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Mass rearing of Chilo spp. on artificial diets and its use in resistance screening

Published online by Cambridge University Press:  19 September 2011

S. L. Taneja  and
Kanayo F. Nwanze
S. L. Taneja
Affiliation:
Cereals Entomology, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru. P. O. 502 324, A. P. India
Kanayo F. Nwanze
Affiliation:
Cereals Entomology, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru. P. O. 502 324, A. P. India
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Abstract

Several species of Chilo are serious pests of cereal crops. The important species attacking cereals are Chilo agamemnon, C. orichalcociliellus and C. partellus on maize and sorghum; C. auricilius and C. zacconius on sugar-cane, and rice; C. suppressalis on rice; and C. sacchariphagus indicus on sugar-cane. Insects are reared in the laboratory on natural and artificial diets for various purposes, namely for insecticide testing, hormone and pheromone manipulation, biological control, host-plant resistance, etc. Rearing of an insect in the laboratory requires rearing facilities, colony establishment, research and development of rearing techniques, resources, and maintenance of insect quality. All these aspects for rearing major Chilo spp. have been discussed. However, detailed information is available only for C. partellus and C. suppressalis. Techniques used for resistance screening and damage evaluation against spotted stem borer, C. partellus using naturally occurring population and artificial infestation are described.

Résumé

Elevage en masse de Chilo spp. sur des regimes artificiels et son emploi dans le criblage pour la résistance: Plusieurs espèces de Chilo sont des ravageurs dangereux de cultures céréalières. Les espèces importantes qui s'attaquent aux céréales sont Chilo agamemnon, C. orichalcociliellus et C. partellus sur le maïs et le sorgho; C. auricilius et C. zacconius sur la canne à sucre et le riz; C. suppressalis sur le riz; et C. sacchariphagus indicus sur la canne a sucre. L'élevage des insectes en laboratoire sur les régimes naturels et artificiels permet la réalisation de travaux divers, notamment les essais d'insecticides, la manipulation des hormones et de phéromones, la lutte biologique, la résistance de la plante-hôte, etc. Il demande, cependant, la prévision du matériel nécessaire, l'établissement de colonies, la recherche et la mise au point de techniques de l'élevage, les ressources et la conservation de la qualité des insectes. Cet article traite de tous ces aspects de l'élevage de Chilo spp. majeurs. Par contre, des informations détaillées ne sont disponibles que pour C. partellus et pour C. suppressalis.

Sont également decrites, des techniques destinees au criblage pour la resistance et a l'évaluation des dégâts causés par le foreur ponctué du sorgho C. partellus; ces techniques font appel à la population naturelle et l'infestation artificielle.

Keywords

Mass rearingartificial dietresistance screeningChilo spp.ovipositioninsectaryartificial infestation
Type
Rearing and Quality Control
Information
International Journal of Tropical Insect Science , Volume 11 , Special Issue 4-5: Tropical Stem Borers of Graminaceous Crops: A New Synthesis , October 1990 , pp. 603 - 616
Copyright
Copyright © ICIPE 1990

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