Cuticular hydrocarbon geographic variation among seven North American populations of Aedes albopictus (Diptera: Culicidae)
1991
Kruger, E.L. | Pappas, C.D. | Howard, R.W.
Cuticular hydrocarbons were used to differentiate among the following North American populations of Aedes albopictus: Chicago, Ill.; Milford, Del.; Jacksonville, Fla.; San Antonio, Tex.; New Orleans, La.; Houston, Tex.; and Lexington, Ky. Forty cuticular hydrocarbon peaks were identified from each population using gas chromatography electron impact-mass spectrometry: 16 n-alkanes, 21 monomethylalkanes, and 3 dimethylalkanes. Fourteen peaks occurred at equivalent chain lengths > 38.65 and consisted of complex mixtures of dimethyl- and trimethylalkanes. Quantitative analyses were performed on pooled samples of five females from each population using flame ionization gas chromatography. All populations contained the same cuticular hydrocarbons, but showed differences in percent composition. Five of seven populations were separable by discriminant analysis of hydrocarbon components.
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