Pectoralis Muscle Fiber Diameter and Myonuclear Domain Remain Unchanged in Winter-Phenotype House Sparrows (Passer domesticus) Acclimated to Stable Warm, Stable Cold, and Fluctuating Cold Thermal Treatments.

Abstract excerpt

AbstractPhenotypic flexibility can allow for reversible changes in adult phenotypes according to prevailing environmental conditions, a concept referred to as environmental matching. Increasing thermal variability across seasons is one of the predicted effects of global climate change, and it includes sudden cold snaps, which will require rapid and flexible adjustments of physiology to match environmental...

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