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Settling preference of the whitefly Bemisia tabaci (Hemiptera: Aleyrodidae) on healthy versus cotton leaf curl virus-infected cotton plants

Published online by Cambridge University Press:  01 June 2009

Rajinder S. Mann ,
Jagtar S. Sidhu  and
Nachatar S. Butter
Rajinder S. Mann*
Affiliation:
University of Florida, Gainesville, FL32611-0620, USA
Jagtar S. Sidhu
Affiliation:
Punjab Agricultural University, Ludhiana, Punjab141 004, India
Nachatar S. Butter
Affiliation:
Punjab Agricultural University, Ludhiana, Punjab141 004, India
*
*E-mail: [email protected]
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Abstract

Cotton leaf curl disease, a viral infection vectored by the whitefly Bemisia tabaci (Gennadius), is a major threat to the cotton industry in India and Pakistan. We examined the settling preferences of B. tabaci adults on infected versus healthy cotton plants under choice conditions. For experiments with plants at 20 and 35 days post-inoculation (DPI), whiteflies preferentially settled on healthy cotton plants after 8 and 1 h of release, respectively. Whiteflies, however, were unable to discriminate between virus-infected and healthy cotton plants at 5 DPI. Our results suggest that whiteflies' preference for healthy plants compared with diseased plants can lead to rapid virus spread in the field, resulting in higher crop losses.

Keywords

whiteflyBemisia tabacichoice experimentcotton leaf curl virusGossypium hirsutum
Type
Research Paper
Information
International Journal of Tropical Insect Science , Volume 29 , Issue 2 , June 2009 , pp. 57 - 61
Copyright
Copyright © ICIPE 2009

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