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Updated: May 28, 2025

Resurrection of Dormant Daphnia magna: Protocol and Applications
Published on: January 19, 2018
Environmentally Dependent Alteration of Reproductive Strategies and Juvenile Hormone Signaling in Daphnia (Crustacea:
1Center for Bioscience Research and Education, Utsunomiya University, Utsunomiya, Tochigi 321-8505, Japan, h-miya@cc.utsunomiya-u.ac.jp.
Abstract:
Daphnia switches between asexual and sexual reproductive strategies, depending on environmental conditions. For sexual reproduction, unfavorable environmental signals induce production of males and formation of meiotic eggs. Induction of both these phenotypes is strongly dependent upon the arthropod endocrine factor juvenile hormone (JH). This review presents the current state of research on regulatory mechanisms of reproductive strategy alteration in Daphnia, focusing on studies related to JH signaling conducted during the past several decades. Additionally, it discusses what is needed in future research to fully understand these mechanisms and evolution of complicated life cycle and environmental adaptation systems in Daphnia.

