Hatching of Amphibian Embryos: The Physiological Trigger

Hatching of Amphibian Embryos: The Physiological Trigger

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...

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Veröffentlicht in:Science (American Association for the Advancement of Science) 1982-07, Vol.217 (4556), p.257-259
Hauptverfasser: Petranka, James W., Just, John J., Crawford, Eugene C.
Format: Artikel
Sprache:eng
Schlagworte:
Ambystoma - physiology
Amphibians
Animals
Antiserum
Bone marrow
Capsules
Eggs
Eggs (Biology)
Embryo, Nonmammalian - physiology
Embryos
Enzymes
Female
Hatching
Hypoxia
Leukemia
Ovum - physiology
Physiological aspects
Salamanders
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Beschreibung
Zusammenfassung: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.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.7089563