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Host-parasite relation between Bucephalopsis haemeanas and Crassostrea madrasensis in the Pulicat Lake

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Relation http://eprints.cmfri.org.in/9160/
 
Title Host-parasite relation between Bucephalopsis haemeanas and Crassostrea madrasensis in the Pulicat Lake
 
Creator Thangavelu, R
Sanjeevaraj, P J
 
Subject Edible oyster
Invertebrata
 
Description A digenic trematode Bricepltnlopsis Itne~nenrtnws as observed in the gonads of the backwater oyster
Crassos~rearnndrnseisofth e Pulicat Lake. Maximum vercenta-n eof infection was 17.7 durine-D ecember.
Highest inc~dence of infection was observed in the size groups of 60-69 mm and 100-109 mm.
Initially the infection was noticed in the gonads of the oyster andlater it was found to invade the other
tissues such as mantle, gill and digestive gland. Infection was found to be more in the partly spent
and spent indiv~duals than in the fully ripe and individuals with gametogenic activity. As a result
of infection, gametes are resorbed quickly and thus oysters are castrated leading to indeterminate
stage. In the majority of parasitised oysters, feed~ngw as noted to be very poor. The infection seems
to be seasonal and starts when the sallnity and tem2erature in lake decline considerably after the
heavy rains of North-East Monsoon. The parasites were observed to die at the salinity below 2.3%,.
 
Publisher Marine Biological Association of India
 
Date 1987
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/9160/1/Thangavelu_JMBAI_Vol.29%281%262%29_new.pdf
Thangavelu, R and Sanjeevaraj, P J (1987) Host-parasite relation between Bucephalopsis haemeanas and Crassostrea madrasensis in the Pulicat Lake. Journal of the Marine Biological Association of India, 29 (1). pp. 220-225.