Betanodavirus-associated mortality in Asian seabass (Lates calcarifer, Bloch) cultured in indoor tanks and sea cages

Sharma, S R Krupesha and Pradeep, M A and Dube, Praveen and Arun Kumar, T V and Kumar, Raj and Raja Swaminathan, T (2018) Betanodavirus-associated mortality in Asian seabass (Lates calcarifer, Bloch) cultured in indoor tanks and sea cages. Aquaculture International. pp. 1-8.

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Abstract

Sea cage farming of Asian seabass is a prospective aquaculture activity in India. Reports from India on betanodavirus-induced mortality in marine fish culture are not many. An outbreak of viral encephalopathy and retinopathy associated with red-spotted grouper nervous necrosis virus (RGNNV) genotype of betanodavirus in Asian seabass juveniles reared in indoor tanks and sea cages is described in the present paper. Mortality was less severe in cages when compared to tanks. Sequence analysis of the coat protein gene indicated that the virus belonged to RGNNV genotype but found to be distinct from other reported RGNNV isolates. Virus was able to induce cytopathic effects in fish cell lines. Light microscopic features of the disease are also described.

Item Type:	Article
Uncontrolled Keywords:	Asian seabass; Betanodavirus; RT-PCR; Sequencing Cell culture; Cage culture
Subjects:	Aquaculture > Cage culture Aquaculture > Seabass
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:	16 Nov 2018 10:45
Last Modified:	02 Sep 2020 05:13
URI:	http://eprints.cmfri.org.in/id/eprint/13236

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