First record of spiraling whitefly in coastal Kenya: Emergence, host range, distribution and association with cassava brown streak virus disease

Unconfirmed reports of a spiraling whitefly-like pest suspected to be contributing to high cassava brown streak disease (CBSD) incidences on cassava prompted a study to determine its presence and importance in coastal Kenya. Multistage sampling was conducted to determine occurrence and distribution...

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Bibliographic Details
Published in:International journal of agriculture and biology 2010-05, Vol.12 (3), p.411-415
Main Authors: Mware, B. (University of Nairobi (Kenya). Dept. of Plant Science and Crop Protection), Olubayo, F. (University of Nairobi (Kenya). Dept. of Plant Science and Crop Protection), Narla, R. (University of Nairobi (Kenya). Dept. of Plant Science and Crop Protection), Songa, J. (Kenya Agricultural Research Inst., Nairobi (Kenya)), Amata, R. (Kenya Agricultural Research Inst., Nairobi (Kenya)), Kyamanywa, S. (Makerere Univ., Kampala (Uganda). Faculty of Agriculture), Ateka, E.M. (Jomo Kenyatta University of Agriculture and Technology, Nairobi (Kenya). Dept. of Horticulture)
Format: Article
Language:English
Subjects:
ALEUROCANTHUS
CASSAVA
EMERGENCE
HOSTS
IDENTIFICATION
KENYA
MORBIDITY
PEST INSECTS
PEST SURVEYS
PLANT VIRUSES
POPULATION DISTRIBUTION
SPECIES
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Summary:Unconfirmed reports of a spiraling whitefly-like pest suspected to be contributing to high cassava brown streak disease (CBSD) incidences on cassava prompted a study to determine its presence and importance in coastal Kenya. Multistage sampling was conducted to determine occurrence and distribution of the whitefly, Aleurodicus dispersus (Homoptera, Aleyrodidae) in relation to CBSD incidence in popular cassava cultivars in four cassava growing districts of coastal Kenya. A. dispersus has a wide host range (56) of different food crops, fruit trees, shade trees, ornamentals, weeds and vegetables. CBSD was prevalent in all the districts surveyed with highest incidence being in Msambweni (79.4%) followed by Kwale (68.3%) and Kilifi 64.0%, whereas the lowest (42.8%) prevalence was reported in Kaloleni district. There was a significant positive correlation (r=+0.5189, p
ISSN:1560-8530
1814-9596