A genetic isolation gradient of populations of the Balearic green toad (Bufo balearicus) follows rising eastward fragmentation of the rural landscapes on the island of Menorca.

Détails

ID Serval
serval:BIB_7B16DB6AC077
Type
Actes de conférence (partie): contribution originale à la littérature scientifique, publiée à l'occasion de conférences scientifiques, dans un ouvrage de compte-rendu (proceedings), ou dans l'édition spéciale d'un journal reconnu (conference proceedings).
Collection
Publications
Titre
A genetic isolation gradient of populations of the Balearic green toad (Bufo balearicus) follows rising eastward fragmentation of the rural landscapes on the island of Menorca.
Titre de la conférence
International Conference on Mediterranean Temporary Ponds : Proceedings & Abstracts
Auteur(s)
Massana M., Riechter-Boix A., Colliard C., Pretus J.L.
Editeur
Institut Menorquí d'Estudis
Organisation
Congrés internacional Maó, del 5 al 8 de maig
Adresse
Maó
ISBN
978-84-9571-72-3
ISSN-L
1130-6149
Statut éditorial
Publié
Date de publication
2009
Editeur scientifique
Fraga i Arguimbau Pere
Volume
14
Série
Recerca
Pages
267-277
Langue
anglais
Résumé
We present the first approach to the genetic diversity and structure of the Balearic toad (Bufo balearicus Boettger, 1880) for the island of Menorca. Forty-one individ- uals from 21 localities were analyzed for ten microsatellite loci. We used geo-refer- enced individual multilocus genotypes and a model-based clustering method for the inference of the number of populations and of the spatial location of genetic dis- continuities between those populations.¦Only six of the microsatellites analyzed were polymorphic. We revealed a northwest- ern area inhabited by a single population with several well-connected localities and another set of populations in the southeast that includes a few unconnected small units with genetically significant differences among them as well as with the individ- uals from the northwest of the island. The observed fragmentation may be explained by shifts from agricultural to tourism practices that have been taking place on the island of Menorca since the 1960s. The abandonment of rural activities in favor of urbanization and concomitant service areas has mostly affected the southeast of the island and is currently threatening the overall geographic connectivity between the different farming areas of the island that are inhabited by the Balearic toad.
Mots-clé
Bufo balearicus, microsatellites, landscape genetics, habitat fragmentation
Création de la notice
14/09/2009 15:03
Dernière modification de la notice
20/08/2019 14:37
Données d'usage