The British Herpetological Society

The Herpetological Journal is the Society's prestigious quarterly scientific journal. Articles are listed in Biological Abstracts, Current Awareness in Biological Sciences,Current Contents, Science Citation Index, and Zoological Record.

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pdf 07. Among-population differences in the frequency of intraspecific oophagy in the sword-tailed newt, Cynops ensicauda popei

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Open Access

pp. 263-265
Authors: Katayama, Motoki

Abstract: The interplay between cannibalism and life-history traits is still poorly understood. This study investigates the relationships between sex, snout–vent length and the amount of ingested conspecific eggs in three populations of sword-tailed newts, Cynops ensicauda popei. The mean number of ingested eggs found per individual was 0.13, 0.22 and 0.31 depending on the population, and females were more cannibalistic than males. Mean body size was negatively related to the mass of ingested conspecific eggs, and positively related to the total number of prey items found. Taken together, this study suggests that the amount of cannibalism is primarily influenced by prey availability and body size.

Keywords: EGG PREDATION, CANNIBALISM, FOOD QUALITY, PREY AVAILABILITY

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