期刊
EVOLUTIONARY APPLICATIONS
卷 7, 期 7, 页码 734-749出版社
WILEY
DOI: 10.1111/eva.12161
关键词
dispersal; genetic relatedness; isolation by resistance; Mephitis mephitis; multiple regression on distance matrices; Procyon lotor; raccoon rabies variant; striped skunk
资金
- Fonds de Recherche du Quebec - Nature et Technologies (FRQNT)
- Canada Research Chair in Evolutionary Demography and Conservation from the Canada Foundation for Innovation
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- FRQNT
- Quebec Center for Biodiversity Science (QCBS)
Predicting the geographic spread of wildlife epidemics requires knowledge about the movement patterns of disease hosts or vectors. The field of landscape genetics provides valuable approaches to study dispersal indirectly, which in turn may be used to understand patterns of disease spread. Here, we applied landscape genetic analyses and spatially explicit models to identify the potential path of raccoon rabies spread in a mesocarnivore community. We used relatedness estimates derived from microsatellite genotypes of raccoons and striped skunks to investigate their dispersal patterns in a heterogeneous landscape composed predominantly of agricultural, forested and residential areas. Samples were collected in an area covering 22000km2 in southern Quebec, where the raccoon rabies variant (RRV) was first detected in 2006. Multiple regressions on distance matrices revealed that genetic distance among male raccoons was strictly a function of geographic distance, while dispersal in female raccoons was significantly reduced by the presence of agricultural fields. In skunks, our results suggested that dispersal is increased in edge habitats between fields and forest fragments in both males and females. Resistance modelling allowed us to identify likely dispersal corridors used by these two rabies hosts, which may prove especially helpful for surveillance and control (e.g. oral vaccination) activities.
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