Host-Seeking Behavior of Eriborus terebrans (Hymenoptera: Ichneumonidae) Toward the European Corn Borer and the Role of Chemical Stimuli

Author： MA RUNLIN ZHANG SWEDENBORG PAUL D. JONES RICHARD L.

Publisher： Entomological Society of America

ISSN： 1938-2901

Source： Annals of the Entomological Society of America, Vol.85, Iss.1, 1992-01, pp. : 72-79

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Abstract

Newly designed T trap and wind tunnel bioassays demonstrated that attraction of female Eriborus terebrans (Gravenhorst) to larvae of the European corn borer, Ostrinia nubilalis (Hübner), was elicited by odors of host plant complex (HPC), frass, corn plants, host larvae, feces, and oral secretion. Female experience had a fundamental influence on behavior, and green and yellow colors were attractive to females in the wind tunnel. Antennation, intensive examination, and probing-oviposition behavior of the parasitoid were readily stimulated in contact bioassays by HPC, host larva silk, frass, oral secretion, and cuticle. Serine and certain other amino acids elicited intensive examination and occasional probing. Volatile and contact chemicals mediating behavior were extractable with hexane, acetone, chloroform, and methanol. The role of vision and the possibility of multiple chemical cues involved in both long- and close-range host-seeking behaviors are discussed.