Document Detail

Effects of ventrolateral striatal inactivation on predatory hunting.
MedLine Citation:
PMID:  17234219     Owner:  NLM     Status:  MEDLINE    
Previous studies from our laboratory have shown that insect hunting is associated with a distinct Fos up-regulation in the ventrolateral caudoputamen at intermediate rostro-caudal levels. It is largely known that ventrolateral striatum participates in the control of orofacial movements and forepaw usage accompanying feeding behavior, but there has been no study investigating its possible roles during predatory hunting. We have presently examined the role of the ventrolateral striatum during roach hunting by using the reversible blockade with lidocaine. Accordingly, non-treated and saline-treated animals performed the insect hunting quite well, displaying a rather stereotyped form of motor actions for chasing, capturing and killing the prey. During the bilateral blockade of the ventrolateral striatum, the animals showed a significantly longer latency to start hunting and to capture the first prey. The lidocaine-treated animals captured the prey by using mostly the mouth, with little forepaw assistance, and were less effective in capturing the roaches. Moreover, while handling the prey, animals with ventrolateral striatal inactivation kept biting several parts of the prey, but failed to deliver the killing bite to the head, leaving them alive and moving, more likely to escape. Overall, the present findings suggest that the ventrolateral striatum implements the stereotyped actions seen during prey capture and handling, and may influence the motivational drive to start attacking the roaches, as well.
Lucélia M dos Santos; Marcelo M Ferro; Sandra R Mota-Ortiz; Marcus V Baldo; Cláudio da Cunha; Newton S Canteras
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2006-12-15
Journal Detail:
Title:  Physiology & behavior     Volume:  90     ISSN:  0031-9384     ISO Abbreviation:  Physiol. Behav.     Publication Date:  2007 Mar 
Date Detail:
Created Date:  2007-03-05     Completed Date:  2007-05-17     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0151504     Medline TA:  Physiol Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  669-73     Citation Subset:  IM    
Departamento de Farmacologia, Universidade Federal do Paraná, Curitiba, PR, CEP 81531-980, Brazil.
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MeSH Terms
Anesthetics, Local / pharmacology
Behavior, Animal / physiology
Corpus Striatum / drug effects,  physiology*
Food Deprivation
Lidocaine / pharmacology
Predatory Behavior / drug effects,  physiology*
Rats, Wistar
Reaction Time / drug effects,  physiology
Reg. No./Substance:
0/Anesthetics, Local; 137-58-6/Lidocaine

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

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