“…In the present study, we measured specific activities of JHE, as well as JH-epoxide hydrolase (JHEH), the other main JH-degrading enzyme, in fat body and midgut, throughout the last nymphal stadium in genetic stocks of Gryllus assimilis artificially selected for high-or low-plasma JHE activity. These tissues, especially fat body, were chosen since they exhibit high JHE specific activity and are likely major contributors to plasma JHE activity (Wing et al, 1981;Hammock, 1985;Roe and Venkatesh, 1990;Jesudason et al, 1992). In addition, using a recently obtained Jhe cDNA sequence from G. assimilis (Crone et al, 2007), we measured Jhe transcript abundance in both fat body and midgut.…”