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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.

The need to evaluate non-target effects of classical biological control of arthropod pests has received considerable attention in recent years. We determined with repeated field surveys the changes in abundance and distribution of the phytoseiid mite fauna in cassava fields resulting from the int...


Zannou, I.D.Hanna, R.Agboton, B.Moraes, G.J. deKreiter, S.Phiri, G.Jone, A.[Native phytoseiid mites as indicators of non-target eVects of the introduction of Typhlodromalus aripo for the biological control of cassava green mite in Africa]Native phytoseiid mites as indicators of non-target eVects of the introduction of Typhlodromalus aripo for the biological control of cassava green mite in 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

Two Brazilian isolates and one Benin (indigenous) isolate of Neozygites floridana were released against the cassava green mite, Mononychellus tanajoa , in January 1999 in the Adjohoun district, Ouémé administrative region, Republic of Benin. Post-release monitoring conducted 8, 14, 22 and 36 week...


Hountondji, F.C.C.Lomer, C.Hanna, R.Cherry, A.Dara, S.K.[Field Evaluation of Brazilian isolates of Neozygites foridana (Entomophthorales: Neozygitaceae) for the microbial control of cassava green mite in Benin, West Africa]Field Evaluation of Brazilian isolates of Neozygites foridana (Entomophthorales: Neozygitaceae) for the microbial control of cassava green mite in Benin, West Africa

It is well known that plant-inhabiting predators use herbivore-induced plant volatiles to locate herbivores being their prey. Much less known, however, is the phenomenon that genotypes of the same host plant species vary in the attractiveness of these induced chemical signals, whereas they also d...


Onzo, A.Hanna, R.Sabelis, M.W.[The predatory mite Typhlodromalus aripo prefers greenmite induced plant odours from pubescent cassava varieties]The predatory mite Typhlodromalus aripo prefers greenmite induced plant odours from pubescent cassava varieties

The attraction of the predatory mites, Typhlodromalus manihoti and Typhlodromalus aripo, to the host plant-spider mite complex, Manihot esculenta–Mononychellus tanajoa, was investigated with a Y-tube olfactometer. Factors examined included predator starvation period, several combinations of cassa...


Gnanvossou, D.Hanna, R.Dicke, M.Yaninek, S.[Attraction of the predatory mites Typhlodromalus manihot and Typhlodromalus aripo to cassava plants infested by cassava green mite]Attraction of the predatory mites Typhlodromalus manihot and Typhlodromalus aripo to cassava plants infested by cassava green mite

Typhlodromalus manihoti and Typhlodromalus aripo are exotic predators of the cassava green mite Mononychellus tanajoa in Africa. In an earlier paper, we showed that the two predators were attracted to odors from M. tanajoa-infested cassava leaves. In addition to the key prey species, M. tanajoa, ...


Gnanvossou, D.Hanna, R.Dicke, M.[Prey-related odor preference of the predatory mites Typhlodromalus manihoti and Typhlodromalus aripo (Acari: Phytoseiidae)]Prey-related odor preference of the predatory mites Typhlodromalus manihoti and Typhlodromalus aripo (Acari: Phytoseiidae)

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