Journal of Pest Science (2010) 83, 409-420

Mushtaq Ahmad, M. Iqbal Arif and Muhammad Naveed (2010)
Dynamics of resistance to organophosphate and carbamate insecticides in the cotton whitefly Bemisia tabaci (Hemiptera: Aleyrodidae) from Pakistan
Journal of Pest Science 83 (4), 409-420
Abstract: Field populations of adult whiteflies, Bemisia tabaci, from Pakistan were monitored from 1992 to 2007 for their susceptibility to seven organophosphate and three carbamate insecticides using a leaf-dip method. Malathion, quinalphos and chlorpyrifos generally exhibited no or a very low level of resistance in B. tabaci over a 16-year monitoring period. Resistance to profenofos, triazophos, parathion-methyl and ethion was usually low to high up to 1995, and then it dropped to very low levels during 1996-2004. Resistance levels again picked up from low to moderate levels for triazophos during 2005-2007, for parathion-methyl during 2003-2007, and for ethion in 2006. Among carbamates, thiodicarb resistance was high during 1994-1996, which dropped to moderate levels in 1997 and 1998 and to very low levels during 1999-2001, but again increased from low to high levels during 2002-2007. Methomyl resistance was moderate in 1994 and 1995, which dropped to very low levels during 1996-2002, and then increased to low levels during 2003-2007. Butocarboxim resistance remained very low during 1994-2003 and then increased from low to high levels during 2004-2007. The insecticides exhibiting no, very low or low resistance, and no cross-resistance among themselves can be exploited in devising an insecticide resistance management strategy to combat whitefly resistance in the field.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Mushtaq Ahmad, Muhammad Naveed

Research topic(s) for pests/diseases/weeds:
pesticide resistance of pest

---

Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Bemisia tabaci		Pakistan