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Interspecific and intersexual variation in presacral vertebrae number in Podarcis bocagei and P. carbonelli

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Podarcis bocagei and P. carbonelli are two closely related lizard species, endemic to the western Iberian Peninsula. Although genetic and morphological distinction between them is now well established, information on anatomical features is still very restricted. We studied presacral vertebrae number in both species, separately examining cervical and trunk vertebrae counts, in order to assess the interspecific and intersexual variation in these characters. There was no significant interspecific variation among lizards of the same sex for any of the vertebrae counts studied. However, important sexual variation existed, females presenting higher counts than males for both trunk and total presacral vertebrae, while males showed higher values of cervical vertebrae. Although our results lie within the known limits for other closely related species, they reveal that vertebrae number might present higher intraspecific variation than previously thought.

Affiliations: 1: Departament de Biologia Animal (Vertebrats), Facultat de Biologia, Universitat de Barcelona, Avgda. Diagonal, 645, 08028 Barcelona, Spain, CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Campus Agrário de Vairão, 4485-661 Vairão, Portugal;, Email: antigoni@mail.icav.up.pt; 2: CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Campus Agrário de Vairão, 4485-661 Vairão, Portugal; 3: Departament de Biologia Animal (Vertebrats), Facultat de Biologia, Universitat de Barcelona, Avgda. Diagonal, 645, 08028 Barcelona, Spain

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/content/journals/10.1163/156853808784125018
2008-05-01
2016-12-10

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