Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 416212
Title Spatial, ontogenetic and sexual effects on the diet of a Teiid lizard in arid South America
Author(s) Leeuwen, J.P. van; Catenazzi, A.; Holmgren, M.
Source Journal of Herpetology 45 (2011)4. - ISSN 0022-1511 - p. 472 - 477.
Department(s) Biometris (WU MAT)
Resource Ecology
Publication type Refereed Article in a scientific journal
Publication year 2011
Keyword(s) cnemidophorus-murinus - plant consumption - ctenosaura-pectinata - tree establishment - liolaemus-lutzae - body-size - herbivory - evolution - ecology - brazil
Abstract Most lizard species feed on small arthropods, and although some are omnivorous, only a few species are strict herbivores. We studied the diet of Dicrodon guttulatum, a teiid lizard endemic to the arid coastal deserts and dry forests of northern Peru. Herbivory by this lizard has been identified as a potential limiting factor in the regeneration of plant communities in these dry ecosystems. We collected gastric and fecal samples of adult males, adult females, and juveniles of D. guttulatum in different plant communities. Based on the ontogenetic shift from insectivory to herbivory observed in other herbivorous lizards, we hypothesized that juvenile D. guttulatum would have an omnivorous or insectivorous diet. We found D. guttulatum to be almost exclusively herbivorous (78–100%) and to feed largely (12–95%) on mesquite (Prosopis pallida) leaves and flowers across all plant communities and locations. Contrary to our predictions, there was a large overlap in diet between adult males and juveniles, whereas adult females were most likely to include plant species other than P. pallida in their diet. The consistency of herbivory in both juveniles and adults makes the origin of herbivory in D. guttulatum very interesting. We discuss potential factors promoting the evolution of herbivory in this species and the importance of lizard herbivory in the dry ecosystems of northern Peru.
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