A Bocage Landscape Restricts the Gene Flow of Pest Vole Populations
Somoano, Aitor (Servicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA))
Bastos-Silveira, Cristiane (Universidade de Lisboa. Centro de Ecologia, Evolução e Alterações Ambientais)
Ventura Queija, Jacinto (Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia)
Miñarro, Marcos (Servicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA))
Heckel, Gerald (University of Bern. Institute of Ecology and Evolution)

Fecha:	2022
Resumen:	The population dynamics of most animal species inhabiting agro-ecosystems may be determined by landscape characteristics, with agricultural intensification and the reduction of natural habitats influencing dispersal and hence limiting gene flow. Increasing landscape complexity would thus benefit many endangered species by providing different ecological niches, but it could also lead to undesired effects in species that can act as crop pests and disease reservoirs. We tested the hypothesis that a highly variegated landscape influences patterns of genetic structure in agricultural pest voles. Ten populations of fossorial water vole, Arvicola scherman, located in a bocage landscape in Atlantic NW Spain were studied using DNA microsatellite markers and a graph-based model. The results showed a strong isolation-by-distance pattern with a significant genetic correlation at smaller geographic scales, while genetic differentiation at larger geographic scales indicated a hierarchical pattern of up to eight genetic clusters. A metapopulation-type structure was observed, immersed in a landscape with a low proportion of suitable habitats. Matrix scale rather than matrix heterogeneity per se may have an important effect upon gene flow, acting as a demographic sink. The identification of sub-populations, considered to be independent management units, allows the establishment of feasible population control efforts in this area. These insights support the use of agro-ecological tools aimed at recreating enclosed field systems when planning integrated managements for controlling patch-dependent species such as grassland voles.
Ayudas:	Ministerio de Economía y Competitividad RTA2013-00039-C03-01 Ministerio de Economía, Industria y Competitividad RTA2017-00051-C02-01
Derechos:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió publicada
Materia:	Arvicola scherman ; Variegated agricultural landscape ; Cluster structuring ; Gene flow ; Graph-based model ; Isolation-by-distance ; Landscape genetics ; Population structure
Publicado en:	Life, Vol. 12, Issue 6 (June 2022) , art. 800, ISSN 2075-1729

DOI: 10.3390/life12060800
PMID: 35743831

16 p, 2.7 MB

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