The identification of two N-acyldopamine glucosides in the left colleterial gland of the praying mantid, Tenodera aridifolia sinensis saussure, and their role in the oothecal sclerotization

Abstract

Two glucosides were found in the left colleterial gland of Tenodera aridifolia sinensis Saussure, and they have been identified as 3- O- β-glucosides of N-acetyldopamine and N-malonyldopamine. β-Glucosidase activity was detected in the right colleterial gland. Sclerotized ootheca was extracted with 0.01 M acetic acid at about 20°C. The extract was found to contain a number of phenolic compounds modified particularly at the β-position of aglucones, which indicated that both of the aglucones acted as the sclerotizing agents, and suggested possible occurrence of the β-sclerotization in the mantid ootheca.