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Phylogenetic signal and major ecological shifts in the ecomorphological structure of stream fish in two river basins in Brazil Neotropical Ichthyology
Roa-Fuentes,Camilo Andrés; Casatti,Lilian; Romero,Renato de Mei.
We tested the contribution of the phylogenetic and specific components to the ecomorphological structure of stream fish from the upper Paraguai River and upper São Francisco River basins, and identified nodes in the phylogenetic tree at which major ecological shifts occurred. Fish were sampled between June and October of 2008 in 12 streams (six in each basin). In total, 22 species from the upper Paraguai River basin and 12 from the upper São Francisco River were analyzed. The ecomorphological patterns exhibited phylogenetic signal, indicating that the ecomorphological similarity among species is associated with the degree of relatedness. A strong habitat template is most likely to be the primary cause for a high phylogenetic signal. A significant...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Morphological diversity; Niche conservatism; Ecophylogenetics; Paraguay basin; São Francisco basin.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000100165
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