Alien lymnaeid snails in the Western Mediterranean basin: new invaders and trematode-transmitters in the region?

• Autores: Alba Menendez, Annia; Douchet, Philippe; Rey, Olivier; Faugère, Dominique; Lopez Soriano, Joaquin; Quiñonero Salgado, Sergio; Alda, Maria del Pilar; Langand, Juliette; Bonel, Nicolás; Pointier, Jean Pierre; Hurtrez Boussès, Sylvie; Gourbal, Benjamin; Vázquez, Antonio A.
• Año de publicación: 2024
• Idioma: inglés
• Tipo de recurso: documento de conferencia
• Materia: LYMNAEID; AQUATIC SNAILS; ALIEN SPECIES; BIOLOGICAL INVASIONS; TREMATODES; WESTERN MEDITERRANEAN BASIN
• Institución: Consejo Nacional de Investigaciones Científicas y Técnicas

Biological invasions have the potential to foster the emergence of diseases, either through geographic spread or adaptive evolution. In the Western Mediterranean basin, two non-native snails have been introduced: the American Pseudosuccinea columella, to Aquitania and Corsica (France), and the Asian Orientogalba viridis, to Spanish Catalunya. Both play significant roles in transmitting the liver fluke Fasciola hepatica (Trematoda) elsewhere. This zoonotic emerging parasite circulates endemically in Europe within livestock, facilitated by a single vector species, the local snail Galba truncatula. Here, we aim to address four crucial questions: (i) Have the introduced exotic snails established and spread throughout the region? (ii) What are their ecological patterns in comparison to the local vector snail? (iii)What is their population genetic structure, and what is their history of invasion? (iv) Are they compatible with and capable of transmitting local parasites? Spatial surveys conducted within the Catalunya/Occitania region, alongside field ecology, were complemented with COI sequencing, microsatellite genotyping, and trematode metabarcoding analyses. Furthermore, laboratory populations were established to evaluate experimental compatibility with local parasites. The successful establishment of a COI haplotype of O. viridis, closely related to a Malaysian haplotype, is patented within the Ebro delta. Of particular concern is the spread of the globally invasive genotype of P. columella, known for its high compatibility with F. hepatica, in Occitania. This spread is primarily associated with hydrographic systems connected to the Canal Latéral de la Garonne/Canal du Midi. However, multiple introduction events may have occurred, as populations of these species are also documented in distant and non-connected artificial habitats, suggesting the existence of high propagule pressures. Both species exhibited high compatibility with local isolates of F. hepatica (70-100%). This comprehensive study provides a thorough overview of the invasion history and the associated risks of parasite transmission in the region driven by these exotic snails.
Fil: Alba Menendez, Annia. Université Montpellier II; Francia. Institut ExposUM; Francia
Fil: Douchet, Philippe. Université Montpellier II; Francia
Fil: Rey, Olivier. Université de Perpignan; Francia
Fil: Faugère, Dominique. Institut de la Recherche Pour Le Developpement; Francia
Fil: Lopez Soriano, Joaquin. Associación Catalana de Malacología; España
Fil: Quiñonero Salgado, Sergio. Associación Catalana de Malacología; España
Fil: Alda, Maria del Pilar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina
Fil: Langand, Juliette. Université de Perpignan; Francia
Fil: Bonel, Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina
Fil: Pointier, Jean Pierre. Université de Perpignan; Francia
Fil: Hurtrez Boussès, Sylvie. Institut de la Recherche Pour Le Developpement; Francia
Fil: Gourbal, Benjamin. Université de Perpignan; Francia
Fil: Vázquez, Antonio A.. Université de Perpignan; Francia
23rd European Society 46 for Vector Ecology Conference
Montpellier
Francia
Vectopole Sud
Society for Vector Ecology