Effect of a Low Temperature-Induced Quiescence on Short Term Storage of an Egg Parasitoid, Trichogramma sp. Nabisl 01

摘要

A commercial egg parasitoid, Trichogramma sp. NabislOl, was released into agricultural cultivating areas in Korea due to its wide host spectrum against insect pests. Moreover, an application technique has been recently developed to enhance its controlefficacy by mixture treatment with a microbial control agent. Despite its expansion of commercial availability, any genetic identification on this commercial strain was not detennined. Also, to meet inconsistent demands from consumers, the live parasitoids need to be stored without significant loss of their survival and parasitic activity. This study determined nucleotide sequence of internal transcribed spacer (ITS) of the wasp species. The identified ITS sequences indicate that this wasp species is most similar to T. brasiliensis. Optimal storage condition of this wasp required young parasitized stage at 10°C. Under these conditions, survival, sex ratio, longevity, and parasitic behavior were not much impaired for 5 weeks.