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Genetic structure of Brazilian populations of white mouth croaker Micropogonias furnieri (Perciformes : Sciaenidae) BABT
Puchnick-Legat,Angela; Levy,José Alberto.
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 F ST value (0.008, P=0.180) among south-central localities (23-34°S), but a significant level of population subdivision (F ST = 0.322, P< 0.003) between north and south-central localities. UPGMA analysis of mtDNA sequence divergence revealed differentiation...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Genetic population structure; Mitochondrial DNA; RFLP; Micropogonias furnieri.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000400011
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Genetic variability of marine shrimp in the Brazilian industry PAB
Maggioni,Rodrigo; Coimbra,Maria Raquel Moura; Costa,Raimundo Bezerra da; Diniz,Fábio Mendonça; Molina,Wagner Franco; Oliveira,Diana Magalhães de; Puchnick-Legat,Angela.
The objective of this work was to estimate the genetic variability level and distribution in Brazilian broodstocks of marine shrimp (Litopenaeus vannamei). Nine of the country's largest hatcheries were evaluated using codominant and highly polymorphic microsatellite markers. The results obtained from genotyping of ten microsatellite loci are indicative of genetic variability that is compatible with that found in wild populations of L. vannamei in Mexico and Central America. A possible explanation is the highly diversified and relatively recent origin of the available broodstocks. Bayesian analysis detected a signal for five founding populations. The distribution of genetic distances partially reflects geographical location, and this information will be...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Litopenaeus vannamei; Aquaculture; Microsatellite; Shrimp farming.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013000800026
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