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Mitochondrial DNA analysis reveals three stocks of yellowfin tuna Thunnus albacares (Bonnaterre, 1788) in Indian waters

DRS at CSIR-National Institute of Oceanography

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Title Mitochondrial DNA analysis reveals three stocks of yellowfin tuna Thunnus albacares (Bonnaterre, 1788) in Indian waters
 
Creator Kunal, S.P.
GirishKumar
Menezes, M.R.
Meena, R.M.
 
Subject population structure
tuna fisheries
DNA
Thunnus albacares
 
Description Yellowfin tuna (Thunnus albacares) is an epipelagic, oceanic species of family Scombridae found in tropical and subtropical region of Pacific, Indian and Atlantic Ocean. It is commercially important fish and accounts for 19 percent of total tuna catches in Indian waters. In present study, population structure of yellowfin tuna was examined using sequence analysis of mitochondrial DNA from seven geographically distinct locations along the Indian coast. A 500 bp segment of D-loop region was sequenced and analysed for 321 yellowfin samples. Hierarchical analysis of molecular variance showed significant genetic differentiation among three groups (VE); (AG); (KO, TU, PO, VI, PB) analyzed (Theta sub(ST)=0.03844, P less than or equal to 0.001). In addition, spatial analysis of molecular variance identified three genetically heterogeneous groups of yellowfin tuna in Indian waters. Results were further corroborated by significant value of nearest neighbour statistic (S sub(nn)=0.261, P less than or equal to 0.001). Thus finding of this study rejects the null hypothesis of single panmictic population of yellowfin tuna in Indian waters.
 
Date 2013-03-05T07:30:14Z
2013-03-05T07:30:14Z
2013
 
Type Journal Article
 
Identifier Conservation Genetics, vol.14(1); 2013; 205-213
http://drs.nio.org/drs/handle/2264/4258
 
Language en
 
Rights An edited version of this paper was published by Springer. This paper is for R & D purpose and Copyright [2012] Springer.
 
Publisher Springer