Improved heat tolerance in air drives the recurrent evolution of air-breathing.

Abstract

The transition to air-breathing by formerly aquatic species has occurred repeatedly and independently in fish, crabs and other animal phyla, but the proximate drivers of this key innovation remain a long-standing puzzle in evolutionary biology. Most studies attribute the onset of air-breathing to the repeated occurrence of aquatic hypoxia; however, this… (More)
DOI: 10.1098/rspb.2013.2927

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