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Predation upon reptiles in Mediterranean habitats of Chile, Spain and California: A comparative analysis

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Summary

Pradation on reptiles at three Mediterranean-type habitat sites was assessed by computing the incidence of reptiles as a percentage of vertebrates in the diet of each predator species and the incidence of each reptile species as prey for the entire assemblage of predators at each locality. The overall importance of reptiles is lowest in Chile, intermediate in California, and highest in Spain. These differences do not appear to result from interlocality variation in the size distributions of predators or of prey. The incidence of particular reptile species as prey is correlated with their relative abundances in Spain and California, but not in Chile. Behavioral and morphological attributes evidently make some species more vulnerable to predation and others less so than their abundances would predict. Predation on the speciose lizard genus Liolaemus in Chile is sufficient to promote behavioral responses but not major morphological divergence.

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Jaksić, F.M., Greene, H.W., Schwenk, K. et al. Predation upon reptiles in Mediterranean habitats of Chile, Spain and California: A comparative analysis. Oecologia 53, 152–159 (1982). https://doi.org/10.1007/BF00545658

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