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Asymmetric size and shape variation in the Central European transect across the house mouse hybrid zone

SYSNO ASEP	0357736
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Asymmetric size and shape variation in the Central European transect across the house mouse hybrid zone
Author(s)	Mikula, Ondřej (UZFG-Y)_{RID, ORCID} Auffray, J.C. (FR) Macholán, Miloš (UZFG-Y)_{RID, ORCID}
Source Title	Biological Journal of the Linnean Society. - : Oxford University Press - ISSN 0024-4066 Roč. 101, - (2010), s. 13-27
Number of pages	15 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	asymmetric variation ; developmental instability ; fluctuating asymmetry
Subject RIV	EG - Zoology
R&D Projects	GA206/06/0707 GA ČR - Czech Science Foundation (CSF)
	GA206/08/0640 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z50450515 - UZFG-Y (2005-2011)
UT WOS	000281210500002
Annotation	We studied asymmetric variation of the mandible in the Central European portion of the hybrid zone between two house mouse subspecies, Mus musculus musculus and Mus musculus domesticus. Within introgression classes, defined by the share of diagnostic allozymes, we quantified the directional and fluctuating component of asymmetric variation, as well as skewness and kurtosis of individual asymmetry distributions. Furthermore, in the same manner we re-analysed asymmetric variation of the ventral side of the skull. According to the quadratic polynomial model, the mandible shape-fluctuating asymmetry, but not size-fluctuating asymmetry, was significantly decreased in the centre of the hybrid zone (with a minimum predicted for a hybrid index of 0.41). On the contrary, the skull shape-fluctuating asymmetry non-monotonically increased towards the musculus side of the hybrid zone (with a peak predicted for a hybrid index of 0.86). Thus, the impact of hybridization on fluctuating asymmetry is trait-specific in this portion of the house mouse hybrid zone. The only general feature of asymmetric variation we observed was the shift towards the platykurtosis of asymmetry distributions in the centre of the hybrid zone. Taken together, we suggest genetic variability for right–left asymmetries to be generally increased, but the developmental instability of mandible shape to be decreased, by hybridization. We hypothesize the decrease of developmental instability to be caused by overdominant effects on developmental dynamics rather than by increased heterozygosi
Workplace	Institute of Animal Physiology and Genetics
Contact	Jana Zásmětová, knihovna@iapg.cas.cz, Tel.: 315 639 554
Year of Publishing	2011

Number of the records: 1