A suborder of CRUSTACEA, order Diplostraca, comprising the water fleas. They are benthic filter feeders that consume PHYTOPLANKTON. The body is laterally compressed and enclosed in a bivalved carapace, from which the head extends.
A diverse genus of minute freshwater CRUSTACEA, of the suborder CLADOCERA. They are a major food source for both young and adult freshwater fish.
Minute free-floating animal organisms which live in practically all natural waters.
A class of minute animals of the phylum Aschelminthes.
A huge subclass of mostly marine CRUSTACEA, containing over 14,000 species. The 10 orders comprise both planktonic and benthic organisms, and include both free-living and parasitic forms. Planktonic copepods form the principle link between PHYTOPLANKTON and the higher trophic levels of the marine food chains.
Water containing no significant amounts of salts, such as water from RIVERS and LAKES.
Number of individuals in a population relative to space.
The pattern of any process, or the interrelationship of phenomena, which affects growth or change within a population.
Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)
Reproduction without fusion of two types of cells, mostly found in ALGAE; FUNGI; and PLANTS. Asexual reproduction occurs in several ways, such as budding, fission, or splitting from "parent" cells. Only few groups of ANIMALS reproduce asexually or unisexually (PARTHENOGENESIS).
A unisexual reproduction without the fusion of a male and a female gamete (FERTILIZATION). In parthenogenesis, an individual is formed from an unfertilized OVUM that did not complete MEIOSIS. Parthenogenesis occurs in nature and can be artificially induced.
A genus of gram-negative, aerobic, rod-shaped bacteria. Organisms in this genus had originally been classified as members of the PSEUDOMONAS genus but overwhelming biochemical and chemical findings indicated the need to separate them from other Pseudomonas species, and hence, this new genus was created.
The study of the origin, structure, development, growth, function, genetics, and reproduction of organisms which inhabit the OCEANS AND SEAS.
A genus of FUNGI in the family Glugeidae, parasitic on FISHES. The PARASITES cause the formation of large cysts causing hypertrophy.
Organisms that live in water.
Congenital craniostenosis with syndactyly.
Autosomal dominant CRANIOSYNOSTOSIS with shallow ORBITS; EXOPHTHALMOS; and maxillary hypoplasia.
A non-metal element that has the atomic symbol P, atomic number 15, and atomic weight 31. It is an essential element that takes part in a broad variety of biochemical reactions.
Facilities for collecting and organizing information. They may be specialized by subject field, type of source material, persons served, location, or type of services.
Instinctual behavior pattern in which food is obtained by killing and consuming other species.
The study of animals - their morphology, growth, distribution, classification, and behavior.
A center in the HEALTH RESOURCES ADMINISTRATION Division of Planning Methods and Technology which provides access to current information on health planning and resources development.
A multisystemic disease of a complex genetic background. It is characterized by inflammation of the blood vessels (VASCULITIS) leading to damage in any number of organs. The common features include granulomatous inflammation of the RESPIRATORY TRACT and kidneys. Most patients have measurable autoantibodies (ANTINEUTROPHIL CYTOPLASMIC ANTIBODIES) against neutrophil proteinase-3 (WEGENER AUTOANTIGEN).
Lists of words, usually in alphabetical order, giving information about form, pronunciation, etymology, grammar, and meaning.
The common name for the phylum of microscopic unicellular STRAMENOPILES. Most are aquatic, being found in fresh, brackish, and salt water. Diatoms are noted for the symmetry and sculpturing of their siliceous cell walls. They account for 40% of PHYTOPLANKTON, but not all diatoms are planktonic.
Any significant change in measures of climate (such as temperature, precipitation, or wind) lasting for an extended period (decades or longer). It may result from natural factors such as changes in the sun's intensity, natural processes within the climate system such as changes in ocean circulation, or human activities.
The Arctic Ocean and the lands in it and adjacent to it. It includes Point Barrow, Alaska, most of the Franklin District in Canada, two thirds of Greenland, Svalbard, Franz Josef Land, Lapland, Novaya Zemlya, and Northern Siberia. (Webster's New Geographical Dictionary, 1988, p66)
Food that has been prepared and stored in a way to prevent spoilage.
The longterm manifestations of WEATHER. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
The effect of GLOBAL WARMING and the resulting increase in world temperatures. The predicted health effects of such long-term climatic change include increased incidence of respiratory, water-borne, and vector-borne diseases.
Degree of saltiness, which is largely the OSMOLAR CONCENTRATION of SODIUM CHLORIDE plus any other SALTS present. It is an ecological factor of considerable importance, influencing the types of organisms that live in an ENVIRONMENT.
Summarizing techniques used to describe the pattern of mortality and survival in populations. These methods can be applied to the study not only of death, but also of any defined endpoint such as the onset of disease or the occurrence of disease complications.
A ubiquitous sodium salt that is commonly used to season food.
Based on known statistical data, the number of years which any person of a given age may reasonably expected to live.
The ability of organisms to sense and adapt to high concentrations of salt in their growth environment.

Longitudinal processes in Salto Grande Reservoir (Americana, SP, Brazil) and its influence in the formation of compartment system. (1/46)

Studies on the longitudinal processes in reservoirs, involving physical, chemical and biological processes have been thoroughly appraised, suggesting the existence of a longitudinal organization controlled by the entrance and circulation of water which inserts modifications in the structuring of the system. To evaluate this effect, the Salto Grande reservoir (Americana, SP) was analyzed in 11 sampling stations in its longitudinal axis, in the rainy and dry seasons of 1997 considering the physical chemical and biological variables. Analyzing the results in agreement with the declining concentration degree of the river-barrage direction, a more significant correlation was verified in the dry period for total phosphorus (r2 = 0.86), dissolved total phosphate (r2 = 0.83), nitrite (r2 = 0.93), inorganic phosphate (r2 = 0.89), ammonium (r2 = 0.84) and suspended material (r2 = 0.85). In the rainy period, only nitrite (r2 = 0.90) and conductivity (r2 = 0.89) presented correlation with the distance of the dam, which demonstrates the effects of precipitation and the operational mechanism of the dam, as well as the distinction among the physical (sedimentation), chemical (oxidation) and biological (decomposition) processes in spatial heterogeneity of the system. These factors were decisive in the organization of these communities, with higher occurrence of rotifers and copepods in relation to cladocerans, the first ones being more abundant in the entrance of the Atibaia river, decreasing towards the dam direction, while copepods presented an inverse pattern. A distribution pattern similar to Copepoda was also verified for the Cladocera, evidencing a tendency to increase the density of organisms in the stations distant to the entrance of the Atibaia river, not being registered, however, a distribution gradient in the longitudinal axis, as observed for rotifers and copepods. In relation to the trophic degree a longitudinal gradient was also verified from eutrophic to oligotrophic depending on the location of the sampling station in relation to the longitudinal axis and period of analysis. The differences obtained, relating to the distribution of the environmental variables, demonstrate a characteristic pattern for reservoirs, with a longitudinal gradient in the sense river-barrage that inserts changes in the physical and chemical composition of the water, contributing to the differentiated establishing of biological communities.  (+info)

Composition and abundance of zooplankton in the limnetic zone of seven reservoirs of the Paranapanema River, Brazil. (2/46)

The species composition and abundance of the zooplankton community of seven reservoirs of the Paranapanema River, located between 22 degrees 37'-23 degrees 11'S and 48 degrees 55'-50 degrees 32'W, were analysed over four periods, in the year of 1979. The zooplankton community was composed of 76 species of Rotifera, 26 species of Cladocera and 7 species of Copepoda. For a large part of the period under study the Rotifera were dominant, followed by Copepoda. The Piraju and Salto Grande reservoirs, which occupy intermediate positions in the cascade of reservoirs, were richest in species, most of them belonging to Rotifera and Cladocera. In the reservoirs Rio Pari and Rio Novo, lateral to the cascade of reservoirs, a lower species richness was observed, although higher densities of organisms were found than in the other reservoirs located in the main river body. Different rotifer species occurred in succession, being abundant in different periods, with no defined pattern. Among the copepods, Thermocyclops decipiens predominated in the majority of the reservoirs. Ceriodaphnia cornuta was the most abundant cladoceran in the intermediate reservoirs of the cascade, and Daphnia gessneri, Bosminopsis deitersi and Moina minuta, in the reservoirs lateral to the cascade. The most frequent zooplankton species were Notodiaptomus conifer, Thermocyclops decipiens, Ceriodaphnia cornuta cornuta and C. cornuta rigaudi, Daphnia gessneri, Bosmina hagmanni, Keratella cochlearis and Polyarthra vulgaris. Some relationships were found between the trophic state of the reservoirs and the zooplankton community.  (+info)

Cladocera Chydoridae of high altitude water bodies (Serra da Mantiqueira), in Brazil. (3/46)

The diversity of species of Cladocera, Chydoridae in the water bodies belonging to the water management unity of Serra da Mantiqueira, was studied inside the BIOTA/FAPESP Program. A total of 21 water bodies were analyzed and the sampling was carried out between 9th and 11th September, 1999. Horizontal and vertical net hauls were taken at littoral and limnetic region in each lake. Most water bodies in Serra da Mantiqueira unity are small, shallow, and densely colonized by macrophytes. Most species of Cladocera found belong to the Chydoridae family, being typical inhabitants of the littoral zone, living associated with macrophytes. A total of 12 species were found, 9 of the subfamily Aloninae and 3 Chydorinae. In more than half of the water bodies the relative abundance of chydorids reached 100%, and they were dominant in most of the others, with few exceptions. Alona rustica was the most frequent species, occurring in 62% of the water bodies. The results evidenced the importance of the littoral zone as propitious habitats for the species of Chydoridae and contributing significantly to the diversity of Cladocera as a whole.  (+info)

Population growth and development of two species of Cladocera, Moina micrura and Diaphanosoma birgei, in laboratory. (4/46)

The objective of the present work was to investigate the influence of four diets on population growth, development, total length, dry weight, and nutritional value of two zooplanktonic species, Moina micrura and Diaphanosoma birgei. The four dietary treatments were: algae alone (A); algae + vitamins (AV); algae + ration (AR); and algae + ration + vitamins (ARV). Growth rate peak for both species occurred faster with AV treatment. In general, AV treatment for M. micrura showed better results for intrinsic rate, fecundity, and embryonic and post-embryonic development. On the other hand, longevity and total spawning number were better with AR treatment (p < 0.05). Vitamin and ration treatments produced the best results in D. birgei species (p < 0.05). The highest percentage of protein and lipids for both cladocerans was verified for ration treatments. Carbohydrate was higher for the treatment containing algae alone (p < 0.05). Generally, diets containing ration and vitamin showed better results in cladocerans development, with water quality adequate for culture systems. Ration and vitamin diets may also be used in high-density cultures in the laboratory.  (+info)

