess White Sword is much whiter than the previous incarnation, and is more pure as well. This sword also has enhanced Dowsing abilities making it easier to locate Treasure.

Miller has worked in various fiscal capacities within the City and County of Denver for the past 13 years. In addition to work in Denvers Finance Department, he worked in Denvers Department of Public Works Capital Project Management Office and currently serves as the Controller for Denvers Arts and Venues agency. He has a great deal of experience in developing annual capital improvement programs and operating budgets for a large department in a municipal government setting.. The role of Treasurer is an important one; ensuring that City assets are properly safeguarded and efficiently managed so the municipality can continue to effectively serve its residents and fulfill its purpose, stated Miller.. Miller currently serves as Treasurer for the Wheat Ridge Carnation Festival Board, as a volunteer for the Good Shepard Church and School Annual Fish Fry, and with the Denver Employees Volunteer Opportunities Annual Paint-a-Thon for seniors.. He received a Master of Science degree in Finance and ...

This week, the fun continues as Kaitlin and Shawn talk electrolytes. Join us as we discuss the importance of electrolytes, their function in our bodies, and how SWORD® and SHIELD® are formulated to hydrate you for the task at hand. Check out SWORD 101 to learn more about sodium in SWORD®

The basic structure of eyes that we see today was present during the Cambrian era, but there is a lot of variety. The male version of the mayfly has a large compound eye which allows it to watch the sky for the form of a female. The four-eyed fish is able to look up to the surface of the water, and also keep watch below for any danger. Human eyes are fast, but birds of prey have superior resolution.. Nilssons research has shed light on an ongoing debate about the evolution of eyes. Some scientists believed there were many origins; others suggested there was only one step in their evolution. This latter idea was based on the discovery of a gene, called Pax6, which controls the development of eyes.. They are all right. The eyes of many organisms have evolved from Nilssons first stage. All eyes begin with the same building block, a protein called an opsin. Opsins hold a chromophore which is able to take in the energy of a photon. The chromophore and the opsin set off the start of ...

Von Zipper has made it its business to promote your unique personality through its premium quality eyeglasses. Von Zippers popularity stems from its innovative and novel designs, which allow you to wear your individuality front and center for everyone to see. From geeky thick-rimmed eyeglasses to funky 1970s inspired frames, Von Zipper makes an art out of being four-eyed.. ...