A RECORD OF PROBOPYRUS BITHYNIS (RICHARDSON, 1904) IN MACRO BRACHIUM ROSENBERG!! (DE MAN) FROM COASTAL ANDHRA PRADESH, INDIA, WITH SPECIAL REFERENCE TO HOST -PARASITE RELATIONSHIP
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Authors
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R. P. Raman
Aquatic Animal Health Management Division, Central Institute of Fisheries Education (ICAR)
Fisheries University Road, Versova, Mumbai-400061, (INDIA).
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A. U. Pagarkar
College of Fisheries, (Dr. B.S. Konkan Krishi Vidyapeeth), Shirgaon,
Ratnagiri, Maharashtra, (INDIA).
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M. Makesh
Aquatic Animal Health Management Division, Central Institute of Fisheries Education (ICAR)
Fisheries University Road, Versova, Mumbai-400061, (INDIA).
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Neelima Gupta
Parasitology Laboratory, Department of Animal Sciences, MJP Rohilkhand University
Bareilly- 243 006 (INDIA)
Abstract
An incidence ofbopyrid isopod infestation was observed in giant freshwater
prawn, Macro brachium rosenbergii (de Man) juveniles ( 40-60 mm/0.9-1.5 g)
in a scampi culture farm in East Godavari district of Andhra Pradesh. The
presence of parasite was observed by conspicuous boil like swelling of the
branchial chamber where the parasite was found lodged on the gills. The
infested gill was highly compressed and necrosed. Only one branchial chamber
was infested by the parasite while the other gill was normal. The infested
prawns were thin and emaciated and showed retarded growth. The parasite
was identified as Probopyrus bithynis (Richardson, 1904) which caused
inhibition of ventilation due to its permanent lodging in the branchial chamber
and impaired the gaseous exchange by gills. It was also observed that this
parasite caused 'parasitic castration' in the infested prawns.
Keywords : Probopyrus, parasitic castration, branchial chamber,
Macrobrachium rosenbergii
