Document Detail

Quantitative characterization and classification of leech behavior.
MedLine Citation:
PMID:  15317841     Owner:  NLM     Status:  MEDLINE    
This paper describes an automatic system for the analysis and classification of leech behavior. Three colored beads were attached to the dorsal side of a free moving or pinned leech, and color CCD camera images were taken of the animal. The leech was restrained to moving in a small tank or petri dish, where the water level can be varied. An automatic system based on color processing tracked the colored beads over time, allowing real-time monitoring of the leech motion for several hours. At the end of each experimental session, six time series (2 for each bead) describing the leech body motion were obtained. A statistical analysis based on the speed and frequency content of bead motion indicated the existence of several stereotypical patterns of motion, corresponding to different leech behaviors. The identified patterns corresponded to swimming, pseudo-swimming, crawling, exploratory behavior, stationary states, abrupt movements, and combinations of these behaviors. The automatic characterization of leech behavior demonstrated here represents an important step toward understanding leech behavior and its properties. This method can be used to characterize the behavior of other invertebrates and also for some small vertebrates.
Alberto Mazzoni; Elizabeth Garcia-Perez; Davide Zoccolan; Sergio Graziosi; Vincent Torre
Publication Detail:
Type:  Comparative Study; Journal Article     Date:  2004-08-18
Journal Detail:
Title:  Journal of neurophysiology     Volume:  93     ISSN:  0022-3077     ISO Abbreviation:  J. Neurophysiol.     Publication Date:  2005 Jan 
Date Detail:
Created Date:  2004-12-17     Completed Date:  2005-02-28     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0375404     Medline TA:  J Neurophysiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  580-93     Citation Subset:  IM    
SISSA, Via Beirut 2, 34014 Trieste, Italy.
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MeSH Terms
Behavior, Animal / classification*,  physiology
Exploratory Behavior / physiology
Litchi / physiology*
Locomotion / physiology
Models, Neurological
Motor Activity / physiology*
Photography / methods
Physical Stimulation / methods
Spectrum Analysis
Swimming / physiology

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

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