Figure 1.

Factors that determine body size in Manduca sexta. In Manduca, peak larval weight depends on three parameters: the growth rate (the slope of the curve), the weight at which metamorphosis is initiated (the critical weight), and the length of time between attainment of critical weight and the large ecdysone pulse that terminates feeding and growth (shaded yellow).

Parker and Johnston Journal of Biology 2006 5:15   doi:10.1186/jbiol47
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