Detailed Information on Publication Record
2011
Depleted genetic variation of the European ground squirrel in Central Europe in both microsatellites and the major histocompatibility complex gene: implications for conservation
ŘÍČANOVÁ, Štěpánka, Josef BRYJA, Jean Francois COSSON, Csongor GEDEON, Lukáš CHOLEVA et. al.Basic information
Original name
Depleted genetic variation of the European ground squirrel in Central Europe in both microsatellites and the major histocompatibility complex gene: implications for conservation
Name in Czech
Depleted genetic variation of the European ground squirrel in Central Europe in both microsatellites and the major histocompatibility complex gene: implications for conservation
Authors
ŘÍČANOVÁ, Štěpánka (203 Czech Republic), Josef BRYJA (203 Czech Republic, guarantor, belonging to the institution), Jean Francois COSSON (250 France), Csongor GEDEON (348 Hungary), Lukáš CHOLEVA (203 Czech Republic), Michal AMBROS (703 Slovakia) and František SEDLÁČEK (203 Czech Republic, belonging to the institution)
Edition
Conservation Genetics, Netherlands, Springer, 2011, 1566-0621
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10600 1.6 Biological sciences
Country of publisher
Czech Republic
Confidentiality degree
není předmětem státního či obchodního tajemství
Impact factor
Impact factor: 1.610
RIV identification code
RIV/00216224:14310/11:00054809
Organization unit
Faculty of Science
UT WoS
000292880800021
Keywords (in Czech)
Souslik; Endangered species; Sciuridae; Habitat fragmentation; DRB; MHC Class II
Keywords in English
Souslik; Endangered species; Sciuridae; Habitat fragmentation; DRB; MHC Class II
Změněno: 10/1/2012 18:08, doc. RNDr. Zdeněk Řehák, Ph.D.
V originále
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.
In Czech
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.
Links
| MSM0021622416, plan (intention) |
|