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Disponibilidad y uso de recursos tróficos por Lacerta schreiberi y Podarcis bocagei en simpatría en una localidad de la Cordillera Cantábrica, España

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image of Amphibia-Reptilia

Food availability and diet composition were examined in sympatric populations of Lacerta schreiberi and Podarcis bocagei at a locality in the Cantabrian mountains (province of León, Spain). Neither species uses trophic resources in proportion to their relative abundance. Extensive overlap in diet composition has been found between P. bocagei and juvenile L. schreiberi. Although both species feed mainly on spiders, juvenile L. schreiberi eat the most abundant and P. bocagei select larger prey sizes. Subadult and adult L. schreiberi select beetles and grasshoppers.

Affiliations: 1: Departamento de Biología Animal, Facultad de Biología, Universidad de León, 24071 León, España; 2: Museo Nacional de Ciencias Naturales, c/ José Gutiérrez Abascal, 2, 28006 Madrid, España


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