Effect of contact pesticides on vine mealybug parasitoids, Anagyrus sp. near pseudococci (Girault) and Coccidoxenoides perminutus (Timberlake) (Hymenoptera: Encyrtidae)

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dc.contributor.author Mgocheki, N.
dc.contributor.author Addison, P.
dc.date.accessioned 2011-04-01T13:55:06Z
dc.date.available 2011-04-01T13:55:06Z
dc.date.issued 2009-08
dc.identifier.citation Mgocheki, N., & Addison, P. 2009. Effect of contact pesticides on vine mealybug parasitoids, Anagyrus sp. near pseudococci (Girault) and Coccidoxenoides perminutus (Timberlake) (Hymenoptera: Encyrtidae), S. Afr. J. Enol. Vitic., 30(2), 110-116, http://www.sasev.org/
dc.identifier.issn 0253-939X (Online Version)
dc.identifier.uri http://hdl.handle.net/10019.1/8423
dc.description The original publication is available at http://www.sasev.org/.
dc.description.abstract Anagyrus species near pseudococci (Girault) and Coccidoxenoides perminutus (Timberlake) (Hymenoptera: Encyrtidae) are well-known mealybug parasitoids. Both are proven biological control agents of Planococcus ficus (Signoret) (Hemiptera: Pseudococcidae) in vineyards. These parasitoids are affected by some pesticides used for the control of ants (Hymenoptera: Formicidae) and P. ficus in vineyards. To establish which of the vineyard pesticides is more toxic to parasitoids, pesticide bioassays were carried in the laboratory using adult and pupal parasitoids. Fipronil and α-cypermethrin caused significant acute toxicity of both parasitoids. Low mortality was recorded for all these pesticides for parasitoids emerging from mummies indicating that the mummy case was an effective barrier to pesticides for parasitoids. Buprofezin, mancozeb and an insecticidal soap were not toxic to parasitoids in both bioassays. Some pesticides have far-reaching negative impacts on parasitoids of orchard and vineyard arthropod pests. A refinement on pest management strategies regarding method and timing of application of pesticides where parasitoids constitute part of the pest management program is essential.
dc.format.extent p. 110-116
dc.language.iso en_ZA
dc.publisher SASEV
dc.subject Anagyrus sp. near pseudococci (Girault) en_ZA
dc.subject Coccidoxenoides perminutus (Timberlake) (Hymenoptera: Encyrtidae) en_ZA
dc.subject Contact pesticides en_ZA
dc.title Effect of contact pesticides on vine mealybug parasitoids, Anagyrus sp. near pseudococci (Girault) and Coccidoxenoides perminutus (Timberlake) (Hymenoptera: Encyrtidae)
dc.type Article
dc.description.version Publishers' version
dc.rights.holder SASEV


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