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Vesmír č. 10
Vesmír č. 10
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2. 10. 2017
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Modelka Daphnia

Water fleas Daphnia as model organisms in biology by Adam Petrusek.

The cladoceran genus Daphnia has been an important study organism in ecology and evolutionary biology for many decades, and recently became officially recognized as a model in biomedical research. It is the first crustacean with fully sequenced genome, and probably best known aquatic invertebrate. The key advantages of daphnids for experimental work is their cyclical parthenogenetic life cycle, easy handling and fast reproduction. In the text, I describe the cyclical parthenogenesis of cladocerans and some interesting deviations of the life cycle found within this genus. Additionally, I discuss various antipredator strategies of Daphnia, in particular phenotypic plasticity of morphological defence structures.