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Onzo, A.Sabelis, M.W.Hanna, R.[Single versus multiple enemies and the impact on biological control of spider mites in cassava fields in WestAfrica]Single versus multiple enemies and the impact on biological control of spider mites in cassava fields in WestAfrica

Cashew, Anacardium occidentale L. is an important export crop in Benin, but incurs serious damage from the cashew wood borer Apate terebrans Pallas. In spite of its economic importance, the population dynamics of this beetle have never been studied, thus precluding any science-based development a...


Agboton, C.Onzo, A.Korie, S.Tamo, M.Vidal, S.[Spatial and temporal infestation rates of Apate terebrans (Coleoptera: bostrichidae) in cashew orchards in Benin, west Africa]Spatial and temporal infestation rates of Apate terebrans (Coleoptera: bostrichidae) in cashew orchards in Benin, west Africa

The issue of introducing single or multiple natural enemy species for classical biological control has been an area of intense inquiry by ecologists and biological control practitioners. This is particularly relevant to classical biological control of cassava green mite Mononychellus tanajoa (Bon...


Onzo, A.Hanna, R.Janssen, A.Sabelis, M.[Interactions between two neotropical phytoseiid predators and consequences for biological control of a shared prey]Interactions between two neotropical phytoseiid predators and consequences for biological control of a shared prey

It is well recognized that the quality of host plants affects the development and survival of plant-feeding arthropods. The effects of two leafy vegetable crops, amaranth, Amaranthus cruentus L. (Caryophyllales: Amaranthaceae) and nightshade, Solanum macrocarpon L. (Solanales: Solanaceae) were ex...


Adango, E.Onzo, A.Hanna, R.Atachi, P.James, B.[Comparative demography of the spider mite Tetranychus ludeni on two host plants in West Africa.]Comparative demography of the spider mite Tetranychus ludeni on two host plants in West Africa.

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.Yaninek, John S.Hammond, W.Onzo, A.Lienou, L.[Countrywide distribution of fauna association with the cassva green mite (Mononychellus tanajoa) in Cameroon]Countrywide distribution of fauna association with the cassva green mite (Mononychellus tanajoa) in Cameroon
Onzo, A.Hanna, R.Zannou, I.Sabelis, M.W.Yaninek, John S.[Dynamics of refuge use: diurnal vertical migration of predatory and herbivorous mites within cassava plants]Dynamics of refuge use: diurnal vertical migration of predatory and herbivorous mites within cassava plants

In this study, we investigate the spatio-temporal fluctuations of the cashew leafminer Eteoryctis gemoniella Stainton, which was recently reported as one of the most devastating cashew pests in Benin. Eteoryctis gemoniella causes serious damage, especially to the young tender leaves, thus reducin...


Agboton, C.Onzo, A.Akohou, H.A.Goergen, Georg E.Vidal, S.Tamò, M.[Population dynamics of the cashew leafminer, Eteoryctis gemoniella (Lepidoptera: Gracillariidae), and inventory of its parasitoids in cashew orchards of Northern Benin, West Africa]Population dynamics of the cashew leafminer, Eteoryctis gemoniella (Lepidoptera: Gracillariidae), and inventory of its parasitoids in cashew orchards of Northern Benin, West Africa

Mite fauna associated with Amaranthus cruentus L. and Solanum macrocarpon L., two major indigenous leafy vegetables produced in Benin, was monitored in July-October 2004, on IITA-Benin Station where no pesticides were applied and on a farmer-managed vegetable farm near Abomey-Calavi with pesticid...


Adango, E.Onzo, A.Hanna, R.Atachi, P.James, B.[Mite pests of major importance on indigenous leafy vegetables in Benin: the search for appropriate control strategies]Mite pests of major importance on indigenous leafy vegetables in Benin: the search for appropriate control strategies

To improve biocontrol of the cassava green mite, Mononychellus tanajoa, a series of screenhouse experiments were conducted on cassava to determine the effects of single and combined releases of the predatory mite Typhlodromalus aripo and the entomopathogenic fungus Neozygites tanajoae on the supp...


Onzo, A.Bello, I.Hanna, R.[Effects of the entomopathogenic fungus Neozygites tanajoae and the predatory mite Typhlodromalus aripo on cassava green mite densities: screenhouse experiments]Effects of the entomopathogenic fungus Neozygites tanajoae and the predatory mite Typhlodromalus aripo on cassava green mite densities: screenhouse experiments

There is an increasing awareness that vegetation diversity can affect herbi-vore and natural enemy abundance and that plants can play a major rolein directly manipulating natural enemy abundance for protection againstherbivore attacks. Using data from cassava fields, we aimed at (i) testingthe ca...


Onzo, A.Hanna, R.Toko, M.[Mixplanting pubescent and glabrous cassava affects abundance of Typhlodromalus aripo and its prey mite Mononychellus tanajoa]Mixplanting pubescent and glabrous cassava affects abundance of Typhlodromalus aripo and its prey mite Mononychellus tanajoa

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