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Sodré,Davidson; Rodrigues-Filho,Luis F.S.; Souza,Rosália F.C.; Rêgo,Péricles S.; Schneider,Horacio; Sampaio,Iracilda; Vallinoto,Marcelo. |
Carcharhinus limbatus has a cosmopolitan distribution and marked genetic structuring, mainly because of its philopatric behavior. However, analysis of this structuring has not previously included South American populations. In the present study, we analyzed a sample of adult individuals collected on the northern coast of Brazil and compared the sequences of the mitochondrial control region with those of populations already genotyped. Relatively high haplotype diversity (12 haplotypes, genetic diversity of 0.796) was observed, similar to that in other populations but with a much larger number of private alleles. In contrast to populations studied previously, which were represented by neonates, the pronounced allelic variability found in the South American... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carcharhinus limbatus; Control region; Fishery stocks; Mitochondrial DNA; Population genetics. |
Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000500008 |
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Cunha,Williana T. R.; Santos,Rita C. O.; Araripe,Juliana; Sampaio,Iracilda; Schneider,Horacio; Rêgo,Péricles S.. |
Abstract In the present study, we investigated the possible existence of new lineages of peripatids through comparisons between known Neotropical species and specimens obtained from two locations in Pará, a state in eastern Brazilian Amazonia using a molecular approach based on sequences of the mtDNA genes COI, 16Sr RNA, and 18S RNA. The analyses included also sequences of Asian and African taxa for a more systematic understanding of the phylogenetic relationships within the group. The analysis of the COI, 16S rRNA and 18S RNA sequences permitted the identification of three distinct lineages (A, B and C) based on two different phylogenetic approaches (Bayesian methods and ML). The three lineages presented here are completely distinct from all other... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazonia; New lineages; Peripatidae; Phylogeny; Onychophora. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572017000100147 |
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