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Where are the wormy mice? A re-examination of hybrid parasitism in the European house mouse hybrid zone

SYSNO ASEP	0375980
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Where are the wormy mice? A re-examination of hybrid parasitism in the European house mouse hybrid zone
Author(s)	Baird, Stuart J. E. (UBO-W)_{RID, ORCID, SAI} Ribas, Alexis (UBO-W)_{ORCID, SAI} Macholán, Miloš (UZFG-Y)_{RID, ORCID} Albrecht, Tomáš (UBO-W)_{RID, SAI, ORCID} Piálek, Jaroslav (UBO-W)_{RID, ORCID, SAI} Goüy de Bellocq, Joëlle (UBO-W)_{RID, ORCID, SAI, SAI}
Number of authors	6
Source Title	Evolution. - : Wiley - ISSN 0014-3820 Roč. 66, č. 9 (2012), s. 2757-2772
Number of pages	16 s.
Language	eng - English
Country	US - United States
Keywords	helminths ; Mus musculus domesticus ; Mus musculus musculus ; resistance ; immune gene transitive compatibility
Subject RIV	EG - Zoology
R&D Projects	GA206/08/0640 GA ČR - Czech Science Foundation (CSF)
Institutional support	UBO-W - RVO:68081766 ; UZFG-Y - RVO:67985904
UT WOS	000308405100008
EID SCOPUS	84865804370
DOI	10.1111/j.1558-5646.2012.01633.x
Annotation	Wormy mice in a hybrid zone have been interpreted as evidence of low hybrid fitness, such that parasites contribute to species separation. However, because of its natural heterogeneity, observations of parasite load must be numerous with good field area coverage. We sampled 689 mice from 107 localities across the Bavaria-Bohemia region of the European house mouse hybrid zone and calculated their hybrid indices using 1401 diagnostic SNPs. We tested whether hybrids have greater or lesser diversity and load of parasite helminths than additive expectations, performing load analyses on the four most common taxa. We found hybrids have significantly reduced diversity and load of each of the commonest helminths; rarer helminths further support reduced load. While within-locality comparisons have little power, randomisation tests show the repeated pattern is unlikely to be due to local parasite heterogeneity, and simulations show a patch of low parasite diversity is unlikely to fall by chance just so in the field area, such that it produces the observed effects. Our data therefore contradict the idea that helminths reduce hybrid fitness through increased load. We discuss a vicariant Red Queen model that implies immune genes tracking parasites will escape Dobzhansky-Muller incompatibilities, generating hybrid variants untargeted by parasites.
Workplace	Institute of Vertebrate Biology
Contact	Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524
Year of Publishing	2013

Number of the records: 1