BioControl (2008) 53, 787-796

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Ana Clara Scorsetti, Richard A. Humber, Carolina De Gregorio and Claudia C. López Lastra (2008)
New records of entomopathogenic fungi infecting Bemisia tabaci and Trialeurodes vaporariorum, pests of horticultural crops, in Argentina
BioControl 53 (5), 787-796
Abstract: The whiteflies Bemisia tabaci (Gennadius) and Trialeurodes vaporariorum (Westwood) (Hemiptera: Aleyrodidae) are major crop pests throughout the world. Although extensive research about biological control of whitefly by parasitoids and predators has been conducted, also entomopathogenic fungi can be considered as potential biological control agents. Surveys for entomopathogenic fungi were carried out in organic and conventional horticultural crops in greenhouses and open fields in Buenos Aires and Corrientes provinces, Argentina. These surveys resulted in the recovery and isolation of the following fungi from whiteflies: Lecanicillium lecanii (Zimmerm.) Zare and W. Gams, L. muscarium (Petch) Zare and W. Gams, L. longisporum (Petch) Zare and W. Gams, Isaria fumosorosea Wize and I. javanica (Frieder. and Bally) Samson and Hywel-Jones. Pathogenicity tests were conducted against T. vaporariorum nymphs using a conidial suspension (1 × 107 conidia/ml) of the fungi. A mortality rate between 26.6% and 76.6% was obtained at 7 days post-infection. These are the first records of natural infections in the southernmost region of the South American continent of L. lecanii, L. muscarium, L. longisporum and Isaria javanica (Ascomycota: Hypocreales) on T. vaporariorum and also the first report of I. fumosorosea on B. tabaci.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Ana C. Scorsetti, Richard A. Humber

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
surveys/distribution/isolation


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Bemisia tabaci Argentina
Trialeurodes vaporariorum Argentina
Isaria fumosorosea (entomopathogen) Bemisia tabaci Argentina
Lecanicillium muscarium (entomopathogen) Trialeurodes vaporariorum Argentina
Lecanicillium longisporum (entomopathogen) Trialeurodes vaporariorum Argentina
Isaria javanica (entomopathogen) Trialeurodes vaporariorum Argentina