Consulta: creatorFacets:"Paiva,Paulo C."
Registros recuperados: 2
Data/hora: 06/06/2024 01:39:20

Genetic and morphometric differences between yellowtail snapper (Ocyurus chrysurus, Lutjanidae) populations of the tropical West Atlantic
Provedor de dados: 74
Autores: Vasconcellos,Anderson V.; Vianna,Paulo; Paiva,Paulo C.; Schama,Renata; Solé-Cava,Antonio.
Populations of Ocyurus chrysurus were compared genetically and morphometrically along the West Atlantic coast to test the null hypothesis of population homogeneity in the area. Brazilian populations were found to be differentiated in shape (canonical variates analysis; F[48,515] = 10.84, p &lt; 0.0001). Analyses of mitochondrial DNA sequences (663 bp of the control region) did not show any differences between Brazilian populations but could detect differences between Brazilian and Caribbean (Belize) populations. The samples from Pernambuco differed significantly from the other Brazilian populations in allozyme frequencies (11 loci; F ST = 0.167; p &lt; 0.05), but this may have resulted from the small number of samples analysed for that population. Sequence...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: MtDNA; Allozymes; Morphometry; Fisheries; Phylogeography.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000200026

A morphometric analysis of Eunice Cuvier (Annelida, Polychaeta) species
Provedor de dados: 104
Autores: Costa-Paiva,Elisa M.; Paiva,Paulo C.
Morphology has been the subject of several studies in Eunice specially in the context of the taxonomy and evolutionary relationships of taxa within this genus. In this study we opt for a morphometric approach comparing five species of Eunice to assess if it was possible to delimitate them by shape variables. The morphology of E.fucata, E.insularis, E. cf. ornata, E.rubra, and Eunice sp. was compared using traditional morphometric analysis of 16 measured variables. After removing the size-effect, a Canonical Variates Analysis applied to morphometric variables was able to discriminate all species. In CV1 two major groups of species were discriminated: E.fucata/E.insularis and E. cf. ornata/E.rubra/Eunice sp. CV2 strongly discriminated all species, with E....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body-size; Eunicid; Morphometry; Multivariate analysis; Taxonomy.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000200013