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Article
Cuticular lipid mass and desiccation rates in Glossina pallidipes: interpopulation variation
Physiological Entomology
  • Russell A. Jurenka, Iowa State University
  • John S. Terblanche, Stellenbosch University
  • C. Jaco Klok, Stellenbosch University
  • Steven L. Chown, Stellenbosch University
  • Elliot S. Krafsur, Iowa State University
Document Type
Article
Publication Date
1-1-2007
DOI
10.1111/j.1365-3032.2007.00571.x
Abstract

Tsetse flies, Glossina pallidipes (Diptera: Glossinidae) are said to have strong dispersal tendencies. Gene flow among these populations is estimated to be the theoretical equivalent of no more than one or two reproducing flies per generation, thereby raising the hypothesis of local regimes of natural selection. Flies were sampled from four environmentally diverse locations in Kenya to determine whether populations are homogeneous in desiccation tolerance and cuticular lipids. Cuticular hydrocarbon fractions known to act as sex pheromones do not differ among populations, thereby eliminating sexual selection as an isolating mechanism. Cuticular lipid quantities vary among populations and are not correlated with prevailing temperatures, humidities, and normalized density vegetation indices. Females demonstrate a stronger correlation than males between cuticular lipid mass and body weight. Desiccation rates also vary among populations, but are not correlated with the amounts of cuticular lipid. Chemical analysis of cuticular hydrocarbons by gas chromatography–mass spectroscopy shows that one of the four populations has more 11,15- and 11,21-dimethyl-31 hydrocarbon on females. These results are discussed in the context of population differences and estimates of gene flow.

Comments

This is a manuscript of an article from Physiological Entomology 32 (2007): 287, doi:10.1111/j.1365-3032.2007.00571.x. Posted with permission.

Copyright Owner
Russell Jurenka, et al.
Language
en
Date Available
2014-10-16
File Format
application/pdf
Citation Information
Russell A. Jurenka, John S. Terblanche, C. Jaco Klok, Steven L. Chown, et al.. "Cuticular lipid mass and desiccation rates in Glossina pallidipes: interpopulation variation" Physiological Entomology Vol. 32 Iss. 3 (2007) p. 287 - 293
Available at: http://works.bepress.com/russell_jurenka/5/