daphnia

Summary

Summary: A diverse genus of minute freshwater CRUSTACEA, of the suborder CLADOCERA. They are a major food source for both young and adult freshwater fish.

Top Publications

  1. ncbi The ecoresponsive genome of Daphnia pulex
    John K Colbourne
    Center for Genomics and Bioinformatics, Indiana University, 915 East Third Street, Bloomington, IN 47405, USA
    Science 331:555-61. 2011
  2. ncbi Extensive, recent intron gains in Daphnia populations
    Wenli Li
    Biology Department, Indiana University, Bloomington, IN 47405, USA
    Science 326:1260-2. 2009
  3. ncbi Host-parasite 'Red Queen' dynamics archived in pond sediment
    Ellen Decaestecker
    Laboratory of Aquatic Ecology and Evolutionary Biology, Katholieke Universiteit Leuven, Charles De Beriotstraat 32, 3000 Leuven, Belgium
    Nature 450:870-3. 2007
  4. ncbi Role of microcystins in poisoning and food ingestion inhibition of Daphnia galeata caused by the cyanobacterium Microcystis aeruginosa
    T Rohrlack
    Research Group Ecology, Department of Biology, Humboldt University, D 10099 Berlin, Germany
    Appl Environ Microbiol 65:737-9. 1999
  5. ncbi The Dscam homologue of the crustacean Daphnia is diversified by alternative splicing like in insects
    Daniela Brites
    Zoologisches Institut, Evolutionsbiologie, Universitat Basel, Vesalgasse 1, Switzerland
    Mol Biol Evol 25:1429-39. 2008
  6. ncbi Genetic diversity of Daphnia magna populations enhances resistance to parasites
    Florian Altermatt
    Zoologisches Institut, Universitat Basel, Vesalgasse 1, CH 4051 Basel, Switzerland
    Ecol Lett 11:918-28. 2008
  7. ncbi The cost of being common: evidence from natural Daphnia populations
    Justyna Wolinska
    Indiana University, Department of Biology, Bloomington, Indiana 47405, USA
    Evolution 63:1893-901. 2009
  8. ncbi Ecotoxicity of engineered nanoparticles to aquatic invertebrates: a brief review and recommendations for future toxicity testing
    A Baun
    Department of Environmental Engineering, Technical University of Denmark, Miljoevej, Building 113, 2800 Kgs Lyngby, Denmark
    Ecotoxicology 17:387-95. 2008
  9. ncbi Clonal erosion and genetic drift in cyclical parthenogens--the interplay between neutral and selective processes
    J Vanoverbeke
    Laboratory of Aquatic Ecology and Evolutionary Biology, KU Leuven, Leuven, Belgium
    J Evol Biol 23:997-1012. 2010
  10. ncbi Quantitative DNA-methylation in Daphnia magna and effects of multigeneration Zn exposure
    M B Vandegehuchte
    Laboratory of Environmental Toxicology and Aquatic Ecology, Ghent University, Ghent, Belgium
    Comp Biochem Physiol C Toxicol Pharmacol 150:343-8. 2009

Research Grants

  1. Effects of environmental contamination on gene copy number variation: Molecular b
    Joseph Shaw; Fiscal Year: 2010
  2. Daphnia DNA Microarrays
    Owen Hughes; Fiscal Year: 2002
  3. Daphnia Functional Genomics Resource
    MICHAEL PFRENDER; Fiscal Year: 2007
  4. MASS SPECTRAL SEQUENCING OF CARBOHYDRATES
    Vernon Reinhold; Fiscal Year: 2007
  5. MASS SPECTRAL SEQUENCING OF CARBOHYDRATES
    Vernon Reinhold; Fiscal Year: 2009
  6. Fathead minnow DNA microarrays
    Owen Hughes; Fiscal Year: 2002
  7. Induction of breast cancer in MMTVneu mice
    William Baldwin; Fiscal Year: 2002
  8. Genomic search for bone mass QTLs
    Hong Wen Deng; Fiscal Year: 2010
  9. The Rate and Molecular Spectrum of Spontaneous Mutations
    Michael Lynch; Fiscal Year: 2009
  10. NEURAL CONTROL OF SENSORY ACQUISITION
    Mark Nelson; Fiscal Year: 2000

Detail Information

Publications275 found, 100 shown here

  1. ncbi The ecoresponsive genome of Daphnia pulex
    John K Colbourne
    Center for Genomics and Bioinformatics, Indiana University, 915 East Third Street, Bloomington, IN 47405, USA
    Science 331:555-61. 2011
    We describe the draft genome of the microcrustacean Daphnia pulex, which is only 200 megabases and contains at least 30,907 genes...
  2. ncbi Extensive, recent intron gains in Daphnia populations
    Wenli Li
    Biology Department, Indiana University, Bloomington, IN 47405, USA
    Science 326:1260-2. 2009
    ..approach that detected 24 discordant intron/exon boundaries between the whole-genome sequences of two Daphnia pulex isolates. Sequencing of presence/absence loci across a collection of D...
  3. ncbi Host-parasite 'Red Queen' dynamics archived in pond sediment
    Ellen Decaestecker
    Laboratory of Aquatic Ecology and Evolutionary Biology, Katholieke Universiteit Leuven, Charles De Beriotstraat 32, 3000 Leuven, Belgium
    Nature 450:870-3. 2007
    ..Dormant stages of both the water flea Daphnia and its microparasites are conserved in lake sediments, providing an archive of past gene pools...
  4. ncbi Role of microcystins in poisoning and food ingestion inhibition of Daphnia galeata caused by the cyanobacterium Microcystis aeruginosa
    T Rohrlack
    Research Group Ecology, Department of Biology, Humboldt University, D 10099 Berlin, Germany
    Appl Environ Microbiol 65:737-9. 1999
    The effects of microcystins on Daphnia galeata, a typical filter-feeding grazer in eutrophic lakes, were investigated...
  5. ncbi The Dscam homologue of the crustacean Daphnia is diversified by alternative splicing like in insects
    Daniela Brites
    Zoologisches Institut, Evolutionsbiologie, Universitat Basel, Vesalgasse 1, Switzerland
    Mol Biol Evol 25:1429-39. 2008
    ..We describe structural, expression, and evolutionary aspects of a Dscam homolog in 2 species of the crustacean Daphnia. The Dscam of Daphnia generates up to 13,000 different transcripts by the alternative splicing of variable exons...
  6. ncbi Genetic diversity of Daphnia magna populations enhances resistance to parasites
    Florian Altermatt
    Zoologisches Institut, Universitat Basel, Vesalgasse 1, CH 4051 Basel, Switzerland
    Ecol Lett 11:918-28. 2008
    ..We followed the spread of a microsporidian parasite in semi-natural outdoor Daphnia magna populations of low and high genetic diversity...
  7. ncbi The cost of being common: evidence from natural Daphnia populations
    Justyna Wolinska
    Indiana University, Department of Biology, Bloomington, Indiana 47405, USA
    Evolution 63:1893-901. 2009
    ..Queen theory operates in the wild, we studied the genetic structure of populations of the crustacean waterflea (Daphnia), in relation to their infection levels, for which we collected multiple samples from a variety of lakes...
