Population Structure of Carite (Scomberomorus brasiliensis) in Waters Offshore of Trinidad and Northern Venezuela

Document Type

Article

Publication Date

4-1-2010

Department

Coastal Sciences, Gulf Coast Research Laboratory

Abstract

Population structure of carite (Serra Spanish mackerel, Scomberomorus brasiliensis) in waters offshore of Trinidad and northern Venezuela was assessed by analysis of allele and genotype distributions at 16 nuclear-encoded microsatellites and mitochondrial (mt)DNA haplotype distribution among individuals from five localities in the southern Caribbean Sea Tests of homogeneity (microsatellites) revealed a genetically disci ere subpopulation (stock) of carite in the Cariaco Basin along the northern coast of Venezuelan mainland This subpopulation contained a small, highly divergent clade of four mtDNA haplotypes that possibly represent recent admixture of formerly isolated subpopulations Spatial autocorrelation analysis of the microsatellite data was consistent with the notion that carite from Isla de Margarita (Venezuela) and Trinidad may warrant management as distinct stocks, while spatial autocorrelation analysis and tests of selective neutrality of mtDNA variation suggested that carite off the south coast of Trinidad differ from carite along the west and north coasts The implication of these findings is that there may be a number of spawning stocks of carite in the southern Caribbean Sea (C) 2010 Elsevier B V. All rights reserved

Publication Title

Fisheries Research

Volume

103

Issue

1-3

First Page

30

Last Page

39

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