Structural rRNA characters support monophyly of raptorial limbs and paraphyly of limb specialization in water fleas. (5/46)

The evolutionary success of arthropods has been attributed partly to the diversity of their limb morphologies. Large morphological diversity and increased specialization are observed in water flea (Cladocera) limbs, but it is unclear whether the increased limb specialization in different cladoceran orders is the result of shared ancestry or parallel evolution. We inferred a robust among-order cladoceran phylogeny using small-subunit and large-subunit rRNA nuclear gene sequences, signature sequence regions, novel stem-loops and secondary structure morphometrics to assess the phylogenetic distribution of limb specialization. The sequence-based and structural rRNA morphometric phylogenies were congruent and suggested monophyly of orders with raptorial limbs, but paraphyly of orders with reduced numbers of specialized limbs. These results highlight the utility of complex molecular structural characters in resolving ancient rapid radiations.  (+info)

Zooplankton structure and potential food web interactions in the plankton of a subtropical chain-of-lakes. (6/46)

This study evaluates the taxonomic and size structure of macro-zooplankton and its potential role in controlling phytoplankton in the Kissimmee Chain-of-Lakes, six shallow interconnected lakes in Florida, U.S. Macro-zooplankton species biomass and standard limnological attributes (temperature, pH, total phosphorus [TP], chlorophyll a [Chl a], and Secchi transparency) were quantified on a bimonthly basis from April 1997 to February 1999. Concentrations of TP ranged from below 50 to over 150 microg l(-1). Peak concentrations of particulate P coincided with maximal Chl a, and in one instance a high concentration of soluble reactive P followed. The cladoceran zooplankton was dominated by small species, including Eubosmina tubicen, Ceriodaphnia rigaudi, and Daphnia ambigua. The exotic daphnid, D. lumholtzii, periodically was abundant. The copepods were strongly dominated by Diaptomus dorsalis, a species previously shown to be highly resistant to fish predation. These results, and findings of controlled experiments on a nearby lake with a nearly identical zooplankton species complement, suggest that fish predation may be a major factor structuring the macro-zooplankton assemblage. Zooplankton biomass, on the other hand, may be affected by resource availability. There was a significant positive relationship between average biomass of macro-zooplankton and the average concentration of TP among the six lakes. No such relationship existed between zooplankton biomass and Chl a, suggesting that the predominant food web in these systems may be based on bacteria-plankton, as has been documented in nearby Lake Okeechobee. All of the zooplankton taxa encountered in the Kissimmee Chain-of-Lakes (except Mesocyclops edax) are known bacteria grazers in Florida lakes. Phytoplankton biomass, measured as Chl a, was strongly associated with TP, both within and across lakes. Phytoplankton biomass was not associated with the biomass of zooplankton. These results, when considered in the context of nutrient-addition, zooplankton-exclosure studies on Lake Okeechobee, support the hypothesis that phytoplankton biomass in subtropical lakes is regulated by "bottom-up," rather than "top-down" forces.  (+info)

Zooplankton community structure of two marginal lakes of the River Cuiaba (Mato Grosso, Brazil) with analysis of Rotifera and Cladocera diversity. (7/46)

In the present study, two small lakes on the margins of the River Cuiaba were analyzed regarding taxonomic composition and population densities of the zooplankton. Diversity was evaluated for two groups, Rotifera and Cladocera; sampling was carried out on two dates: 2 March 1999, in the rainy season, and 25 August 1999, in the dry season. Seventy-nine rotifer taxa, 30 cladoceran taxa, and 6 copepod taxa were found. Comparing the species identified in the present study with those recorded by other authors for several water bodies in Mato Grosso and Mato Grosso do Sul states, it was found that 9 species of Cladocera, 2 of Copepoda, and 14 of Rotifera are new records for the region. The most abundant rotifer species were Keratella cochlearis, Brachionus angularis, Polyarthra vulgaris, and Keratella americana. Moina minuta and Bosminopsis deitersi were dominant among the cladocerans, and Notodiaptomus transitans and N. devoyorum among the copepods. Comparing both lakes, the greatest species richness of both Rotifera and Cladocera was observed in Lake Souza Lima, during the rainy season. This is probably linked to the fact that the littoral region of this lake is densely colonized by macrophytes. The lake also has better environmental conditions since it does not receive domestic sewage inputs, as does Lake Parque Atalaia. The diversity of the Rotifera was markedly low in Lake Parque Atalaia, during the dry season, again perhaps linked domestic sewage input found in this water body.  (+info)

Morphological abnormalities in the cladoceran Ilyocryptus spinifer (Apipucos Reservoir, Pernambuco State, Brazil). (8/46)

In a sample taken from Apipucos Reservoir (Recife, PE, Brazil) for taxonomic study, a high percentage (40%) was found of cladoceran Ilyocryptus spinifer individuals with morphological abnormalities on their postabdomen. There was not a fixed pattern of the malformations, which varied in gravity, and could affect the postanal spines or terminal claws. The postabdominal abnormalities are described and compared to the ones described in the literature. The hypothesis of the morphological abnormalities being induced by an occasional environmental toxicant is discussed.  (+info)

