Figure 4.2 Lipid melting temperatures for cuticle of the grasshopper Melanoplus sanguinipes, measured by infrared spectroscopy. (a) At the melting temperature (Tm) the lipids are 50% melted, as calculated from the fitted logistic curve. (b) Intraspecific variation in melting points and transition temperatures measured using the same individuals. Solid line is line of equality.

Source: Reprinted from Journal of Insect Physiology, 48, Gibbs, 391-400, © 2002, with permission from Elsevier.

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