Population analysis of Scomberomorus cavalla (Cuvier, 1829) (Perciformes, Scombridae) from the Northern and Northeastern coast of Brazil

Brazilian Journal of Biology

El. Santa Brígida¹  Db. Cunha¹  Ps. Rego¹  I. Sampaio¹  H. Schneider¹  M. Vallinoto¹ 

[1] ,Universidade Federal do Pará Instituto de Estudos Costeiros Laboratório de Genética e Biologia MolecularBragança PA ,Brazil

关键词: Scomberomorus cavalla;    D-loop;    population analysis;    Scomberomorus cavalla;    alça-D;    análise populacional;   

DOI  :  10.1590/S1519-69842007000500016

来源: SciELO

【 摘 要 】

Scomberomorus cavalla is a pelagic fish species widely distributed on the Atlantic west coast, and a noticeable decrease in its capture level in the USA and Gulf of Mexico is occurring, compared to the levels reached by the species in the past. Likewise, in some areas of Brazil, there has been indication of over-harvesting. However, there are no molecular studies focusing on the management of such an important item. Thus, in the present study, 380 nucleotide base pairs of the mitochondrial DNA D-Loop region of samples from Macapá, Bragança, and Fortaleza were sequenced. Phylogenetic and population analyses revealed that there is only one panmitic population, and low levels of genetic variability were verified. These results, as well as the noticed over-harvesting of S. cavalla, represent very important data to determine the management of such stock in order to prevent a collapse or the risk of future extinction.

【 授权许可】

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