Does hybridisation with an invasive species threaten Europe’s most endangered reptile? Genomic assessment of Aeolian lizards on Vulcano island
Does hybridisation with an invasive species threaten Europe’s most endangered reptile? Genomic assessment of Aeolian lizards on Vulcano island
Abstract Interspecific hybridisation can be consequential for rare and insular endemic species. The Critically Endangered Aeolian wall lizard, Podarcis raffonei, severely declined due to interactions with the invasive Italian wall lizard, Podarcis siculus. The largest population of P. raffonei survives on a narrow peninsula (Capo Grosso) that is mildly connected to the island of Vulcano, which has been entirely invaded by P. siculus. Recent observation of individuals with an intermediate phenotype raised concern over the risk that hybridisation might swamp this last stronghold. We genetically characterised lizards from Vulcano using genome-wide SNPs, considering individuals showing multiple phenotypes (native, invasive, and “intermediate”). Hybridisation rate was low (～3%), with just two F1 hybrids and two backcrosses. However, pure P. raffonei showed extremely low genetic diversity, a very small effective population size, and a low NE/NC ratio. Management strategies are urgently needed to control invasive species and maintain the genetic diversity of P. raffonei.
Carretero Miguel Angel、Obiol Joan Ferrer、Salvi Daniele、Rocha Iolanda Silva-、Ficetola Gentile Francesco、Paris Josephine R
CIBIO, Centro de Investiga??o em Biodiversidade e Recursos Gen¨|ticos, Universidade do Porto, InBio Laboratorio Associado||Departamento de Biologia, Faculdade de Ci¨oncias da Universidade do Porto||BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vair?oDepartment of Environmental Science and Policy, University of MilanDepartment of Health, Life and Environmental Sciences, University of L?ˉAquilaCIBIO, Centro de Investiga??o em Biodiversidade e Recursos Gen¨|ticos, Universidade do Porto, InBio Laboratorio AssociadoDepartment of Environmental Science and Policy, University of Milan||Universit¨| Grenoble Alpes, Universit¨| Savoie Mont Blanc, CNRS, Laboratoire d?ˉEcologie Alpine (LECA)Department of Health, Life and Environmental Sciences, University of L?ˉAquila||Department of Life and Environmental Sciences, Marche Polytechnic University
环境生物学动物学生物科学现状、生物科学发展
endangeredendemichybridisationislandslizardsPodarcis raffoneiPodarcis siculusRADseq
Carretero Miguel Angel,Obiol Joan Ferrer,Salvi Daniele,Rocha Iolanda Silva-,Ficetola Gentile Francesco,Paris Josephine R.Does hybridisation with an invasive species threaten Europe’s most endangered reptile? Genomic assessment of Aeolian lizards on Vulcano island[EB/OL].(2025-03-28)[2025-05-10].https://www.biorxiv.org/content/10.1101/2024.04.12.589112.点此复制
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