Aspects of cannibalistic morphs in a population of Ambystoma t. tigrinum larvae.

M. J. Lannoo, M. D. Bachmann

Research output: Contribution to journalArticle

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Abstract

The study population, located in NW Iowa, represents the first instance of larval cannibalistic morphs in the subspecies A.t. tigrinum and the NE limit of cannibalistic morphs in the A. tigrinum complex. A comparison of food habits of typical larvae in 1980, when the cannibalistic morph was absent, with 1981, when the morph was present, shows no basic differences. Because 1981 was a drought year and the study ponds were drying, data support the argument that density, not food, affects the expression of cannibalistic morph traits. Cannibalistic morphs grew much faster than typical larvae. If metamorphosis is size-dependent, cannibalistic morphs should have a higher survivorship under drying-marsh conditions. -from Authors

Original languageEnglish (US)
Pages (from-to)103-109
Number of pages7
JournalAmerican Midland Naturalist
Volume112
Issue number1
DOIs
StatePublished - Jan 1 1984

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ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

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