نتایج جستجو برای: daphnia pulex
تعداد نتایج: 3578 فیلتر نتایج به سال:
Understanding the genetic and evolutionary basis of animal morphological diversity will require comparative developmental studies that use new model organisms. This necessitates development of tools for the study of genetics and also the generation of sequence information of the organism to be studied. The development of next generation sequencing technology has enabled quick and cost effective...
A key challenge for ecological and ecotoxicological risk assessment is to predict the of organisms when exposed simultaneously multiple stressors in sub-lethal concentrations. Here, we assessed whether concentrations an anthropogenic stressors, heavy metal copper (Cu), mediates impacts a natural threat species, predation risk, among six distinct Daphnia pulex clones. We investigated interaction...
Substantial genetic differentiation is frequently observed among populations of cyclically parthenogenetic zooplankton despite their high dispersal capabilities and potential for gene flow. Local adaptation has been invoked to explain population genetic differentiation despite high dispersal, but several neutral models that account for basic life history features also predict high genetic diffe...
As one of the few known species in an active phase of intron proliferation, the microcrustacean Daphnia pulex is an especially attractive system for interrogating the gain and loss of introns in natural populations. In this study, we used a comparative population-genomic approach to identify and characterize 90 recently gained introns in this species. Molecular clock analyses indicate that thes...
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