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dc.contributor.authorGirishKumar
dc.contributor.authorKunal, S.P.
dc.contributor.authorMenezes, M.R.
dc.contributor.authorMeena, R.
dc.date.accessioned2012-07-27T11:52:40Z
dc.date.available2012-07-27T11:52:40Z
dc.date.issued2012
dc.identifier.citationConservation Genetics, vol.13; 2012; 1119-1131
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/4108
dc.description.abstractKawakawa Euthynnus affinis is an epipelagic migratory tuna species, widely distributed in the tropical and subtropical waters of the Indo-Pacific region. Kawakawa constitutes the largest tuna fishery in the Indian waters. In the present study, genetic variation was assessed using sequence analyses of Mitochondrial DNA (mtDNA) D-loop region. A 500 bp segment of D-loop region was sequenced in 400 samples collected from eight localities (Veraval (VE), Ratnagiri (RA), Kochi (KO), Kavaratti (KA), Port-Blair (PB), Tuticorin (TU), Pondicherry (PO), and Vizag (VI)) along the Indian coast. Analysis of molecular variance of mtDNA data revealed no significant genetic differentiation among sites the (phi = 0.0028, P = 0.20723) indicating a single population along the Indian coast. Phylogenetic analysis revealed no obvious phylogeographic pattern separating the eight samples of kawakawa. However, the genealogical relationships demonstrated that mtDNA D-loop sequences belong to two different clades (clade I and clade II). Clade I is the major clade which consists of more than 98% specimens from each regional population while clade II has individuals from only three populations (VE, PO, and VI). Results of genetic analyses of the present study support a single stock management of kawakawa along the Indian coast.
dc.language.isoen
dc.publisherSpringer
dc.rightsAn edited version of this paper was published by Springer. This paper is for R & D purpose and Copyright [2012] Springer.
dc.subjecttuna fisheries
dc.subjectspecies diversity
dc.subjectbiomass
dc.subjectEuthynnus affinis
dc.titleSingle genetic stock of kawakawa Euthynnus affinis (Cantor, 1849) along the Indian coast inferred from sequence analyses of mitochondrial DNA D-loop region
dc.typeJournal Article


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