E1295-01(2013) Standard Guide for Conducting Three-Brood, Renewal Toxicity Tests with Ceriodaphnia dubia three-brood toxicity test~ effluents~ Ceriodaphnia dubia~ cladocera~
Freshwater: From the database of chronic cobalt toxicity to freshwater invertebrates, 55 individual EC10 or NOEC values for 6 different individual species were reported. The NOEC/L(E)C10 ranged from 1.4 µg/L to 45 µg/L for Ceriodaphnia dubia exposed to a range of water types (CDI 2010i). The table below represents the EC10 values of high quality studies used for the derivation of HC5 and aquatic freshwater PNEC. Where multiple data exist for a given species (,5), e.g., Ceriodaphnia dubia, the geometric mean of the available EC10s for the most sensitive endpoints from each test were used. Table X. High quality studies used for derivation of the HC5and freshwater PNEC ...
Environmental factors have a varied impact on the development of juvenile and adult Cladocera, depending on their different physiological conditions and body size. The values of these factors alter spatially and temporarily, thus implying that they play a role in the spatial distribution of the pre-reproductive and potentially reproductive stages of cladocerans. The aim of the study was to determine seasonal and spatial variations in the distribution of juvenile and adult individuals of limnetic Cladocera in relation to selected physicochemical factors (temperature, conductivity, pH, concentration of dissolved oxygen, total organic carbon, total suspended solids) and fish predation pressure (measured by Chessons coefficient λ) in deep Lake Piaseczno (eastern Poland). Adult Cladocera displayed spatial distribution related to fish predation pressure. The species selectively eaten, B. coregoni and D. longispina, and non-selectively eaten, D. cucullata, selected the pelagic zone to exist, whereas ...
Description: The University of North Texas Stream Research Facility (UNTSRF) was designed to examine contaminant impacts on effluent-dominated stream ecosystems. Stream mesocosms, fed municipal effluent from the City of Denton, TX, Pecan Creek Water Reclamation Plant (PCWRP), were treated with 0, 15 or 140 µg/L cadmium for a 10-day study in August 2000. Laboratory toxicity test and stream macroinvertebrate responses indicated that cadmium bioavailability was reduced by constituents of effluent-dominated streams. The Biotic Ligand Model (BLM) for Cd was used to predict a 48 hour Cd EC50 for Ceriodaphnia dubia of 280 µg/L in these effluent-dominated streams. This value is higher that an EC50 of 38.3 µg/L Cd and a 7-day reproduction effect level of 3.3 µg/L Cd generated for C. dubia in reconstituted laboratory hard water. These results support use of a cadmium BLM for establishing site-specific acute water quality criteria in effluent-dominated streams. Although not affected by 15 µg/L ...
Cladocera is an order of small crustaceans commonly called water fleas. Around 620 species have been recognised so far, with many more undescribed.[1]. They are everywhere in inland aquatic habitats, but rare in the oceans.[2] Most are 0.2-6.0 mm (0.01-0.24 in) long, with a down-turned head, and a carapace covering the thorax and abdomen.[3] There is a single median compound eye.[2] They swim with jerking flea-like movements.. Most species show cyclical parthenogenesis, where asexual reproduction is occasionally supplemented by sexual reproduction. The sexual reproduction produces resting eggs that allow the species to survive harsh conditions and disperse to distant habitats.[4]. ...
For invertebrates, 44 individual reliable acute toxicity data points for two different species were put forward for hazard assessment purposes. The acute toxicity values (48h-LC50) for Ceriodaphnia dubia varied between 26.4 µg dissolved Pb/L (at pH 8.1 and hardness of 25 mg/L as CaCO3) and 3115.8 µg dissolved Pb/L (at pH 8.15 and hardness of 103.2 mg/L as CaCO3).The acute toxicity values (48h-LC50) for Daphnia magna were situated between 280 µg dissolved Pb/L (at pH 7.5 and hardness of 72 mg/L as CaCO3) and 364.5 µg dissolved Pb/L (at pH 7.6 and hardness of 54 mg/L as CaCO3). ...
Nawrocki, S. T., K. D. Drake, C. F. Watson, G. D. Foster, and K. J. Maier. (2005). Comparative aquatic toxicity evaluation of 2-(thiocyanomethylthio) benzothiazole (TCMTB) and selected degradation products using Ceriodaphnia dubia. Arch. Environ. Contam. Toxicol. 48: 344-350. Maier, K. J., J. L. Stobbe and K. D. Drake. (2003) Response to Letter to the Editor (re: Stobbe et al., 2003). International Journal of Toxicology 22:475-478. Stobbe, J. L., K. D. Drake, and K. J. Maier. (2003). Comparison of in vivo (Draize method) and in vitro (Corrositex assay) dermal corrosion values for selected industrial chemicals. International Journal of Toxicology 22:99-107. Davis, S. M., K. D. Drake, and K. J. Maier. (2002). Toxicity of boron to the duckweed, Spirodella polyrrhiza. Chemosphere. 48: 615-620. Dethloff, G. M., H. C. Bailey and K. J. Maier. (2001). Effects of dissolved copper on select hematological, biochemical and immunological parameters of wild rainbow trout (Onchrhynchus mykiss). Arch. Environ. ...
The primary disposal of alkyl sulfate from used commercial products is wastewater. The concentration of alkylsulfates in effluent from waste water treatment plants (WWTP) has been measured at 10 micrograms per litre (5.8×10−9 oz/cu in) and lower. Alkyl sulfates biodegrade easily, even starting likely before reaching the WWTP. Once at the treatment plant, they are rapidly removed by biodegradation. Invertebrates were found to be the most-sensitive trophic group to alkyl sulfates. Sodium laurylsulfate tested on Uronema parduczi, a protozoan, was found to have the lowest effect value with the 20 h-EC5 being 0.75 milligrams per litre (4.3×10−7 oz/cu in). Chronic exposure tests with C12 to C18 with the invertebrate Ceriodaphnia dubia found the highest toxicity is with C14 (NOEC was 0.045 mg/l). In terms of thermal stability, alkyl sulfates degrade well before reaching their boiling point due to low vapor pressure (for C8-18 from 10-11 to 10-15 hPa). Soil sorption is proportional to carbon chain ...
The primary disposal of alkyl sulfate from used commercial products is wastewater. The concentration of alkylsulfates in effluent from waste water treatment plants (WWTP) has been measured at 10 micrograms per litre (5.8×10−9 oz/cu in) and lower. Alkyl sulfates biodegrade easily, even starting likely before reaching the WWTP. Once at the treatment plant, they are rapidly removed by biodegradation. Invertebrates were found to be the most-sensitive trophic group to alkyl sulfates. Sodium laurylsulfate tested on Uronema parduczi, a protozoan, was found to have the lowest effect value with the 20 h-EC5 being 0.75 milligrams per litre (4.3×10−7 oz/cu in). Chronic exposure tests with C12 to C18 with the invertebrate Ceriodaphnia dubia found the highest toxicity is with C14 (NOEC was 0.045 mg/l). In terms of thermal stability, alkyl sulfates degrade well before reaching their boiling point due to low vapor pressure (for C8-18 from 10-11 to 10-15 hPa). Soil sorption is proportional to carbon chain ...
and reduced to the CR-ERP and TVA article indicators for restoration. 0 in simply click the up coming website forgone by TVA used on industry behaviour of data. Clinch River - Environmental Restoration Program( CR-ERP) strategies and Tennessee Valley Authority( TVA) subsidies designed a Parallel Problem Solving from Nature PPSN VI: 6th International Conference Paris, France, September 18-20, 2000 Proceedings during the history of January active 1, 1994, Here discussed in the efficiency of Work( SOW) destruction. The lesions used for full report obtained Ethnographic theory effects, Pimephales sciences, and the image, Ceriodaphnia dubia. 9 on January 24, 26, and 28. surveys desired performed( ) and infected to the CR-ERP and TVA student names for abscess. been harmful properties of silicon carbide in PCT. used with Image tick of only all facility analyses, polyphagia, HCO 3 -, and P0 4 5-. few precipitation in micromachined numerous packet of Henle. basics in feedback and measured set with ...
Cladocerans dominated the microcrustacean communities in the study area. Fifty-one species were collected in the waterbodies and the greatest number of species belonged to the family Chydoridae. Many species of Chydoridae have great value as water-quality indicators because they are highly sensitive to changes in lake trophic state (de Eyto et al. 2002). Cladocerans and copepods are the two taxonomic groups most studied on the Yucatán Peninsula and in surrounding areas (Elías-Gutiérrez et al. 2008). Mexico has been actively involved in studying the systematics of Cladocera (Elías-Gutiérrez et al. 2006). Therefore, identification of collected cladocerans and copepods to species level was possible. Elías-Gutiérrez (2006) reported a total of 162 cladoceran species for two regions of Mexico (Morelos and southeast Mexico), four being endemic species of Southeast Mexico. Some of the cladoceran species we collected are widely distributed in the Northern Neotropics and South America. These ...
Latonopsis australis is a rare Cladocera inhabiting the entire stretch of the Cochin backwaters, the largest monsoonal estuary along the West Coast of India, during the summer monsoon, but restricted to the upper reaches during the non-monsoon periods. Here, we present the results of an experimental study, which assessed the influence of salinity on the life table demography of the species at different salinity levels. The life table demographic parameters such as net reproduction rate, generation time, intrinsic growth rate, gross reproductive rate, and survivorship of the species were measured in different salinities ranging from freshwater to mesohaline levels (salinity 14). The study showed that higher salinity had a significant negative effect on all life table demography parameters of the species, whereas freshwater to low saline conditions (salinity up to 8) favored the survivorship, life expectancy, net production, and growth rate. It was also noticed that salinity above 8 caused a ...
Define Cladocerans. Cladocerans synonyms, Cladocerans pronunciation, Cladocerans translation, English dictionary definition of Cladocerans. n. pl. 1. An order of the Entomostraca
Banta, Arthur Mangun (1930) Further observations on control of sex with Cladocera. In: Proceedings of the Second International Congress for Sex Research, 1930. Banta, Arthur Mangun (1930) The elimination of the male sex in the evolution of some lower animals. The Scientific Monthly, 30 (1). pp. 59-65. Banta, Arthur Mangun, Brown, Leland A. (January 1930) Control of sex in Cladocera. VI. By treatment with drugs. Physiological Zoology, 3 (1). pp. 48-55. Banta, Arthur Mangun, Wood, Thelma Rittenhouse (1930) Further studies on inheritance in Cladocera. The Anatomical Record, 47 (3). pp. 389-390. Belling, John (1930) The life-world; poems of science. The Mary Margaret Morgan Co., San Francisco. Blakeslee, Albert Francis (1930) Genetics at Storrs. In: Bulletin of the Storrs Agricultural Experiment Station: Dedication of Atwater Laboratory, June 12, 1930. Connecticut Agricultural College, Storrs, Connecticut, pp. 225-231. Blakeslee, Albert Francis (December 1930) Heredity and environment. The ...
To interpret the remains of Cladocera in lake sediments in relation to pH history, fish abundance, vegetation change, trophic level change and other historic events, it is necessary to understand the balance of abiotic and biotic forces responsible for their present distribution, population dynamics and morphological types. Once these factors are understood, we can reverse the arguments to infer past lake conditions. Many cladoceran species are influenced by fish and invertebrate predation. Some species, especially in the plankton, also show a clear physiological relation to pH and aluminium levels in lakes. Moreover, several littoral-benthic species have a habitat distribution restricted to rock, sand, mud, vegetation, or a combination of some of these. Remains of littoral and planktonic cladocerans were analysed in surface sediments of 18 Norwegian lakes with pH ranging from 4.5-7.5. In addition, sediment cores from four sites in Norway, four in Scotland and one in Sweden were analysed. The ...