  8. ncbi Ecotoxicity of engineered nanoparticles to aquatic invertebrates: a brief review and recommendations for future toxicity testing
    A Baun
    Department of Environmental Engineering, Technical University of Denmark, Miljoevej, Building 113, 2800 Kgs Lyngby, Denmark
    Ecotoxicology 17:387-95. 2008
    ..In addition, the majority of the studies have used Daphnia magna as the test organism...
  9. ncbi Clonal erosion and genetic drift in cyclical parthenogens--the interplay between neutral and selective processes
    J Vanoverbeke
    Laboratory of Aquatic Ecology and Evolutionary Biology, KU Leuven, Leuven, Belgium
    J Evol Biol 23:997-1012. 2010
    ..Using a physiologically structured model of the life history of Daphnia, we investigated to what extent clonal erosion associated with selection during the clonal phase affects the ..
  10. ncbi Quantitative DNA-methylation in Daphnia magna and effects of multigeneration Zn exposure
    M B Vandegehuchte
    Laboratory of Environmental Toxicology and Aquatic Ecology, Ghent University, Ghent, Belgium
    Comp Biochem Physiol C Toxicol Pharmacol 150:343-8. 2009
    ..The presence of DNA methylation in Daphnia magna has only very recently been demonstrated, although not quantified...
  11. ncbi Ecotoxicity of nanoparticles of CuO and ZnO in natural water
    I Blinova
    Laboratory of Molecular Genetics, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, Tallinn 12618, Estonia
    Environ Pollut 158:41-7. 2010
    ..The acute toxicity of CuO and ZnO nanoparticles in artificial freshwater (AFW) and in natural waters to crustaceans Daphnia magna and Thamnocephalus platyurus and protozoan Tetrahymena thermophila was compared...
  12. ncbi Toxicity and bioaccumulation of TiO2 nanoparticle aggregates in Daphnia magna
    Xiaoshan Zhu
    Department of Civil, Environmental, and Sustainable Engineering, Arizona State University, USA
    Chemosphere 78:209-15. 2010
    ..including modified acute (72h) and chronic (21d) toxicity tests as well as nTiO(2) accumulation analysis using Daphnia magna as a model organism...
  13. ncbi Toxicity and bioaccumulation of xenobiotic organic compounds in the presence of aqueous suspensions of aggregates of nano-C(60)
    A Baun
    Department of Environmental Engineering, Technical University of Denmark, Building 113, DK 2800 Kgs Lyngby, Denmark
    Aquat Toxicol 86:379-87. 2008
    ..systems was studied in a series of toxicity tests with algae (Pseudokirchneriella subcapitata) and crustaceans (Daphnia magna)...
  14. ncbi Assays with Daphnia magna and Danio rerio as alert systems in aquatic toxicology
    J Martins
    Departamento de Zoologia e Antropologia, Faculdade de Ciencias, Universidade do Porto, Praça Gomes Teixeira, 4099 002 Porto, Portugal
    Environ Int 33:414-25. 2007
    ..The aim of this research was to evaluate the use of ecotoxicity assays with Daphnia magna and Danio rerio as alert systems in water contaminated with toxic substances...
  15. ncbi Fractionating nanosilver: importance for determining toxicity to aquatic test organisms
    Alan J Kennedy
    US Army Engineer Research and Development Center, Vicksburg, Mississippi 39180, United States
    Environ Sci Technol 44:9571-7. 2010
    ..and coatings (citrate, polyvinylpyrrolidone, EDTA, proprietary) was assessed using three aquatic test organisms (Daphnia magna, Pimephales promelas, Pseudokirchneriella subcapitata)...
  16. ncbi Cloning of the unculturable parasite Pasteuria ramosa and its Daphnia host reveals extreme genotype-genotype interactions
    Pepijn Luijckx
    Institut of Zoology, Evolutionsbiologie, University of Basel, Basel, Switzerland
    Ecol Lett 14:125-31. 2011
    ..We obtained the first clones of the unculturable bacterium Pasteuria ramosa, a parasite of Daphnia magna...
  17. ncbi Introduction of foreign DNA into the water flea, Daphnia magna, by electroporation
    Yasuhiko Kato
    Okazaki Institute for Integrative Bioscience, Japan
    Ecotoxicology 19:589-92. 2010
    ..This is the first report of gene introduction to daphnids and, together with the emerging genome sequences, will be useful for the expanding our use of daphnid in ecotoxicology...
  18. ncbi Effects of pesticides on community structure and ecosystem functions in agricultural streams of three biogeographical regions in Europe
    Ralf Bernhard Schäfer
    UFZ Helmholtz Centre for Environmental Research, Dept System Ecotoxicology, Permoser Strasse 15, 04318 Leipzig, Germany
    Sci Total Environ 382:272-85. 2007
    ..the community structure was detectable at a concentration range as low as 1/100 to 1/1000 the acute 48 h-LC50 of Daphnia magna...
  19. ncbi Postexposure feeding depression: a new toxicity endpoint for use in laboratory studies with Daphnia magna
    Ruth A McWilliam
    Environment Group, Institute of Aquaculture, University of Stirling, Scotland, United Kingdom
    Environ Toxicol Chem 21:1198-205. 2002
    ..Previous studies have indicated that Daphnia magna exposed to toxic substances can exhibit delayed recovery in feeding behavior (postexposure feeding ..
  20. ncbi Cryptic intercontinental colonization in water fleas Daphnia pulicaria inferred from phylogenetic analysis of mitochondrial DNA variation
    Silvia Markova
    Department of Ecology, Faculty of Science, Charles University, Prague 2, Czech Republic
    Mol Phylogenet Evol 44:42-52. 2007
    The water fleas of the Daphnia pulex complex play a key role in freshwater ecosystems throughout the northern hemisphere...
  21. ncbi Effects of particle composition and species on toxicity of metallic nanomaterials in aquatic organisms
    Robert J Griffitt
    Center for Environmental and Human Toxicology, University of Florida, Gainesville, Florida 32911, USA
    Environ Toxicol Chem 27:1972-8. 2008
    ..in all organisms tested, with 48-h median lethal concentrations as low as 40 and 60 microg/L, respectively, in Daphnia pulex adults, whereas titanium dioxide did not cause toxicity in any of the tests...
  22. ncbi Development of a base set of toxicity tests using ultrafine TiO2 particles as a component of nanoparticle risk management
    David B Warheit
    DuPont Haskell Laboratory for Health and Environmental Sciences, Newark, DE 19714 0050, USA
    Toxicol Lett 171:99-110. 2007
    ..uf-TiO(2) exhibited low concern for aquatic hazard in unaerated, 48h, static acute tests using the water flea, Daphnia magna; exhibited low concern for aquatic hazard in unaerated, 96h, static acute tests using the rainbow trout, ..
  23. ncbi Exploring embryonic germ line development in the water flea, Daphnia magna, by zinc-finger-containing VASA as a marker
    Kazunori Sagawa
    School of Life Science, Tokyo University of Pharmacy and Life Science, Hachioji, Japan
    Gene Expr Patterns 5:669-78. 2005
    ..on germ line development in crustaceans, we cloned VASA cDNAs from three branchiopod species: water fleas Daphnia magna and Moina macrocopa, and brine shrimp Artemia franciscana...
