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On the incidence of the sporozoan Thelohania Prox Duorara Iversen and manning in commercially important prawns at Madras

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Relation http://eprints.cmfri.org.in/1189/
 
Title On the incidence of the sporozoan Thelohania Prox Duorara Iversen and manning in commercially important prawns at Madras
 
Creator James, D B
 
Subject Fish Toxicology
Prawn and Prawn fisheries
 
Description In the commercial catches at Madras, Penaeus semisulcatus and P. indicus were seen to be affected by
the sporozoan parasite Thelohania prox duorara Iversen and Manning. The incidence varies from 0.5 to
2%. Among the infected prawns 87% belong to P. semisulcatus onA \'i% to P. indicus. In both the
species the infection starts after they reach a length of 130 mm. First, the parasite infests the gonad, then
the liver and finally the body musculature. Both the sexes are more or less equally affected by the parasite.
The infection becomes severe with advancing age. More number of diseased prawns were encountered during
the night landings. A few specimens of P. monodon harvested at CMFRI Muthukadu Mariculture Farm
near Madras were also seen to be affected by the parasite. Details regarding total length, weight, sex and
degree of infection for a two-year period are discussed.
 
Publisher MBAI
 
Date 1986
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/1189/1/James__225-228.pdf
James, D B (1986) On the incidence of the sporozoan Thelohania Prox Duorara Iversen and manning in commercially important prawns at Madras. Journal of the Marine Biological Association of India, 28 (1&2). pp. 225-228.