Perkinsus olseni in the short neck yellow clam, Paphia malabarica (Chemnitz, 1782) from the southwest coast of India

Shamal, P and Zacharia, P U and Binesh, C P and Pranav, P and Suja, G and Asokan, P K and Pradeep, M A and Ranjan, Ritesh and Vijayan, K K and Sanil, N K (2018) Perkinsus olseni in the short neck yellow clam, Paphia malabarica (Chemnitz, 1782) from the southwest coast of India. Journal of Invertebrate Pathology, 159. pp. 113-120.

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Abstract

Parasites of the genus Perkinsus predominantly infect bivalves, and two species among them, P. olseni and P. marinus, are notifiable to OIE. P. olseni infections are known to cause extensive damage to wild as well as farmed bivalves globally with enormous implications to its fishery. Consequent to the initiation of a surveillance programme for aquatic animal diseases in India, Perkinsus infections were observed in many species of bivalves. The present paper describes P. olseni infections in the short neck yellow clam, Paphia malabarica from the southwest coast of India. Diagnosis of the parasite was carried out using Ray's Fluid Thioglycollate Medium culture, histology, in-situ hybridisation and molecular taxonomy. Pathology of infection and development of zoospores is also described. This forms the first report of a P. olseni infection in P. malabarica. High prevalence and intensity of infection of Perkinsus in clams raises concerns, as clam reserves in this geographical area sustain fisheries and the livelihoods of local fishing communities.

Item Type:	Article
Uncontrolled Keywords:	Perkinsus olseni; Paphia malabarica; Histology; Phylogeny; In-situ hybridization; Sporulation; Reservoir host
Subjects:	Molluscan Fisheries > Clam Fish and Fisheries > Fish Disease Fish and Fisheries > Fish Pathology Fish Biotechnology
Divisions:	CMFRI-Kochi > Marine Biotechnology, Fish Nutrition and Health Division Subject Area > CMFRI > CMFRI-Kochi > Marine Biotechnology, Fish Nutrition and Health Division CMFRI-Kochi > Marine Biotechnology, Fish Nutrition and Health Division Subject Area > CMFRI-Kochi > Marine Biotechnology, Fish Nutrition and Health Division
Depositing User:	Arun Surendran
Date Deposited:	05 Mar 2019 07:23
Last Modified:	05 Mar 2019 07:23
URI:	http://eprints.cmfri.org.in/id/eprint/13427

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