NDLI: Histological studies on the spent ovaries of aged snow crabs Chionoecetes opilio caught in the Sea of Japan

Content Provider	Springer Nature Link
Author	Kon, Toshi Ono, Masahiro Honma, Yoshiharu
Copyright Year	2010
Abstract	Aged female snow crabs Chionoecetes opilio, 9 or so years old after their final molt, were collected sporadically from artificial reefs established off the coast of Wakasa Bay, Sea of Japan. In order to clarify the degenerative changes that occur in spent ovaries, the ovaries of these crabs were examined histologically. The ovaries were found to be reduced in both size and volume, with most showing significant oosorption by follicular epithelial cells. Reserve fund eggs and unspawned eggs were rarely detected, with the exception of some in atretic follicles. One to dozens of orange to black nodules scattered over the ovary consisted of masses of degenerative ova in various stages of oolysis. Since nodular formation was recognized in 26% of these aged individuals, it seems very likely that such crabs are unable to spawn healthy eggs.
Starting Page	227
Ending Page	233
Page Count	7
File Format	PDF
ISSN	09199268
Journal	Fisheries Science
Volume Number	76
Issue Number	2
e-ISSN	14442906
Language	English
Publisher	Springer Japan
Publisher Date	2010-02-11
Publisher Place	Japan
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Aged snow crab Chionoecetes opilio Ovarian histology Sea of Japan Spent ovary Food Science Freshwater & Marine Ecology Fish & Wildlife Biology & Management
Content Type	Text
Resource Type	Article
Subject	Aquatic Science

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Histological studies on the spent ovaries of aged snow crabs Chionoecetes opilio caught in the Sea of Japan