Effects of Infra-Red Light on Subsequent Cleavage of the Eggs of Urechis Caupo

Autor:	Clarence Nelson, S. C. Brooks
Rok vydání:	1935
Předmět:	Physiology Anatomy Aquatic Science Biology Cleavage (embryo) Insemination Membrane Insect Science Biophysics Animal Science and Zoology Molecular Biology Urechis caupo Ecology Evolution Behavior and Systematics Fertilisation
Zdroj:	Journal of Experimental Biology. 12:212-216
ISSN:	1477-9145 0022-0949
DOI:	10.1242/jeb.12.3.212
Popis:	1. Eggs of Urechis caupo were exposed to infra-red light of wave-lengths from 0·7 to 2·0µ. 2. Upon subsequent insemination the rate of cleavage and sometimes also the proportion of the eggs forming fertilisation membranes was reduced. 3. This effect gradually disappeared after irradiation, especially during the time preceding insemination. This has been interpreted as due either to recovery from the effects of the irradiation or to a more lasting retardation of normal ageing processes in the eggs. 4. The photochemical nature of these effects is pointed out and discussed.
Databáze:	OpenAIRE
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