权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Physiological and ecologocal studies on sterilizing control of specfic insect pests, sweet potato weevii and meion fly

甘薯象鼻虫、蝇蛆等特有害虫的生理生态学研究

基本信息

批准号：
06454059
负责人：
SAKURAI Hironori
金额：
$ 2.11万
依托单位：
Gifu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06454059/
关键词：
Dacus curcurbitae Cylas formicarius sterilization gamma-radiation spermatogenesis oogenesis

项目摘要

1.The sterilizing mechanism of gamma-radiation in the female melon fly, Dacus curcurbitae was studied histopathologically. In irradiated females, differentiation of 1st-follicle from the germarium was completely inhibited. Oogonia caused pycnosis and karyolysis. Collapsed and condensated cell materials were fused, and the germarium was vacuolized. After aging of irradiated flies, the midgut epithelium became thinner, and thread-like microoraganisms were found abundantly in the lumen of the posterior portion of the midgut. Observation demonstrated that gamma-radation of 70Gy caused complete inhibition of oogenesis. The midgut epithelium was damaged by gamma-radiation, which might cause a deficiency in nutritive supply and possibly contribute to the short life span of irradiated flies.2.The sterilizing mechanism of gamma-radiation in the sweet potato weevil, Cylas formicarius, effects of gamma-radiation on the gamatogenesis and embryogenesis were studied histologically. By gamma-radiatio … More n, the spermatogenesis was inhibited ; the spermatogonia and spermatocyte had almost completely collapsed and spermatozoa in the seminal vesicle markedly decreased. In the eggs oviposited by the normal females which had mated with irradiated males, the normal embryogenic prosess was inhibited, which caused dominant lethal mutatation of fertilized eggs. By gamma-radiation in the females, oogenesis was inhibitedcompletely, which resulted in inhibition of oviposition of females. It was indiated that susceptibility of reproductive tissue against gamma-radiation was higher in females than in males.3.Reproductive properties of the sweet potato weevil was studied by the rearing experiments. Males and females were fertile until death from the 7th day after eclosion. Males mated repeatedlly throughout ther lives. Females laid tota164 eggs on average throughout the life and rarely remated because secretion of the pheromone was inhibited after the first mating. The females oviposited with irrespective of potato size. Less

1.用组织病理学方法研究了γ射线对瓜实蝇Dacus curcurbitae雌性的灭菌机理。在受辐射的雌性中，生殖区的第一卵泡分化完全受到抑制。卵原细胞引起固缩和核溶解。皱缩和凝聚的细胞物质融合，生殖细胞空泡化。照射后果蝇中肠上皮变薄，中肠后部管腔内有大量丝状微生物。结果表明，γ射线照射70Gy时，卵子发生完全被抑制。γ射线照射后，中肠上皮细胞发生损伤，导致营养供应不足，可能是导致果蝇寿命缩短的原因之一。2.从组织学角度研究了γ射线对甘薯象甲Cylas formicarius的灭菌机理，以及γ射线对甘薯象甲配子体发生和胚胎发生的影响。通过伽马辐射 ...更多信息 n时，精子发生受到抑制，精原细胞和精母细胞几乎完全崩解，贮精囊中精子明显减少。正常雌虫与辐射雄虫交配后所产卵的正常胚胎发生过程受到抑制，导致受精卵的显性致死突变。γ射线照射雌虫后，卵子发生完全被抑制，导致雌虫产卵量减少。结果表明，雌虫生殖组织对γ射线的敏感性高于雄虫。3.通过饲养试验研究了甘薯象虫的生殖特性。雌雄成虫羽化后第7天开始可育，直至死亡。雄性在它们的一生中反复交配。雌虫一生平均产卵164粒，很少再交配，因为第一次交配后信息素的分泌受到抑制。无论马铃薯大小，雌虫都产卵。少