bioRxivJClub
Temperature-dependent performance scales with maximum heat tolerance across ectotherms
bioRxiv · · Preprint · Open access
Cicchino, Collier + 7 more
Abstract ↗AI summary
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Across more than 100 ectotherm species, critical thermal maximum (CTmax) scales about 1:1 with both thermal optimum (Topt) and the upper limit of performance (TPCmax), with TPCmax rising more steeply than Topt.
- Why it matters: It remains unclear whether sublethal warm-end performance and acute heat tolerance vary independently or form a coordinated thermal phenotype, which affects how thermal limits are interpreted.
- What they did: The study synthesized data across diverse taxa and tested scaling between CTmax and two warm-end thermal performance curve traits, Topt and TPCmax, across biological, experimental, and environmental contexts.
- The result: Species with higher CTmax tended to keep positive performance across a wider range of supra-optimal temperatures before reaching the upper performance limit, implying systematic covariation of these traits.
The findingWhy it mattersWhat they didThe result
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- Open access
- 1 cites