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Classical biological control of the cassava green mite

Published online by Cambridge University Press:  19 September 2011

B. Megevand ,
J. S. Yaninek  and
D. D. Friese
B. Megevand
Affiliation:
International Institute of Tropical Agriculture, Oyo Road, PMB 5320, Ibadan, Nigeria
J. S. Yaninek
Affiliation:
International Institute of Tropical Agriculture, Oyo Road, PMB 5320, Ibadan, Nigeria
D. D. Friese
Affiliation:
International Institute of Tropical Agriculture, Oyo Road, PMB 5320, Ibadan, Nigeria
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Abstract

A programme to control the cassava green mite (CGM), Mononychellus tanajoa, using classical biological control was initiated in 1983 as part of the Africa-wide Biological Control Programme (ABCP). Basic studies on the field ecology and biotic potential of CGM, and surveys of CGM and associated indigenous natural enemies found on cassava throughout Africa are being used to develop ecologically sound release and follow-up strategies. Applied work includes colony maintenance of exotic phytoseiids, development of methodologies for mass producing, transporting and releasing natural enemies, plus experimental releases and post-release surveys. Important parts of the work are being done in collaboration with several institutes and agencies, including foreign exploration and preliminary screening of exotic natural enemies, international quarantine services, regional release and follow-up surveys, taxonomy of CGM and phytoseiids, simulation modelling of CGM in the cassava ecosystem, artificial diets for transporting CGM natural enemies, survey of entomopathogens of CGM and predatory behaviour studies of exotic phytoseiids.

Résumé

Un programme de lutte contre Mononychellus tanajoa, l'acarien vert du manioc, fut lancé en 1983, dans le cadre du Programme africain de lutte biologique (Palb), sur base des techniques classiques de lutte biologique. Des études fondamentales sur l'écologie au champ et le potentiel biotique de l'acarien vert ainsi que des enquêtes sur l'acarien vert et les auxiliaires indigènes qui lui sont inféodés sur manioc furent menées à l'échelle du continent africain afin de concevoir des méthodes écologiquement saines de lâcher et de suivi. Les travaux pratiques ont porté sur le maintien des élevages de phytoséiides exotiques, la mise au point de méthodes de production de masse, de transport et de lâcher d'ennemis naturels, y compris les opérations de lâchers expérimentaux et les enquêtes postérieures aux lâchers. Des aspects importants de ces études sont réalisés en collaboration avec diverses institutions et agences, notamment les activités de prospection á l'étranger et de tri préliminaire des ennemis naturels exotiques, la mise en quarantaine à l'échelle internationale, les lâchers régionaux et enquêtes de suivi, la taxonomie de l'acarien vert et des phytoséiides, les modèles de simulation de l'acarien vert dans l'écosystème du manioc, l'alimentation artificielle pour le transport des ennemis naturels de l'acarien vert, l'étude des entomopathogènes de l'acarien vert ainsi que l'étude du comportement prédateur des phytoséiides exotiques.

Keywords

Classical biological controlcassava green miteMononychellus tanajoaphytoseiidslutte biologique classiqueacarien vert du maniocMononychellus tanajoaphytoséiides
Type
Symposium XI: Africa-wide Biological Control Programme of Cassava Pests
Information
International Journal of Tropical Insect Science , Volume 8 , Issue 4-5-6: Recent Advances in Research on Tropical Entomology , December 1987 , pp. 871 - 874
Copyright
Copyright © ICIPE 1987

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References

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