The 2005 ESA Annual Meeting and Exhibition
December 15-18, 2005
Ft. Lauderdale, FL

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Friday, December 16, 2005 - 2:42 PM
0592

Can Delphastus catalinae, a predator of whiteflies, survive mild winters?

Alvin M. Simmons, asimmons@saa.ars.usda.gov, USDA, ARS, U.S. Vegetable Laboratory, 2700 Savannah Highway, Charleston, SC and Jesusa C. Legaspi, jlegaspi@saa.ars.usda.gov, USDA ARS, CMAVE/FAMU CBC, Center for Biological Control, 6383 Mahan Dr, Tallahassee, FL.

Delphastus catalinae (Horn) (Coleoptera: Coccinellidae) is an obligate whitefly predator which is native to Colombia, South America. Feral populations are now found in Central America, Southern Florida, Southern California, and some other warm weather locations. One of its host is the B-biotype sweetpotato whitefly, Bemisia tabaci. This whitefly survives areas such as Coastal South Carolina and Northern Florida where the winters are mild, but with brief times of freezing temperatures. Very little has been reported about the overwintering range and the impact of climate on the population dynamics of D. catalinae. A study was conducted to determine the ability of D. catalinae, to survive mild winters.


Species 1: Coleoptera Coccinellidae Delphastus catalinae
Species 2: Hemiptera Aleyrodidae Bemisia tabaci (Sweetpotato whitefly)
Keywords: Biological Control, Temperature Impacts

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