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@article{965608,
author = {Říčanová, Štěpánka and Bryja, Josef and Cosson, Jean Francois and Gedeon, Csongor and Choleva, Lukáš and Ambros, Michal and Sedláček, František},
article_location = {Netherlands},
article_number = {1},
doi = {http://dx.doi.org/10.1007/s10592-011-0213-1},
keywords = {Souslik; Endangered species; Sciuridae; Habitat fragmentation; DRB; MHC Class II},
language = {eng},
issn = {1566-0621},
journal = {Conservation Genetics},
title = {Depleted genetic variation of the European ground squirrel in Central Europe in both microsatellites and the major histocompatibility complex gene: implications for conservation},
volume = {12/2011},
year = {2011}
}
TY - JOUR
ID - 965608
AU - Říčanová, Štěpánka - Bryja, Josef - Cosson, Jean Francois - Gedeon, Csongor - Choleva, Lukáš - Ambros, Michal - Sedláček, František
PY - 2011
TI - Depleted genetic variation of the European ground squirrel in Central Europe in both microsatellites and the major histocompatibility complex gene: implications for conservation
JF - Conservation Genetics
VL - 12/2011
IS - 1
SP - 1115-1129
EP - 1115-1129
PB - Springer
SN - 15660621
KW - Souslik
KW - Endangered species
KW - Sciuridae
KW - Habitat fragmentation
KW - DRB
KW - MHC Class II
N2 - Habitat fragmentation may influence the genetic make-up and adaptability of endangered populations. To facilitate genetic monitoring of the endangered European ground squirrel (EGS), we analyzed 382 individuals from 16 populations in Central Europe, covering almost half of its natural range. We tested how fragmentation affects the genetic architecture of presumably selectively neutral (12 microsatellites) and non-neutral (the major histocompatibility class II DRB gene) loci. Spatial genetic analyses defined two groups of populations, ‘‘western’’ and ‘‘eastern’’, with a significantly higher level of habitat fragmentation in the former group. The highly fragmented western populations had significantly lower genetic diversity in both types of markers. Only one allele of the DRB gene predominated in populations of the western group, while four alleles were evenly distributed across the eastern populations. Coefficient of inbreeding values (FIS) calculated from microsatellites were significantly higher in the western (0.27–0.79) than in eastern populations (-0.060–0.119). Inter-population differentiation was very high, but similar in both groups (western FST = 0.23, eastern FST = 0.25). The test of isolation by distance was significant for the whole dataset, as well as for the two groups analyzed separately. Comparison of genetic variability and structure on microsatellites and the DRB gene does not provide any evidence for contemporary selection on MHC genes. We suggest that genetic drift in small bottlenecked and fragmented populations may overact the role of balancing selection. Based on the resulting risk of inbreeding depression in the western populations, we support population management by crossbreeding between the western and eastern populations.
ER -
ŘÍČANOVÁ, Štěpánka, Josef BRYJA, Jean Francois COSSON, Csongor GEDEON, Lukáš CHOLEVA, Michal AMBROS a František SEDLÁČEK. Depleted genetic variation of the European ground squirrel in Central Europe in both microsatellites and the major histocompatibility complex gene: implications for conservation. \textit{Conservation Genetics}. Netherlands: Springer, 2011, roč.~12/2011, č.~1, s.~1115-1129. ISSN~1566-0621. Dostupné z: https://dx.doi.org/10.1007/s10592-011-0213-1.
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