title: Oviposition deterrents in larval frass of four Ostrinia species fed on an artificial diet.
abstract: Behavioral bioassays have shown that volatile oviposition-deterring chemicals are present in the frass of Ostrinia zealis, O. furnacalis, O. scapulalis, and O. latipennis larvae fed on an artificial diet. These chemicals were extractable with acetone, and could be partitioned into a polar lipid fraction. This fraction mainly included palmitic, stearic, oleic, linoleic, and linolenic acids. No significant differences among the four Ostrinia species were found in the amount and composition of these free fatty acids. A mixture of the five authentic fatty acids of the composition found in the larval frass of O. zealis exhibited significant oviposition-deterring effects on all four species.
authors.affiliation: Laboratory of Applied Entomology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan.
authors.forename: Guoqing
authors.initials: G
authors.lastname: Li
authors.forename: Yukio
authors.initials: Y
authors.lastname: Ishikawa
mesh_terms: D000821:Animal Feed; D000818:Animals; D005227:Fatty Acids / Q000032:analysis; D005260:Female; D007302:Insect Repellents / Q000032:analysis; D007564:Japan; D007814:Larva / Q000737:chemistry / Q000502:physiology; D007915:Lepidoptera / Q000737:chemistry / Q000502:physiology*; D008297:Male; D010058:Oviposition / Q000502:physiology*; D010675:Pheromones / Q000032:analysis*
chemical_list: D005227:Fatty Acids; D007302:Insect Repellents; D010675:Pheromones