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Título: Evolution of seasonal ecological niches in the Passerina buntings (Aves : Cardinalidae)
Autores: MartínezMeyer, E
Peterson, AT
Navarro Sigüenza, Adolfo Gerardo
Fecha: 20110122T10:26:37Z
20110122T10:26:37Z
2004
Publicador: Facultad de Ciencias - UNAM
Fuente:
Tipo: Artículo de investigación
Tema: Biology
Ecology
Evolutionary Biology
migration
Passerina
phylogeny
ecological niche modelling
Descripción: and (ii) the derived state of the breeding (rather than winter) ecological niches of each species.
The evolution of migration has long been considered complex and recent work has demonstrated additional complexity: some species follow the same ecological conditions throughout the year, whereas others 'switch niches' between breeding and wintering ranges. Hypotheses regarding the evolution of migration would generally predict nichefollowing as primitive, and nicheswitching as derived. However, no test has, to our knowledge, yet determined the directionality of evolution of these states within a lineage. We present an analysis of phylogenetic dimensions of seasonal niches in the Passerina buntings that indicates greater evolutionary change in the niches of breeding populations than among those of wintering populations. These results are consistent with hypotheses of (i) niche conservatism (in winter, at least) across a recently speciated lineage
Idioma: Inglés

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