Using relatedness networks to infer contemporary dispersal: application to the endangered mammal Galemys pyrenaicus
Escoda, L.; González-Esteban, J.; Gómez, A.; Castresana, J. (2017)
Molecular Ecology 26, 3343-3357. doi: 10.1111/mec.14133
The Pyrenean desman (Galemys pyrenaicus) is a small semi-aquatic mammal endemic to the Iberian Peninsula certain populations of which are endangered. Partial genomic information obtained from a population inhabiting several rivers of the Iberian System enabled some crucial parameters to be inferred for studying the genetic health of the desmans, such as relatedness and inbreeding, as well as relatedness networks that offer information on contemporary dispersal. The results revealed low connectivity between rivers and a significant effect of some river barriers on inbreeding. These data can help design conservation plans aimed at improving connectivity between populations, one of the biggest problems of this species.
Map plotting relatedness networks of Pyrenean desman specimens of the Iberian System. In this plot, curved lines (edges) connect specimens (nodes) for which a relationship was found, and the thickness of edges is proportional to the relatedness value of the connected specimens