Multigenerational exposure to increased temperature reduces metabolic rate but increases boldness in Gambusia affinis.

ABSTRACT: Acute exposure to warming temperatures increases minimum energetic requirements in ectotherms. However, over and within multiple generations, increased temperatures may cause plastic and evolved changes that modify the temperature sensitivity of energy demand and alter individual behaviors. Here, we aimed to test whether populations recently exposed to geothermally elevated temperatures express an altered temperature sensitivity of metabolism and behavior. We expected that long-term exposure to warming would moderate metabolic rate, reducing the temperature sensitivity of metabolism, with concomitant reductions in boldness and activity. We compared the temperature sensitivity of metabolic rate (acclimation at 20 vs. 30°C) and allometric slopes of routine, standard, and maximum metabolic ra

SUBMITTER: Moffett ER 

PROVIDER: S-EPMC9019145 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature