Document Detail


Do solitary foraging nocturnal mammals plan their routes?
MedLine Citation:
PMID:  21525046     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Large-brained diurnal mammals with complex social systems are known to plan where and how to reach a resource, as shown by a systematic movement pattern analysis. We examined for the first time large-scale movement patterns of a solitary-ranging and small-brained mammal, the mouse lemur (Microcebus murinus), by using the change-point test and a heuristic random travel model to get insight into foraging strategies and potential route-planning abilities. Mouse lemurs are small nocturnal primates inhabiting the seasonal dry deciduous forest in Madagascar. During the lean season with limited food availability, these lemurs rely on few stationary food resources. We radio-tracked seven lemurs and analysed their foraging patterns. First change-points coincided with out-of-sight keystone food resources. Travel paths were more efficient in detecting these resources than a heuristic random travel model within limits of estimated detection distance. Findings suggest that even nocturnal, solitary-ranging mammals with small brains plan their route to an out-of-sight target. Thus, similar ecological pressures may lead to comparable spatial cognitive skills irrespective of the degree of sociality or relative brain size.
Authors:
Marine Joly; Elke Zimmermann
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2011-04-27
Journal Detail:
Title:  Biology letters     Volume:  7     ISSN:  1744-957X     ISO Abbreviation:  Biol. Lett.     Publication Date:  2011 Aug 
Date Detail:
Created Date:  2011-07-13     Completed Date:  2011-11-21     Revised Date:  2013-06-30    
Medline Journal Info:
Nlm Unique ID:  101247722     Medline TA:  Biol Lett     Country:  England    
Other Details:
Languages:  eng     Pagination:  638-40     Citation Subset:  IM    
Copyright Information:
This journal is © 2011 The Royal Society
Affiliation:
Institute of Zoology, University of Veterinary Medicine Hannover, Buenteweg 17, 30559 Hannover, Germany. marine.joly@tiho-hannover.de
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MeSH Terms
Descriptor/Qualifier:
Animals
Cheirogaleidae / psychology*
Cognition*
Female
Movement
Comments/Corrections

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