Florida Entomologist (2009) 92, 450-457

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W.A. Overholt, R. Diaz, K.L. Hibbard, A.L. Roda, D. Amalin, A.J. Fox, S.D. Hight, J.C. Medal, P.A. Stansly, B. Carlisle, J.H. Walter, P.J. Hogue, L.A. Gary, L.F. Wiggins, C.L. Kirby and S.C. Crawford (2009)
Releases, distribution and abundance of Gratiana boliviana (Coleoptera: Chrysomelidae), a biological control agent of tropical soda apple (Solanum viarum, Solanaceae) in Florida
Florida Entomologist 92 (3), 450-457
Abstract: From 2003 to 2008, 176,643 Gratiana boliviana, Spaeth (Coleoptera: Chrysomelidae) were released in Florida as part of a biological control program targeting tropical soda apple (TSA) Solarium viarum Dunal (Solanaceae). The spatial distribution of releases was clustered with more beetles released in south/central Florida than further north. A survey conducted in the fall of 2008 found G. bolviana present at >70% of randomly selected locations between 26° and 29° latitude, but no beetles were found at sites further north. The presence of beetles and beetle damage were associated with smaller TSA plants and fewer fruits per plant. The absence of beetles in northern Florida may be due to the fewer number released in that area, but also could be influenced by land cover and climate.
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Full text of article
Database assignments for author(s): William A. Overholt, Philip A. Stansly, Rodrigo Diaz, Julio C. Medal, Divina M. Amalin, Stephen D. Hight

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
classical biocontrol/new introduction


Pest and/or beneficial records:

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


Solanum viarum (weed) U.S.A. (SE)
Gratiana boliviana (weed bioagent) Solanum viarum (weed) U.S.A. (SE)