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Neuroendocrine regulation of ovarian maturation in the Indian white prawn Penaeus indicus H. Milne Edwards

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Title Neuroendocrine regulation of ovarian maturation in the Indian white prawn Penaeus indicus H. Milne Edwards
 
Creator Mohamed, K S
Diwan, A D
 
Subject Prawn and Prawn fisheries
 
Description Neuroendocrine Regulation of ovarian maturation in the
Indian white prawn Penaeus indicus H. Milne Edwards. Aquaculture, 98: 381-393.
The control and regulation of ovarian maturation by neurosecretory elements in the eyestalk, brain
and thoracic ganglia of Penaeus indicus have been examined. In the X-organ complex of the eyestalk,
secretions from type A and B cells are apparently involved in inhibiting ovarian maturation, while in
the brain and thoracic ganglia, secretions from type GN, A and B ce!ls had a stimulatory effect on the
ovary. The pyriform C cells were not involved with ovarian maturation. Both unilateral and bilateral
eyestalk ablation resulted in precocious maturation of the ovary. The histology of the remaining eyestalk
in unilaterally ablated animals revealed that all the NSCs in the X-organs were in a suppressed
state and the sinus gland was devoid of granular aggregations. Abnormal behaviour was noticed in
bilaterally ablated prawns and strangely few animals moulted with developing ovaries. Due to the
synchronous occurrence of moulting and reproductive activities the probability of both gonad and
moult inhibiting hormones being the same is discussed. In addition the relationship between gonadal
maturation and the moult cycle has also been studied.
 
Date 1991
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/6151/1/530.pdf
Mohamed, K S and Diwan, A D (1991) Neuroendocrine regulation of ovarian maturation in the Indian white prawn Penaeus indicus H. Milne Edwards. Aquaculture, 98. pp. 381-393.