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Monday, 15 November 2004 - 3:00 PM
0023
Effect of temperature on survival and predation of Delphastus catalinae, a predator of whiteflies
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) is a whitefly predator which has shown promise to help in pest management schemes. The influence of constant temperature on the survival of adult and pupae D. catalinae was determined in the laboratory when provided eggs and nymphs of the B-biotype Bemisia tabaci. The lower and upper thresholds for survival of the predator was around 0C and 40C when exposed for 24 h of test temperatures. Predation increased with temperatures of 14 to 30C.
Species 1: Coleoptera Coccinellidae Delphastus catalinae
Species 2: Homoptera Aleyrodidae Bemisia tabaci (Sweetpotato whitefly)
Keywords: biological control, vegetable insects
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