4.5 Article

Assessment of drivers of spatial genetic variation of a ground-dwelling bird species and its implications for conservation

期刊

ECOLOGY AND EVOLUTION
卷 12, 期 1, 页码 -

出版社

WILEY
DOI: 10.1002/ece3.8460

关键词

conservation genetics; ecological niche modeling; isolation by distance; isolation by resistance; Lyrurus tetrix; maximum likelihood population effects (MLPE) models

资金

  1. government of Styria (Department of Energy, Residential Building and Technic)
  2. Styrian hunting association
  3. Slovak Scientific Grant Agency VEGA [1/0328/22]
  4. government of Styria (Deparment for Agriculture and Forestry)

向作者/读者索取更多资源

The study investigated whether the genetic pattern of the easternmost Alpine black grouse metapopulation system is driven by isolation by distance or isolation by resistance. Spatial genetic variation could be attributed to effects of isolation by distance among individuals and isolation by resistance among subpopulations, yet unknown effects might factor in.
In modern wildlife ecology, spatial population genetic methods are becoming increasingly applied. Especially for animal species in fragmented landscapes, preservation of gene flow becomes a high priority target in order to restore genetic diversity and prevent local extinction. Within Central Europe, the Alps represent the core distribution area of the black grouse, Lyrurus tetrix. At its easternmost Alpine range, events of subpopulation extinction have already been documented in the past decades. Molecular data combined with spatial analyses can help to assess landscape effects on genetic variation and therefore can be informative for conservation management. Here, we addressed whether the genetic pattern of the easternmost Alpine black grouse metapopulation system is driven by isolation by distance or isolation by resistance. Correlative ecological niche modeling was used to assess geographic distances and landscape resistances. We then applied regression-based approaches combined with population genetic analyses based on microsatellite data to disentangle effects of isolation by distance and isolation by resistance among individuals and subpopulations. Although population genetic analyses revealed overall low levels of genetic differentiation, the ecological niche modeling showed subpopulations to be clearly delimited by habitat structures. Spatial genetic variation could be attributed to effects of isolation by distance among individuals and isolation by resistance among subpopulations, yet unknown effects might factor in. The easternmost subpopulation was the most differentiated, and at the same time, immigration was not detected; hence, its long-term survival might be threatened. Our study provides valuable insights into the spatial genetic variation of this small-scale metapopulation system of Alpine black grouse.

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