| 11. |
- Ericson, Per G P, et al.
(författare)
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Parallel Evolution of Bower-Building Behavior in Two Groups of Bowerbirds Suggested by Phylogenomics
- 2020
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Ingår i: Systematic Biology. - 1063-5157 .- 1076-836X. ; 69:5, s. 820-829
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Tidskriftsartikel (refereegranskat)abstract
- The bowerbirds in New Guinea and Australia include species that build the largest and perhaps most elaborately decorated constructions outside of humans. The males use these courtship bowers, along with their displays, to attract females. In these species, the mating system is polygynous and the females alone incubate and feed the nestlings. The bowerbirds also include 10 species of the socially monogamous catbirds in which the male participates in most aspects of raising the young. How the bower-building behavior evolved has remained poorly understood, as no comprehensive phylogeny exists for the family. It has been assumed that the monogamous catbird clade is sister to all polygynous species. We here test this hypothesis using a newly developed pipeline for obtaining homologous alignments of thousands of exonic and intronic regions from genomic data to build a phylogeny. Our well-supported species tree shows that the polygynous, bower-building species are not monophyletic. The result suggests either that bower-building behavior is an ancestral condition in the family that was secondarily lost in the catbirds, or that it has arisen in parallel in two lineages of bowerbirds. We favor the latter hypothesis based on an ancestral character reconstruction showing that polygyny but not bower-building is ancestral in bowerbirds, and on the observation that Scenopoeetes dentirostris, the sister species to one of the bower-building clades, does not build a proper bower but constructs a court for male display. This species is also sexually monomorphic in plumage despite having a polygynous mating system. We argue that the relatively stable tropical and subtropical forest environment in combination with low predator pressure and rich food access (mostly fruit) facilitated the evolution of these unique life-history traits.
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| 12. |
- Fjeldså, Jon, et al.
(författare)
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An updated classification of passerine birds
- 2020
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Ingår i: <em>The Largest Avian Radiation</em>. - Barcelona : Lynx Edicions. - 9788416728336 ; , s. 45-63
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 13. |
- Fjeldså, Jon, et al.
(författare)
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Introduction
- 2020
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Ingår i: <em>The Largest Avian Radiation</em>. - Barcelona : Lynx Edicions. - 9788416728336 ; , s. 11-13
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 14. |
- Fjeldså, Jon, et al.
(författare)
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The Largest Avian Radiation: The Evolution of Perching Birds, or the Order of Passeriformes
- 2020
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Bok (övrigt vetenskapligt/konstnärligt)abstract
- This book reveals the remarkable new history of how passerines diversified and dispersed across the entire world. It also presents and explains the new classification, which reflects the phylogenetic history. The new insights reveal that many of the old evolutionary lineages comprise only a few species that remained in their area of origin or underwent limited dispersal. Only a small number of groups underwent significant proliferation of new species and just five (of 145) passerine families are represented on all continents but Antarctica. Even so, the global variation in species richness generally correlates well with the variation in productivity across different environments. We see how a seemingly constant overall rate of evolution of new species is possible because of rapid proliferation in new ecological niches, including archipelagos, and an extraordinary accumulation of endemic species in certain tropical mountain ranges. In addition to describing the revised evolutionary history of passerine birds, the authors try to identify adaptational changes, including shifts in life history strategies, that underlie major evolutionary expansions.
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| 15. |
- Stervander, Martin, et al.
(författare)
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An updated chronology of passerine birds
- 2020
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Ingår i: <em>The Largest Avian Radiation</em>. - Barcelona : Lynx Edicions. ; , s. 387-396
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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