Document Detail

Bilateral and unilateral antennal lesions alter orientation abilities of the crayfish, Orconectes rusticus.
MedLine Citation:
PMID:  11751468     Owner:  NLM     Status:  MEDLINE    
Numerous animals use chemical cues within their environments to execute various behaviors. One of these behaviors is orientation to an odor source. Crayfish, in particular, can orient to food sources under a number of different conditions. It has not been determined, however, what kind of search strategy these animals employ to successfully locate a food source. To determine the role of antennae and antennules in this behavior and to investigate different modes of orientation behavior, the orientation patterns of crayfish with complete and partial antennal lesions were examined. Detailed analysis of orientation paths confirmed that crayfish could not locate odor sources with either bilateral or unilateral lesions. This suggests that crayfish are using the spatial information obtained from these appendages to successfully orient. Animals using information from the bilaterally paired appendages in the control group exhibited increased walking speed, increased speed to source and decreased heading angles towards the source compared to these measurements taken from lesioned groups. There was no significant difference in any parameters between animals with unilateral or bilateral lesions. This strongly suggests that these animals are reliant on the spatial comparison of differences between bilaterally paired olfactory appendages for successful orientation.
Kimberly E Kraus-Epley; Paul A Moore
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Chemical senses     Volume:  27     ISSN:  0379-864X     ISO Abbreviation:  Chem. Senses     Publication Date:  2002 Jan 
Date Detail:
Created Date:  2001-12-25     Completed Date:  2003-03-26     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8217190     Medline TA:  Chem Senses     Country:  England    
Other Details:
Languages:  eng     Pagination:  49-55     Citation Subset:  IM    
J.P. Scott Center for Neuroscience, Mind and Behavior, Laboratory for Sensory Ecology and Department of Biological Sciences, Bowling Green State University, Bowling Green, OH 43403, USA.
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MeSH Terms
Astacoidea / physiology*
Exploratory Behavior / physiology
Motor Activity / physiology*
Sense Organs / physiology*
Smell / physiology
Walking / physiology

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