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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. In insects most closely related to branchiopod crustaceans, orthologs of the Drosophila transformer gene such as dipteran transformer (tra), honeybee feminizer (fem) and complementary sex...
The water flea Daphnia magna reproduces primarily by cyclic parthenogenesis. Environmental stimuli that signal a change to adverse conditions induce the organisms to switch from parthenogenesis to gamogenetic reproduction. During the gamogenetic period, they produce male daphnids and dormant resting eggs, which can survive prolonged periods of environmental adversity. However, little is known about...
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