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Taxonomic inventory and survey activity for natural enemies of cassava green mites in the Americas

Published online by Cambridge University Press:  19 September 2011

A. C. Bellotti ,
N. Mesa ,
M. Serrano ,
J. M. Guerrero  and
C. J. Herrera
A. C. Bellotti
Affiliation:
Centro Internacional de Agricultura Tropical, Apartado Aereo 6713, Cali, Colombia
N. Mesa
Affiliation:
Centro Internacional de Agricultura Tropical, Apartado Aereo 6713, Cali, Colombia
M. Serrano
Affiliation:
Centro Internacional de Agricultura Tropical, Apartado Aereo 6713, Cali, Colombia
J. M. Guerrero
Affiliation:
Centro Internacional de Agricultura Tropical, Apartado Aereo 6713, Cali, Colombia
C. J. Herrera
Affiliation:
Centro Internacional de Agricultura Tropical, Apartado Aereo 6713, Cali, Colombia
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Abstract

A taxonomie inventory is under way in South America to identify the major natural enemies of the cassava green mites, Mononychellus tanajoa. Special emphasis is being given to the Phytoseiidae, important predators of phytophagous mites feeding on cassava. Several insect predators and more than 40 species of Phytoseiidae have been identified in Colombia; Typhlodromalus limonicus and Neoseiulus anonymus are the most frequently found species. Selected aspects of the bionomic studies on T. limonicus and N. anonymus are presented, and methods of rearing numerous phytoseiid species are discussed. Five species are being reared at the Centro Internacional de Agricultura Tropical (CIAT) and have been sent to the International Institute of Tropical Agriculture (IITA) in Nigeria. Surveys for natural enemies will include most cassava-growing areas of Central and South America. Selection of exploration sites and timing of explorations will be guided by matching agrometeorological zones in the country of origin with those in the proposed country of introduction. Duration of dry periods, rainfall patterns and temperature are particularly important considerations in the matching.

Résumé

Un inventaire taxonomique est actuellement en cours en Amérique du Sud afin d'identifier les principaux ennemis naturels des acariens verts du manioc (Mononychellus tanajoa [Bondar] sensu lato). Une attention particulière est portée aux phytoséiides, un groupe important de prédateurs des acariens phytophages infestant le manioc. Plusieurs insectes prédateurs et plus de 40 espèces de phytoséiides ont pu être découverts en Colombie; Typhlodromalus limonicus et Neoseiulus anonymus sont les deux espèces les plus répandues. On procède actuellement à l'élevage de cinq espèces au Centro Internacional de Agricultura Tropical (Ciat). Elles ont été envoyées à l'Institut international d'agriculture tropicale (lita), au Nigeria. Les activités de recherche d'ennemis naturels engloberont la plupart des régions d'Amérique centrale et du Sud où l'on cultive le manioc. Le choix des sites d'exploration ainsi que le calendrier des recherches tiendront compte des correspondances pouvant exister entre les zones agrométéorologiques du pays d'origine et celles du pays proposé pour l'introduction. Les périodes de sécheresse, la pluviométrie et la température constitueront, d'ailleurs, d'importants critères de sélection.

Keywords

Mononychellusbiological controlnatural enemiesexplorationPhytoseiidaeneotropicsrearingMononychelluslutte biologiqueennemis naturelsexplorationphytoséiidesnéotropiquesélevage
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. 845 - 849
Copyright
Copyright © ICIPE 1987

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References

REFERENCES

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