|Chu, Chang chi|
Submitted to: Caribbean Food Crops Society Proceedings
Publication Type: Proceedings
Publication Acceptance Date: 11/1/2004
Publication Date: 2/1/2005
Citation: Ciomperlik, M.A., Richards, M., Chu, C., Cohen, C. 2005. Field trials testing the efficacy of 'cc traps' for detecting and monitoring scirtothrips dorsalis (hood) in hot peppers in st vincent. Caribbean Food Crops Society Proceedings 40: 106-113. Interpretive Summary: Thrip traps were developed upon the request of APHIS for detecting the invasive chili thrips. The tests were conducted in Arizona on western flower thrips showed that the inclusion of a small pieces of Vapona cube in a CC trap increased the catches by 4.6 times compared with no Vapona inclusion. Results of verification of the developed traps in Taiwan showed that the developed CC trap caught 0.07 chili thrips /trap /week in a lemon tree.
Technical Abstract: Studies were conducted to develop thrips for detecting and identifying Scirtothrips dorsalis (Hood). Traps were developed in Arizona where Frankliniella occidentalis (Pergande) were established in the field and tested in southern Taiwan where S. dorsalis were found. Addition of one square centimeter of dicholorovos pest strip as a killing agent in a CC trap increased F. occidentalis by 460%. The increased thrips catches are attributed to increased mortality and retention of thrips that entered into the trap as opposed to increased attractiveness. Average CC trap catches in Taiwan was 0.07 S. dorsalis per trap per week. USDA, APHIS guidelines suggested to survey one square mile area with 2,280 CC traps when one or more S. dorsalis adults at the original infested sites. Thus, 160 S. dorsalis adults would caught per CC traps per week under conditions similar to that in Taiwan. Addition of ethylene glycol helps preserve the thrips for identification.