Phenotypic and transcriptional response of Daphnia pulicaria to the combined effects of temperature and predation.

ABSTRACT: Daphnia, an ecologically important zooplankton species in lakes, shows both genetic adaptation and phenotypic plasticity in response to temperature and fish predation, but little is known about the molecular basis of these responses and their potential interactions. We performed a factorial experiment exposing laboratory-propagated Daphnia pulicaria clones from two lakes in the Sierra Nevada mountains of California to normal or high temperature (15°C or 25°C) in the presence or absence of fish kairomones, then measured changes in life history and gene expression. Exposure to kairomones increased upper thermal tolerance limits for physiological activity in both clones. Cloned individuals matured at a younger age in response to higher temperature and kairomones, while size at maturity, fecun

SUBMITTER: Oliver A 

PROVIDER: S-EPMC9282536 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature