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Inventaire Commente de la Bibliographie sur le Criquet Senegalais, Oedaleus senegalensis (Krauss, 1877)

Published online by Cambridge University Press:  19 September 2011

Tahir Diop
Tahir Diop
Affiliation:
Département de Formation en Protection des Végétaux, Centre AGRHYMET, B.P. 12625, Niamey, Niger
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Abstract

Oedaleus senegalensis is a mainly sahelian non gregarious grasshopper which is today considered as the most important crop pest acridid, especially on millet. The species has three generations per year (rarely four) and spends the dry season as diapausing/quiescent eggs. Both photoperiod and temperature influence the induction of diapause in which O. senegalensis eggs can survive several years. Migratory movements have been reported by many authors; adults may migrate up to 350 km per night. These factors enable the species' adaptation to its natural hostile environment. The current control strategies are based on monitoring of the oviposition sites of the dry season to predict the subsequent outbreaks in order to control early hatchlings during the following rainy season. The present work gives an overview of the current knowledge on the morphology, biology, ecology and control methods of the grasshopper.

Résumé

Oedaleus senegalensis (Krauss, 1877) est un sauteriau acridien non grégariapte typiquement sahélien, et qui est considéré aujourd'hui comme le principal acridien ravageur des cultures au Sahel le petit mil notamment. Cette espèce a trois générations annuelles (rarement quatre) et une diapause embryonnaire en saison sèche. La photopériode et la température influencent l'induction de cette diapause et les oeufs peuvent survivre plusieurs années. Des mouvements migratoires de l'espèce ont été signalés par plusieurs auteurs et les adultes se déplacent au moins jusqu' à 350 km par nuit. Ces deux facteurs permettent une adaptation de l'espèce à son environnement hostile. Les stratégies de lutte actuelles reposent essentiellement sur le repérage des sites de pontes, en saison sèche, afin de lutter contre les juvéniles au début de la prochaine saison des pluies. Le présent inventaire bibliographique permet de présenter le bilan des principales connaissances concernant la morphologie, la biologie, et l'écologie de cet acridien et ainsi que les moyens mis en œuvre pour son contrôle.

Keywords

AcridoideaOedaleus senegalensisSenegalese grasshopperreviewAcridoideaOedaleus senegalensiscriquet sénégalaisrevue
Type
Mini Review
Information
International Journal of Tropical Insect Science , Volume 17 , Issue 3-4 , December 1997 , pp. 277 - 291
Copyright
Copyright © ICIPE 1997

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