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  New(t)s and views from hybridizing MHC genes: introgression rather than trans-species polymorphism may shape allelic repertoires

Wegner, K. M., & Eizaguirre, C. (2012). New(t)s and views from hybridizing MHC genes: introgression rather than trans-species polymorphism may shape allelic repertoires. Molecular Ecology, 21(4), 779-781. doi:10.1111/j.1365-294X.2011.05401.x.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-D332-1 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-D334-E
Genre: Journal Article

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j.1365-294X.2011.05401.x.pdf (Publisher version), 181KB
 
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Wegner, K. Mathias1, Author              
Eizaguirre, Christophe1, Author              
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1Department Evolutionary Ecology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_1445634              

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Free keywords: adaptation; amphibians; host parasite interactions; hybridization
 Abstract: One of the key features of major histocompatibility complex (MHC) genes is the frequent occurrence of transspecies polymorphism, that is ‘the passage of allelic lineages from ancestral to descendant species’ (Klein et al. 2007). Selectively maintained ancestral polymorphism may, however, be hard to distinguish from introgression of MHC alleles between hybridizing species (Fig. 1). In this issue of Molecular Ecology, Nadachowska-Brzyska et al. (2012) present data that suggest that the latter can be observed in two closely related species of newts, Lissotriton vulgaris (Lv) and L. montandoni (Lm) from south-east Europe. Strikingly, allelic MHC variation displayed more structure between geographically separated populations of L. vulgaris than across species in the hybrid zone. This suggests that high MHC variation in L. montadoni may result from mainly unidirectional gene flow between species, while differentiation between northern and southern populations of L. vulgaris might reflect local adaptation.

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Language(s): eng - English
 Dates: 2012-02
 Publication Status: Published in print
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 Identifiers: eDoc: 582132
DOI: 10.1111/j.1365-294X.2011.05401.x
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Title: Molecular Ecology
Source Genre: Journal
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Pages: - Volume / Issue: 21 (4) Sequence Number: - Start / End Page: 779 - 781 Identifier: ISSN: 0962-1083 (print)
ISSN: 1365-294X (online)