Submitted to: Society for Invertebrate Pathology Annual Meeting Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 8/15/2003
Publication Date: 8/15/2003
Citation: UGINE, T.A., WRAIGHT, S.P., SANDERSON, J.P. INTERACTIONS BETWEEN IMPATIENS POLLEN, BEAUVERIA BASSIANA AND ADULT FEMALE WESTERN FLOWER THRIPS (FRANKLINIELLA OCCIDENTALIS). PROCEEDINGS OF THE ANNUAL MEETING OF THE SOCIETY FOR INVERTEBRATE PATHOLOGY. 2003. v. 36. p. 49.
Technical Abstract: Pollens have been demonstrated to increase the fecundity of various species of thrips. Gerin et al. (J. Appl. Entomol. 123, 569-574, 1999) established that populations of the Western flower thrips (WFT), Frankliniella occidentalis, in crops of garden impatiens, Impatiens wallerana, grow at a significantly slower rate when flowers are not present. Previous research conducted by Ugine et al. (unpublished) demonstrated that female thrips strongly prefer impatiens flowers that contain pollen. When using slow acting pathogens like the fungus Beauveria bassiana, which can achieve up to 85% mortality under optimal conditions in the laboratory, it becomes essential to know what impact pollen has on daily and lifetime fecundity as well as longevity of female thrips. A factorial experiment was conducted to test the effects of pollen versus no pollen in the presence or absence of B. bassiana. Pollen significantly increased lifetime fecundity of female thrips, and exposure to B. bassiana significantly decreased longevity and fecundity of adult female thrips.