Using heterozygosity-fitness correlations to study inbreeding depression in an isolated population of white-tailed deer founded by few individuals

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Brommer , J E , Kekkonen , J & Wikström , M 2015 , ' Using heterozygosity-fitness correlations to study inbreeding depression in an isolated population of white-tailed deer founded by few individuals ' , Ecology and Evolution , vol. 5 , no. 2 , pp. 357-367 . https://doi.org/10.1002/ece3.1362

Title: Using heterozygosity-fitness correlations to study inbreeding depression in an isolated population of white-tailed deer founded by few individuals
Author: Brommer, Jon E.; Kekkonen, Jaana; Wikström, Mikael
Contributor: University of Helsinki, University of Turku
University of Helsinki, Biosciences
Date: 2015-01
Language: eng
Number of pages: 11
Belongs to series: Ecology and Evolution
ISSN: 2045-7758
URI: http://hdl.handle.net/10138/162267
Abstract: A heterozygosity-fitness correlations (HFCs) may reflect inbreeding depression, but the extent to which they do so is debated. HFCs are particularly likely to occur after demographic disturbances such as population bottleneck or admixture. We here study HFC in an introduced and isolated ungulate population of white-tailed deer Odocoileus virginianus in Finland founded in 1934 by four individuals. A total of 4221-year-old white-tailed deer were collected in the 2012 hunting season in southern Finland and genotyped for 14 microsatellite loci. We find significant identity disequilibrium as estimated by g(2). Heterozygosity was positively associated with size- and age-corrected body mass, but not with jaw size or (in males) antler score. Because of the relatively high identity disequilibrium, heterozygosity of the marker panel explained 51% of variation in inbreeding. Inbreeding explained approximately 4% of the variation in body mass and is thus a minor, although significant source of variation in body mass in this population. The study of HFC is attractive for game- and conservation-oriented wildlife management because it presents an affordable and readily used approach for genetic monitoring that allowing identification of fitness costs associated with genetic substructuring in what may seem like a homogeneous population.
Subject: Cervid
heterozygosity
inbreeding
introduced population
microsatellite
population genetics
WIDE GENETIC DIVERSITY
RED DEER
MICROSATELLITE MARKERS
ODOCOILEUS-VIRGINIANUS
NATURAL-POPULATIONS
BREEDING SUCCESS
CERVUS-ELAPHUS
IDENTITY DISEQUILIBRIUM
EVOLUTIONARY RESPONSES
ANIMAL POPULATIONS
1181 Ecology, evolutionary biology
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