Incremental changes in deer mouse ( Peromyscus maniculatus) core temperatures during behavioral challenges

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1. 1. Second generation deer mice bearing temperature-sensitive radiosondes respond by increasing body temperatures incrementally as a result of exposure to novel environments, visual, physical and contact, with opponents during intra-specific tests of aggression. 2. 2. Physical contact with an opponent results in additional increase in core temperature if the opponent is either of nearly equal or lower social rank. 3. 3. Physical contact with a more aggressive opponent does not result in an increase in core temperature over that recorded during visual contact, but is associated with a drop in core temperature of the submissive animal.