Intra-specific variability of hindlimb length in the palmate newt: an indicator of population isolation induced by habitat fragmentation?
Autor: | Olivier Calvez, Gilles Pottier, Laurent Barthe, Audrey Trochet, Hugo Le Chevalier, Alexandre Ribéron, Simon Blanchet, Boris Baillat |
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Přispěvatelé: | Station d'écologie théorique et expérimentale (SETE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD), Evolution et Diversité Biologique (EDB), Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Association des Naturalistes de l'Ariège (FRANCE) |
Jazyk: | angličtina |
Rok vydání: | 2016 |
Předmět: |
0106 biological sciences
0301 basic medicine Amphibian Male morphological intra-specific variability Lissotriton helveticus Conservation Biology [SDV]Life Sciences [q-bio] Hindlimb Biology Forests 010603 evolutionary biology 01 natural sciences Gene flow 03 medical and health sciences biology.animal Animals Selection Genetic Ponds dispersal Ecosystem Habitat fragmentation amphibians Ecology [SDV.BA]Life Sciences [q-bio]/Animal biology 15. Life on land biology.organism_classification Salamandridae Agricultural and Biological Sciences (miscellaneous) 030104 developmental biology Population isolation Habitat [SDE]Environmental Sciences road effects hindlimb length Biological dispersal Female France habitat fragmentation General Agricultural and Biological Sciences Locomotion |
Zdroj: | Biology Letters Biology Letters, Royal Society, The, 2016, 12 (4), pp.20160066. ⟨10.1098/rsbl.2016.0066⟩ |
ISSN: | 1744-9561 |
Popis: | 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. |
Databáze: | OpenAIRE |
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