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Manipulation of parasitoids for aphid pest management: progress and prospects
Author(s) -
Powell Wilf,
Pickett John A
Publication year - 2003
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.550
Subject(s) - aphid , biology , semiochemical , biological pest control , kairomone , sex pheromone , mating disruption , aphididae , pest analysis , integrated pest management , botany , agronomy , ecology , predation , homoptera
This paper describes research at IACR‐Rothamsted on aphid parasitoid responses to semiochemical foraging stimuli, aimed at developing novel ways of manipulating these behaviours to overcome ecological constraints to biological and integrated pest control. Female parasitoids respond both to aphid sex pheromones acting as kairomones, and to aphid‐induced plant volatiles, acting as synomones. A range of economically important parasitoid species respond to aphid sex pheromones, and their potential for enhancing parasitization of aphid populations has been demonstrated in the field. Commercial production of the pheromone from the plant Nepeta cataria L has been developed and strategies for its use in arable crops are being investigated. Aphid‐induced plant volatiles are released systemically throughout the plant and are aphid species specific, probably induced by elicitors in aphid saliva. Aphid‐infested plants can induce uninfested neighbours to release damage‐related volatiles, plant‐to‐plant communication occurring via the rhizosphere. The plant compound cis‐jasmone has been identified as a plant signal with potential for aphid control, inducing plant defence mechanisms that both deter colonising aphids and attract parasitoids and predators. Such compounds may represent a new generation of crop protectants and their further investigation and development will be aided by the tools generated by genomic and post‐genomic biology. © 2003 Society of Chemical Industry