Survival and Hsp70 Gene Expression in Plutella xylostella and Its Larval Parasitoid Diadegma insulare Varied between Slowly Ramping and Abrupt Extreme Temperature Regimes

Abstract

Hsp70 gene expression was responsive to extreme temperatures in both DBM and D. insulare, which may underlie the ability of these insects to survive in extreme temperatures. Survival and hsp70 expression upon abrupt changes are distinctly different from those after ramping indicating that experimental protocol must be considered before extrapolating laboratory results to natural field situations.