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ARS Home » Research » Publications at this Location » Publication #102471
Title: SELECTIVITY OF CC TRAP CATCHES OF WHITEFLY ADULTS AND WHITEFLY PARASITES ERETMOCERUS EREMICUS AND ERETMOCERUS EMIRATUS

Author
item Chu, Chang Chi
item Jackson, Charles
item NATWICK, ERIC - COOP. RES EXT, HOLTVILLE
item Henneberry, Thomas
item SIMMONS, GREG - USDA-APHIS, BRAWLEY, CA

Submitted to: National Research and Action Plan for Silver Leaf Whitefly
Publication Type: Abstract Only
Publication Acceptance Date: 5/15/1999
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Studies were conducted to compare silverleaf whitefly and whitefly parasite catches with CC traps and yellow sticky card traps in greenhouses. Cantaloupe and watermelon plants were raised in three greenhouses in soil- mix plastic container from February to April. Five 3 x 5 inch yellow sticky card traps with both side exposed and five yellow trap base CC traps swere installed in each greenhouse within 50 cm apart. Whitefly adults and Eretmocerus eremicus were released in the greenhouses periodically. Few adult whiteflies and E. eremicus adults were caught in CC traps compared with yellow sticky card traps. This probably occurred because of the close proximity and competition for catches between the two trap types. In 1998, eight cloth-covered cages were placed in a large greenhouse. The 4 cage treatments were: no traps, 2 yellow trap base CC traps, 2 yellow sticky card traps with one surface exposed, and 2 yellow base CC traps plus 2 yellow sticky card traps were placed 6 or more ft apart. Whitefly adults and E. emiratus adults were released periodically. Parasite to whitefly adult catch ratios were 6.9 and 0.5 for yellow sticky card traps and CC traps in individual cages. The parasite to whitefly adult catches were 3.5 and 0.3, respectively. Results indicate the potential of using CC traps for adult greenhouse whitefly control in combination with parasites releases for whitefly nymph control.