敌敌畏农药对家蚕“两广二号”呼吸强度的影响  

Impacts of Pesticide DDVP(Dichlorvos) on Respiration Intensity of "Liangguang II" Silkworms

作　　者：韦秉兴[1] 唐正怡[1] 李国军[1] 廖耀民 莫遥[1] 韦宇萍[1] 

机构地区：[1]广西大学农学院,南宁市530005 [2]南宁市蚕业站,南宁市530007

出　　处：《广西蚕业》2008年第3期1-4,13,共5页Guangxi Sericulture

基　　金：南宁市2006年科技重点攻关项目(编号:南科20060146B).

摘　　要：利用敌敌畏农药对"两广二号"家蚕(3龄)进行急性中毒的试验中,使用微量呼吸仪(SKW-2型)调查和研究家蚕中毒后呼吸强度的变化,结果表明:家蚕呼吸强度对敌敌畏的反应敏感,随农药浓度的加大,家蚕短期内耗氧量急增,最高达3.24μl/mg·h,但马上又迅速下降,直至最低的0.43μl/mg·h。随即出现耗氧抑制率升高,最高达73.81%;高浓度农药中毒后,家蚕呼吸强度比低浓度衰弱快,死亡也快。In the test of acute poisoning of the pesticide DDVP on ＂Liangguang Ⅱ＂ silkworms （3 instars）, the variation of the respiration intensity of ＂Liangguang Ⅱ＂ silkworms was investigated using a micro-breathing instrument （SKW-2-type）. The resuhs show that the response of the respiration intensity of the silkworms is sensitivity to the application of DDVP. When the concentration of DDVP was increased, the oxygen consumption of the silkworms was rapidly increased to 3.24μl/mg·h in a short period. But it declined to the lowest point （0.43μl/mg·h） immediately. Moreover, the inhibition rate of their oxygen consumption presented enhancement up to 73.81%; after the silkworms were poisoned by pesticide, the pesticide with a higher concentration induced not only the respiration intensity fell into a decline soon than the one with a lower concentration, but also a rapid death.

关 键 词：敌敌畏 家蚕 耗氧量 抑制率 呼吸强度 

分 类 号：S884[农业科学—特种经济动物饲养]