Response of Parasitoids Dendrosoter protuberans and Cheiropachus quadrum to Attractants of Phloeotribus scarabaeoides in an Olfactometer

Authors: Lozano C.¹; Gonzalez E.¹; Peña A.¹; Campos M.¹; Plaza M.T.²; Rodriguez M.²; Izquierdo I.²; Tamayo J.²

Source: Journal of Chemical Ecology, Volume 26, Number 3, March 2000 , pp. 791-799(9)

Publisher: Springer

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Abstract:

The braconid Dendrosoter protuberans and the pteromalid Cheiropachus quadrum are two parasitoids of the olive bark beetle, Phloeotribus scarabaeoides. Several chemicals such as alpha -pinene, beta -pinene, 2-decanone, 2-nonanone, decanal, undecanal, and n-butyl acetate have been identified as attractants in the laboratory for this scolytid. Under red light at 27°C in a laboratory olfactometer both parasitoids oriented positively to both enantiomers of alpha -pinene, and females also responded to 2-decanone. Significant responses did not occur under white light or at lower temperatures. These results suggest that alpha -pinene and 2-decanone could be involved in the location of P. scarabaeoides by its parasitoids. Consequently an attracticidal control tactic for this scolytid that included these chemicals could eliminate part of the parasitoid population. In an integrated pest management program, this problem should be considered.

Keywords: Cheiropachus quadrum; Dendrosoter protuberans; parasitoids; semiochemicals; Phloeotribus scarabaeoides; bioassays

Language: English

Document Type: Regular paper

Affiliations: 1: Department of Agrobiología y Protección Vegetal, Estación Experimental del Zaidín (CSIC), Granada, Spain 2: Department of Química Orgánica, Facultad de Farmacia, Universidad de Granada, Granada Spain

Publication date: 2000-03-01