  24. ncbi The impact of human-made ecological changes on the genetic architecture of Daphnia species
    Nora Brede
    Department of Ecology and Evolution, Goethe University Frankfurt am Main, Siesmayerstrasse 70, D 60054 Frankfurt am Main, Germany
    Proc Natl Acad Sci U S A 106:4758-63. 2009
    ..We reconstructed the genetic architecture of a Daphnia species complex in 2 European lakes using diapausing eggs that were isolated from sediment layers covering the ..
  25. ncbi Inference of parasite local adaptation using two different fitness components
    D Refardt
    Unité Ecologie et Evolution, Departement de Biologie, Chemin du Musee 10, Fribourg, Switzerland
    J Evol Biol 20:921-9. 2007
    ..We assessed local adaptation of the microsporidium Ordospora colligata to its host, the crustacean Daphnia magna using two different parasite fitness components: infection persistence over several host generations in ..
  26. ncbi Analyzing effects of pesticides on invertebrate communities in streams
    Matthias Liess
    UFZ Centre for Environmental Research, Permoserstrasse 15, D 04318 Leipzig, Germany
    Environ Toxicol Chem 24:954-65. 2005
    ..showed that measured pesticide concentrations of 1:10 of the acute 48-h median lethal concentration (LC50) of Daphnia magna led to a short- and long-term reduction of abundance and number of SPEAR and a corresponding increase in ..
  27. ncbi Biotransformation and bioconcentration of pyrene in Daphnia magna
    Jarkko Akkanen
    Department of Biology, Laboratory of Aquatic Ecology and Ecotoxicology, University of Joensuu, P O Box 111, FIN 80101, Joensuu, Finland
    Aquat Toxicol 64:53-61. 2003
    Water fleas (Daphnia magna) were exposed to [14C]pyrene in the presence and absence of piperonyl butoxide (PBO), a general cytochrome P450 (CYP) inhibitor, in organic carbon-free artificial freshwater (AFW, DOC<0...
  28. ncbi Transgenerational effects of poor elemental food quality on Daphnia magna
    Paul C Frost
    Department of Biology, Trent University, Peterborough, ON K9J 7B8, Canada
    Oecologia 162:865-72. 2010
    ..We examined whether P limitation of the aquatic invertebrate, Daphnia magna, alters the responses of its offspring to inadequate P nutrition...
  29. ncbi The effects of multiple infections on the expression and evolution of virulence in a Daphnia-endoparasite system
    Frida Ben-Ami
    Zoologisches Institut, Evolutionsbiologie, Universitat Basel, Vesalgasse 1, CH 4051 Basel, Switzerland
    Evolution 62:1700-11. 2008
    ..we examined the outcome of mixed-isolate infections in individual hosts, using a single clone of the waterflea Daphnia magna and three isolates of its semelparous endoparasite Pasteuria ramosa...
  30. ncbi A comparison of nanoparticle and fine particle uptake by Daphnia magna
    Philipp Rosenkranz
    School of Life Sciences, Edinburgh Napier University, 10 Colinton Road, Edinburgh, EHIO 5DT Scotland, United Kingdom
    Environ Toxicol Chem 28:2142-9. 2009
    ..of a model nanoparticle, a 20-nm fluorescent carboxylated polystyrene bead, in the aquatic invertebrate Daphnia magna and compared it to a larger, 1,000-nm particle...
  31. ncbi Biological surface coating and molting inhibition as mechanisms of TiO2 nanoparticle toxicity in Daphnia magna
    André Dabrunz
    Institute for Environmental Sciences, University of Koblenz Landau, Landau, Germany
    PLoS ONE 6:e20112. 2011
    ..that suspensions of nanosized (∼100 nm initial mean diameter) titanium dioxide (nTiO(2)) led to toxicity in Daphnia magna at nominal concentrations of 3.8 (72-h EC(50)) and 0.73 mg/L (96-h EC(50))...
  32. ncbi Multi-metal interactions between Cd, Cu, Ni, Pb and Zn in water flea Daphnia magna, a stable isotope experiment
    I Komjarova
    Department of Biology, University of Antwerp, Groenenborgerlaan 171, B 2020 Antwerp, Belgium
    Aquat Toxicol 90:138-44. 2008
    Metal interaction effects were investigated in Daphnia magna during a simultaneous exposure to essential (Cu, Ni and Zn) and non-essential (Cd and Pb) metals at environmentally relevant concentrations using a stable isotope technique...
  33. ncbi Influence of stability on the acute toxicity of CdSe/ZnS nanocrystals to Daphnia magna
    Heather E Pace
    Department of Environmental Science and Engineering, Colorado School of Mines, 1500 Illinois Street, Golden, Colorado 80401, USA
    Environ Toxicol Chem 29:1338-44. 2010
    The acute toxicity of polymer-coated CdSe/ZnS quantum dots (QDs) to Daphnia magna was investigated using 48-h exposure studies. The principal objective was to relate the toxicity of QDs to specific physical and chemical aspects of the QD...
  34. ncbi Contribution of cyclic parthenogenesis and colonization history to population structure in Daphnia
    Anne Thielsch
    Department of Ecology and Evolution, Goethe University Frankfurt am Main, Siesmayerstrasse 70, Frankfurt am Main, Germany
    Mol Ecol 18:1616-28. 2009
    ..Members of the cladoceran genus Daphnia are widely distributed key organisms in freshwater habitats, which mostly exhibit this reproduction mode...
  35. ncbi Phototoxicity of CdSe/ZnSe quantum dots with surface coatings of 3-mercaptopropionic acid or tri-n-octylphosphine oxide/gum arabic in Daphnia magna under environmentally relevant UV-B light
    Jungkon Kim
    Department of Environmental Health, School of Public Health, Seoul National University, 28 Yunkeon, Chongro, Seoul 110 799, Republic of Korea
    Aquat Toxicol 97:116-24. 2010
    ..We performed an in vivo study employing Daphnia magna to evaluate the mechanism involved in toxicity of cadmium selenide/zinc selenide quantum dots (QDs) with ..
  36. ncbi Oxidative stress responses of Daphnia magna exposed to TiO(2) nanoparticles according to size fraction
    Ki Tae Kim
    Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology GIST, 261 Cheom dan Gwagi ro, Buk Gu, Gwangju 500 712, South Korea
    Sci Total Environ 408:2268-72. 2010
    ..The effect of particle size on oxidative stress against titanium dioxide nanoparticle (TiO(2) NP) exposure to Daphnia magna was investigated with both acute and chronic toxicity tests...
  37. ncbi Trophic transfer of TiO(2) nanoparticles from Daphnia to zebrafish in a simplified freshwater food chain
    Xiaoshan Zhu
    Department of Civil, Environmental, and Sustainable Engineering, Arizona State University, Tempe, AZ 85287, USA
    Chemosphere 79:928-33. 2010
    ..To address this concern, a simplified model of a freshwater food chain including a low trophic level organism (daphnia, Daphnia magna) and a high trophic level organism (zebrafish, Danio rerio) was established...
