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Science 16 July 1982:
Vol. 217. no. 4556, pp. 257 - 259
DOI: 10.1126/science.7089563
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Articles

Science, Vol 217, Issue 4556, 257-259
Copyright © 1982 by American Association for the Advancement of Science

articles

Hatching of amphibian embryos: the physiological trigger

JW Petranka, JJ Just, and EC Crawford

Marbled salamander embryos hatch in water if the environmental oxygen pressure is 86 torr or less, but do not hatch if the environmental oxygen pressure is equivalent to that of air. Under hypoxic conditions, embryos hatch in aqueous and nonaqueous media with equal success. Increasing carbon dioxide pressure does not induce hatching, but does decrease the time to hatching by altering environmental pH.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
External gills and adaptive embryo behavior facilitate synchronous development and hatching plasticity under respiratory constraint.
J. R. Rogge and K. M. Warkentin (2008)
J. Exp. Biol. 211, 3627-3635
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