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In Benin, the tarsonemid mite  Polyphagotarsonemus latus  (Banks) (Prostigmata: Tarsonemidae) is a key pest of gboma eggplant  Solanum macrocarpon  (L.) (Solanales: Solanaceae), a leafy vegetable on which it causes considerable damage to the plants and substantial reduction in yield. Predatory mites in the family Phytoseiidae have been successfully used in the biological control of numerous agricultural pests worldwide. In that respect, a population of the phytoseiid mite  Amblyseius swirskii  (Athias-Henriot) (Mesostigmata: Phytoseiidae) has been identified as a potential predator of  P .  latus , and is now a candidate for release against this pest in Benin. The objective of the present study is to determine, through laboratory experiments, the predation rate and life table parameters of  A .  swirskii  when feeding on  P .  latus  or alternative food such as maize pollen. Under laboratory conditions the mean number of  P .  latus  consumed by  A .  swirskii , and daily oviposition, significantly increased as the number of prey increased. Total development time of  A .  swirskii  was significantly shorter when it fed on  P .  latus  than on maize pollen. Net reproduction rate, intrinsic rate of increase, mean generation time and the finite rate of increase of  A .  swirskii  were were all significantly lower on  P .  latus  than on maize pollen. However, doubling time was significantly higher on maize pollen. This study shows that  A .  swirskii  is a good predator of  P .  latus , and that maize pollen can efficiently sustain  A .  swirskii  populations when  P .  latus  densities on plants become low. Consequently,  A .  swirskii  can be used for the biological control of the broad mite  P .  latus  on gboma eggplant, and on other solanaceous crops in Benin and elsewhere.

journal of insect science

Potential of the predatory mite,Amblyseius swirskiito suppress the Broad Mite,Polyphagotarsonemus latuson the Gboma Eggplant,Solanum macrocarpon