SciELO - Scientific Electronic Library Online

vol.49 issue3A simple method to estimate spatial complexity in aquatic plantsBlood parameter analysis and morphological alterations as biomarkers on the health of Hoplias malabaricus and Geophagus brasiliensis author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Brazilian Archives of Biology and Technology

Print version ISSN 1516-8913On-line version ISSN 1678-4324


PUCHNICK-LEGAT, Angela  and  LEVY, José Alberto. Genetic structure of Brazilian populations of white mouth croaker Micropogonias furnieri (Perciformes : Sciaenidae). Braz. arch. biol. technol. [online]. 2006, vol.49, n.3, pp.429-439. ISSN 1516-8913.

Mitochondrial (mt) DNA population structure was examined by using restriction fragment length polymorphism analysis (RFLP) among 149 white mouth croakers (Micropogonias furnieri) sampled from six locations in the Brazilian coast. Heterogeneity tests revealed no differentiation in mtDNA haplotype frequencies within the region between 23°S and 34°S (P=0.263), but significant heterogeneity was detected between north and south of 23°S (P<0.003). Analysis of molecular variance (AMOVA) indicated a low FST value (0.008, P=0.180) among south-central localities (23-34°S), but a significant level of population subdivision (FST = 0.322, P< 0.003) between north and south-central localities. UPGMA analysis of mtDNA sequence divergence revealed differentiation between white mouth croakers collected from north and south of 23°S. Mantel test found significant association between matrices of genetic distance and geographic distance among samples. Collectively, these data were consistent with a single genetic stock of Micropogonias furnieri in the Brazilian coast, with semi-isolated populations occurring in the north and south of 23° S.

Keywords : Genetic population structure; mitochondrial DNA; RFLP; Micropogonias furnieri.

        · abstract in Portuguese     · text in English     · English ( pdf epdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License