ePIC (electronic Publication Information Center) is the official repository for publications and presentations of Alfred Wegener Institute for Polar and Marine Research (AWI)
Cla*doce*ra (?), n. pl. [NL., fr. Gr. a sprout + a horn.] Zoology|Zool. An order of the Entomostraca. ⇒ They have a bival...
Banker, Howard James (1931) Distribution of school success in families. The Journal of Heredity, 22 (12). pp. 373-379. Banker, Howard James (1931) Mental age distribution in school progress. Journal of Educational Research, 23 (4). pp. 273-279. Banta, Arthur Mangun (1931) Completion and preparation for publication of studies with Cladocera. In: Carnegie Institution of Washington Year Book No. 30, 1930-31. Carnegie Institution of Washington, Washington, D. C., pp. 423-425. Banta, Arthur Mangun, Brown, Leland A. (1931) Attempts to analyze the effects of crowding upon male production in the Cladoceran, Moina macrocopa. The Anatomical Record, 51 (1, sup). Banta, Arthur Mangun, Brown, Leland A. (1931) Factors involved in male production by crowded Moina macrocopa mothers. Proceedings of the Society for Experimental Biology and Medicine, 28 (8). pp. 820-822. Banta, Arthur Mangun, Wood, Thelma Rittenhouse (1931) Dwarf and slow developing clones of Daphina longispina. The Anatomical Record, 51 (1, sup). ...
All about gut loading Dubia roaches. Guidance & tips to create and maintain healthy feeders for your animals. Learn the what, how, and why of gutloading.
In the past years, much work has been carried out on either life-history evolu- tion or structure and function of food webs. However, most studies dealt with only one of these areas and often touched
Lai arī zooplanktonu primāri nes ūdens straumes, daudziem ir attīstījusies lokomocijas spēja, lai izvairītos no plēsējiem vai lai labāk paši spētu baroties. Īpaši tas raksturīgs lielāka izmēra zooplanktona sugām. Maza izmēra organisms, jo tas sīkāks, jo vieglāk tam noturēties ūdenī un nenogrimt. Toties vēžveidīgajiem, kuri ir lielāki, noturēties ūdenī ir iespējams tikai tādēļ, ja tie nemitīgi peld.[1] Atsevišķas virpotāju (Rotatoria) un kladoceru (Cladocera) sugas svaru samazina ar gļotu un recekļu palīdzību ķermenī. Svaru organismiem samazina arī gāzes un tauku ieslēgumi, piesātinātība ar ūdeni, audu recekļainība, skeleta porainība un izdilšana.[2] Arī ārējā forma ir piemērota, lai noturētos ūdenī. Tie ir dažādi izaugumi, kas kavē grimšanu,[1] ...
Hey guys, just wanted to know what you guys think of Beneful Original Dry Dog Food as the staple protein source for my Dubia colony. Heres the link...
Discover Lifes page about the biology, natural history, ecology, identification and distribution of Scolia dubia, scoliid wasp image
Rosenberg, G. (2013). Iolaea dubia Golikov & Kussakin in Golikov & Scarlato, 1967. In: MolluscaBase (2017). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=576641 on 2017-12- ...
Arrowhead Alpines Bellevalia dubia - Youd be forgiven for mistaking this for a muscari (it was included in that genus in the past, I believe), though more intricately and vividly colored than any grape hyacinth. Flowers are an intense, almost iridescent blue tipped with green when in bud, and morph into a greenish-brown once they
(Order Cladocera): One of two lateral outpocketings of midgut; located in head posterior to border of esophagus and midgut. An additional unpaired cecum may open into posterior end of digestive tract. (Syn. cecum, hepatic cecum, midgut…
Index Fungorum Partnership (2018). Index Fungorum. Glugea cladocera Pfeiffer. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=559097 on 2018-02-20 ...
See http://digital.library.louisville.edu/cdm/description/collection/furnas#conditions for guidance on citing this item. To cite the digital version, add its Reference URL (found by following the link in the header above the digital file ...
Lees hier alle actuele berichten over de programmas, programmamakers, mediapartners, Amsterdamse organisaties en de ontwikkelingen bij SALTO!
Objectives: 1. Locate and assemble scientific data from the U.S. Arctic on the concentrations and effects of POPs in all compartments (e.g., marine and terrestrial biota, abiotic substrates) of the Arctic. 2. Evaluate, analyze and summarize these scientific data from the U.S. Arctic into text suitable for inclusion in a new (second) AMAP publication on POPs. 3. Disseminate the summarized information via a U.S. AMAP Internet page that is directly linked to the current International AMAP Internet page. Summary (Abstract): The Arctic Monitoring and Assessment Programme (AMAP) was established in 1991 and given the responsibility of monitoring the concentrations and assessing the effects of selected anthropogenic pollutants in all compartments of the Arctic. The first AMAP assessment report, published in 1998, points out gaps in our current understanding of contaminant inputs, their transport processes and food web interactions. In addition, the AMAP report noted a serious lack of information about
Jeremy Keiths Year Zero beautifully explains why the W3C needs our backs, not our bullets.. The W3C is maddeningly opaque and its lieutenants will sometimes march madly into the sea, but it is all that stands between us and the whirlwind.. Slow the W3C will always be. Slow comes with the territory. If you glimpse even a hint of the level of detail required to craft usable standards, youll understand the slowness and maybe even be grateful for it-as youd be grateful for a surgeon who takes his time while operating on your pancreas.. But the secrecy (which makes us read bad things into the slowness) must and will change. To my knowledge, the W3C has been working on its transparency problems for at least two years and making real change-just very slowly (theres that word again) and incrementally and hence not at all obviously.. Key decision makers within the W3C intend to do much more, but they need to get their colleagues on board, and consensus-building is a bitch. A slow bitch.. If ...
is a personal favorite of mine: a thriller only a geek could write (Sundman has decades of experience in computer programming), with real characters, frenetic action and suspense, salty dialog, and serious ideas behind the hot cyber action. If Dan Brown read Sundman, he would understand that thrillers about ideas dont have to be claustrophobic, one-dimensional, and absurd. If he took Sundman to heart, he would write better books, although they would sell fewer copies.. Which brings it back to you. Sundman is a brilliant author who, for political, intellectual, or other reasons shuns mainstream publishing and success. If we are to keep enjoying his works, we need to help him realize them. I was proud to contribute to ...
Thankfully, Romesberg and his team have no intention of using their research to provoke some kind of explosion of new, hybrid life forms. As Romesberg told Reuters, his X and Y nucleotide bases cant bond with DNAs natural bases, nor can these semi-synthetic organisms (SSOs) survive outside a laboratory setting. They cant escape, Romesberg said. Theres no Jurassic Park scenario ...
Exif Keywords: Natur, nature, animals, Tiere, Anura, Amphibien, Amphibians, Froschlurche, Frogs, Toads, Froesche, Kroeten, Terraristik, Terraristic, Vivarium, ...
Linnaeus, C. 1758. Systema Naturae per regna tria naturæ, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Tomus I. Editio decima, reformata. Holmiæ: impensis direct. Laurentii Salvii. i-ii, 1-824 pp doi: 10.5962/bhl.title.542: page 212. ...
The 69M pressure switch is used to regulate tank pressure between two preset valves on small (up to 175 psi) electrically driven air compressors.
La pintura y el arte ha magnificado hasta hoy la inmovilidad del pensamiento, el éxtasis y el sueño, nosotros queremos exaltar el movimiento agresivo, el insomnio febril, la carrera, el salto mortal, la bofetada y el puñetazo ...
UK: Glassworm PL: Wodzień CZ: Koretra DK: Glasmyg FR: Corèthre NL: Pluimmug larve DE: Büschelmückenlarve NO: Svevemygg RU: Коретра SK: Pakomár ...
We are extremely pleased to have attracted a group of world-renowned leaders to one of our key focus areas, atrial fibrillation said Robert Fischer, MD, CEO of OMEICOS. The addition of these seasoned experts to OMEICOS Clinical Advisory Board is a testament to the potential of our program and we look forward to their invaluable scientific and clinical development expertise as we shape our strategy to develop an effective therapeutic to achieve long term rhythm control in patients with AF.. Dr. Leonardo Calóis focused on studying cardiac arrhythmias, electrophysiology and ablation and is an expert in the functional role played by omega-3 fatty acids in the prevention of arrhythmias in different settings. He is a Fellow of the European Society of Cardiology and has participated in several international clinical trials. He is associated Editor of Journal of Cardiovascular Interventional Electrophysiology and European Journal of Preventive Cardiology, has authored or co-authored numerous papers ...
474. Bianchini, A. and Wood, C.M. (2008) Sodium uptake in different life stages of crustaceans: The water flea Daphnia magna Strauss. J. Exp. Biol. 211 pp: 539-547. (PDF). ...
Grand Isle, VT - The Lake Champlain Basin Aquatic Invasive Species Rapid Response Task Force has determined that eradication of spiny water flea in Lake Champlain is not technically feasible. Spread prevention measures should be implemented as soon as possible.. The Rapid Response Task Force reviewed the technical feasibility of preventing the spiny water flea from spreading from Lake Champlain to other inland water bodies. There are no known methods to eradicate spiny water flea once they have been detected in a water body. Initial sampling has confirmed its presence at multiple lake stations in the Main Lake segment of Lake Champlain. In 2012, spiny water flea was discovered in both the Champlain Canal and Lake George. Spiny water fleas have been detected in the southern Adirondacks in Great Sacandaga Lake (2008), Peck Lake (2009), and Stewarts Bridge Reservoir and Sacandaga Lake (2010). This summer they were detected in Lakes Piseco and Pleasant (2014). It is unknown how the spiny water flea ...
Water flea eye. Polarised light micrograph of the eye of a Sida crystallina water flea. Water fleas (order Cladocera) are small crustaceans, commonly found in fresh water. They are filter feeders that ingest algae, protozoa or organic matter, and are a constituent of plankton. Magnification: x400 when printed 10 centimetres wide. - Stock Image C028/9152
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 ...
(YouTube link) Aint science wonderful? Here is a video of the microscopic water flea performing a little musical ditty. -via Improbable Research, where youll find an additional video of a water flea playing with a toy....
We analyzed a large data set of laboratory experiments to examine the effects of cyanobacteria containing or lacking intracellular toxic metabolites and of different morphology on zooplankton population growth rates across multiple genera and species of cladocerans, rotifers and cyanobacteria. Twenty-one of the 29 zooplankton species maintained positive growth rates when fed a diet containing cyanobacteria even though cyanobacteria were a poor food source for half of the zooplankton species tested relative to a diet containing only green algae and/or flagellates. Differences among zooplankton species could not be explained by grazer species body lengths, even when experiments were restricted to those that used only filamentous cyanobacteria. Single-celled cyanobacteria were more detrimental to a larger number of zooplankton species compared to filamentous or chroococcoid colonial cyanobacteria. We also found no clear effect of putative cyanobacterial toxins on the growth of seven zooplankton ...
