Zobrazeno 1 - 3
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pro vyhledávání: '"M. J. Packard"'
Publikováno v:
Journal of morphology. 246(2)
Hatchlings of the North American painted turtle (Chrysemys picta) spend their first winter of life inside a shallow, subterranean hibernaculum (the natal nest) where they may be exposed for extended periods to ice and cold. Hatchlings seemingly survi
Publikováno v:
Environmental Entomology. 10:97-104
As compared to water loss from eggs of several other species, eggs of range caterpillar, Hemileuca oliviae Cockerell, are quite resistant to desiccation. Range caterpillar eggs lack aeropyles, and gas exchange apparently occurs through the micropyle.
Autor:
M J, Packard, N B, Clark
Publikováno v:
The Journal of experimental zoology. Supplement : published under auspices of the American Society of Zoologists and the Division of Comparative Physiology and Biochemistry. 1
Calcium metabolism of chicken embryos was profoundly affected by incubation in shell-less culture, but phosphate metabolism was largely undisturbed. Shell-less embryos exhibited hypocalcemia and hypocalciuria relative to normal embryos but had simila