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.

Department(s)

Biology

Document Type

Article

Rights Information

© 1989 by Company of Biologists

Keywords

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

Publication Date

11-1-2001

Journal Title

Journal of Experimental Biology

Download

Share

COinS