Tuesday, 16 November 2004 - 8:12 AM
0682

A Peruvian biotype of Thrips tabaci (Thysanoptera: Thripidae) imported to the Vidalia onion production area: Will it establish as a new vector?

David G. Riley, dgr@tifton.uga.edu, University of Georgia, Department of Entomology, Coastal Plain Experiment Station, Rainwater Rd, Tifton, GA and Alton N. Sparks, asparks@uga.edu, University of Georgia, Entomology, PO Box 1209, Tifton, GA.

Thrips tabaci was imported live on onions grown in Peru destined for processors located in the Vidalia onion production area of Georgia. This new biotype to Georgia carried an onion-strain of Tomato spotted wilt virus (TSWV) and Iris yellow spot virus (IYSV). TSWV has been in Georgia for many years, but only coincidentally with this thrips importation has it been detected in onion plants in Georgia. Also, IYSV has been newly detected in the Vidalia onion area. Both of these viruses occur as a severe problem in Peru where the onions were produced that carried Thrips tabaci in the importation process. Laboratory competition studies suggest that this thrips biotype will establish itself along with the Frankliniella spp. currently predominant in Georgia winter onions.


Species 1: Thysanoptera Thripidae Thrips tabaci (onion thrips)
Species 2: Thysanoptera Thripidae Frankliniella fusca (tobacco thrips)
Species 3: Thysanoptera Thripidae Frankliniella occidentalis (westernflower thrips)
Keywords: exotic pest

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