  38. ncbi Abortive meiosis in the oogenesis of parthenogenetic Daphnia pulex
    Chizue Hiruta
    Department of Natural History Sciences, Graduate School of Science, Hokkaido University, Kita 10 Nishi 8, Kita ku, Sapporo, Hokkaido 060 0810, Japan
    Chromosome Res 18:833-40. 2010
    ..was to precisely reveal the process and mechanism of parthenogenetic oogenesis and maintenance of diploidy in Daphnia pulex through histology, karyology, and immunohistochemistry...
  39. ncbi Development of an RNA interference method in the cladoceran crustacean Daphnia magna
    Yasuhiko Kato
    Okazaki Institute for Integrative Bioscience, Myodaiji, Aichi, Japan
    Dev Genes Evol 220:337-45. 2011
    ..a technique to inject exogenous materials into ovulated eggs and developed a dsRNA-based RNAi method for Daphnia magna...
  40. ncbi Effects of silver and cerium dioxide micro- and nano-sized particles on Daphnia magna
    Birgit K Gaiser
    Edinburgh Napier University, School of Health, Life and Social Sciences, Sighthill Campus, Sighthill Court, Edinburgh EH11 4BN, UK
    J Environ Monit 13:1227-35. 2011
    Acute (96 h) and chronic (21 d) exposures of Daphnia magna neonates were carried out with nano- and micro-sized Ag and CeO(2) particles to assess the influence of both material and size of particles on mortality and moulting...
  41. ncbi Genetic variation in a host-parasite association: potential for coevolution and frequency-dependent selection
    H J Carius
    Zoologisches Institut, Universitat Basel, Switzerland
    Evolution 55:1136-45. 2001
    ..We used the freshwater crustacean Daphnia magna and its bacterial microparasite Pasteuria ramosa to study genetic variation for host susceptibility and ..
  42. ncbi Ribosomal DNA evolution at the population level: nucleotide variation in intergenic spacer arrays of Daphnia pulex
    T J Crease
    Department of Zoology, University of Guelph, Ontario, Canada
    Genetics 141:1327-37. 1995
    Nucleotide variation was surveyed in 21 subrepeat arrays from the ribosomal DNA intergenic spacer of three Daphnia pulex populations. Eighteen of these arrays contained four subrepeats...
  43. ncbi LTR retroelements in the genome of Daphnia pulex
    Mina Rho
    School of Informatics and Computing, Indiana University, Bloomington, IN 47405, USA
    BMC Genomics 11:425. 2010
    ..Here, we present a genome-wide analysis of LTR retroelements in Daphnia pulex, a cyclical parthenogen and the first crustacean for which the whole genomic sequence is available...
  44. ncbi Gene up-regulation in response to predator kairomones in the water flea, Daphnia pulex
    Hitoshi Miyakawa
    Graduate School of Environmental Science, Hokkaido University, Sapporo, Hokkaido 060 0810, Japan
    BMC Dev Biol 10:45. 2010
    ..The genus Daphnia (Branchiopoda, Cladocera) provides a model experimental system for the study of the developmental mechanisms and ..
  45. ncbi Intracellular conversion of environmental nitrate and nitrite to nitric oxide with resulting developmental toxicity to the crustacean Daphnia magna
    Bethany R Hannas
    Department of Environmental and Molecular Toxicology, North Carolina State University, Raleigh, North Carolina, United States of America
    PLoS ONE 5:e12453. 2010
    ..We tested the hypothesis that NO(x) undergo intracellular conversion to the potent signaling molecule nitric oxide resulting in the disruption of endocrine-regulated processes...
  46. ncbi Mixtures of similarly acting compounds in Daphnia magna: from gene to metabolite and beyond
    Tine Vandenbrouck
    Department of Biology, Laboratory for Ecophysiology, Biochemistry and Toxicology, University of Antwerp, Groenenborgerlaan 171, Antwerp, Belgium
    Environ Int 36:254-68. 2010
    b>Daphnia are an important and widely studied model species in ecological and toxicological studies throughout the world and an official (OECD) recommended test organism...
  47. ncbi The genetic legacy of polyploid Bolivian Daphnia: the tropical Andes as a source for the North and South American D. pulicaria complex
    Joachim Mergeay
    Laboratory of Aquatic Ecology and Evolutionary Biology, Katholieke Universiteit Leuven, Charles Deberiotstraat 32, B 3000 Leuven, Belgium
    Mol Ecol 17:1789-800. 2008
    We investigated genetic variation in asexual polyploid members of the water flea Daphnia pulex complex from a set of 12 Bolivian high-altitude lakes...
  48. ncbi Meiosis genes in Daphnia pulex and the role of parthenogenesis in genome evolution
    Andrew M Schurko
    Roy J Carver Center for Comparative Genomics and Department of Biology, The University of Iowa, Iowa City, IA 52242, USA
    BMC Evol Biol 9:78. 2009
    ..However, little is understood about the molecular determinants of parthenogenesis. The Daphnia pulex genome must contain the molecular machinery for different reproductive modes: sexual (both male and female ..
  49. ncbi Sequence divergence and expression of a transformer gene in the branchiopod crustacean, Daphnia magna
    Yasuhiko Kato
    Okazaki Institute for Integrative Bioscience, National Institute for Basic Biology, National Institutes of Natural Sciences, and Department of Basic Biology, Faculty of Life Science, Graduate University for Advanced Studies, 5 1 Higashiyama, Myodaiji, Okazaki, Aichi 444 8787, Japan
    Genomics 95:160-5. 2010
    Environmental decline triggers a switch in reproductive strategy of Daphnia magna from asexual to sexual reproduction; however, the molecular basis of such environmental sex determination remains largely unknown...
  50. ncbi The infection rate of Daphnia magna by Pasteuria ramosa conforms with the mass-action principle
    R R Regoes
    Department of Biology, Emory University, 1510 Clifton Rd NE, Atlanta, GA 30322, USA
    Epidemiol Infect 131:957-66. 2003
    ..this paper, we examine the relationship between the infection rate and the parasite inoculum for the water flee Daphnia magna and its bacterial parasite Pasteuria ramosa...
  51. ncbi Long-term disease dynamics in lakes: causes and consequences of chytrid infections in Daphnia populations
    Pieter T J Johnson
    Ecology and Evolutionary Biology, Ramaley N122, Campus Box 334, University of Colorado, Boulder, Colorado 80309 0334, USA
    Ecology 90:132-44. 2009
    ..We examined the dynamics of Daphnia pulicaria, a keystone zooplankter in lake ecosystems, to explore the long-term causes and consequences of ..
  52. ncbi The first-generation Daphnia magna linkage map
    Jarkko Routtu
    Zoologisches Institut, Evolutionsbiologie, Universitat Basel, Vesalgasse 1, 4051 Basel, Switzerland
    BMC Genomics 11:508. 2010
    b>Daphnia magna is a well-established model species in ecotoxicology, ecology and evolution...
