Abundance, diversity and geographic distribution of cassava mosaic disease pandemic-associated Bemisia tabaci in Tanzania

Bemisia tabaci (Gennadius) (Homoptera: Aleyrodidae), one of the most economically important agricultural pests worldwide, is the vector of cassava mosaic geminiviruses that cause cassava mosaic disease (CMD). In East and Central Africa, a severe CMD pandemic that spread from Uganda in the late 1980s...

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Autores principales: Tajebe, L., Boni, S.B., Guastella, D., Cavalieri, V., Lund, O., Rugumamu, C.P., Rapisarda, Carmelo, Legg, James P.
Formato: Journal Article
Lenguaje:Inglés
Publicado: Wiley 2015
Materias:
Acceso en línea:https://hdl.handle.net/10568/76354
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author Tajebe, L.
Boni, S.B.
Guastella, D.
Cavalieri, V.
Lund, O.
Rugumamu, C.P.
Rapisarda, Carmelo
Legg, James P.
author_browse Boni, S.B.
Cavalieri, V.
Guastella, D.
Legg, James P.
Lund, O.
Rapisarda, Carmelo
Rugumamu, C.P.
Tajebe, L.
author_facet Tajebe, L.
Boni, S.B.
Guastella, D.
Cavalieri, V.
Lund, O.
Rugumamu, C.P.
Rapisarda, Carmelo
Legg, James P.
author_sort Tajebe, L.
collection Repository of Agricultural Research Outputs (CGSpace)
description Bemisia tabaci (Gennadius) (Homoptera: Aleyrodidae), one of the most economically important agricultural pests worldwide, is the vector of cassava mosaic geminiviruses that cause cassava mosaic disease (CMD). In East and Central Africa, a severe CMD pandemic that spread from Uganda in the late 1980s still continues to devastate cassava crops. To assess the association of distinct B. tabaci genetic groups with the CMD pandemic, mitochondrial cytochrome oxidase I gene sequences were analysed from whiteflies collected during surveys conducted from 2010 to 2013 in Tanzania. Four genetic groups – Sub-Saharan Africa 1 (SSA1), Mediterranean, Indian Ocean and East Africa 1, and a group of unknown whitefly species were identified. SSA1 comprised four subgroups: SSA1-SG1, SSA1-SG2, SSA1-SG1/2 and SSA1-SG3. SSA1-SG1 was confined to the pandemic-affected north-western parts of Tanzania whilst SSA1-SG2 and SSA1-SG3 were found in the central and eastern parts not yet affected by the pandemic. The CMD pandemic front was estimated to lie in Geita Region, north-western Tanzania, and to be spreading south-east at a rate of ca 26 km/year. The pandemic-associated B. tabaci SSA1-SG1 predominated up to 180 km ahead of the CMD front indicating that changes in whitefly population characteristics precede changes in disease characteristics.
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spelling CGSpace763542023-09-09T18:59:40Z Abundance, diversity and geographic distribution of cassava mosaic disease pandemic-associated Bemisia tabaci in Tanzania Tajebe, L. Boni, S.B. Guastella, D. Cavalieri, V. Lund, O. Rugumamu, C.P. Rapisarda, Carmelo Legg, James P. cassava bemisia tabaci aleyrodidae whiteflies Bemisia tabaci (Gennadius) (Homoptera: Aleyrodidae), one of the most economically important agricultural pests worldwide, is the vector of cassava mosaic geminiviruses that cause cassava mosaic disease (CMD). In East and Central Africa, a severe CMD pandemic that spread from Uganda in the late 1980s still continues to devastate cassava crops. To assess the association of distinct B. tabaci genetic groups with the CMD pandemic, mitochondrial cytochrome oxidase I gene sequences were analysed from whiteflies collected during surveys conducted from 2010 to 2013 in Tanzania. Four genetic groups – Sub-Saharan Africa 1 (SSA1), Mediterranean, Indian Ocean and East Africa 1, and a group of unknown whitefly species were identified. SSA1 comprised four subgroups: SSA1-SG1, SSA1-SG2, SSA1-SG1/2 and SSA1-SG3. SSA1-SG1 was confined to the pandemic-affected north-western parts of Tanzania whilst SSA1-SG2 and SSA1-SG3 were found in the central and eastern parts not yet affected by the pandemic. The CMD pandemic front was estimated to lie in Geita Region, north-western Tanzania, and to be spreading south-east at a rate of ca 26 km/year. The pandemic-associated B. tabaci SSA1-SG1 predominated up to 180 km ahead of the CMD front indicating that changes in whitefly population characteristics precede changes in disease characteristics. 2015-09 2016-08-09T09:01:13Z 2016-08-09T09:01:13Z Journal Article https://hdl.handle.net/10568/76354 en Limited Access Wiley Tajebe, L.S., Boni, S.B., Guastella, D., Cavalieri, V., Lund, O.S., Rugumamu, C.P., ... & Legg, J.P. (2015). Abundance, diversity and geographic distribution of cassava mosaic disease pandemic‐associated Bemisia tabaci in Tanzania. Journal of Applied Entomology, 139(8), 627-637.
spellingShingle cassava
bemisia tabaci
aleyrodidae
whiteflies
Tajebe, L.
Boni, S.B.
Guastella, D.
Cavalieri, V.
Lund, O.
Rugumamu, C.P.
Rapisarda, Carmelo
Legg, James P.
Abundance, diversity and geographic distribution of cassava mosaic disease pandemic-associated Bemisia tabaci in Tanzania
title Abundance, diversity and geographic distribution of cassava mosaic disease pandemic-associated Bemisia tabaci in Tanzania
title_full Abundance, diversity and geographic distribution of cassava mosaic disease pandemic-associated Bemisia tabaci in Tanzania
title_fullStr Abundance, diversity and geographic distribution of cassava mosaic disease pandemic-associated Bemisia tabaci in Tanzania
title_full_unstemmed Abundance, diversity and geographic distribution of cassava mosaic disease pandemic-associated Bemisia tabaci in Tanzania
title_short Abundance, diversity and geographic distribution of cassava mosaic disease pandemic-associated Bemisia tabaci in Tanzania
title_sort abundance diversity and geographic distribution of cassava mosaic disease pandemic associated bemisia tabaci in tanzania
topic cassava
bemisia tabaci
aleyrodidae
whiteflies
url https://hdl.handle.net/10568/76354
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