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Mating disruption by a synthetic sex pheromone in the white grub beetle Dasylepida ishigakiensis (Coleoptera: Scarabaeidae) in the laboratory and sugarcane fields

Published online by Cambridge University Press:  22 September 2011

H. Yasui*
Affiliation:
Laboratory of Insect Behaviour and Physiology, National Institute of Agrobiological Sciences, Ohwashi, Tsukuba, Ibaraki 305-0851, Japan
S. Wakamura
Affiliation:
Laboratory of Insect Behaviour and Physiology, National Institute of Agrobiological Sciences, Ohwashi, Tsukuba, Ibaraki 305-0851, Japan
N. Fujiwara-Tsujii
Affiliation:
Laboratory of Insect Behaviour and Physiology, National Institute of Agrobiological Sciences, Ohwashi, Tsukuba, Ibaraki 305-0851, Japan
N. Arakaki
Affiliation:
Okinawa Prefectural Agricultural Research Center (OPARC), Itoman, Okinawa 901-0336, Japan
A. Nagayama
Affiliation:
Okinawa Prefectural Agricultural Research Center (OPARC), Itoman, Okinawa 901-0336, Japan
Y. Hokama
Affiliation:
Okinawa Prefectural Agricultural Research Center (OPARC), Itoman, Okinawa 901-0336, Japan
F. Mochizuki
Affiliation:
Specialty Chemicals Research Center, Shin-Etsu Chemical Co., Ltd.; Kubiki, Joetsu, Niigata 942-8601, Japan
T. Fukumoto
Affiliation:
Specialty Chemicals Research Center, Shin-Etsu Chemical Co., Ltd.; Kubiki, Joetsu, Niigata 942-8601, Japan
H. Oroku
Affiliation:
Miyakojima Branch, OPARC, Miyakojima, Okinawa 906-0012, Japan
K. Harano
Affiliation:
Laboratory of Insect Behaviour and Physiology, National Institute of Agrobiological Sciences, Ohwashi, Tsukuba, Ibaraki 305-0851, Japan
S. Tanaka
Affiliation:
Laboratory of Insect Behaviour and Physiology, National Institute of Agrobiological Sciences, Ohwashi, Tsukuba, Ibaraki 305-0851, Japan
*
*Author for correspondence Fax: +81(0)29 838 6205 E-mail: [email protected]

Abstract

A serious sugarcane pest, Dasylepida ishigakiensis, remains in the soil during most of its life cycle except for a short period for mating. Mating disruption by an artificial release of the sex pheromone (R)-2-butanol (R2B), therefore, may be a feasible method to control this pest. We examined the effects of artificial release of R2B and its related compounds, (S)-2-butanol (S2B) and the racemic 2-butanol (rac-2B), on the mating success of this beetle both in the laboratory and in the field. In flight tunnel experiments, almost all males orientated towards a R2B-releasing source and 40% of them landed on the source. When the atmosphere was permeated with R2B, the frequency of males landing on the model was significantly reduced. Both rac-2B and S2B were less effective, but substantial reduction in landing success by males was achieved at higher rac-2B concentrations. R2B released from polyethylene dispensers in sugarcane plots greatly reduced not only the proportion of females mated with males but also the number of males caught by R2B-baited traps, indicating that male mate-searching behaviour was strongly affected by the released R2B. Similar inhibitory effects on male behaviour were also observed when tube- or rope-type dispensers released high rac-2B concentrations in the field. These results indicate that it would be highly possible to control D. ishigakiensis through the disruption of the sexual communication by releasing either synthetic R2B or rac-2B.

Type
Research Paper
Copyright
Copyright © Cambridge University Press 2011

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