Document Detail

How habitat features shape ground squirrel (Urocitellus beldingi) navigation.
MedLine Citation:
PMID:  20476817     Owner:  NLM     Status:  MEDLINE    
The purpose of this investigation was to determine whether Belding's ground squirrels (Urocitellus beldingi) from areas rich in beacons perform differently in a task of spatial memory compared with squirrels from beacon-thin areas. To assess the role of environmental experience in spatial memory, wild-born squirrels with several days of experience in the field were compared with squirrels born in a lab and with no experience in their original habitat. Over two summers, squirrels captured from beacon-dense and beacon-thin areas were tested in a radial maze interspersed with beacons, using number of trials to criterion as a measure of spatial memory. To evaluate the effect of landmark navigation, in year 2 juveniles were prevented from seeing outside the maze area. In both years squirrels from beacon-dense populations reached criterion faster than squirrels from beacon-thin populations, and a weak rearing effect was present in 1 year. Despite sex differences in adult spatial skills, no differences were found between males and females in the maze. This demonstrates variation in the navigation strategies of young U. beldingi, and highlights the need to evaluate spatial preferences as a function of population or ecology in addition to species and sex.
Jason N Bruck; Jill M Mateo
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of comparative psychology (Washington, D.C. : 1983)     Volume:  124     ISSN:  1939-2087     ISO Abbreviation:  J Comp Psychol     Publication Date:  2010 May 
Date Detail:
Created Date:  2010-05-18     Completed Date:  2010-09-14     Revised Date:  2014-09-19    
Medline Journal Info:
Nlm Unique ID:  8309850     Medline TA:  J Comp Psychol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  176-86     Citation Subset:  IM    
Copyright Information:
PsycINFO Database Record (c) 2010 APA, all rights reserved.
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MeSH Terms
Choice Behavior
Sex Factors
Space Perception
Spatial Behavior*
Grant Support
R01 MH063921/MH/NIMH NIH HHS; R01 MH063921-01A1/MH/NIMH NIH HHS; R01 MH63921-01A1/MH/NIMH NIH HHS

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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