Exposure to odors from stressed conspecifics increases preference for higher ambient temperatures in C57BL/6J mice

Del Thiessen, Chana Akins, Carlos Zalaquett

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

Exposure to odors from stressed conspecifics increases preference for higher ambient temperatures in C57BL/6J mice. C57BL/6J male mice were individually allowed preferences on a thermal gradient ranging in temperature from 22°C to 42°C. Group 1 (N=10) was exposed to odors from triads of foot-shocked conspecifics during the first 2-hr temperature preference trial. Group 2 (N=10) was exposed to odors from triads of nonstressed conspecifics during similar testing. Body temperature (TB) variations were measured in three animals of each group. Thermal preference was significantly higher for animals exposed to odors from stressed conspecifics than for animals exposed to odors from nonstressed animals (32.0°C vs. 29.0°C). TB changes on the heated gradient were significantly higher for animals exposed to odors from stressed animals (+1.5°C) than for animals exposed to odors from nonstressed animals (-0.33°C). Additional animals on a non-heated thermogradient were tested for TB when exposed to odors from stressed or from nonstressed animals (N=3 per condition). There was no difference in TB between these two groups. Increases in TB on the heated gradient are apparently due to the higher ambient temperature choices and not due to the odor per se.

Original languageEnglish (US)
Pages (from-to)1611-1619
Number of pages9
JournalJournal of Chemical Ecology
Volume17
Issue number8
DOIs
StatePublished - Aug 1 1991

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Biochemistry

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