Document Detail


Can generalist predators be effective biocontrol agents?
MedLine Citation:
PMID:  11729085     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Theoretical developments are helping us to comprehend the basic parameters governing the dynamics of the interactions between generalist predators and their many pest and nonpest prey. In practice, however, inter- and intraspecific interactions between generalist predators, and between the predators and their prey, within multispecies systems under the influence of rapidly changing biotic and abiotic variables are difficult to predict. We discuss trade-offs between the relative merits of specialists and generalists that allow both to be effective, and often complementary, under different circumstances. A review of manipulative field studies showed that in approximately 75% of cases, generalist predators, whether single species or species assemblages, reduced pest numbers significantly. Techniques for manipulating predator numbers to enhance pest control at different scales are discussed. We now need to find ways of disentangling the factors influencing positive and negative interactions within natural enemy communities in order to optimize beneficial synergies leading to pest control.
Authors:
W O C Symondson; K D Sunderland; M H Greenstone
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Review    
Journal Detail:
Title:  Annual review of entomology     Volume:  47     ISSN:  0066-4170     ISO Abbreviation:  Annu. Rev. Entomol.     Publication Date:  2002  
Date Detail:
Created Date:  2001-11-30     Completed Date:  2002-03-01     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0372367     Medline TA:  Annu Rev Entomol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  561-94     Citation Subset:  IM    
Affiliation:
Cardiff School of Biosciences, Cardiff University, P.O. Box 915, Cardiff CF10 3TL, United Kingdom. symondson@cardiff.ac.uk
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MeSH Terms
Descriptor/Qualifier:
Animals
Pest Control, Biological / methods*
Predatory Behavior*

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


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