Abstract
AbstractThe present study examined in vivo and in vitro the effects of extracts of the central nervous system (brain and thoracic ganglion) and muscle tissue on ovarian development in the shrimp, Paratya compressa. Both the brain and thoracic ganglion extracts stimulated vitellogenesis in oocytes. In particular, the brain extracts especially were more effective than those of thoracic ganglion in inducing this response. The extracts of muscle tissue did not have any effect on the ovaries. These results demonstrate that an ovarystimulating factor in the central nervous system may act directly in ovarian vitellogenesis.
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