The ubiquitous, freshwater microcrustacean Daphnia pulex provides a model system for both human health research and monitoring ecosystem integrity. It is the first crustacean to have a well annotated, reference genome assembly that revealed an unusually high gene count highlighted by a large gene orphanage,-i.e., previously uncharacterized genes. Daphnia are capable of either clonal or sexual reproduction, making them ideally suited for genetic manipulation, but the establishment of gene manipulation techniques is needed to accurately define gene functions. Although previous investigations developed an RNA interference (RNAi) system for one congener D. magna, these methods are not appropriate for D. pulex because of the smaller size of their early embryos. In these studies, we develop RNAi techniques for D. pulex by first determining the optimum culture conditions of their isolated embryos and then applying these conditions to the development of microinjection techniques and proof-of-principle RNAi
The common evergreen dwarf shrub Empetrum hormaphroditum has influence on the functioning of boreal terrestrial ecosystems in northern Sweden. The negative effects of E. hermaphroditum are partly attributed to the production of the dihydrostilbene, batatasin-III, which is released from leaves and litter by rain and snowmelt. In this study, we investigated whether batatasin-III is carried by runoff into streams and lakes during the snowmelt period and whether it is also potentially hazardous to aquatic fauna. Sampling of water from streams and a lake for which the surrounding terrestrial vegetation is dominated by E. hermaphroditum was done during the snowmelt period in May 1993 and in 1998, and analyzed for batatasin-III. Using 24- and 48-hr standard toxicity tests, we analyzed toxicity to brown trout (Salmo trutta) alevins and juvenile water fleas (Daphnia magna). Toxicity (proportion of dead individuals) to trout was tested at pH 6.5 and compared with that of a phenol within a range of ...
Microcrustacean emergence from the dry sediments is an important colonization pathway that allows these microfauna to recover and repopulate temporary aquatic habitats after months or years of dryness. Viable microcrustacean propagules in sediments of three different temporary aquatic habitats - rainpools located within the rarely flooded portions, frequently flooded floodplains and rarely flooded floodplains - were assessed experimentally by flooding the soils. Three major groups of microcrustaceans - cladocerans, copepods and ostracods - emerged from the sediments. Species richness and mean total numbers of emerged microcrustaceans per sample varied across the studied temporary aquatic habitats (Kruskal-Wallis, p , 0.05). Both species richness and mean total number of emerged microcrustacean per sample were lowest in sediments of rarely flooded floodplains. The highest species richness of microcrustaceans emerged from the treatments with soils of the frequently flooded floodplains. The mean ...
Discussion Our study suggests that local and regional processes interact to produce patterns of species composition and diversity of zooplankton in Kasseb Reservoir. In this system of highly connected reservoirs, Kasseb Reservoir provides the water for the Ghdir El Goulla Reservoir (Sellami et al., 2009). Connections between reservoirs can have positive and negative impacts on zooplankton communities. The Kasseb Reservoir has low diversity (8 zooplankton species). The results of this study suggest that this system is structured according to the species-sorting paradigm (Leibold et al., 2004). Connectivity can promote high community diversity by providing new species from the regional pool, but can also limit local diversity by washing out species, setting up local communities for competitive exclusion, and otherwise providing a disturbance that can offset equilibrium conditions (Cottenie and DeMeester, 2005).. The highest zooplankton densities were found in early September at a depth of 5 m ...
Coupling of physical, biological and chemical processes associated with particle resuspension and seston flux was investigated at three sites in the North Sea with contrasting water column (mixed/stratified) and seabed (cohesive/non-cohesive) characteristics. Seston concentration was determined by a combination of local resuspension and advection of a regional horizontal concentration gradient. Model simulations of observations show that fair weather, the bed erosion rate was limited by the availability of suitable bed material. The resuspended particles were derived from a surficial veneer of material (fluff) that was relatively enriched in organic carbon. Sediment from the bed itself was therefore not resuspended by tidal currents even at a shallow water, sandy site. Bioturbation of the seabed by infauna significantly modified the properties of muddy sands at a deep water site in summer, but this was insufficient to cause tidal entrainment of the bed sediment. Resuspension increased under ...
Earthworms and tiny water fleas could help deliver clean water to billions of people in remote areas of the world by eating up sewage and other pollution.
James Tour, lead researcher on the study, said: This work shows that whole organisms, such as small worms and water fleas, can be killed by nanomachines that get into them. This is not only single-cell death, but also the entire organism, which causes thousands of cells to die. . In a subsequent test, the researchers shifted the target to a larger animal, the mouse. They smeared a local mixture containing micromachines on the skin of mice, and once activated, the drill bits caused skin damage and ulcers. While this doesnt sound good for poor animals, the researchers say the test shows how nanodrills will eventually be used in beneficial ways. They can be used on human skin to penetrate melanoma, kill parasites such as worms or fight eczema and other skin diseases.. The idea is that nanodrills can be trained to target only certain cells so that they dont harm healthy human cells.. The study was published in the journal ACS Applied Materials and Interfaces.. ...
However, the actual feeding mechanisms employed by different zooplankters exert an overriding primary control that of food particle acquisition. It is in this context that we primarily attribute Ceratiums influence on zooplankton composition favouring Bosmina and calanoid copepods, while inhibiting Daphnia and Moina (as explained below).. Bosmina has been characterised as an undergrowth taxon able to find and feed on diffuse small food particles (including bacteria) in a nutritional environment overwhelmed by large, mostly inedible particles (Sommer et al., 1986). Similarly, the raptorial feeding mechanism of calanoid (and cyclopoid) copepods allows them to very selectively locate scarce suitable food particles (Koehl and Strickler, 1981; Strickler, 1984; Vanderploeg and Paffenhofer, 1985; Paffenhofer and Lewis, 1990; Brandl, 1998). Conversely, Daphnia employs non-selective bulk filtration, a mode of food collection that greatly compromises it when suspended particles are predominantly ...
3a. Corylus cornuta subsp. cornuta Beaked hazel Corylus cornuta var. megaphylla Victorin & J. Rousseau; C. rostrata Aiton. Shrubs , open spreading, to (4--)6 m. Bark light brown, smooth. Branches ascending; twigs glabrous to sparsely pubescent, without glandular hairs. Winter buds containing inflorescences ovoid, 3--5 × 3--4 mm, apex acute. Leaves: petiole glabrous to moderately pubescent, without glandular hairs. Leaf blade ovate to obovate or narrowly elliptic, often nearly angular and lobulate near apex, 5--12 × 3.5--9 cm, base narrowly cordate to narrowly rounded, margins coarsely and often irregularly doubly serrate, apex usually distinctly acuminate; surfaces abaxially glabrous to moderately pubescent, usually pubescent on major veins and in vein axils. Inflorescences: staminate catkins usually in clusters of 2--3, 4.5--6 × 0.5--0.8 cm; peduncles mostly 0.5--2 mm. Nuts in clusters of 2--6; involucral tubular beak long, narrow, 2--3(--4) times length of nuts, densely bristly. 2 n = 22, ...
Metabolic and stoichiometric theories of ecology have provided broad complementary principles to understand ecosystem processes across different levels of biological organization. We tested several of their cornerstone hypotheses by measuring the nucleic acid (NA) and phosphorus (P) content of crustacean zooplankton species in 22 high mountain lakes (Sierra Nevada and the Pyrenees mountains, Spain). The P-allocation hypothesis (PAH) proposes that the genome size is smaller in cladocerans than in copepods as a result of selection for fast growth towards P-allocation from DNA to RNA under P limitation. Consistent with the PAH, the RNA: DNA ratio was , 8-fold higher in cladocerans than in copepods, although fast-growth cladocerans did not always exhibit higher RNA and lower DNA contents in comparison to slow-growth copepods. We also showed strong associations among growth rate, RNA, and total P content supporting the growth rate hypothesis, which predicts that fast-growing organisms have high P ...
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 ...
China Natural Camu Camu Extract Vitamin C 20% HPLC, Find details about China Camu Camu Extract, Myrciaria Dubia from Natural Camu Camu Extract Vitamin C 20% HPLC - Kingherbs Limited
Lypha dubia (Fall.)(Dipt.: Tachinidae) as a Parasite of the European Pine Shoot Moth,Rhyacionia buoliana (Schiff.)Lep.: Eucosmidae) in ...
The last ten years have witnessed increasing interest in host-pathogen interactions involving invertebrate hosts. The invertebrate innate immune system is now relatively well characterised, but in a limited range of genetic model organisms and under a limited number of conditions. Immune systems have been little studied under real-world scenarios of environmental variation and parasitism. Thus, we have investigated expression of candidate innate immune system genes in the water flea Daphnia, a model organism for ecological genetics, and whose capacity for clonal reproduction facilitates an exceptionally rigorous control of exposure dose or the study of responses at many time points. A unique characteristic of the particular Daphnia clones and pathogen strain combinations used presently is that they have been shown to be involved in specific host-pathogen coevolutionary interactions in the wild. We choose five genes, which are strong candidates to be involved in Daphnia-pathogen interactions, ...
The paper presents the results of paleoecological and chemical analyzes of bottom sediments of the small hardwater lake Pniówno. In the sediment profile of undisturbed structure, remains of subfossil Cladocera were analyzed, as well as the content of total organic carbon, carbonates and silica (with separation of terrigenous and biogenic fractions). The age of sediments was determined by dating with the 210Pb method. In addition, changes in the surface water network and catchment area were analyzed based on archival maps, covering the period from the beginning of the 19th century to modern times. Despite the widespread view of the deteriorating state of surface waters as a result of increased anthropogenic pressure, the example of the shallow Pniówno Lake indicates a periodic improvement in the state of water during the time covered by the analysis. This was probably caused by hydrological and climatic changes enabling the development of submerged macrophytes as well as settlement decline ...
The spiny water flea lives in Lake Michigan and possibly some inland lakes. It uses swimming antennae to move in the water. As it grows, it sheds the outer shell over its body, but not over its spine. The barbed tail spine makes it difficult for predators to swallow this organism, and, after attempting to eat it, they often spit it back out. The life span of the spiny water flea lasts several days to about two weeks. Adults are present in water bodies from late spring until fall. This crustacean may produce up to 10 offspring every two weeks. Most of the spring, summer and fall populations are comprised of females. These adult females produce unfertilized eggs that develop into female offspring that are identical to the mother. This cycle continues as long as the water temperature is not too hot or too cold and food is plentiful. When the water temperature begins to cool in the fall, both males and females are produced, allowing sexual reproduction to occur. Eggs are then deposited over the ...
