2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/24/2021 | 2:00 PM - 3:30 PM | METABOLIC RATES AND BEHAVIOR OF A WIDELY DISTRIBUTED CRAYFISH SHIFT ALONG A LATITUDINAL GRADIENT | Virtual Platform
METABOLIC RATES AND BEHAVIOR OF A WIDELY DISTRIBUTED CRAYFISH SHIFT ALONG A LATITUDINAL GRADIENT
Freshwater species are exposed to novel thermal regimes due to climate change and biological invasions. Temperature can alter the metabolic rates of ectotherms, which can affect their energy requirements, behavior, and ecological impacts. We used a widely distributed crayfish, the virile crayfish (Faxonius virilis), to examine the relationship between climate and crayfish metabolic rates and activity levels. We hypothesized that crayfish from high latitudes would have higher routine metabolic rates and activity levels as an adaptation to promote food acquisition during the short growing season. We collected virile crayfish from eight populations along a latitudinal gradient and used intermittent respirometry to measure crayfish routine metabolic rates in common conditions. In support of our hypothesis, there was a significant positive relationship between home latitude and crayfish metabolic rates, but this only occurred at night when crayfish are more active. Further, crayfish from higher latitudes had higher activity levels in behavioral experiments. These data suggest that the behavioral traits within this species shift as a response to the local thermal regime. Thus, future changes in the climate may result in changes in behavioral traits and associated metabolic rates.
- Stream
- Climate change
- Species interactions
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Presenters/Authors
Lindsey Reisinger
(), University of Florida, lreisinger1@ufl.edu;
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Nicole Tripp
(), University of Florida, tripp17@ufl.edu;
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Jim Stoeckel
(), Auburn University, jas0018@auburn.edu;
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