大袋蛾性信息素研究初报

<正>大袋蛾不但具有独特的生活习性,而且雌虫性信息素的分泌部位和化学结构亦不同于一般鳞翅目蛾类。我们的初步工作证实,大袋蛾雌成虫的性引诱能力极强,其性信息素的分泌部位主要在胸部背板区。用漂洗法提取,可消除屏蔽物质的干扰和减少杂质的污染。大袋蛾性信息素的化学结构不同于一般鳞翅目蛾类的不饱和长碳链醇、乙酸酯或醛、酮之类。其主要活性组分的分子量为270,分子式C_(17)H_(34)O_2。此外,还有多元组分存在的可能性。结构鉴定的进一步工作正在进行。

A PRELIMINARY REPORT ON SEX PHEROMONE OF CLANIA VARIEGATA SNELLEN

1, ThE female C. variegata emits an odorousattractant for the male. The emitting organ of this sex pheromone is located at the head-thorax area of the adult female.2, Active materials of the female were extracted by rinse method in order to eliminate disturbance of masking agents and decrease contamination of impurities.3, The concentrate of crude extract was chromatographed on the silica gel column, and the active fractions were further purified by micro-preparative gas chromatography. The purified active fractions were monitored and tested by means of field bioassay and electroantennogram (EAG).4, The microchemical reactions suggested that this active compound is neither an unsaturated straight-chain acetate or prcpionate nor an alcohol, an aldehyde or a ketone. Therefore, the structure of pheromone of C. variegata is dissimilar to those of any Lepidopterous insects studied. Mass spectral analysis indicated that the molecular weight of the main active compound is 270 and the molecular formula is C17H34O2. Furthermcre, it is possible that this pheromone is composed of multiple components. Further work of structural identification is under way.