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Haldane rule and sex biassed gene flow between two hybridizing flycatcher species: (Ficedula albicollis and F. hypoleuca, Aves: Muscicapidae)
Uppsala universitet.
1990 (English)In: Evolution, ISSN 0014-3820, E-ISSN 1558-5646, Vol. 44, no 8, p. 2012-1221Article in journal (Refereed) Published
Abstract [en]

The collared flycatcher (Ficedula albicollis) and the pied flycatcher (F. hypoleuca) hybridize where their geographic ranges overlap. Restriction fragment comparison of 5% of the mitochondrial genome showed a sequence divergence of 10% between these flycatcher species. This degree of sequence divergence between a closely related pair of bird species is unusually high and contrasts with the low level of divergence between F. albicollis and F. hypoleuca in nuclear genes (Nei's D = 0.0006) revealed by enzyme electrophoresis. The low nuclear differentiation is explained by sex biassed gene flow and introgression in nuclear genes (via fertile male hybrids), while the high mitochondrial DNA sequence divergence is preserved by sterility of female hybrids, which prevents mitochondrial introgression. This pattern is in accordance with Haldane's rule and is supported by field data on hybrid fertility. The high mtDNA differentiation could be explained by transfer of mitochondrial DNA from a third species during a past period of hybridization.

Place, publisher, year, edition, pages
1990. Vol. 44, no 8, p. 2012-1221
Identifiers
URN: urn:nbn:se:ltu:diva-6182Local ID: 462003a0-a89c-11dc-9057-000ea68e967bOAI: oai:DiVA.org:ltu-6182DiVA, id: diva2:979059
Note

Upprättat; 1990; 20071212 (hage)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2019-03-06Bibliographically approved

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Gelter, Hans

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