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Ultrastructural changes in the oocytes and hepatocytes associated with the maturation of gonads in the protogynous spinycheek grouper Epinephelus diacanthus (Valenciennes)

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Relation http://eprints.cmfri.org.in/10052/
 
Title Ultrastructural changes in the oocytes and hepatocytes associated
with the maturation of gonads in the protogynous spinycheek grouper
Epinephelus diacanthus (Valenciennes)
 
Creator Rao, A Chandrasekhara
Krishnan, L
Sanil, N K
 
Subject Fishery biology
Groupers
 
Description Ultrastructural changes in the oocytes and hepatocytes in the female Epinephelus diacanthus were studied with the progress
of maturation. Transmission electron microscopic (TEM) observations revealed cytological changes associated with ovarian
development. Nucleolus number increased in the perinucleolus stage, which is an indirect indication of increase in protein
synthesis with the onset of oogenesis. Zonation of yolk sphere and presence of microvilli in the zona radiata were observed
in mature oocytes. In comparison to the immature phase, mature/ripe satge hepatocytes showed greater development of
both endoplasmic reticulum and increased density of mitochondria in the cytoplasm which is an evidence of progress in
vitellogenin synthesis.
 
Date 2014
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/10052/1/8_Chandrasekhara_Rao.pdf
Rao, A Chandrasekhara and Krishnan, L and Sanil, N K (2014) Ultrastructural changes in the oocytes and hepatocytes associated with the maturation of gonads in the protogynous spinycheek grouper Epinephelus diacanthus (Valenciennes). Indian Journal of Fisheries, 61 (1). pp. 118-123.