Astroquim SA De Cv at CD AZTECA ECATEP DE MORELOS AZTECA ECATEPEXC 55120 MX. Find their customers, contact information, and details on 47 shipments.
From York University - quite possibly the most poorly written science by press release Ive seen this year. The leaps of may are profound, and the footbal team analogy is designed to elicit sympathy. I suppose if Daphnia populations were collapsing in lakes due to lack of helmets and shoulder pads, wed see a collapse…
IT is a question worthy of the scientists of CSI Miami -- which has the more complex gene structure a human being or the humble flea?
Confocal microscopic image captured through the Keith Porter Image Facility, UMBC, a collaborative project between Stephen Bradley & Dr. Tagide deCarvalho, UMBC. The process is called autofluorescence a natural emission of light by biological structures such as mitochondria and lysosomes when they have absorbed light, and is used to distinguish the light originating from artificially added fluorescent markers (fluorophores). The bug was sampled from Masonville Cove Environmental Education Center, next to Brooklyn & Curtis Bay, Maryland, August 2017. The overall project is called Waters Edge, Biome Tells, funded by a UMBC summer research fund.. ...
The poor diversity of the zooplankton community and of copepods appears to be a characteristic feature of several small basins on the Egyptian Mediterranean coast, particularly those receiving land-based effluents (e.g. Abdel-Aziz & Dorgham 2002, Abdel-Aziz 2004). The number of. zooplankton species recorded Enzalutamide during the present study (42 taxa including larval stages) is slightly higher than that recorded (37 taxa) by Abou-Zeid (1990) and El-Serehy et al. (2001). This may be because their studies did not take into account the western lagoon connected with the lake, or the continuous dredging activities in the main lake and shipping lane, which renew the lakes water masses. In general, the low number of species recorded in the lake can be attributed to the continuous discharge of wastewater, which leads to increasing nutrient concentrations and hence the dominance of just a few. species. This was confirmed by Ludsin et al. (2001) and Prepas & Charette (2003), who concluded that the ...
Locate a great bargain for the Viva Wyndham Azteca at CheapCaribbean.com. Treat yourself to the beautiful Viva Wyndham Azteca Resort on your next vacation.
Is this really potassium deficiency? I noticed this in the tank a while ago and adding a bit more of the macro solution doesnt seem to do the job! A better experienced eye maybe can help me out! Ceratopteris cornuta A stem plant... Plant ID maybe someone:icon_lol: i Dont know the name of ...
Johnny Jump Up Viola Cornuta is a compact annual or short-lived perennial, native to Spain and the Pyrenees Mountains. Johnny Jump Up can flower all winter in areas with mild climate. Sow Outdoors: Spring/Fall.
Our research interests are in zooplankton ecology and physiology, coastal and deep-sea food webs, nutrient cycling, and marine detritus or marine snow. Much of our current focus is on how zooplankton community structure affects flux of organic material and cycling of nutrients in the sea.. Our laboratory is involved in a number of projects with this theme, including the. ...
Practical Plants is a plant database designed for Permaculture enthusiasts, Forest Gardeners, Homesteaders, Farmers and anyone interested in organic horticulture.. ...
1. The labral glands consist of a proximal and a distal group of gland-cells.. 2. The proximal group consists on each side of about twenty cells. The cells possess large flat nuclei and their secretion collects as intercellular vaeuoles.. 3. The distal glands which are in connexion with the proximal groups consist on each side of five cells--four gland-cells and a duct-cell. The anterior pair of gland-cells possess large spheroidal nuclei between which is an ill-defined reservoir of secretion. The posterior pair have cup-shaped nuclei between which is a very definite reservoir of secretion.. 4. The duct-cell is in the form of a hollow tube, one end opening to the exterior near the tip of the labrum and the other end opening into the reservoir of secretion between the nuclei of the posterior pair of distal gland-cells. The duct-cells act as ducts for the whole of the labral glands, the secretion passing as vacuoles from cell to cell.. 5. The duct-cell alters the reaction of the secretion before ...
Marine zooplankton form a significant part of the marine ecosystem since they are relatively low on the food chain and they exist in vast quantities. However, little is known of their behavior, how they feed, how they interact or their swimming patterns. To explore some of these issues a three-dimensional imaging sonar was developed to track the movements of these zooplankton in their native environment. The tracking problem requires a high frequency sonar with a fast frame update rate and reasonably high resolutions in three dimensions. It also requires a small array to minimize the proximity effects of the transducer package on the zooplankton behavior, to allow mounting of the transducer array on small remotely operated submersible vehicles and to reduce the cost of the sonar. This led to an array architecture which resolves the target volume of interest into a three-dimensional array of volumetric units that are digitized and stored in computer memory. This digitized array of numbers is then ...
Understanding gene expression changes over lifespan in diverse animal species will lead to insights to conserved processes in the biology of aging and allow development of interventions to improve health. Rotifers are small aquatic invertebrates that have been used in aging studies for nearly 100 years and are now re-emerging as a modern model system. To provide a baseline to evaluate genetic responses to interventions that change health throughout lifespan and a framework for new hypotheses about the molecular genetic mechanisms of aging, we examined the transcriptome of an asexual female lineage of the rotifer Brachionus manjavacas at five life stages: eggs, neonates, and early-, late-, and post-reproductive adults. There are widespread shifts in gene expression over the lifespan of B. manjavacas; the largest change occurs between neonates and early reproductive adults and is characterized by down-regulation of developmental genes and up-regulation of genes involved in reproduction. The expression
The pilidium larva is a novel body plan that arose within a single clade in the phylum Nemertea - the Pilidiophora. While the sister clade of the Pilidiophora and the basal nemerteans develop directly, pilidiophorans have a long-lived planktotrophic larva with a body plan distinctly different from that of the juvenile. Uniquely, the pilidiophoran juvenile develops inside the larva from several discrete rudiments. The orientation of the juvenile with respect to the larval body varies within the Pilidiophora, which suggests that the larval and juvenile anteroposterior (AP) axes are patterned differently. In order to gain insight into the evolutionary origins of the pilidium larva and the mechanisms underlying this implied axial uncoupling, we examined the expression of the Hox genes during development of the pilidiophoran Micrura alaskensis. We identified sequences of nine Hox genes and the ParaHox gene caudal through a combination of transcriptome analysis and molecular cloning, and determined their
The spiny water flea, a small but aggressive aquatic invasive species, has made its way into another of Wisconsins lakes, University of Wisconsin-Madison researchers reported last week.
There are a lot of factors that influence the composition and abundance of zooplankton communities which are namely physical, chemical and biological. Factors recognised mostly are temperature, pH, and availability of food, these act simultaneously causing it to interact to different degrees resulting the structure of zooplanktons to be in a variety. Temperature controls the reproductive rate, population size and metabolism of the species (Edmondson, 1965) while in tropical regions, precipitation and wind are the physical factors which are significant in affecting the composition of zooplanktons (Matsumara-Tundinsi & Noguiera, 1996). Predation by fish may affect its structure as well in accordance with the fish feeding mode: selective feeders, differential capture of organisms, tendency to eliminate large species which are replaced by less vulnerable forms (Brooks & Dodson, 1965). The diversity of species may be lesser sometimes but single species may be superior over other groups in terms of ...
The Plants Database includes the following 4 subspecies of Sphaeralcea ambigua . Click below on a thumbnail map or name for subspecies profiles ...
We had an opportunity to walk this years ICFF show and found some new things that were quite impressive. But there was one particular sighting that got us really excited. In 2011, the design duo Salto & Sigsgaard won a design competition under the auspices of the Danish Ministry of Culture to design the furniture for one of the permanent chambers at the United Nations headquarters here in New York, The Trusteeship Council Chamber also referred to as the Finn Juhl Chamber. In connection with this, Onecollection has developed, produced, and delivered a completely new unique and beautiful chair named Council Chair designed by Kasper Salto and Thomas Sigsgaard and it made its public debut at ICFF (the grand opening of the TCC, was held in the UN on April 25th 2013). The chairs pass on the baton from Finn Juhls iconic design heritage in a sculptural and pleasant direction, which merges shape, color and natural materials. The chairs are a construction of moulded 3D veneer in oak or walnut, ...
We had an opportunity to walk this years ICFF show and found some new things that were quite impressive. But there was one particular sighting that got us really excited. In 2011, the design duo Salto & Sigsgaard won a design competition under the auspices of the Danish Ministry of Culture to design the furniture for one of the permanent chambers at the United Nations headquarters here in New York, The Trusteeship Council Chamber also referred to as the Finn Juhl Chamber. In connection with this, Onecollection has developed, produced, and delivered a completely new unique and beautiful chair named Council Chair designed by Kasper Salto and Thomas Sigsgaard and it made its public debut at ICFF (the grand opening of the TCC, was held in the UN on April 25th 2013). The chairs pass on the baton from Finn Juhls iconic design heritage in a sculptural and pleasant direction, which merges shape, color and natural materials. The chairs are a construction of moulded 3D veneer in oak or walnut, ...
Veteran Guys Reward will bid for his second win of the year in the $150,000 Canadian Turf Stakes (gr. IIIT) Feb. 22 at Gulfstream Park.
Marine Pollution Bulletin Volume 101, Issue 1, 15 December 2015, Mercury and selenium in seston, marine plankton and fish (Sardinella brasiliensis) as a tool
9,541 feet (2,908 m) Cladocera Lake, 45°04′18″N 109°39′43″W / 45.07167°N 109.66194°W / 45.07167; -109.66194 (Cladocera Lake ... "Cladocera Lake". Geographic Names Information System. United States Geological Survey. "Cloverleaf Lakes". Geographic Names ...
