We sought to determine the pattern of Hsp 70 expression in pupae of different physiological age, and following a heat-induced quiescence. Expression of Hsp70 only becomes evident in pupae at less than 50 d to emergence, and the ability to express Hsp70 was acquired 10-15 d after the end of quiescence. The fact that the capacity for Hsp70 expression following heat stress is correlated with the termination of diapause, and is only acquired sometime after the end of a heat induced quiescence, further supports the hypothesis that quiescence occurs at the transition between diapause and morphogenesis, and may contribute to avoid potentially stressful environmental conditions afterward.
Species 1: Diptera Tephritidae Rhagoletis mendax (blueberry maggot)
Keywords: diapause, Hsp70
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