  53. ncbi Ecological genomics: steps towards unraveling the genetic basis of inducible defenses in Daphnia
    Ralph Tollrian
    Department of Animal Ecology, Evolution and Biodiversity, Ruhr University Bochum, Universitaetsstrasse 150, D 44801 Bochum, Germany
    BMC Biol 8:51. 2010
    Little is known about the genetic mechanisms underlying inducible defenses. Recently, the genome of Daphnia pulex, a model organism for defense studies, has been sequenced...
  54. ncbi Predator-induced defences in Daphnia pulex: selection and evaluation of internal reference genes for gene expression studies with real-time PCR
    Katina I Spanier
    Department of Animal Ecology, Ruhr University Bochum, D 44780 Bochum, Germany
    BMC Mol Biol 11:50. 2010
    The planktonic microcrustacean Daphnia pulex is among the best-studied animals in ecological, toxicological and evolutionary research. One aspect that has sustained interest in the study system is the ability of D...
  55. ncbi Maternal control of resting-egg production in Daphnia
    V Alekseev
    Present address Zoological Institute of the Russian Academy of Sciences, St Petersburg, 199034
    Nature 414:899-901. 2001
    ..Like seeds, resting stages can survive unfavourable conditions. The crustacean Daphnia normally reproduces by means of parthenogenetically produced normal, not resting, eggs-but occasionally switches ..
  56. ncbi Effects of cell-bound microcystins on survival and feeding of Daphnia spp
    T Rohrlack
    Freshwater Biological Laboratory, University of Copenhagen, DK 3400 Hillerød, Denmark
    Appl Environ Microbiol 67:3523-9. 2001
    The influence of cell-bound microcystins on the survival time and feeding rates of six Daphnia clones belonging to five common species was studied...
  57. ncbi Allochronic differentiation among Daphnia species, hybrids and backcrosses: the importance of sexual reproduction for population dynamics and genetic architecture
    T Jankowski
    Limnological Institute, University of Konstanz, Konstanz, Germany
    J Evol Biol 17:312-21. 2004
    Seasonal dynamics of the abundance, sexual reproduction and genetic architecture in a Daphnia hyalina-galeata hybrid complex were studied in the large and deep Lake Constance...
  58. ncbi Chronic toxicity and responses of several important enzymes in Daphnia magna on exposure to sublethal microcystin-LR
    Wei Chen
    State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430072, People's Republic of China
    Environ Toxicol 20:323-30. 2005
    In the current study, the toxicological mechanisms of microcystin-LR and its disadvantageous effects on Daphnia magna were examined...
  59. ncbi In vivo biomodification of lipid-coated carbon nanotubes by Daphnia magna
    Aaron P Roberts
    Department of Biological Sciences, University of North Texas, Denton, Texas 76203, USA
    Environ Sci Technol 41:3025-9. 2007
    This study examined the interactions between Daphnia magna and a water-soluble, lysophophatidylcholine coated single-walled carbon nanotube. D...
  60. ncbi Gene response profiles for Daphnia pulex exposed to the environmental stressor cadmium reveals novel crustacean metallothioneins
    Joseph R Shaw
    Department of Biology, Dartmouth College, Hanover, New Hampshire 03755, USA
    BMC Genomics 8:477. 2007
    ..A first generation cDNA microarray was developed for the environmental indicator species Daphnia pulex, to identify genes whose regulation is modulated following exposure to the metal stressor cadmium...
  61. ncbi Nucleotide polymorphism and within-gene recombination in Daphnia magna and D. pulex, two cyclical parthenogens
    Christoph R Haag
    University of Edinburgh, Institute of Evolutionary Biology, Edinburgh, UK
    Genetics 182:313-23. 2009
    ..nucleotide diversity at eight nuclear loci in continentwide samples of two species of cyclically parthenogenetic Daphnia to assess the effect of partial asexual reproduction on effective population size and amount of recombination...
  62. ncbi Evidence for strong host clone-parasite species interactions in the Daphnia microparasite system
    Ellen Decaestecker
    Laboratory of Aquatic Ecology, Catholic University of Leuven, Ch De Beriotstraat 32, 3000 Leuven, Belgium
    Evolution 57:784-92. 2003
    ..In an experimental study, we confronted 19 clones from one Daphnia magna population with two bacterial and three microsporidian parasite species...
  63. ncbi In deep trouble: habitat selection constrained by multiple enemies in zooplankton
    Ellen Decaestecker
    Laboratory of Aquatic Ecology, Catholic University of Leuven, Charles De Beriotstraat 32, 3000 Leuven, Belgium
    Proc Natl Acad Sci U S A 99:5481-5. 2002
    ..predator and parasite avoidance may be important in the evolution of habitat selection behavior in the waterflea, Daphnia magna...
  64. ncbi The influence of pool volume and summer desiccation on the production of the resting and dispersal stage in a Daphnia metapopulation
    Florian Altermatt
    Zoologisches Institut, Universitat Basel, Vesalgasse 1, 4051 Basel, Switzerland
    Oecologia 157:441-52. 2008
    ..has strong implications on evolutionary and ecological dynamics and has led to two different hypotheses about the Daphnia metapopulation studied here: the assessment by some authors is that sub-populations contribute equally to the ..
  65. ncbi Unusual duplication of the insulin-like receptor in the crustacean Daphnia pulex
    Philippe Boucher
    Universite du Quebec a Rimouski, Departement de Biologie, Centre d Etudes Nordiques, 300 Allee des Ursulines, Rimouski, Quebec, G5L 4L8 Canada
    BMC Evol Biol 10:305. 2010
    ..This study is the first detailed genomic study of this pathway in a crustacean species, Daphnia pulex.
  66. ncbi Isolation and absolute configuration determination of aliphatic sulfates as the Daphnia kairomones inducing morphological defense of a phytoplankton
    Ko Yasumoto
    Graduate School of Pharmaceutical Sciences, Tokushima University, Japan
    Chem Pharm Bull (Tokyo) 54:271-4. 2006
    2,6-Dimethylheptyl sulfate (1) and 6-methyloctyl sulfate (3) were isolated from Daphnia pulex as the Daphnia kairomones that induced morphological defense of a freshwater phytoplankton Scenedesmus gutwinskii var. heterospina (NIES-802)...
  67. ncbi Selective predation and productivity jointly drive complex behavior in host-parasite systems
    Spencer R Hall
    School of Integrative Biology, University of Illinois at Urbana Champaign, Urbana, Illinois 61801, USA
    Am Nat 165:70-81. 2005
    ..Thus, synergy between two enemies can end disastrously for the host. Such diverse outcomes underscore the crucial importance of the community and ecosystem context in which host-parasite interactions occur...
  68. ncbi Molecular characterization of ribosomal intergenic spacer in the tadpole shrimp Triops cancriformis (Crustacea, Branchiopoda, Notostraca)
    Andrea Luchetti
    Dipartimento di Biologia Evoluzionistica Sperimentale, Bologna, Italy
    Genome 49:888-93. 2006
    ..The putative external transcribed spacer (840 bp) shows hairpin structures, as in yeasts, protozoans, Drosophila, and vertebrates...
