Phylogeny and behavioral evolution in the family Icteridae
The evolution of selected behavioral characteristics in the family Icteridae is discussed in the light of the new DNA phylogeny. The woven pensile nest is found in only two of the main icterid clades, the caciques plus oropendolas (Cacicus and Psarocolius), and in the genus Icterus. It is difficult...
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2008 |
| País: | Argentina |
| Recursos: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/80656 |
| Acesso em linha: | http://hdl.handle.net/11336/80656 |
| Access Level: | acceso abierto |
| Palavra-chave: | https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
| Resumo: | The evolution of selected behavioral characteristics in the family Icteridae is discussed in the light of the new DNA phylogeny. The woven pensile nest is found in only two of the main icterid clades, the caciques plus oropendolas (Cacicus and Psarocolius), and in the genus Icterus. It is difficult to assert if this nest type represents an ancestral character to both lineages, or a case of convergence. Nest building mostly by males is only known in the South American genus Chrysomus. Cooperative breeding is found mostly in the South American quiscaline clade, with reports for 13 species. The hypothesis that cooperative breeding is an ancestral trait in this clade is supported by its unusual frequency in the group, and also because it is found in the genus Macroagelaius, placed in a basal position in the lineage. Brood parasitism evolved only once in the family, probably in ancestral North American cowbirds. Withouth denying a role for environment in shaping icterid behavior, the new molecular data supports the idea of an important phylogenetic component in behavioral evolution |
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