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Scatter hoarding by the Central American agouti: a test of optimal cache spacing theory

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dc.contributor.author Galvez, Dumas en
dc.contributor.author Kranstauber, Bart en
dc.contributor.author Kays, Roland W. en
dc.contributor.author Jansen, Patrick A. en
dc.date.accessioned 2011-02-09T20:03:20Z
dc.date.available 2011-02-09T20:03:20Z
dc.date.issued 2009
dc.identifier.citation Galvez, Dumas, Kranstauber, Bart, Kays, Roland W., and Jansen, Patrick A. 2009. "<a href="https%3A%2F%2Frepository.si.edu%2Fhandle%2F10088%2F11909">Scatter hoarding by the Central American agouti: a test of optimal cache spacing theory</a>." <em>Animal Behaviour</em>. 78 (6):1327&ndash;1333. <a href="https://doi.org/10.1016/j.anbehav.2009.08.015">https://doi.org/10.1016/j.anbehav.2009.08.015</a> en
dc.identifier.issn 0003-3472
dc.identifier.uri http://hdl.handle.net/10088/11909
dc.description.abstract Optimal cache spacing theory predicts that scatter-hoarding animals store food at a density that balances the gains of reducing cache robbery against the costs of spacing out caches further. We tested the key prediction that cache robbery and cache spacing increase with the economic value of food: the ratio of food to consumer abundance. We quantified cache pilferage and cache spacing by the Central American agouti, Dasyprocta punctata, in the tropical forest of Barro Colorado Island, Panama, across 10 1 ha plots that encompassed a more than 100-fold range in the availability of Astrocaryum palm seeds, the agouti&#39;s principal food. We found that caches were pilfered at higher rates in plots with lower seed availability, and that agoutis cached seeds further away and into lower densities where seed availability was lower. Food scarcity apparently increased the pressure of food competitors on caches, stimulating agoutis to put more effort into caching seeds to create lower cache densities, fully consistent with theory. We conclude that the optimal cache density depends not only on the nutritional value of food but also on the economic value, which may vary in space as well as time. (C) 2009 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved. en
dc.relation.ispartof Animal Behaviour en
dc.title Scatter hoarding by the Central American agouti: a test of optimal cache spacing theory en
dc.type Journal Article en
dc.identifier.srbnumber 81081
dc.identifier.doi 10.1016/j.anbehav.2009.08.015
rft.jtitle Animal Behaviour
rft.volume 78
rft.issue 6
rft.spage 1327
rft.epage 1333
dc.description.SIUnit STRI en
dc.citation.spage 1327
dc.citation.epage 1333

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