Male-biased gene flow across an avian hybrid zone: evidence from mitochondrial and microsatellite DNA
(2001) In Journal of evolutionary biology 14(2). p.277-287- Abstract
- Mating pattern and gene flow were studied in the contact zone between two morphologically very similar Chiffchaff taxa (Phylloscopus collybita, P. brehmii) in SW France and northern Spain. Mating was assortative in brehmii, but not in collybita. Mixed matings were strongly asymmetric (excess of callybita male x brehmii female pairs), but did produce viable offspring in some cases. Sequence divergence of the mitochondrial cytochrome b gene was 4.6%; Haplotypes segregated significantly with phenotype (only five 'mismatches' among 94 individuals), demonstrating that mitochondrial gene flow was very restricted. The estimated proportion of F-1 hybrids in the reproductive population was significantly lower than expected under a closed population... (More)
- Mating pattern and gene flow were studied in the contact zone between two morphologically very similar Chiffchaff taxa (Phylloscopus collybita, P. brehmii) in SW France and northern Spain. Mating was assortative in brehmii, but not in collybita. Mixed matings were strongly asymmetric (excess of callybita male x brehmii female pairs), but did produce viable offspring in some cases. Sequence divergence of the mitochondrial cytochrome b gene was 4.6%; Haplotypes segregated significantly with phenotype (only five 'mismatches' among 94 individuals), demonstrating that mitochondrial gene flow was very restricted. The estimated proportion of F-1 hybrids in the reproductive population was significantly lower than expected under a closed population model, indicating strong selection against hybrids. Genetic typing of 101 individuals at four microsatellite loci also showed significant population differentiation, but nuclear gene flow was estimated to be 75 times higher than mitochondrial gene flow. This strong discrepancy is probably due to unisexual hybrid sterility (Haldane's rule). Thus, there is a strong, but incomplete, reproductive barrier between these taxa. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/145754
- author
- Helbig, AJ ; Salomon, M ; Bensch, Staffan LU and Seibold, I
- organization
- publishing date
- 2001
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of evolutionary biology
- volume
- 14
- issue
- 2
- pages
- 277 - 287
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- scopus:0035059094
- ISSN
- 1420-9101
- DOI
- 10.1046/j.1420-9101.2001.00273.x
- language
- English
- LU publication?
- yes
- id
- 4e90a1e3-bb96-4c23-9573-a0920d6cc1e8 (old id 145754)
- date added to LUP
- 2016-04-01 11:46:16
- date last changed
- 2022-01-26 17:56:49
@article{4e90a1e3-bb96-4c23-9573-a0920d6cc1e8,
abstract = {{Mating pattern and gene flow were studied in the contact zone between two morphologically very similar Chiffchaff taxa (Phylloscopus collybita, P. brehmii) in SW France and northern Spain. Mating was assortative in brehmii, but not in collybita. Mixed matings were strongly asymmetric (excess of callybita male x brehmii female pairs), but did produce viable offspring in some cases. Sequence divergence of the mitochondrial cytochrome b gene was 4.6%; Haplotypes segregated significantly with phenotype (only five 'mismatches' among 94 individuals), demonstrating that mitochondrial gene flow was very restricted. The estimated proportion of F-1 hybrids in the reproductive population was significantly lower than expected under a closed population model, indicating strong selection against hybrids. Genetic typing of 101 individuals at four microsatellite loci also showed significant population differentiation, but nuclear gene flow was estimated to be 75 times higher than mitochondrial gene flow. This strong discrepancy is probably due to unisexual hybrid sterility (Haldane's rule). Thus, there is a strong, but incomplete, reproductive barrier between these taxa.}},
author = {{Helbig, AJ and Salomon, M and Bensch, Staffan and Seibold, I}},
issn = {{1420-9101}},
language = {{eng}},
number = {{2}},
pages = {{277--287}},
publisher = {{John Wiley & Sons Inc.}},
series = {{Journal of evolutionary biology}},
title = {{Male-biased gene flow across an avian hybrid zone: evidence from mitochondrial and microsatellite DNA}},
url = {{https://lup.lub.lu.se/search/files/2634136/625063.pdf}},
doi = {{10.1046/j.1420-9101.2001.00273.x}},
volume = {{14}},
year = {{2001}},
}