Variation in vigilance of yellow-bellied marmots due to predator pressure
Abstract
Vigilance is an anti-predator behavior responsible for ensuring the survival of an individual. This behavior directly benefits the individual, as well as conspecifics by scanning for potential threats. The amount of time devoted to vigilance in yellow-bellied marmots varies based on many factors including age, sex, group size, presence of other marmots, and predator pressure. The goal of this study is to explain variation in vigilance by incorporating predator pressure into a statistical model. By using focal observations time allocations for vigilant behaviors were obtained. A general linear model was fit in order to explain the variation in vigilance for eight known colonies at the Rocky Mountain Biological Laboratory. Several factors such as age, sex, and slope were not statistically significant whereas the category of animals within 10m was marginally statistically significant. The covariate of total predators per observation time provided statistically significant results.
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References (31)
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