The introduction of Typhlodromalus limonicus (Garman & McGregor) sensu lato is a major component of an on-going biological control campaign against the exotic cassava pest Mononychellus tanajoa (Bondar) in Africa. However, long-term establishment of this exotic phytoseiid predator has not yet bee...
Rogg, H.W.
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Yaninek, John S.
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[Population dynamics of Typhlodromalus limonicus from Colombia, an introduced predator of the exotic cassava green mite in West Africa]
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Population dynamics of Typhlodromalus limonicus from Colombia, an introduced predator of the exotic cassava green mite in West Africa
The survival of Neozygites cf. floridana (Weiser and Muma) as dry hyphal bodies in mummified cassava green mites, Mononychellus tanajoa (Bondar), at 5.0% RH in the dark was affected by storage temperature. Survival of the fungus in mummies kept at 24 + 1.0°C could be demonstrated for 6-7 months. ...
Oduor, G.
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Yaninek, John S.
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Geest, L. van der
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Moraes , G.J. de
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[Survival of Neozygites cf. floridana (Zygomycetes: entomophthorales) in mummified cassava green mites and the viability of its primary conidia]
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Survival of Neozygites cf. floridana (Zygomycetes: entomophthorales) in mummified cassava green mites and the viability of its primary conidia
A survey of the distribution and abundance of cassava green mite and associated indigenous natural enemies found in the cassava agroecosystem in Cameroon was conducted during the 1991 dry season (January-February). The survey area included nine of the ten provinces of the country and covered 4.2 ...
Tchuanyo, M.
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Yaninek, John S.
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Hammond, W.
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Onzo, A.
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Lienou, L.
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[Countrywide distribution of fauna association with the cassva green mite (Mononychellus tanajoa) in Cameroon]
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Countrywide distribution of fauna association with the cassva green mite (Mononychellus tanajoa) in Cameroon
How the pathogen inoculum size affects the pathogenicity of Neozygites floridanatoMononychellus tanajoawas studied at 28°C, 12L:12D photoperiod and 90–100% RH. All inoculum sizes tested (one, two, four, six, and eight capilliconidia per mite) were lethal. Dead mites started to appear 48 hr after ...
Oduor, G.I.
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Yaninek, John S.
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Moraes , G.J. de
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Geest, L.P.S. van der
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[The effect of pathogen dosage on the pathogenicity of Neozygites floridana (Zygomycetes:Entomophthorales) to Mononychellus tanajoa (Acari: Tetranychidae)]
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The effect of pathogen dosage on the pathogenicity of Neozygites floridana (Zygomycetes:Entomophthorales) to Mononychellus tanajoa (Acari: Tetranychidae)
Parsa, Soroush
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Hazzi, Nicolas A
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Chen, Qing
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Lu, Fuping
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Herrera Campo, Beatriz Vanessa
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Yaninek, John S.
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Vásquez Ordoñez, Aymer Andrés
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[Potential geographic distribution of two invasive cassava green mites]
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Potential geographic distribution of two invasive cassava green mites
Various foods associated with cassava were tested for their effect on the development, fecundity and longevity of Euseius fustis, the most common phytoseiid species found on cassava in Africa. Euseius Justis developed successfully to adulthood on the spider mite prey species Mononychellus tanajoa...
Bruce-Oliver, S.J.
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Hoy, M.A.
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Yaninek, John S.
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[Effect of some food sources associated with cassava in Africa on development success, fecundity, and longevity of Euseius fustis (Pritchard and Baker) (Acari: Phytoseiidae)]
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Effect of some food sources associated with cassava in Africa on development success, fecundity, and longevity of Euseius fustis (Pritchard and Baker) (Acari: Phytoseiidae)
The germination of capilliconidia of Neozygites floridana on the cassava green mite, Mononychellus tanajoa, and the viability of these conidia collected on glass coverslips were studied at different temperatures, humidities (expressed as saturation deficit (SD), measured in mg Hg), and light cond...
Oduor, G.I.
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Yaninek, John S.
,
Geest, L.P.S. van der
,
Moraes, G.J. de
,
[Germination and viability of capilliconida of Neozygites floridana (Zygomycetes:Entomophthorales) under constant temperature, humidity and light conditions]
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Germination and viability of capilliconida of Neozygites floridana (Zygomycetes:Entomophthorales) under constant temperature, humidity and light conditions
Density-specific sampling plans were developed under African conditions for the exotic spider mite, Mononychellus tanajoa (Bondar), a serious pest of cassava, Manihot esculenta. The within-plant distribution of Mononychellus tanajoa was found to favour new foliage, regardless of time of planting ...
Yaninek, John S.
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Baumgaertner, J.U.
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Gutiérrez, A.P.
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[Sampling Mononychellus tanajoa (Acari: Tetranychidae) on cassava in Africa]
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Sampling Mononychellus tanajoa (Acari: Tetranychidae) on cassava in Africa
Seasonally dense populations of Mononychellus tanajoa (Bondar), feeding on the leaves of cassava, Manihot esculenta Crantz, significantly reduced the leaf, stem, and storage-root dry matter of mite-infested plants. Stressed plants met metabolic demands by remobilizing the dry matter in stems and ...
Yaninek, John S.
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Gutiérrez, A.P.
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Herren, H.R.
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[Dynamics of Mononychellus tanajoa (Acari: Tetranychidae) in Africa: impact on dry matter production and allocation in cassava, Manihot esculenta]
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Dynamics of Mononychellus tanajoa (Acari: Tetranychidae) in Africa: impact on dry matter production and allocation in cassava, Manihot esculenta
A survey of the pathogenic fungi associated with mites on cassava in Benin, West Africa, revealed both geographical and seasonal variation in the presence of Neozygites cf. floridana (Weiser and Muma) and Hirsutella thompsonii Fisher on Mononychellus tanajoa (Bondar) and Oligonychus gossypii (Zac...
Yaninek, John S.
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Saizounou, Z.
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Onzo, A.
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Zannou, I.
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Gnanvossou, D.
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[Seasonal and habitat variability in the fungal pathogens, neozygites cf. floridana and Hirsutella thompsonii, associated with cassava mites in Benin]
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Seasonal and habitat variability in the fungal pathogens, neozygites cf. floridana and Hirsutella thompsonii, associated with cassava mites in Benin