Species Identification and Developmental Biology of a Red Bean Pest in Ostrinia sp. (Lepidoptera: Crambidae)
2012
Jung, J.K., National Institute of Crop Science, RDA, Suwon, Republic of Korea | Seo, B.Y., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea | Park, D.S., Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea | Oh, H.W., Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea | Lee, G.S., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea | Park, H.C., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea | Cho, J.R., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea
Ostrinia larvae feed the pods and stem of red bean and seriously damage the bean production from farmers. In this study we investigated biological and developmental characteristics including field collection, host feeding preference, artificial rearing diet, morphological and molecular taxonomical identification, and pheromone analysis for an Ostrinia sp. in Korea. The male adults have massive tibia in the middle legs and 3-lobed uncus in the genitalia. The partial nucleotide sequences of mitochondrial cytochrome oxidase I (COI) and II (COII) were not corresponded to those DNA sequences from other Ostrinia species reported previously in Japan and China. Host plants for this species are also different from the previous species reported. In the gas chromatography (GC) analyses, (Z)-9-tetradecenyl acetate was not detected from the pheromone gland of our species while the component as a sex pheromone was found in O. zaguliaevi and O. zealis, With taken results, we conclude this Ostrinia species in Korea is Ostrinia scapulalis or closely related species. When larvae collected in a fall were incubated in the outdoor condition, they emerged to adult between June and July in the next year. The result indicates that the winter diapause could be started in late larval stage. In addition, we developed a semi-synthetic artificial diet adopted for mass rearing of the O. scapulalis in laboratory.
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