  69. ncbi Multi-generational effects of four selected environmental oestrogens on Daphnia magna
    Sarah J Brennan
    Endocrine Disruption Group, School of Science, Athlone Institute of Technology, Athlone, Co. Westmeath, Ireland
    Chemosphere 64:49-55. 2006
    ..E2), diethylstilbestrol (DES), bisphenol A (BPA) and 4-nonylphenol (4-NP) on the freshwater invertebrate Daphnia magna were assessed over first and second generations...
  70. ncbi Isolation and absolute configuration determination of aliphatic sulfates as the Daphnia kairomones inducing morphological defense of a phytoplankton-part 2
    Ko Yasumoto
    Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
    Chem Pharm Bull (Tokyo) 56:129-32. 2008
    4,8-Dimethylnonyl sulfate (1) and 3-methyl-4E-decenyl sulfate (2) were isolated from Daphnia pulex as the Daphnia kairomones that induced morphological defense of a freshwater phytoplankton Scenedesmus gutwinskii var...
  71. ncbi Acute toxicity of organic chemicals to Gammarus pulex correlates with sensitivity of Daphnia magna across most modes of action
    Roman Ashauer
    Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dubendorf, Switzerland
    Aquat Toxicol 103:38-45. 2011
    ..Gammarus pulex towards organic xenobiotic compounds in comparison to the sensitivity of the crustacean cladoceran Daphnia magna...
  72. ncbi A quantitative test of the relationship between parasite dose and infection probability across different host-parasite combinations
    Frida Ben-Ami
    Zoologisches Institut, Evolutionsbiologie, Universitat Basel, Vesalgasse 1, 4051 Basel, Switzerland
    Proc Biol Sci 275:853-9. 2008
    ..the dose level of the bacterial endoparasite Pasteuria ramosa on the infection rate of its host, the water flea Daphnia magna...
  73. ncbi Extinction, recolonization, and dispersal through time in a planktonic crustacean
    Joachim Mergeay
    Laboratory of Aquatic Ecology, P O Box 02439, Katholieke Universiteit Leuven, Charles Deberiotstraat 32, 3000 Leuven, Belgium
    Ecology 88:3032-43. 2007
    ..lake sediment core in Kenya, we traced the genetic composition of a local population of the planktonic crustacean Daphnia barbata through a sequence of extinction and recolonization events...
  74. ncbi Stochastic resonance and the evolution of Daphnia foraging strategy
    Nathan D Dees
    Center for Neurodynamics, Department of Physics and Astronomy, University of Missouri at St Louis, St Louis, MO 63121, USA
    Phys Biol 5:044001. 2008
    ..Here, we investigate the role of noise in optimizing search strategies. We focus on the zooplankton Daphnia, which move in successive sequences consisting of a hop, a pause and a turn through an angle...
  75. ncbi Toxicity of ivermectin on cladocerans: comparison of toxic effects on Daphnia and Ceriodaphnia species
    Christelle Lopes
    Universite de Lyon, F 69000, Lyon, France
    Environ Toxicol Chem 28:2160-6. 2009
    ..this, we compared the effects of ivermectin on the survival, growth, and reproduction of two cladoceran species (Daphnia magna and Ceriodaphnia dubia) and two strains of D. magna (one Japanese and one European)...
  76. ncbi Effect of pulse frequency and interval on the toxicity of chlorpyrifos to Daphnia magna
    R B Naddy
    Department of Environmental Toxicology and Clemson Institute of Environmental Toxicology, Clemson University, Pendleton, SC 29670, USA
    Chemosphere 45:497-506. 2001
    ..Studies were conducted with 7-day old Daphnia magna for 7 days to evaluate the effect of pulse frequency and interval among multiple CPF exposures...
  77. ncbi Responses of a bacterial pathogen to phosphorus limitation of its aquatic invertebrate host
    Paul C Frost
    Department of Biology, Trent University, Peterborough, Ontario K9J7B8 Canada
    Ecology 89:313-8. 2008
    ..bacterial microparasite Pasteuria ramosa is affected by the elemental nutrition of its aquatic invertebrate host, Daphnia magna...
  78. ncbi Evolutionary history of D-lactate dehydrogenases: a phylogenomic perspective on functional diversity in the FAD binding oxidoreductase/transferase type 4 family
    Melania E Cristescu
    University of Windsor, Great Lakes Institute for Environmental Research, Windsor, Ontario N9B 3P4, Canada
    J Mol Evol 69:276-87. 2009
    ..The present study demonstrates that structural phylogenomic approach can be used to resolve important evolutionary events in functionally diverse superfamilies and to provide reliable functional predictions to poorly characterized genes...
  79. ncbi Land use, genetic diversity and toxicant tolerance in natural populations of Daphnia magna
    Anja Coors
    Laboratory of Aquatic Ecology and Evolutionary Biology, Katholieke Universiteit Leuven, Ch De Beriotstraat 32, 3000 Leuven, Belgium
    Aquat Toxicol 95:71-9. 2009
    ..Using populations of Daphnia magna established from the dormant egg banks of ponds located in a landscape dominated by anthropogenic impact, ..
  80. ncbi Sensitivity of Daphnia species to phosphorus-deficient diets
    Bernd Seidendorf
    Department of Ecology and Evolution, Institute for Ecology, Evolution and Diversity, Goethe University Frankfurt am Main, Siesmayerstrasse 70, 60054, Frankfurt am Main, Germany
    Oecologia 162:349-57. 2010
    The life history of freshwater cladocerans such as Daphnia spp. is strongly affected by their environment...
  81. ncbi Acute and chronic effects of nano- and non-nano-scale TiO(2) and ZnO particles on mobility and reproduction of the freshwater invertebrate Daphnia magna
    Karin Wiench
    BASF, Product Safety Regulations, Toxicology and Ecology, GUP CB Z470, Ludwigshafen, Germany
    Chemosphere 76:1356-65. 2009
    ..Therefore, the potential effects of nano-scale and non-nano-scale TiO(2) and ZnO on the water flea, Daphnia magna, were examined in 48-h acute toxicity tests using three different test media, several pigment formulations--..
  82. ncbi Annotation, phylogenetics, and expression of the nuclear receptors in Daphnia pulex
    Susanne A Thomson
    Department of Environmental and Molecular Toxicology, North Carolina State University, Raleigh, North Carolina, USA
    BMC Genomics 10:500. 2009
    ..The aim of this study was to identify putative nuclear receptors from the first assembled genome of a crustacean Daphnia pulex http://wFleaBase.org...
  83. ncbi Quantification of water solubilized CdSe/ZnS quantum dots in Daphnia magna
    Nastassja A Lewinski
    Department of Bioengineering, Rice University, Houston, Texas, USA
    Environ Sci Technol 44:1841-6. 2010
    The relative transparency of Daphnia magna (daphnia) and the unique optical properties of quantum dots (QDs) were paired to study the accumulation potential and surface coating effects on uptake of amphiphilic polymer coated CdSe/ZnS QDs...
