Patterns of Selective Caching Behavior of a Generalist Herbivore, the American Pika (Ochotona princeps)

Caching decisions have been studied for many species, but large-scale variation of selective preferences due to environmental heterogeneity has rarely been examined. We investigated large-scale patterns of selective caching behavior in the American pika (Ochotona princeps), a non-hibernating general...

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Bibliographische Detailangaben
Veröffentlicht in:	Arctic, Antarctic, and Alpine Research. - Taylor & Francis, Ltd., 1999. - 45(2013), 3, Seite 396-403
1. Verfasser:	Smith, Justine A. (VerfasserIn)
Weitere Verfasser:	Erb, Liesl P.
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2013
Zugriff auf das übergeordnete Werk:	Arctic, Antarctic, and Alpine Research
Schlagworte:	Biological sciences Behavioral sciences Physical sciences


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100	1		\|a Smith, Justine A. \|e verfasserin \|4 aut
245	1	0	\|a Patterns of Selective Caching Behavior of a Generalist Herbivore, the American Pika (Ochotona princeps)
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520			\|a Caching decisions have been studied for many species, but large-scale variation of selective preferences due to environmental heterogeneity has rarely been examined. We investigated large-scale patterns of selective caching behavior in the American pika (Ochotona princeps), a non-hibernating generalist herbivore that caches vegetation in haypiles to serve as winter food. At 13 sites throughout the southern Rocky Mountains, we identified the three most common available and cached plant species and analyzed them for dietary quality. Selectivity at each site was measured as the difference between average quality of the most common cached and available vegetation. Pikas consistently cached materials of higher quality than the most common available vegetation. Selectivity for high nitrogen corresponded to quality of available plants and site summer temperature, whereas selectivity for high water content was negatively correlated with elevation. Our results indicate that pikas cache a variety of plant materials while using different selectivity cues, illustrating the complexity of pika caching behavior across a range of environmental conditions and forage values. Future studies on caching behavior should take into account differential selectivity due to environmental heterogeneity.
540			\|a © 2013 Regents of the University of Colorado
650		4	\|a Biological sciences \|x Biology \|x Botany \|x Plants
650		4	\|a Biological sciences \|x Biology \|x Botany \|x Plant ecology \|x Vegetation
650		4	\|a Behavioral sciences \|x Ethology \|x Animal behavior \|x Animal feeding behavior \|x Animal hoarding behavior \|x Caching
650		4	\|a Physical sciences \|x Chemistry \|x Chemical elements \|x Nitrogen
650		4	\|a Physical sciences \|x Physics \|x Mechanics \|x Fluid mechanics \|x Fluid dynamics \|x Material concentration \|x Moisture content
650		4	\|a Biological sciences \|x Biology \|x Biological taxonomies \|x Species
650		4	\|a Behavioral sciences \|x Ethology \|x Animal behavior \|x Animal feeding behavior \|x Foraging
650		4	\|a Physical sciences \|x Earth sciences \|x Geography \|x Geomorphology \|x Topography \|x Topographical elevation
650		4	\|a Physical sciences \|x Physics \|x Thermodynamics \|x Thermal analysis \|x Temperature \|x Water temperature
650		4	\|a Biological sciences \|x Agriculture \|x Agricultural sciences \|x Animal science \|x Animal nutrition \|x Forage and feed science \|x Forage
655		4	\|a research-article
700	1		\|a Erb, Liesl P. \|e verfasserin \|4 aut
773	0	8	\|i Enthalten in \|t Arctic, Antarctic, and Alpine Research \|d Taylor & Francis, Ltd., 1999 \|g 45(2013), 3, Seite 396-403 \|w (DE-627)328216798 \|w (DE-600)2045941-5 \|x 19384246 \|7 nnns
773	1	8	\|g volume:45 \|g year:2013 \|g number:3 \|g pages:396-403
856	4	0	\|u https://www.jstor.org/stable/24551630 \|3 Volltext
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