Molecular and morphological insights into the origin of the invasive greater white-toothed shrew (Crocidura russula) in Ireland |
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| Authors: | Laura M. Gargan Raphaël Cornette Jon M. Yearsley W. Ian Montgomery Joana Paupério Paulo C. Alves Fidelma Butler Michel Pascal Anne Tresset Anthony Herrel John Lusby David G. Tosh Jeremy B. Searle Allan D. McDevitt |
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| Affiliation: | 1.School of Biology and Environmental Science,University College Dublin,Belfield, Dublin 4,Ireland;2.Institut de Systématique, évolution et Biodiversité,Centre National de la Recherche Scientifique/Muséum National d’Histoire Naturelle,Paris,France;3.School of Biological Sciences,Queen’s University Belfast,Belfast,Northern Ireland, UK;4.Institute of Global Food Security,Queen’s University Belfast,Belfast,Northern Ireland, UK;5.InBIO Laboratório Associado, CIBIO, Centro de Investiga??o em Biodiversidade e Recursos Genéticos,Universidade do Porto,Vair?o,Portugal;6.Departamento de Biologia,Faculdade de Ciências da Universidade do Porto,Porto,Portugal;7.Wildlife Biology Program, College of Forestry and Conservation,University of Montana,Missoula,USA;8.School of Biological, Earth and Environmental Sciences, Environmental Research Instiitute,University College Cork,Cork,Ireland;9.équipes Gestion des Populations Invasives, INRA,Station SCRIBE,Rennes Cedex,France;10.Archéozoologie et Archéobotanique, Sociétés, Pratiques et Environnements, Département d’Ecologie et Gestion de la Biodiversité,Centre National de la Recherche Scientifique/Muséum National d’Histoire Naturelle,Paris Cedex 5,France;11.Département d’Ecologie et de Gestion de la Biodiversité,Centre National de la Recherche Scientifique/Muséum National d’Histoire Naturelle,Paris Cedex 5,France;12.Evolutionary Morphology of Vertebrates,Ghent University,Ghent,Belgium;13.Birdwatch Ireland, Midlands Office,Banagher, Co. Offaly,Ireland;14.Quercus, School of Biological Sciences,Queen’s University Belfast,Belfast,Northern Ireland, UK;15.Department of Ecology and Evolution, Corson Hall,Cornell University,Ithaca,USA;16.School of Environment and Life Sciences,University of Salford,Salford,UK |
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| Abstract: | ![]()
Identifying routes of invasion is a critical management strategy in controlling the spread of invasive species. This is challenging however in the absence of direct evidence. Therefore, indirect methodologies are used to infer possible invasion sources and routes, such as comparisons of genetic and morphological data from populations from invasive ranges and putative source areas. The greater white-toothed shrew (Crocidura russula) was first discovered in Ireland from skeletal remains in the pellets of birds of prey collected in 2007 and is it is now sufficiently established that the species has a detrimental impact on Ireland’s small mammal community. In this study, we address the uncertain origin(s) of the Irish population of C. russula. The cytochrome b gene of mitochondrial DNA was analysed from 143 individuals from throughout its range within a phylogenetic and approximate Bayesian computation framework. These analyses revealed that the Irish population stemmed from Europe as opposed to North Africa. Additionally, mandibles from 523 individuals from Ireland and 28 other European populations were subjected to multivariate and distance-based analyses, which demonstrated an association between the Irish population and those in France, Switzerland and Belgium. When the genetic and morphological analyses were considered together, an origin stemming from France was deemed the most likely scenario for the source of the invasive Irish population. This study has demonstrated the importance of utilising a multidisciplinary approach when attempting to identify the origins and invasion routes of invasive species. |
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