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Microorganisms and semiochemicals as control strategies against phytophagous insect pests
Verheggen, François
2013International Meeting IRA 2013
 

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Abstract :
[en] Aphids are one of the most serious pests of crops worldwide, causing major yield and economic losses. To control aphids, natural enemies could be an option but their efficacy is sometimes limited by their dispersal in natural environment. Here we report the isolation of a bacterium from the pea aphid Acyrthosiphon pisum honeydew, Staphylococcus sciuri, which acts as a kairomone enhancing the efficiency of aphid natural enemies, both in the laboratory and in potato fields. Our findings represent the first case of a host-associated bacterium driving prey location and ovipositional preference for the natural enemy. We show that this bacterium has a key role in tritrophic interactions because it is the direct source of volatiles used to locate prey. Some specific semiochemicals produced by S. sciuri were also identified as significant attractants and ovipositional stimulants. The use of this host-associated bacterium could certainly provide a novel approach to control aphids in field and greenhouse systems.
Disciplines :
Entomology & pest control
Agriculture & agronomy
Author, co-author :
Verheggen, François  ;  Université de Liège - ULiège > Sciences agronomiques > Entomologie fonctionnelle et évolutive
Language :
English
Title :
Microorganisms and semiochemicals as control strategies against phytophagous insect pests
Publication date :
2013
Event name :
International Meeting IRA 2013
Event place :
Djerba, Tunisia
Event date :
Du 17 au 19 décembre 2013
By request :
Yes
Audience :
International
Available on ORBi :
since 19 October 2013

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