  84. ncbi Turning inducible defenses on and off: adaptive responses of Daphnia to a gape-limited predator
    Howard P Riessen
    Department of Biology, SUNY College at Buffalo, 1300 Elmwood Avenue, Buffalo, New York 14222, USA
    Ecology 90:3455-69. 2009
    ..examine this model with respect to a model system of inducible defenses: neck spine induction in the water flea Daphnia in response to predatory larvae of the phantom midge Chaoborus...
  85. ncbi Effects of glyphosate and methidathion on the expression of the Dhb, Vtg, Arnt, CYP4 and CYP314 in Daphnia magna
    Thai Hoang Le
    Department of Bioprocess Engineering, Chonbuk National University, 664 14 Duckjin dong, Jeonju 561 756, South Korea
    Chemosphere 79:67-71. 2010
    ..genes was quantified and analyzed using a semi-quantitative RT-PCR to study the changes in their expression in Daphnia magna after exposure to known pesticides, glyphosate and methidathion...
  86. ncbi Pesticide exposure and inducible antipredator responses in the zooplankton grazer, Daphnia magna Straus
    João L T Pestana
    CESAM and Department of Biology, University of Aveiro, Campus Universitario de Santiago, 3810 193 Aveiro, Portugal
    Chemosphere 78:241-8. 2010
    ..Here, we study the effects of the pesticide imidacloprid on the responses of Daphnia magna to a combination of predator-release kairomones from trout and alarm cues from conspecifics, simulating ..
  87. ncbi Responses of alkaline phosphatase activity to phosphorus stress in Daphnia magna
    S D S McCarthy
    Department of Biology, Trent University, Peterborough, ON, Canada K9J 7B8
    J Exp Biol 213:256-61. 2010
    ..examined how alkaline phosphatase (AP) activity within the bodies and in the materials released by the crustacean Daphnia magna responds to variable algal food phosphorus (P)-content...
  88. ncbi Behavioural response of the cladoceran Daphnia magna STRAUS to sublethal Copper stress--validation by image analysis
    Hubert Untersteiner
    Institute of Zoology, University of Graz, Universitatsplatz 2, 8010 Graz, Austria
    Aquat Toxicol 65:435-42. 2003
    In this study changes in the locomotory behaviour of the freshwater cladoceran Daphnia magna STRAUS were used as sublethal indicators of toxic copper (Cu) stress...
  89. ncbi Quantification of differentially expressed genes in Daphnia magna exposed to rubber wastewater
    Hun Je Jo
    Division of Environmental Science and Ecological Engineering, Korea University, Anam Dong, Sungbuk Gu, Seoul 136 713, Republic of Korea
    Chemosphere 73:261-6. 2008
    In this study, differentially expressed genes (DEGs) were investigated in Daphnia magna exposed to rubber wastewater using an annealing control primer (ACP)-based polymerase chain reaction (PCR) and real-time PCR...
  90. ncbi Acclimatory responses of the Daphnia pulex proteome to environmental changes. II. Chronic exposure to different temperatures (10 and 20 degrees C) mainly affects protein metabolism
    Susanne Schwerin
    Institute of Zoophysiology, University of Munster, Munster, Germany
    BMC Physiol 9:8. 2009
    ..By using 2D gel electrophoresis and mass spectrometry, the present study identified the major elements of the temperature-induced subset of the proteome from differently acclimated Daphnia pulex.
  91. ncbi Daphnia need to be gut-cleared too: the effect of exposure to and ingestion of metal-contaminated sediment on the gut-clearance patterns of D. magna
    P L Gillis
    Department of Biology, McMaster University, 1280 Main Street West, Hamilton, Ont, Canada L8S 4K1
    Aquat Toxicol 71:143-54. 2005
    The presence of sediment particles in the gut indicated that Daphnia magna used in whole-sediment bioassays ingest sediment...
  92. ncbi Effects of environmental contaminants on hemoglobin gene expression in Daphnia magna: a potential biomarker for freshwater quality monitoring
    Mi Hee Ha
    Environmental Engineering, University of Seoul, Seoul 130 743, Korea
    Arch Environ Contam Toxicol 57:330-7. 2009
    b>Daphnia hemoglobin (Hb) is one of the widely investigated invertebrate respiratory pigment. In this study, alteration of Daphnia magna Hb was evaluated in terms of its gene expression, using four D...
  93. ncbi Genome-wide analysis of tandem repeats in Daphnia pulex--a comparative approach
    Christoph Mayer
    Department of Animal Ecology, Evolution and Biodiversity, Ruhr University Bochum, Bochum, Germany
    BMC Genomics 11:277. 2010
    ..In this study we analysed the TR characteristics in the genomes of Daphnia pulex and 11 other eukaryotic species...
  94. ncbi Dispersion and toxicity of selected manufactured nanomaterials in natural river water samples: effects of water chemical composition
    Jie Gao
    Department of Environmental Engineering Sciences, P O Box 116450, University of Florida Gainesville, Florida 32611, USA
    Environ Sci Technol 43:3322-8. 2009
    ....
  95. ncbi Evolution of repeated sequences in the ribosomal DNA intergenic spacer of 32 arthropod species
    Cheryl D Ambrose
    Department of Integrative Biology, University of Guelph, ON, Canada
    J Mol Evol 70:247-59. 2010
    ..Taken together, these data suggest that both drift and natural selection influence repeat evolution within the IGS...
  96. ncbi Ecological differentiation between coexisting sexual and asexual strains of Daphnia pulex
    Mikko P Lehto
    Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland
    J Anim Ecol 79:1241-50. 2010
    ..ecological differentiation between asexual (obligate parthenogenetic) and sexual (cyclical parthenogenetic) Daphnia pulex in Southern Finland, where the two forms ('reproduction types') coexist regionally in a metapopulation...
  97. ncbi Aquatic ecotoxicity of a pheromonal antagonist in Daphnia magna and Desmodesmus subspicatus
    Esmeralda Rosa
    Department of Biological Organic Chemistry, IIQAB (CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain
    Aquat Toxicol 79:296-303. 2006
    ..Acute and sublethal toxicity tests of both compounds against the cladoceran Daphnia magna and the chlorophyte Desmodesmus subspicatus were conducted, the endpoints being immobilisation and feeding ..
  98. ncbi Toxicity and quantitative structure-activity relationships of nitriles based on Pseudokirchneriella subcapitata
    Chun Pin Huang
    Institute of Environmental Engineering, National Chiao Tung University, 75 Po Ai Street, Hsinchu, Taiwan 300, Taiwan
    Ecotoxicol Environ Saf 67:439-46. 2007
    ..subcapitata> Tetrahymena Pyriformis>Daphnia magna>luminescent bacteria (Microtox). The alga, P...
  99. ncbi Toxicity of fenamiphos and its metabolites to the cladoceran Daphnia carinata: the influence of microbial degradation in natural waters
    Tanya Cáceres
    Centre for Environmental Risk Assessment and Remediation CERAR, University of South Australia, Mawson Lakes Boulevard SA 5095, Australia
    Chemosphere 66:1264-9. 2007
    ..sulfone, fenamiphos phenol, fenamiphos sulfoxide phenol and fenamiphos sulfone phenol, to a cladoceran, Daphnia carinata was studied in both cladoceran culture medium and natural water collected from a local river...
