Shifts in survival and reproduction after chronic warming enhance the potential of a marine copepod to persist under extreme heat events.

ABSTRACT: The study of a species' thermal tolerance and vital rates responses provides useful metrics to characterize its vulnerability to ocean warming. Under prolonged thermal stress, plastic and adaptive processes can adjust the physiology of organisms. Yet it is uncertain whether the species can expand their upper thermal limits to cope with rapid and extreme changes in environmental temperature. In this study, we reared the marine copepod Paracartia grani at control (19°C) and warmer conditions (25°C) for >18 generations and assessed their survival and fecundity under short-term exposure to a range of temperatures (11-34°C). After multigenerational warming, the upper tolerance to acute exposure (24 h) increased by 1-1.3°C, although this enhancement decreased to 0.3-0.8°C after longer the

SUBMITTER: de Juan C 

PROVIDER: S-EPMC10539201 | biostudies-literature | 2023 Sep-Oct

REPOSITORIES: biostudies-literature