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Surgical Sterilization Of Grass Carp (Ctenopharyngodon Idella Val.), David H. Clippinger

Retrospective Theses and Dissertations

In November, 1983, 93 sexually immature and 33 mature grass carp (Ctenopharyngodon idella Val.) were surgically sterilized by clipping the gonaduct or removing a section of the ovaries of testes through a ventral incision between the pelvic girdle and the vent. No mortality occurred from this procedure. After six months (May, 1984), 95.7% of the immature and 100% of the mature grass carp had at least some gonadal tissue regeneration. Fifty-nine percent of the immature fish regenerated a pathway for the eggs or milt to enter the environment. Artificial spawning of the mature female grass carp was 66.7% successful. Over …