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| Bemisia tabaci Biotype Dynamics and Resistance to Insecticides in Israel During the Years 2008-2010 |
| Svetlana Kontsedalov, Fauzi Abu-Moch, Galina Lebedev, Henryk Czosnek, A Rami Horowitz , MuradGhanim |
1.Department of Entomology, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
2.Institute of Plant Sciences, Faculty of Agriculture, Rehovot 76100, Israel
3.Department of Entomology, Agricultural Research Organization, Gilat Research Center, M.P. Negev 85280, Israel |
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摘要 The sweetpotato whitefly Bemisia tabaci (Hemiptera: Aleyrodidae) is an extremely polyphagous insect pest that causes significant crop losses in Israel and worldwide. B. tabaci is a species complex of which the B and Q biotypes are the most widespread and damaging worldwide. The change in biotype composition and resistance to insecticide in Israel was monitored during the years 2008-2010 to identify patterns in population dynamics that can be correlated with resistance outbreaks. The results show that B biotype populations dominate crops grown in open fields, while Q biotype populations gradually dominate crops grown in protected conditions such as greenhouses and nethouses, where resistance outbreaks usually develop after several insecticide applications. While in previous years, Q biotype populations were widely detected in many regions in Israel, significant domination of the B biotype across populations collected was observed during the year 2010, indicating the instability of the B. tabaci population from one year to another. Reasons for the changing dynamics and the shift in the relative abundance of B. tabaci biotype, and their resistance status, are discussed.
Abstract The sweetpotato whitefly Bemisia tabaci (Hemiptera: Aleyrodidae) is an extremely polyphagous insect pest that causes significant crop losses in Israel and worldwide. B. tabaci is a species complex of which the B and Q biotypes are the most widespread and damaging worldwide. The change in biotype composition and resistance to insecticide in Israel was monitored during the years 2008-2010 to identify patterns in population dynamics that can be correlated with resistance outbreaks. The results show that B biotype populations dominate crops grown in open fields, while Q biotype populations gradually dominate crops grown in protected conditions such as greenhouses and nethouses, where resistance outbreaks usually develop after several insecticide applications. While in previous years, Q biotype populations were widely detected in many regions in Israel, significant domination of the B biotype across populations collected was observed during the year 2010, indicating the instability of the B. tabaci population from one year to another. Reasons for the changing dynamics and the shift in the relative abundance of B. tabaci biotype, and their resistance status, are discussed.
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Received: 01 March 2011
Accepted:
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| Fund: This is contribution No. 503/11 from the Agricultural Research Organization, the Volcani Center, Bet Dagan, Israel. |
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Corresponding Authors:
Correspondence Murad Ghanim, Tel: +973-3-968391, Fax: +972-3-9683445, E-mail: ghanim@agri.gov.il
E-mail: ghanim@agri.gov.il
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Cite this article:
Svetlana Kontsedalov, Fauzi Abu-Moch, Galina Lebedev, Henryk Czosnek, A Rami Horowitz , MuradGhanim .
2012.
Bemisia tabaci Biotype Dynamics and Resistance to Insecticides in Israel During the Years 2008-2010. Journal of Integrative Agriculture, 11(2): 312-320.
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