Population declines in the snowshoe hare and the role of stress
Rudy Boonstra,Grant R. Singleton +1 more
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TLDR
It is concluded that the pituitary-adrenocortical feedback system in hares from declining populations is operating normally and that they should be able to cope with acute, short-term stressors, but that they are in poor condition and are exposed to higher levels of free cortisol than fed hares in good condition.About:
This article is published in General and Comparative Endocrinology.The article was published on 1993-08-01 and is currently open access. It has received 124 citations till now. The article focuses on the topics: Population.read more
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Journal ArticleDOI
Seasonal changes in plasma glucocorticoid concentrations in free-living vertebrates.
TL;DR: This review examines the growing evidence that GC concentrations in free-living reptiles, amphibians, and birds, but not mammals, are commonly elevated during the breeding season and test three hypotheses with different focuses on GC's energetic or behavioral effects, as well as onGC's role in preparing the animal for subsequent stressors.
Journal ArticleDOI
Measuring stress in wildlife: techniques for quantifying glucocorticoids
Michael J. Sheriff,Michael J. Sheriff,Ben Dantzer,Brendan Delehanty,Rupert Palme,Rudy Boonstra +5 more
TL;DR: An overview of the four main biological samples that have been utilized, their advantages and disadvantages for use with wildlife, and some of the background and pitfalls that users must consider in interpreting their results are given.
Journal ArticleDOI
Impact of food and predation on the snowshoe hare cycle.
Charles J. Krebs,Stan Boutin,Rudy Boonstra,Anthony R. E. Sinclair,James N. M. Smith,Mark R. T. Dale,Kathy Martin,Roy Turkington +7 more
TL;DR: Food and predation together had a more than additive effect, which suggests that a three-trophic-level interaction generates hare cycles.
Journal ArticleDOI
The impact of predator-induced stress on the snowshoe hare cycle
TL;DR: These findings may also account for the lag in recovery of hare reproduction after predator densities have declined and thus may implicate the long-term consequences of predation risk on prey populations beyond the immediate effects of predators on prey behavior and physiology.
OtherDOI
Adrenocortical Responses to Stress and Their Modulation in Free‐Living Vertebrates
TL;DR: The sections in this article are: Labile (Transient) Perturbation Factors, Comparative Hormone Responses to Classical Stressors, and A Case for Glucocorticosteroids as Mediators of the Emergency Life History Stage.