Document Type

Article

Publication Date

11-1-2001

Keywords

Ambystoma, Animals, Cell Hypoxia, Cell Size, Female, Ovum, Oxygen, Oxygen Consumption

Abstract

Aquatic amphibian eggs frequently encounter hypoxic conditions that have the potential to limit oxygen uptake and thereby slow embryonic development and hatching. Oxygen limitation might be avoided if egg capsule surface area and oxygen conductance increased in response to hypoxia. We investigated this possibility in two salamander species, Ambystoma annulatum and Ambystoma talpoideum. The effective surface area of egg capsules increased in response to hypoxia, which increased the conductance for oxygen and enhanced oxygen transport. The ability of amphibian eggs to adjust their conductance in response to oxygen availability may increase survival in hypoxic environments.

Recommended Citation

Mills, Nathan E., M. Christopher Barnhart, and R. D. Semlitsch. "Effects of hypoxia on egg capsule conductance in Ambystoma (Class Amphibia, Order Caudata)." Journal of Experimental Biology 204, no. 21 (2001): 3747-3753.

Department

Biology

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