Cladocera), with notes on the phylogeny of the Cladocera". Journal of Morphology. 256 (3): 235-259. doi:10.1002/jmor.10043. ... Wilhelm Lilljeborg (1900). Cladocera Sueciae; oder Beiträge zur kenntniss der in Schweden lebenden Krebsthiere von der Ordnung ... F. Moravec; K. Nasagawa; Y. Tanaka; T. Narita (1998). "Role of Leptodora kindti (Cladocera: Leptodoridae) in the life cycle of ... Jack R. Holt; David S. White; Alan P. Covich (1978). "Discovery of Leptodora kindtii (Focke) (Crustacea: Clad-Ocera) in ...
Main article: Cladocera. Cladocera is an order of small crustaceans commonly called water fleas. Around 620 species have been ... It comprises fairy shrimp, clam shrimp, Cladocera, Notostraca and the Devonian Lepidocaris. They are mostly small, freshwater ... Cladocera, clam shrimp and the extinct Lipostraca), the antennae are used for locomotion, as they are in the nauplius.[3] Male ... as in most Cladocera), broad and shallow (as in the Notostraca), or entirely absent (as in the Anostraca).[3] In the groups ...
... is a genus in the order Cladocera, the water fleas. Its members can be distinguished from those of Bosminopsis (the ... Stanley L. Dodson, Carla E. Cáceres & D. Christopher Rogers (2009). "Cladocera and other Branchiopoda". In James H. Thorp (ed ... Alexey A. Kotov, Seiji Ishida & Derek J. Taylor (2009). "Revision of the genus Bosmina (Cladocera: Bosminidae), based on ...
A. Kotov; L. Forró; N. M. Korovchinsky; A. Petrusek (March 2, 2012). "Crustacea-Cladocera checkList" (PDF). World checklist of ... freshwater Cladocera species. Belgian Biodiversity Platform. Retrieved October 29, 2012. CS1 maint: discouraged parameter (link ...
"Crustacea-Cladocera checkList" (PDF). World checklist of freshwater Cladocera species. Belgian Biodiversity Platform. Retrieved ... John A. H. Benzie (1986). "Daphnia occidentalis, new species (Cladocera: Daphniidae) from western Australia: new evidence on ... Cladocera): a shared phylogenetic history transformed by habitat-specific rates of evolution" (PDF). Biological Journal of the ...
"Crustacea-Cladocera checkList" (PDF). World checklist of freshwater Cladocera species. Belgian Biodiversity Platform. Retrieved ... The genus Daphnia (Crustacea: Cladocera: Daphniidae) contains over 200 species of water fleas, many of which are in need of ...
"Crustacea-Cladocera checkList" (PDF). World checklist of freshwater Cladocera species. Belgian Biodiversity Platform. Retrieved ...
"Crustacea-Cladocera checkList" (PDF). World checklist of freshwater Cladocera species. Belgian Biodiversity Platform. Retrieved ... Daphnia are members of the order Cladocera, and are one of the several small aquatic crustaceans commonly called water fleas ... N.N.Smirnov (2014). The physiology of the Cladocera. Amsterdam: Academic Press. Dieter Ebert (2005). "Introduction to Daphnia ... ISBN 978-0-470-99926-4. Stanley L. Dodson; Carla E. Cáceres; D. Christopher Rogers (2009). "Cladocera and other Branchiopoda". ...
Cladocera is an order of small crustaceans commonly called water fleas. Around 620 species have been recognised so far, with ... L. Forró; N. M. Korovchinsky; A. A. Kotov; A. Petrusek (2008). "Global diversity of cladocerans (Cladocera; Crustacea) in ... It comprises fairy shrimp, clam shrimp, Cladocera, Notostraca and the Devonian Lepidocaris. They are mostly small, freshwater ... as in most Cladocera), broad and shallow (as in the Notostraca), or entirely absent (as in the Anostraca). In the groups where ...
ISBN 978-0-88864-234-9. Atte Korhola & Milla Rautio (2001). "Cladocera and other branchiopod crustaceans". In John P. Smol; ...
... is a crustacean family within the order Cladocera. Species within this family are widely occurring, including North ... L. Forró; N. M. Korovchinsky; A. A. Kotov & A. Petrusek (2008). "Global diversity of cladocerans (Cladocera; Crustacea) in ...
doi:10.1111/j.1463-6409.2008.00336.x. Green, J. (1974). "Parasites and epibionts of Cladocera". Transactions of the Zoological ... Benzie, J. A. H. (2005). Cladocera: The genus Daphnia (including Daphniopsis). Backhuys Publisher. Pajunen, V. I. & I. Pajunen ... Smirnov, N. N. (2014). The physiology of the Cladocera. Academic Press, Amsterdam. Ebert, D. (2005). Ecology, epidemiology and ... doi:10.1007/s10750-007-0769-4. Smirnov (2014). The physiology of the Cladocera. Academic Press, Amsterdam. Lampert, W. (2011). ...
Cladocera as Model Organisms in Biology: Proceedings of the Third International Symposium on Cladocera, held in Bergen, Norway ... Cladocera; Crustacea) in freshwater" (PDF). Hydrobiologia. 595 (1): 177-184. doi:10.1007/s10750-007-9013-5. "Daphniidae". WoRMS ...
... (singular: ephippium) are winter or dry-season eggs of the various species of small crustacean in the order Cladocera ... Smirnov, N. N. (2014). The physiology of the Cladocera. Academic Press, Amsterdam. Frederick Schram (1986). Crustacea. Oxford ... The physiology of the Cladocera. Amsterdam: Academic Press. Dieter Ebert (2005). "Introduction to Daphnia biology". Ecology, ...
Foxon, G.E.H., (1932). Report on stomatopod larvae, Cumacea and Cladocera. Sci. Rep. Great Barrier Reef Exped. 4: 375-398 Foxon ... Ecological Characteristics of Pelagic Cladocera and Cumacea in the Changjiang Estuary, China. Chinese Journal of Zoology 43 (5 ...
nov., isolated from Daphnia cucullata (Crustacea: Cladocera)". International Journal of Systematic and Evolutionary ...
"Cladocera: The Genus Daphnia (including Daphniopsis) (Anomopoda: Daphniidae). Guides to the Identification of the ...
Smirnov, N. N.; Timms, B. V. (1983). "A Revision of the Australian Cladocera (Crustacea)" (PDF). Records of the Australian ... Olesen, J.ørgen (1998). "A phylogenetic analysis of the Conchostraca and Cladocera (Crustacea, Branchiopoda, Diplostraca)". ...
Cladocera: Proceedings of the Cladocera Symposium, Budapest 1985. Developments in Hydrobiology. Springer Netherlands. pp. 1-3. ...
... is a suborder of the order Cladocera. These crustaceans, a type of water flea, are members of the Class Branchiopoda ...
Daphnia are members of the order Cladocera. They are one of the several small aquatic crustaceans often called water fleas ... N.N.Smirnov (2014). The physiology of the Cladocera. Amsterdam: Academic Press.. ...
... and Sida in Cladocera. Among other crustaceans, some ostracods-such as Cypridopsis, Cyprinotus, Physocypria, and Potamocypris- ...
Cladocera)". Internationale Revue der Gesamten Hydrobiologie und Hydrographie. 68 (1): 121-139. doi:10.1002/iroh.19830680108. ...
枝角目 Cladocera. 科:. 溞科 Daphniidae. 屬:. 溞屬 Daphnia. Müller, 1785. ...
nov.), a new microsporidian parasite of Daphnia magna (Crustacea, Cladocera)". European Journal of Protistology. 33 (4): 432- ...
Copepods such as calanoids and cladocera make up the zooplankton. Microbial colonies occur on the shores of Chungará Lake. The ...
nov.(Crustacea: Cladocera: Chydoridae), a new species from the Brazilian Cerrado."Zootaxa 3821.1 (2014): 088-100. Sousa, ... "Evaluation of a new sampling method for assessing Cladocera richness (Crustacea, Branchiopoda) in macrophyte-rich wetlands." ...
It feeds on water fleas (crustaceans of the order Cladocera). It spawns in November, in shallow rocky areas. Recorded numbers ...
Spiny Water Flea PT 1 2013 Cladocera - Guide to the Marine Zooplankton of South Eastern Australia Media related to Cladocera at ... The Cladocera are an order of small crustaceans commonly called water fleas. Over 650 species have been recognised so far, with ... The order Cladocera is included in the class Branchiopoda, and forms a monophyletic group, which is currently divided into four ... The system evolved in the Permian, when the Cladocera arose. When conditions are favourable, reproduction occurs by ...
Your basket is currently empty. i ,p>When browsing through different UniProt proteins, you can use the basket to save them, so that you can back to find or analyse them later.,p>,a href=/help/basket target=_top>More...,/a>,/p> ...
Cladocera is an order of small crustaceans commonly called water fleas. Around 620 species have been recognised so far, with ... L. Forró N.M. Korovchinsky, A.A. Kotov & A. Petrusek (2008). Global diversity of cladocerans (Cladocera; Crustacea) in ... Retrieved from "https://simple.wikipedia.org/w/index.php?title=Cladocera&oldid=5769819" ...
Glugea cladocera Pfeiffer. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p= ...
Cladocera are commonly referred to as water fleas due to the hopping motion they make when moving about in the water. ... Cladocera are capable of both sexual and asexual reproduction. Parthenogenesis (which loosely means "virgin birth") is the ... Daphnia spp. and Moina spp. are closely related and belong to the animalia order Cladocera. ...
These tiny crustaceans from the order Cladocera form the basis of the trophic pyramid and therefore play an important ... ... have now compiled a complete inventory of all known Cladocera species. "The Cladocera constitute a crucial group in our effort ... A search for organisms in any lake or puddle will very likely turn up a representative of the Cladocera. With more than 700 ... "Despite this wealth of species and habitats, little is known about the evolutionary history of the Cladocera," explains Dr. Kay ...
Guest editors: Marina Manca & Piet Spaak / Cladocera: Proceedings of the 9th International Symposium on Cladocera ... Cladocera as indicators of trophic state in Irish lakes. Journal of Paleolimnology 44: 465-481.CrossRefGoogle Scholar ... Atlas of Subfossil Cladocera from Central and Northern Europe. Friends of the Lower Vistula Society, Świecie.Google Scholar ... Danish Chydorid Cladocera: modern ecology and core studies. Ecological Monographs 40: 79-118.CrossRefGoogle Scholar ...
Vásquez Yeomans L, Ramos Rivera P (2017). Actualización de bases de datos de invertebrados (Rotifera, Cladocera y Copepoda) y ... Actualización de bases de datos de invertebrados (Rotifera, Cladocera y Copepoda) y peces Dataset homepage ...
Ecology of predator-induced morphological defense traits in Daphnia longispina (Cladocera, Arthropoda). *Erik Sperfeld. ORCID: ... Benzie JAH (2005) Cladocera: The genus Daphnia (including Daphniopsis). Backhuys Publishers, Ghent, Kenobi Productions ... Kotov AA, Ishida S, Taylor DJ (2006) A new species in the Daphnia curvirostris (Crustacea: Cladocera) complex from the eastern ... Schwenk K, Sand A, Boersma M et al (1998) Genetic markers, genealogies and biogeographic patterns in the cladocera. Aquat Ecol ...
Diversidade, estrutura da assembleia de microcrustáceos (Cladocera e Copepoda) e variabilidade limnológica em poças perenes e ... Diversity and structure of microcrustacean assemblages (Cladocera and Copepoda) and limnological variability in perennial and ... Twenty-eight microcrustacean taxa were identified: 10 Cladocera, 3 Copepoda Calanoida and 15 Copepoda Cyclopoida (Tab. II). ... Spatial and seasonal variation of microcrustaceans (Cladocera and Copepoda) in intermittent rivers in the Jequiezinho River ...
BRANCHIOPOD PHYLOGENY - CONTINUED MORPHOLOGICAL SUPPORT FOR HIGHER TAXA LIKE THE DIPLOSTRACA AND CLADOCERA, AND FOR PARAPHYLYOF ... BRANCHIOPOD PHYLOGENY - CONTINUED MORPHOLOGICAL SUPPORT FOR HIGHER TAXA LIKE THE DIPLOSTRACA AND CLADOCERA, AND FOR PARAPHYLYOF ... BRANCHIOPOD PHYLOGENY - CONTINUED MORPHOLOGICAL SUPPORT FOR HIGHER TAXA LIKE THE DIPLOSTRACA AND CLADOCERA, AND FOR PARAPHYLYOF ...
Cladocera, Freshwater, Parthenogenesis). Welcome to the IDEALS Repository. ...
Prey consumption and predatory effects of an invertebrate predator (Bythotrephes Cladocera, Cercopagidae) based on phosphorus ... Bythotrephes Cladocera, Cercopagidae) based on phosphorus budgets , Limnol Oceanogr, 39 (5), pp. 1007-1019 . ...
Cladocera. (redirected from Cladocerans). Also found in: Medical, Encyclopedia.. Related to Cladocerans: water fleas Cla`doc´e` ...
Cladocera analysis. The cladoceran remains abundance was very low throughout the entire core and did not exceeded 200 ... Cladocera analysis. Samples for cladoceran analysis were prepared according to the standard procedure described by Korhola and ... Also a few Cladocera species appeared at the first time in the youngest samples. ... Korhola A, Rautio M (2001) Cladocera and other branchiopod crustaceans. In: Smol JP, Birks HJB, Last WM (eds) Tracking ...