  100. ncbi Interspecies correlation estimates predict protective environmental concentrations
    Scott D Dyer
    The Procter and Gamble Company, 11810 East Miami River Road, Cincinnati, Ohio 45253 8707, USA
    Environ Sci Technol 40:3102-11. 2006
    ..values for three surrogate species Pimephales promelas (Fathead minnow), Onchorynchus mykiss (Rainbow trout), and Daphnia magna (water flea)...
  101. ncbi Influences of macroalga-derived dissolved organic carbon on the aquatic toxicity of copper and cadmium
    Martin T K Tsui
    Croucher Institute for Environmental Sciences and Department of Biology, Hong Kong Baptist University, 224 Waterloo Road, Kowloon Tong, Kowloon, Hong Kong SAR, PR China
    Chemosphere 65:1831-5. 2006
    ..from macroalga (Sargassum) on the acute toxicity of copper (Cu) and cadmium (Cd) to a freshwater cladoceran (Daphnia magna) was investigated...

Research Grants62

  1. Effects of environmental contamination on gene copy number variation: Molecular b
    Joseph Shaw; Fiscal Year: 2010
    ..Accordingly, our proposal employs studies using the recently added and ideal NIH model organism, Daphnia, to test the central hypothesis that exposure to environmental contaminants increase the rate of mutations giving ..
  2. Daphnia DNA Microarrays
    Owen Hughes; Fiscal Year: 2002
    ..Specifically, in this Phase I work we will construct a pilot array for Daphnia pulex...
  3. Daphnia Functional Genomics Resource
    MICHAEL PFRENDER; Fiscal Year: 2007
    ..b>Daphnia is a logical candidate study system for further development to fill this gap...
  4. MASS SPECTRAL SEQUENCING OF CARBOHYDRATES
    Vernon Reinhold; Fiscal Year: 2007
    ..To tackle this research area we introduce a new and more appropriate animal model Daphnia. We discuss the many reasons this simple microcrustacean is appropriate for the tasks ahead and supply ..
  5. MASS SPECTRAL SEQUENCING OF CARBOHYDRATES
    Vernon Reinhold; Fiscal Year: 2009
    ..To tackle this research area we introduce a new and more appropriate animal model Daphnia. We discuss the many reasons this simple microcrustacean is appropriate for the tasks ahead and supply ..
  6. Fathead minnow DNA microarrays
    Owen Hughes; Fiscal Year: 2002
    ..If this work proves feasibility, Phase II will involve developing a reasonably comprehensive Pimephales array as well as beginning arrays for Daphnia, duckweed, and green algae.
  7. Induction of breast cancer in MMTVneu mice
    William Baldwin; Fiscal Year: 2002
    ..Overall, the purpose of this study is to examine 4-nonylphenol's effects on breast cancer growth and its mechanism of action on the mammary tumor. ..
  8. Genomic search for bone mass QTLs
    Hong Wen Deng; Fiscal Year: 2010
    ..This knowledge is essential for the development of preventive interventions and/or cures for osteoporosis that may be based on individuals'specific genotypes. ..
  9. The Rate and Molecular Spectrum of Spontaneous Mutations
    Michael Lynch; Fiscal Year: 2009
    ..four model systems: the yeast Saccharomyces cerevisiae, the nematode Caenorhabditis elegans, the microcrustacean Daphnia pulex, and the ciliate Paramecium tetraurelia...
  10. NEURAL CONTROL OF SENSORY ACQUISITION
    Mark Nelson; Fiscal Year: 2000
    ..This research is intended to lead to a better understanding of general principles of sensory acquisition that enable animals, including humans, to efficiently obtain and process information about their environment. ..
  11. Genomic search for bone mass QTLs
    Hong Wen Deng; Fiscal Year: 2009
    ..This knowledge is essential for the development of preventive interventions and/or cures for osteoporosis that may be based on individuals' specific genotypes. ..
  12. The Rate and Molecular Spectrum of Spontaneous Mutations
    Michael Lynch; Fiscal Year: 2007
    ..four model systems: the yeast Saccharomyces cerevisiae, the nematode Caenorhabditis elegans, the microcrustacean Daphnia pulex, and the ciliate Paramecium tetraurelia...
  13. Characterization and genetic analysis of aging in Daphnia
    Jeffry L Dudycha; Fiscal Year: 2010
    This project will develop the microcrustacean Daphnia as a model system for the biology of aging...
  14. ROBUST AND POWERFUL TEST OF CANDIDATE GENES TO BONE MASS
    Hong Wen Deng; Fiscal Year: 2010
    ....
  15. Identification of Proteins Important for Male Osteoporosis
    Hong Wen Deng; Fiscal Year: 2010
    ..This project aims to identify proteins that are important to male osteoporosis. The findings will provide essential scientific basis for effective prevention, diagnosis and treatment of the disease. ..
  16. The Rate and Molecular Spectrum of Spontaneous Mutations
    Michael Lynch; Fiscal Year: 2009
    ..four model systems: the yeast Saccharomyces cerevisiae, the nematode Caenorhabditis elegans, the microcrustacean Daphnia pulex, and the ciliate Paramecium tetraurelia...
  17. Identification of Proteins Important for Male Osteoporosis
    Hong Wen Deng; Fiscal Year: 2009
    ..This project aims to identify proteins that are important to male osteoporosis. The findings will provide essential scientific basis for effective prevention, diagnosis and treatment of the disease. ..
  18. NEURAL CONTROL OF SENSORY ACQUISITION
    Mark Nelson; Fiscal Year: 2004
    ..The modeling framework is used to quantitatively evaluate the contributions of afferent convergence and spatiotemporal filtering in the ELL maps to the enhancement of the signal and the suppression of the background. ..
  19. Directory and Information System components for genomes
    Donald Gilbert; Fiscal Year: 2003
    ..Such a module for automated, common-standard use of organism genome data is an important step toward a grid of data useable for the large-scale analyses desired bioscientists. ..
  20. Genetic Basis of Osteoporotic Fractures and Bone Mass
    Hong Wen Deng; Fiscal Year: 2005
    ..There are only a few remaining minor concerns. Five years of support are recommended with an outstanding level of enthusiasm. ..
  21. CHARACTERIZATION OF DELETERIOUS GENOMIC MUTATIONS
    Hong Wen Deng; Fiscal Year: 2005
    ..abstract_text> ..
  22. Proteomics Study of Peripheral Blood Monocytes on Osteoporosis
    Hong Wen Deng; Fiscal Year: 2007
    ....
  23. ROBUST AND POWERFUL TEST OF CANDIDATE GENES TO BONE MASS
    Hong Wen Deng; Fiscal Year: 2007
    ..Our proposed study is comprehensive and our statistical genetic analyses show that our study is of very high power and may identify a quantitative trait locus (QTL) with a heritability (h2) as low as 0.05 with a power of > 90%. ..
  24. Genomic search for bone mass QTLs
    Hong Wen Deng; Fiscal Year: 2007
    ..This knowledge is essential for the development of preventive interventions and/or cures for osteoporosis that may be based on individuals' specific genotypes. ..