Inferência filogenética em gaviões buteoninos (Aves: Accipitridae), com base em caracteres osteológicos cranianos / Phylogenetic inference in buteonine hawks (Aves: Accipitridade), based on cranial osteological characteres

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

The buteonine hawks are members of the family Accipitridae with a worldwide distribution but mainly restricted to the Neotropics. Traditionally, the buteonine group has included the genera Buteo, Busarellus, Buteogallus, Geranoaetus, Geranospiza, Harpyhaliaetus, Leucopternis and Parabuteo. Recently, molecular data has indicated that two other genera, Ictinia and Rosthramus, should be incorporated in this subgroup, although historically these have been treated as representative of another family subgroup, commonly known as kites. A comparative anatomical study was made on the cranial skeleton of representatives of the family Accipitridae, including those taxa historically related to the buteonine hawks. A sample of 98 cranial skeletons of 45 species representative of the order Falconiformes was analysed, and 34 of these were selected as terminal species in the phylogenetic analyses. A total of 59 characters were used to construct a data matrix which was submitted to a phylogenetic analysis and character optimization according to the principle of parsimony. Strict and majority rule consensus trees were calculated, and in an additional analysis, successive weighting approaches were conducted. The results permit the recognition of the subfamily Buteoninae supported by four synapomorphies and comprising the genera: Buteo, Geranoaetus, Buteogallus, Harpyhaliaetus Leucopternis and Parabuteo. However, the analysis does not fully support the relationships indicated by the molecular data for the group, since the genera Ictinia, Rosthramus and also Geranospiza are excluded from this clade, while the genus Busarellus appears as the most basal taxon of the sister group to the Buteoninae.

ASSUNTO(S)

osteologia gaviões-buteoninos buteonine hawks osteology phylogenetic systematics sistemática-filogenética

ACESSO AO ARTIGO

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