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Some Fungal Pathogens of the Cassava Green Spider Mites Mononychellus spp. (Tetranychidae) in Kenya

Published online by Cambridge University Press:  19 September 2011

J. Bartkowski ,
M. O. Odindo  and
W. A. Otieno
J. Bartkowski
Affiliation:
ICIPE Mbita Point Field Station, P.O. Box 30, Mbita, South Nyanza, Kenya
M. O. Odindo
Affiliation:
ICIPE Mbita Point Field Station, P.O. Box 30, Mbita, South Nyanza, Kenya
W. A. Otieno
Affiliation:
ICIPE Mbita Point Field Station, P.O. Box 30, Mbita, South Nyanza, Kenya
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Abstract

Preliminary investigations have shown the presence of pathogenic fungi in natural populations of the cassava green spider mites. Among others, Entomopthora sp. and Hirsutella sp. were isolated from dead mites sampled from the field. Laboratory bioassays have given mite mortality of up to 60%, indicating the possibility of utilizing some of these pathogens in mite control. Tests with Beauveria bassiana, isolated from lepidopteran pests, have also shown that the mite is susceptible to this fungus.

Résumé

Des études préliminaires ont montré, la présence de champignons pathogènes, dans des populations naturelles d'acariens (verts) du manioc. Entre autres, Entomopthora sp. et Hirsutella sp. ont été isolés des échantillons d'acariens (verts) morts prélevés sur le terrain. Des études en laboratoire ont montré un taux de mortalité allant jusqu'à 60%; ce qui suggère la possibilité de l'utilisation de certains champignons pathogènes, dans le contrôle d'acariens. Des tests réalisés avec Beauverua bassiana isolé des Lépidoptères ravageurs ont également montré que l'acarien (vert) est sensible à ce champignon.

Keywords

Cassava green spider mitepathogenic fungiKenyaAcarien (vert)maniocchampignon pathogèneKenya
Type
Research Article
Information
International Journal of Tropical Insect Science , Volume 9 , Issue 4 , August 1988 , pp. 457 - 459
Copyright
Copyright © ICIPE 1988

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References

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