1921
Volume 76, Issue 1
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645

Abstract

Studies aimed at monitoring the spread of knockdown resistance to pyrethroids () in time and space are particularly useful for detecting barriers to gene flow among the chromosomal and molecular forms of . We used a recently developed polymerase chain reaction assay to estimate changes in frequency that occurred in several mixed-form populations from Mali, West Africa, in the past decade. We found that the allele significantly increased in frequency in most populations but was still absent from the M molecular form. Importantly, within the S molecular form, was detected for the first time in the Bamako chromosomal form. These results provide important insights on the patterns of spread and emergence of pyrethroid knockdown resistance in West Africa.

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  • Received : 19 Dec 2005
  • Accepted : 06 Feb 2006

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