The 2005 ESA Annual Meeting and Exhibition
December 15-18, 2005
Ft. Lauderdale, FL

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Friday, December 16, 2005 - 8:30 AM
0265

A tale of two genes: cadherin and mitochondrial cytochrome oxidase I of the pink bollworm

Devika C. Unnithan, dunnitha@email.arizona.edu1, Bruce E. Tabashnik, brucet@Ag.arizona.edu1, Yves Carrière, ycarrier@ag.arizona.edu1, and Shai Morin, morin@agri.huji.ac.il2. (1) University of Arizona, Department of Entomology, Forbes Bldg Rm 410, Tucson, AZ, (2) The Hebrew University of Jerusalem, Department of Entomology, Faculty of Agriculture, Jerusalem, Israel

We analyzed global genetic variation in pink bollworm, Pectinophora gossypiella, using DNA sequences of a nuclear gene (cadherin) and a mitochondrial gene (cytochrome oxidase I, also known as mtCOI). Populations from the USA, Mexico, Australia, India, Pakistan, and Israel were studied. The mtCOI gene was less variable than the cadherin gene. All populations were screened for cadherin alleles associated with resistance to the bacterial toxin Cry1Ac, which is produced by transgenic cotton plants. Implications for the geographic origin and phylogeographic structure of pink bollworm, and for evolution of resistance to Cry1Ac will be discussed.


Species 1: Lepidoptera Gelechiidae Pectinophora gossypiella (pink bollworm)
Keywords: Phylogeography

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