Macropterous (winged), Brachypterous (reduced-wing), and larval tobaccothrips on peanut (Arachis hypogaea) leaf.
Photograph courtesy Lenny WellsUniversity of Georgia, Coastal Plain Experiment StationDepartment of Plant Pathology, Tifton, GA 31794
Host: Frankliniella fusca; Tobacco thripsDisease name: Vector of spotted wilt diseasePathogen name: Tomato Spotted Wilt Tospovirus
Spotted wilt disease, caused by Tomato spotted wilt tospovirus (TSWV), serves as a continuing threat to the production of peanut, tobacco, tomato, and pepper in the southeastern United States. The tobacco thrips, Frankliniella fusca, along with the western flower thrips, Frankliniella occidentalis, are the major vectors of spotted wilt disease in the southeastern region. TSWV can be acquired by thrips only during the larval stage and is transmitted by adult thrips. Control of thrips does not necessarily control the disease itself. A key question concerning TSWV epidemics regards the source of viruliferous thrips responsible for primary infection of the crop. During the early spring a large proportion of the F. fusca population is brachypterous; however, these proportions are considerably reduced with the advent of warm temperatures and longer day length. The macropterous morph of the tobacco thrips is capable of flight and may enter the crop from an external weed source. Brachypterous thrips are incapable of flight, therefore suggesting that some populations of tobacco thrips develop and remain within a crop field throughout the year under appropriate conditions, providing a potential source of disease inoculum for emerging plants within the field itself.
APS publication number: IW000020
Picture your photograph as the APS Featured
Click here to find out more
License to Copy. This
notice hereby grants permission to APS users to copy the image featured for
noncommercial, personal use. All components of APSnet are copyrighted and may
not be reproduced or distributed except by express permission of APS. Copyright
is not claimed for material provided by United States government employees as
part of their work. APS copyright extends to images, text, graphics,
photographs, illustrations, audio, video, computer software, and all other
elements of the site.Instructions to Copy. For PC, position your mouse
cursor on the featured image, click the right mouse button, and choose "Save
Picture As..." or "Save this Image as..." whichever is the case. For Mac, click
the only mouse button and follow the same steps. Users may want to set up a
specific directory and file naming scheme for storing images; otherwise, they
will be saved using your system defaults. Images may be used in any software
application that supports JPEG file format or viewed in an Internet browser as
Get ALL the Latest Updates for ICPP2018: PLANT HEALTH IN A GLOBAL ECONOMY. Follow APS!