Placement, retrieval, and memory of caches by thirteen-lined ground squirrels

Citation
Ja. Devenport et al., Placement, retrieval, and memory of caches by thirteen-lined ground squirrels, ETHOLOGY, 106(2), 2000, pp. 171-183
Citations number
33
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Animal Sciences","Neurosciences & Behavoir
Journal title
ETHOLOGY
ISSN journal
0179-1613 → ACNP
Volume
106
Issue
2
Year of publication
2000
Pages
171 - 183
Database
ISI
SICI code
0179-1613(200002)106:2<171:PRAMOC>2.0.ZU;2-L
Abstract
Mechanisms governing placement and retrieval of scatter hoards were investi gated in 13-lined ground squirrels (Spermophilus tridecemlineatus). The squ irrels used several placement tactics, including relatively deep burial of seeds, avoidance of prominent objects, and cryptic placement, which would r educe chance discovery by competitors but that might also increase the diff iculty of retrieval for the hoarder. Nevertheless, scatter hoards were unfa ilingly retrieved within a day or two after placement, despite experimental elimination or displacement of local sensory cues emanating from the sites . Artificial caches placed close to true caches were not discovered, indica ting that recovery attempts were quite precise. These results imply that 13 -lined ground squirrels rely heavily on spatial memory for retrieval and ar e the first experimental demonstration of the importance of memory for cach e recovery in a natural population of mammals.