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Title
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Hybridization between sister taxa versus non-sister taxa : a case study in birds
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Author
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Abstract
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| Capsule Sister taxa hybridize more frequently than non-sister taxa. Aims To test whether the frequency of hybridization is higher in avian sister species than in non-sister species, based on molecular phylogenetic relationships and reports of hybridizing bird species globally. Methods A literature based survey of hybridizing bird species was conducted on genera that: (1) have a completely known phylogenetic molecular tree for at least 90% of the total number of species, (2) have at least four species, (3) have an incidence of hybridization more than 25% recorded from the wild, and (4) have at least two pairs of hybridizing species. The frequency of hybridization for avian sister species was compared to that of non-sister species. Results Twenty-nine genera were identified that met our four selection criteria. In 25 genera, sister species hybridized more than non-sister species (mean frequencies of 0.52 ± 0.35 versus 0.16 ± 0.13). Conclusion The frequency of hybridization within sister species was found to be higher than within non-sister species. |
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Language
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English
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Source (journal)
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Bird study. - London, 1954, currens
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Publication
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London
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2013
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ISSN
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0006-3657
[print]
1944-6705
[online]
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DOI
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10.1080/00063657.2013.770815
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Volume/pages
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60
:2
(2013)
, p. 195-201
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ISI
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000326713400006
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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