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Early life experiences can have long-term consequences on how individuals react to environmental change later in life, affecting the ability for populations to respond to selection. We investigated how the hormone plasticity in embryos affected metabolic plasticity to temperature later in life here in this lab. To determine the repeatability of average metabolic rate and thermal plasticity, we've repeatedly measured individual reaction norms across six temperatures over a period of 3. 5 months. Importantly, reaction norm repeatability did not depend on early developmental temperature. For terrestrial ectotherms living in changing climate, discovering factors that influence among-individual variation in thermal plasticity will become increasingly important. Thermal plasticity is robust to early developmental temperatures and has the ability to adapt, according to our findings, despite there being less frequent variation in metabolic rate in hot environments.
Source link: https://doi.org/10.1007/s10682-022-10160-1
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