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Molecular data reve...
Molecular data reveal some major adaptational shifts in the early evolution of the most diverse avian family, the Furnariidae
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Fjeldså, Jon (författare)
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- Irestedt, Martin (författare)
- Naturhistoriska riksmuseet,Enheten för bioinformatik och genetik
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- Ericson, Per G P, 1956- (författare)
- Naturhistoriska riksmuseet,Forskningsavdelningen centralt
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(creator_code:org_t)
- 2004-09-14
- 2005
- Engelska.
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Ingår i: Journal of Ornithology = Journal fur Ornithologie. - : Springer Science and Business Media LLC. - 0021-8375 .- 1439-0361. ; 146:1, s. 1-13
- Relaterad länk:
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http://link.springer...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- A robust phylogeny estimate for the family Furnariidae (sensu lato) was obtained using sequences of two nuclear introns and one mitochondrial gene (cyt b). Contrary to the widely accepted sister-group relationship of ovenbirds (Furnariinae) and woodcreepers (Dendrocolaptinae), a basal clade is suggested for Sclerurus and Geositta, while Xenops, hitherto considered an aberrant ovenbird, was found to occupy a basal position on the woodcreeper lineage. The morphological variation is re-interpreted in view of this revised phylogenetic hypothesis. Presumably, the remarkable adaptive radiation in this family started as primitive, Sclerurus-likes forms, which used the tail as a prop during terrestrial feeding, lured up to seek food on tree-trunks. The two basal woodcreeper genera, Xenops and then Glyphorynchus, show strong cranial specializations for hammering in wood, thus presenting a remarkable parallelism with the family Picidae, Xenops resembling a piculet, Glyphorynchus, a diminutive woodpecker. However, this specialization was lost in other woodcreepers, which show a more normal passerine skull, adapted for probing and prying in tree-trunk crevices and sallying for escaping insects. The ovenbirds developed a more flexible (rhynchokinetic) bill, well suited for probing and retrieving hidden prey in dead-leaf clusters and debris suspended in the vegetation, and in epiphyte masses. Adaptations to live in open terrain are secondary.
Ämnesord
- NATURVETENSKAP -- Biologi -- Biologisk systematik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Biological Systematics (hsv//eng)
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
Nyckelord
- Adaptative shifts
- Bayesian analysis
- Dendrocolaptinae
- Furnariinae
- Nuclear introns
- Livets mångfald
- Diversity of life
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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