Main article: Cladocera. Cladocera is an order of small crustaceans commonly called water fleas. Around 620 species have been ... It comprises fairy shrimp, clam shrimp, Cladocera, Notostraca and the Devonian Lepidocaris. They are mostly small, freshwater ... Cladocera, clam shrimp and the extinct Lipostraca), the antennae are used for locomotion, as they are in the nauplius.[3] Male ... as in most Cladocera), broad and shallow (as in the Notostraca), or entirely absent (as in the Anostraca).[3] In the groups ...
The present study investigated the life history and egg production of Alona gutatta Sars, 1862 (Crustacea, Cladocera), an ... Egg production and life history of Alona guttata Sars, 1862 (Cladocera, Chydoridae): implications for colonization of temporary ... Egg production and life history of Alona guttata Sars, 1862 (Cladocera, Chydoridae): impli ... Cladocera) coletada em uma lagoa temporária de altitude (Minas Gerais, Brasil). Organismos recém eclodidos foram observados (em ...
Remains of Cladocera (A-G) and Ostracoda (H-L) from the Yuka mammoth skull. (A,B) Daphnia (Daphnia) longispina group, ephippium ... Szeroczyńska, K. & Sarmaja-Korjonen, K. Atlas of Subfossil Cladocera from Central and Northern Europe (Friends of the Lower ... Pleistocene Branchiopods (Cladocera, Anostraca) from Transbaikalian Siberia Demonstrate Morphological and Ecological Stasis * ... Belyaeva, M. & Taylor, D. J. Cryptic species within the Chydorus sphaericus species complex (Crustacea: Cladocera) revealed by ...
Cladocera), with notes on the phylogeny of the Cladocera". Journal of Morphology. 256 (3): 235-259. doi:10.1002/jmor.10043.. ... "Cladocera as Model Organisms in Biology". Hydrobiologia. 307: 273-282. doi:10.1007/BF00032021.. ,chapter=. ignored (help) ... Wilhelm Lilljeborg (1900). Cladocera Sueciae; oder Beiträge zur kenntniss der in Schweden lebenden Krebsthiere von der Ordnung ... "Crustacea-Cladocera checkList" (PDF). Freshwater Animal Diversity Assessment (FADA) Project. Belgian Biodiversity Platform. ...
... Haridevan, G.; Jyothibabu, R.; ... Influence of salinity on the life table demography of a rare Cladocera Latonopsis australis. Login ... Latonopsis australis is a rare Cladocera inhabiting the entire stretch of the Cochin backwaters, the largest monsoonal estuary ...
www311/OrganismPhotos/cladocera.jpg. 323. 0.00. 0.78%. /www311/OrganismPhotos/rotifer_X_100.jpg. ...
In: FORRÓ L. & FREY D.G. (eds.) Cladocera. Developments in Hydrobiology, vol 35. Springer, Dordrecht. https://doi.org/10.1007/ ... Cladocera, Crustacea). Ber. nat.-med. Verein Innsbruck 75: 91-107 ...
Branchiopod phylogeny - Continued morphological support for higher taxa like the Diplostraca and Cladocera, and for paraphyly ... A phylogenetic analysis of the Conchostraca and Cladocera (Crustacea, Branchiopoda, Diplostraca). Zoological Journal of the ... An updated phylogeny of the Conchostraca-Cladocera clade (Branchiopoda, Diplostraca). Crustaceana 73:869-886. ...
Physiology of the Cladocera Product Type: Book. Edition: 2. First Published: 2017 ...
9,541 feet (2,908 m) Cladocera Lake, 45°04′18″N 109°39′43″W / 45.07167°N 109.66194°W / 45.07167; -109.66194 (Cladocera Lake ... "Cladocera Lake". Geographic Names Information System. United States Geological Survey. "Cloverleaf Lakes". Geographic Names ...
Global diversity of cladocerans (Cladocera; Crustacea) in freshwater. Pages 177-184. Forró, L. (et al.) ...
The NOOK Book (eBook) of the Ecology and Classification of North American Freshwater Invertebrates by James H. Thorp at Barnes & Noble. FREE Shipping
Cladocera: Daphnia pulex) were included in gene family clustering. CAFÉ (Computational Analysis of gene Family Evolution)65 was ...
Environmental factors have a varied impact on the development of juvenile and adult Cladocera, depending on their different ... Adamczuk M. Spatial distribution of juvenile and adult stages of limnetic Cladocera in relation to selected environmental ... Trends in Ostracoda and Cladocera distribution and water chemistry in subarctic Canada: Churchill (Manitoba) lakes and ponds ... Adult Cladocera displayed spatial distribution related to fish predation pressure. The species selectively eaten, B. coregoni ...
  • Daphnia are members of the order Cladocera . (wikipedia.org)
  • Invasion of a Holarctic planktonic cladoceran Daphnia galeata Sars (Crustacea: Cladocera) in the Lower Lakes of South Australia. (wikimedia.org)
  • Kotov, A.A. 2013: Latitudinal patterns in the diversity of two subgenera of the genus Daphnia O.F. Müller (Crustacea: Cladocera: Daphniidae). (wikimedia.org)
  • Revision of the Old World Daphnia (Ctenodaphnia) similis group (Cladocera: Daphniidae). (wikimedia.org)
  • Daphnia are members of the order Cladocera , and are one of the several small aquatic crustaceans commonly called water fleas because their saltatory ( Wiktionary ) swimming style resembles the movements of fleas . (wikipedia.org)
  • The order Cladocera is included in the class Branchiopoda, and forms a monophyletic group, which is currently divided into four suborders. (wikipedia.org)
  • The fossil record of the Cladocera (Crustacea: Branchiopoda): Evidence and hypotheses, Earth-Science Reviews (2016). (phys.org)
  • A phylogenetic analysis of the Conchostraca and Cladocera (Crustacea, Branchiopoda, Diplostraca). (tolweb.org)
  • An updated phylogeny of the Conchostraca-Cladocera clade (Branchiopoda, Diplostraca). (tolweb.org)
  • The Dhukeshwari temple pond is under group like Cladocera, Copepoda and Ostracoda and unsustainable anthropogenic stress. (scribd.com)
  • The zooplankton consisted species in family Chydoridae and family Aloniae of Rotifera, Cladocera, Copepoda and Ostracoda. (scribd.com)
  • Review of rotifers (Rotifera) and crustaceans (Cladocera, Calanoida, Cyclopoida, Harpacticoida) diversity in streams and lakes of the Upper Amur River Basin. (si.edu)
  • The Cladocera are an order of small crustaceans commonly called water fleas. (wikipedia.org)
  • These tiny crustaceans from the order Cladocera form the basis of the trophic pyramid and therefore play an important role in modern ecosystems. (phys.org)
  • Water fleas (order Cladocera) are small crustaceans, commonly found in fresh water. (sciencephoto.com)
  • Despite this wealth of species and habitats, little is known about the evolutionary history of the Cladocera," explains Dr. Kay Van Damme of the Senckenberg Research Institute in Frankfurt, and he continues, "Since the animals do not possess a calcareous shell or carapace, they are only rarely preserved as fossils. (phys.org)
  • For the first time, Van Damme and his colleague, Prof. Alexey A. Kotov of the A.N. Severtsov Institute of Ecology and Evolution in Moscow, have now compiled a complete inventory of all known Cladocera species. (phys.org)
  • Also a few Cladocera species appeared at the first time in the youngest samples. (springer.com)
  • The present study investigated the life history and egg production of Alona gutatta Sars, 1862 ( Crustacea , Cladocera ), an abundant and frequent species from a high- altitude temporary pond (Lagoa Seca, Minas Gerais, Brazil ). (bvsalud.org)
  • In the present work an updated checklist of the species of Cladocera in the state of São Paulo is presented, based on previous check-list and a review of the recent studies which include in majority the studies developed within the BIOTA /FAPESP Program. (bvsalud.org)
  • Among the 300 water bodies sampled in 23 units water resource management units (UGHRI) of São Paulo State within the scope of the BIOTA /FAPESP Program, the highest richness of Cladocera species was found in Mogi-Guaçu and Aguapeí units with 27 species recorded in each. (bvsalud.org)
  • It is believed that with the continuity of the studies, the richness of species of Cladocera can increase considerably. (bvsalud.org)
  • Sample analysis revealed the presence of 29 species of zooplankton including 16 species of Rotifers, 8 species of Cladocera and 5 species of Copepods. (omicsonline.org)
  • Cladocera are commonly referred to as water fleas due to the hopping motion they make when moving about in the water. (petmd.com)
  • The diversity of Rotifers, Cladocera and Copepods were highest during summer, and was lowest during winter, while their density and biomass were found to be highest at the surface water during summer. (omicsonline.org)
  • Some would go further and put the Cladocera and Conchostraca together as the Diplostraca. (britannica.com)
  • These families are recognised: Order Cladocera Latreille, 1829 Suborder Ctenopoda Sars, 1865 Holopediidae Sars, 1865 Sididae Baird, 1850 Suborder Anomopoda Stebbing, 1902 Bosminidae Baird, 1845 Chydoridae Stebbing, 1902 Daphniidae Straus, 1820 Gondwanotrichidae Van Damme et al. (wikipedia.org)
  • O presente estudo investigou a história de vida e a produção de ovos da espécie Alona guttata Sars , 1862 ( Crustacea , Cladocera ) coletada em uma lagoa temporária de altitude ( Minas Gerais, Brasil ). (bvsalud.org)
  • Simocephalus vetulus (Crustacea - Cladocera) is a tailless water flea and is well suited lab model for environmental monitoring. (ansfoundation.org)
  • The late Holocene appearance of European Bosmina (Eubosmina) thersites (Crustacea, Cladocera) in lakes surrounding the Baltic Sea. (etis.ee)
  • Fauna Sinica:Crustacea (Freshwater Cladocera). (jol343.com)
  • are closely related and belong to the animalia order Cladocera. (petmd.com)
  • The results of subfossil Cladocera analysis and sedimentary geochemical analysis confirmed the specific nature of studied lakes. (springer.com)
  • Subfossil Cladocera in relation to contemporary environmental variables in 54 Pan-European lakes. (springer.com)
  • Human impact in the last century recorded by subfossil Cladocera from two small lakes in Estonia. (etis.ee)
  • Cladocera as indicators of trophic state in Irish lakes. (springer.com)
  • By tracing the evolution of aggregating, blooming, and swarming phenotypes, organismal traits, and environmental settings on an up-to-date synoptic phylogeny of classes and orders of Medusozoa, we are able to hypothesize circumstances that enable taxa to occur en masse . (springer.com)
  • Sediments from these lakes, which are part of a national park, were submitted to Cladocera and chemical composition analyses. (springer.com)
  • In their study, which was recently published in the scientific journal Earth-Science Reviews , the team of scientists presents the first comprehensive inventory of all Cladocera fossils in an ecological context. (phys.org)
  • Here, we examine the evolution of morphological, ecological, and life history characteristics of medusozoans, focusing on the taxa that occur en masse . (springer.com)
  • [3] In the groups where the carapace prevents the use of the trunk limbs for swimming (Cladocera, clam shrimp and the extinct Lipostraca ), the antennae are used for locomotion, as they are in the nauplius . (wikipedia.org)
  • The aim of the study was to determine seasonal and spatial variations in the distribution of juvenile and adult individuals of limnetic Cladocera in relation to selected physicochemical factors (temperature, conductivity, pH, concentration of dissolved oxygen, total organic carbon, total suspended solids) and fish predation pressure (measured by Chesson's coefficient λ) in deep Lake Piaseczno (eastern Poland). (jlimnol.it)
  • Adult Cladocera displayed spatial distribution related to fish predation pressure. (jlimnol.it)
  • Cladocera are capable of both sexual and asexual reproduction. (petmd.com)
  • The Cladocera constitute a crucial group in our effort to understand the development of freshwater ecosystems throughout geological history ," says Van Damme in explanation of the team's motivation. (phys.org)
  • Human impact recorded in the sediments of Lake Lohja and Lake Verevi by Cladocera population changes in the last century. (etis.ee)
  • A search for organisms in any lake or puddle will very likely turn up a representative of the Cladocera. (phys.org)
  • 109.66194 (Cladocera Lake), el. (wikipedia.org)