Bonato Olivier, Baumgärtner J., Gutierrez Jean. (1995). Sampling plans for Mononychellus progresivus and Oligonychus gossypii (Acari : Tetranychidae) on cassava in Africa. Journal of Economic Entomology, 88 (5), p. 1296-1300. ISSN 0022-0493.
Titre du document
Sampling plans for Mononychellus progresivus and Oligonychus gossypii (Acari : Tetranychidae) on cassava in Africa
Année de publication
1995
Type de document
Article
Auteurs
Bonato Olivier, Baumgärtner J., Gutierrez Jean
Source
Journal of Economic Entomology, 1995,
88 (5), p. 1296-1300 ISSN 0022-0493
Sampling plans were developed for 2 phytophagous mites, Mononychellus progresivus Doreste and Oligonychus gossypii (Zacher), on cassava in Africa. Analysis of intraplant distribution showed a preference of M. progresivus for the apical and middle parts of the plant, and of O. gossypii for the middle and lower plant parts. Thus, the first fully developed leaf in the middle part was chosen as the common sampling unit for both species. On this unit, both species displayed aggregated distributions. The proposed binomial and enumerative sampling plans permit reliable estimates of both M. progresivus and O. gossypii densities. Forty fully developed leaves provided satisfactory estimates of the densities of both mite species. (Résumé d'auteur)
