Agonistic interactions among wild eastern chipmunks (<i>Tamias striatus</i>)

Aniskowicz, B. T.; Vaillancourt, Jean‐Pierre

doi:10.1139/z79-081

Cited by 4 publications

(1 citation statement)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At the core of this home range is a relatively complex burrow system that is "tremendously important to the individual" (Elliott, 1978). The mean radius of home ranges (from central nest burrows to home range periphery), assuming that they are circular, is usually < 40 m. Although eastern chipmunks are not territorial, they often engage in agonistic behaviour (e.g., chasing, fighting at a food source) when an individual nears the centre of another chipmunk's home range (Wolfe, 1966;Dunford, 1970;Aniskowicz & Vaillancourt, 1979;Clarke et al, 1993;Clarke & Kramer, 1994a).…”

Section: Foraging Mode and Home Rangementioning

confidence: 99%

Plant—animal interactions and climate: Why do yellow pine chipmunks (Tamias amoenus) and eastern chipmunks (Tamias striatus) have such different effects on plants?

Wall

Jenkins

2011

Écoscience

View full text Add to dashboard Cite

Section: Foraging Mode and Home Rangementioning

confidence: 99%

Plant—animal interactions and climate: Why do yellow pine chipmunks (Tamias amoenus) and eastern chipmunks (Tamias striatus) have such different effects on plants?

Wall

Jenkins

2011

Écoscience

View full text Add to dashboard Cite

Behavioral variation in natural contests: integrating plasticity and personality

et al. 2021

View full text Add to dashboard Cite

Animals often interact aggressively when competing over limited resources. Aggressive decisions can be complex and may result from multiple sources of behavioral variation. The outcome of contests may be explained through contest theory and personality by considering conjointly plasticity and individual consistency. This integrative approach also allows investigating individual differences in responsiveness to environmental changes. Here, we observed multiple agonistic interactions occurring among eastern chipmunks (Tamias striatus) competing for food resources supplied at different distances from their burrows. Using an individual reaction norm approach, we found that the probability of winning a contest depended on an individual’s intrinsic characteristics (mass and age but not sex) but was also adjusted to characteristics of its opponents. Winning a contest also depended on extrinsic environmental characteristics, such as distance to the contestants’ burrows, but not the order of arrival at the feeding patch. We found consistent individual differences in the probability of winning, potentially related to differences in aggressiveness and territoriality. We also found that individuals differed in their plasticity level in response to changes in different characteristics of their social and physical environments. Plasticity, personality, and individual differences in responsiveness may thus all play a role in predicting contest outcome and in the evolution of animal contests.

show abstract

Influence of female-biased sexual size dimorphism on dominance of female Townsend’s chipmunks

Edelman

Koprowski

2006

Can. J. Zool.

View full text Add to dashboard Cite

Female-biased sexual size dimorphism (SSD), a condition common in North American chipmunks, occurs when females are larger than males in a species. We examined the influence of body size on dominance of captive female Townsend's chipmunks (Tamias townsendii Bachman, 1839), a species that exhibits female-biased SSD, in all-female and mixed-sex dyadic encounters. In all-female dyads, large female chipmunks were more frequently dominant over small female opponents. In mixed-sex dyads, large females were always dominant over small males. Female-biased SSD in Townsend's chipmunks appears to indirectly allow large females to more frequently dominate small female and male conspecifics. Greater dominance could increase reproductive success of large female chipmunks by increasing access to resources.Résumé : Le dimorphisme sexuel de la taille (SSD) qui favorise les femelles, une condition commune chez les tamias d'Amérique du Nord, se produit lorsque les femelles d'une espèce sont plus grandes que les mâles. Nous étudions l'influence de la taille corporelle sur la dominance chez des tamias de Townsend (Tamias townsendii Bachman, 1839) femelles en captivité, une espèce qui possède un SSD favorisant les femelles, lors de rencontres entre des dyades de femelles ou d'individus de sexe différent. Dans les dyades formées seulement de femelles, les femelles de grande taille dominent plus souvent leurs adversaires plus petits. Dans les dyades formées d'individus des deux sexes, les grandes femelles dominent toujours les petits mâles. Le SSD favorisant les femelles chez les tamias de Townsend semble permettre indirectement aux femelles plus grandes de dominer plus fréquemment les petites femelles et les mâles de leur espèce. La dominance accrue peut sans doute accroître le succès reproductif des grandes femelles de tamias en facilitant leur accès aux ressources.[Traduit par la Rédaction]

show abstract

Agonistic interactions among wild eastern chipmunks (Tamias striatus)

Cited by 4 publications

References 2 publications

Plant—animal interactions and climate: Why do yellow pine chipmunks (Tamias amoenus) and eastern chipmunks (Tamias striatus) have such different effects on plants?

Plant—animal interactions and climate: Why do yellow pine chipmunks (Tamias amoenus) and eastern chipmunks (Tamias striatus) have such different effects on plants?

Behavioral variation in natural contests: integrating plasticity and personality

Influence of female-biased sexual size dimorphism on dominance of female Townsend’s chipmunks

Contact Info

Product

Resources

About