Life-history responses to pathogens in tiger salamander (Ambystoma tigrinum) larvae

Matthew J. Parris, Andrew Storfer, James Collins, Elizabeth W. Davidson

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

We tested whether the presence of an iridovirus (Ambystoma tigrinum virus; ATV) could alter patterns of larval life histories in Arizona Tiger Salamanders (Ambystoma tigrinum nebulosum). Viral epidemics cause extreme mortality in natural populations and, thus, impose a strong selective force. We tested how exposure to ATV during larval development influences survival, growth, and frequency of cannibalism by manipulating the presence of ATV in replicated experimental tanks. ATV significantly reduced survival and larval growth. Propensity to become cannibalistic was not related to ATV exposure, suggesting that salamanders cannot facultatively respond to the presence of diseased conspecifics by reducing cannibalism. Our results demonstrate that viral pathogens may have both a direct and indirect effect on A. tigrinum fitness by reducing survival and growth rate.

Original languageEnglish (US)
Pages (from-to)366-372
Number of pages7
JournalJournal of Herpetology
Volume39
Issue number3
DOIs
StatePublished - Sep 2005

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Animal Science and Zoology

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