When males outlive females: Sex-specific effects of temperature on lifespan in a cyclic parthenogen.

ABSTRACT: Lifespans of males and females frequently differ as a consequence of different life history strategies adopted to maximize fitness. It is well visible in cyclic parthenogens, such as water fleas of the genus Daphnia, where males appear in the population usually only for periods when receptive females are available. Moreover, even within one sex, different life history strategies and mechanisms regulating lifespan may exist. Previous studies suggested that Daphnia males may regulate their lifespan by staying in colder waters than females. We hypothesize that such behavioral mechanism should be associated with stronger reaction to low temperature-that is greater lifespan extension in males than in females. In this study, we monitored survivorship of Daphnia magna females

SUBMITTER: Pietrzak B 

PROVIDER: S-EPMC6202703 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature