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Biochemical and morphological changes in the chorion of the carp ( Cyprinus carpio ) oocyte, following the cortical reaction

Biochemical and morphological changes in the chorion of the carp ( Cyprinus carpio ) oocyte,... Summary Following oviposition and/or fertilization in fieshwater, the soft vitelline membrane surrounding the carp oocyte elevates and becomes tough (fertilization envelope). We have studied the biochemical (protease digestion) and morphological (analysis scanning electron microscopy) changes associated with this transformation. The vitelline envelope is easily digested by most proteolytic enzymes; following elevation, the chorion becomes very resistant to proteolyse. This chorion is much thinner and smoother than the vitelline membrane, but retains a characteristic porous appearance. These results are compared with previous observations obtained by transmission electron microscopy and are discussed in relation to the blockage to polyspermy. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Applied Ichthyology Wiley

Biochemical and morphological changes in the chorion of the carp ( Cyprinus carpio ) oocyte, following the cortical reaction

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References (35)

Publisher
Wiley
Copyright
Copyright © 1990 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0175-8659
eISSN
1439-0426
DOI
10.1111/j.1439-0426.1990.tb00505.x
Publisher site
See Article on Publisher Site

Abstract

Summary Following oviposition and/or fertilization in fieshwater, the soft vitelline membrane surrounding the carp oocyte elevates and becomes tough (fertilization envelope). We have studied the biochemical (protease digestion) and morphological (analysis scanning electron microscopy) changes associated with this transformation. The vitelline envelope is easily digested by most proteolytic enzymes; following elevation, the chorion becomes very resistant to proteolyse. This chorion is much thinner and smoother than the vitelline membrane, but retains a characteristic porous appearance. These results are compared with previous observations obtained by transmission electron microscopy and are discussed in relation to the blockage to polyspermy.

Journal

Journal of Applied IchthyologyWiley

Published: Jun 1, 1990

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