Oxygen supply limits the heat tolerance of avian embryos

John VandenBrooks, Jon Vimmerstedt, Dylan Padilla Pérez & Michael Angilletta
Physiologists have primarily focused on two potential explanations for heat stress in animals—the classic model of molecular stability and a more recent model of oxygen limitation. Although the classic model has widespread support, the oxygen-supply model applies to many aquatic animals and some terrestrial ones. In particular, the embryonic stage of terrestrial animals seems most susceptible to oxygen limitation because embryos acquire oxygen from the atmosphere by diffusion rather than ventilation. We report experiments confirming...
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2 downloads reported since publication in 2019.

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