Trichogramma pretiosum attraction due to the Elasmopalpus lignosellus damage in maize

Pesquisa Agropecuária Brasileira

Luciane Modenez Saldivar Xavier²  Raúl Alberto Laumann¹  Miguel Borges¹  Diego Martins Magalhães¹  Evaldo Ferreira Vilela²  Maria Carolina Blassioli-moraes¹ 

[1] ,Universidade Federal de Viçosa Departamento de Biologia Animal Viçosa MG ,Brazil

关键词: egg parasitoid;    tritrophic interaction;    semiochemicals;    volatile organic compounds;    parasitoide de ovos;    interação tritrófica;    semioquímicos;    compostos orgânicos voláteis;   

DOI  :  10.1590/S0100-204X2011000600002

来源: SciELO

【 摘 要 】

The objective of this work was to evaluate if corn plants damaged by the lesser cornstalk borer (Elasmopalpus lignosellus) larvae release volatile organic compounds capable of attracting the egg parasitoid Trichogramma pretiosum. The treatments consisted of plants subjected to harm caused by E. lignosellus larvae, plants subjected to mechanical damage, and undamaged plants. The parasitoid was more attracted by the volatiles released by the insect damaged plants than to those released by undamaged corn plants, after 24 and 72 hours. The volatiles (Z)-3-hexenyl acetate, β-pinene, β-myrcene, (E)-4,8-dimethylnona-1,3,7-triene, and benzothiazole were released in significantly larger quantities by damaged plants. Volatiles released by corn plants damaged by E. lignosellus larvae may act as an indirect defense, attracting by T. pretiosum.

【 授权许可】

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