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Intra-specific variability of hindlimb length in the palmate newt: an indicator of population isolation induced by habitat fragmentation?
Trochet, Audrey; Le Chevalier, Hugo; Baillat, Boris; Barthe, Laurent; Pottier, Gilles; Calvez, Olivier; Ribéron, Alexandre; Blanchet, Simon.
Afiliación
  • Trochet A; CNRS, Université Paul Sabatier, ENFA, UMR5174 EDB (Laboratoire Evolution et Diversité Biologique), 118 route de Narbonne, Toulouse 31062, France Station d'Ecologie Théorique et Expérimentale, UMR5321, Moulis 09200, France trochet.audrey@wanadoo.fr.
  • Le Chevalier H; CNRS, Université Paul Sabatier, ENFA, UMR5174 EDB (Laboratoire Evolution et Diversité Biologique), 118 route de Narbonne, Toulouse 31062, France.
  • Baillat B; Association des Naturalistes de l'Ariège, Conservatoire des Espaces Naturels et Centre Permanent d'Initiatives pour l'Environnement, Alzen 09240, France.
  • Barthe L; Association Nature Midi-Pyrénées, 14 rue de Tivoli, Toulouse 31068, France.
  • Pottier G; Association Nature Midi-Pyrénées, 14 rue de Tivoli, Toulouse 31068, France.
  • Calvez O; Station d'Ecologie Théorique et Expérimentale, UMR5321, Moulis 09200, France.
  • Ribéron A; CNRS, Université Paul Sabatier, ENFA, UMR5174 EDB (Laboratoire Evolution et Diversité Biologique), 118 route de Narbonne, Toulouse 31062, France.
  • Blanchet S; CNRS, Université Paul Sabatier, ENFA, UMR5174 EDB (Laboratoire Evolution et Diversité Biologique), 118 route de Narbonne, Toulouse 31062, France Station d'Ecologie Théorique et Expérimentale, UMR5321, Moulis 09200, France.
Biol Lett ; 12(4)2016 Apr.
Article en En | MEDLINE | ID: mdl-27122009
Habitat fragmentation is one of the main drivers of global amphibian decline. Anthropogenic landscape elements can act as barriers, hindering the dispersal that is essential for maintaining gene flow between populations. Dispersal ability can be influenced by locomotor performance, which in turn can depend on morphological traits, such as hindlimb length (HLL) in amphibians. Here, we tested relationships between HLL and environmental variables--road types, forests and agricultural lands--among 35 sub-populations of palmate newts (Lissotriton helveticus) in southwestern France. We expected roads to select for short-legged newts due to a higher mortality of more mobile individuals (long-legged newts) when crossing roads. Accordingly, short-legged newts were found in the vicinity of roads, whereas long-legged newts were found closer to forests and in ponds close geographically to another water body. HLL in newts was hence influenced by habitat types in a heterogeneous landscape, and could therefore be used as an indicator of population isolation in a meta-population system.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Salamandridae / Ecosistema / Miembro Posterior Límite: Animals País/Región como asunto: Europa Idioma: En Revista: Biol Lett Asunto de la revista: BIOLOGIA Año: 2016 Tipo del documento: Article País de afiliación: Francia Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Salamandridae / Ecosistema / Miembro Posterior Límite: Animals País/Región como asunto: Europa Idioma: En Revista: Biol Lett Asunto de la revista: BIOLOGIA Año: 2016 Tipo del documento: Article País de afiliación: Francia Pais de publicación: Reino Unido