DallaireLabrecqueMarcotteEtAl2004

Référence

Dallaire, R., Labrecque, A., Marcotte, M., Bauce, E. and Delisle, J. (2004) The sublethal effects of tebufenozide on the precopulatory and copulatory activities of Choristoneura fumiferana and C-rosaceana. Entomologia Experimentalis et Applicata, 112(3):169-181.

Résumé

The sublethal effects of tebufenozide, an ecdysone agonist, on the reproductive biology of Choristoneura fumiferana (Clem) and of Choristoneura rosaceana (Harris) (Lepidoptera: Tortricidae), treated during the larval stage, were evaluated using two treatment methods: the force-feeding method and the diet method. The percentage of mortality and the developmental time of survivors increased linearly with the concentration of tebufenozide used. This ecdysone analogue proved to be more toxic to C. fumiferana than to C. rosaceana. In C. rosaceana, the weight of males and females decreased proportionally with the dose ingested, but females were affected to a greater extent. This difference might be due to a greater consumption of the treated diet, or to a differential vulnerability to tebufenozide. Tebufenozide did not modify the pre-copulatory activities associated with chemical communication in the females. However, the consumption of tebufenozide delayed ovarian maturation, causing a reduction in the fecundity of females. Treated males had smaller spermatophores and fewer eupyrene sperms in their bursa copulatrix and spermatheca, along with lower mating success. In C. fumiferana, tebufenozide delayed the females' onset time of calling the first night after emergence, but did not affect the mean time spent calling or the production of the main component of the sex pheromone. The males showed significantly greater difficulty in executing oriented flight in a wind tunnel, although their mating success was not affected. We concluded that tebufenozide interferes with various aspects of the reproductive biology of males and females of C. fumiferana and C. rosaceana, including some pre-copulatory behaviors associated with sex pheromone communication.

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@ARTICLE { DallaireLabrecqueMarcotteEtAl2004,
    AUTHOR = { Dallaire, R. and Labrecque, A. and Marcotte, M. and Bauce, E. and Delisle, J. },
    TITLE = { The sublethal effects of tebufenozide on the precopulatory and copulatory activities of Choristoneura fumiferana and C-rosaceana },
    JOURNAL = { Entomologia Experimentalis et Applicata },
    YEAR = { 2004 },
    VOLUME = { 112 },
    PAGES = { 169-181 },
    NUMBER = { 3 },
    NOTE = { 853GZ Times Cited:0 Cited References Count:69 },
    ABSTRACT = { The sublethal effects of tebufenozide, an ecdysone agonist, on the reproductive biology of Choristoneura fumiferana (Clem) and of Choristoneura rosaceana (Harris) (Lepidoptera: Tortricidae), treated during the larval stage, were evaluated using two treatment methods: the force-feeding method and the diet method. The percentage of mortality and the developmental time of survivors increased linearly with the concentration of tebufenozide used. This ecdysone analogue proved to be more toxic to C. fumiferana than to C. rosaceana. In C. rosaceana, the weight of males and females decreased proportionally with the dose ingested, but females were affected to a greater extent. This difference might be due to a greater consumption of the treated diet, or to a differential vulnerability to tebufenozide. Tebufenozide did not modify the pre-copulatory activities associated with chemical communication in the females. However, the consumption of tebufenozide delayed ovarian maturation, causing a reduction in the fecundity of females. Treated males had smaller spermatophores and fewer eupyrene sperms in their bursa copulatrix and spermatheca, along with lower mating success. In C. fumiferana, tebufenozide delayed the females' onset time of calling the first night after emergence, but did not affect the mean time spent calling or the production of the main component of the sex pheromone. The males showed significantly greater difficulty in executing oriented flight in a wind tunnel, although their mating success was not affected. We concluded that tebufenozide interferes with various aspects of the reproductive biology of males and females of C. fumiferana and C. rosaceana, including some pre-copulatory behaviors associated with sex pheromone communication. },
    KEYWORDS = { choristoneura fumiferana choristoneura rosaceana tebufenozide fecundity fertility pheromone communication lepidoptera tortricidae nonsteroidal ecdysteroid agonist spruce budworm lepidoptera codling moth lepidoptera pharate adult females juvenile-hormone obliquebanded leafroller ecdysone agonist in-vitro plodia-interpunctella physiological control },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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