摘要
目的：为观察甲苯对果蝇寿命的影响。方法：采用黑腹果蝇Ｏｒｅｐｏｎ／Ｃ品系，分别在培养管中以０ｍｇ／ｍ３，１００ｍｇ／ｍ３，３７５ｍｇ／ｍ３和１０００ｍｇ／ｍ３浓度甲苯染毒，观察果蝇生存情况。结果：随染毒浓度增大，雌雄两性果蝇均表现为平均生存时间（平均寿命）显著缩短。三个浓度组中，雄性果蝇分别减寿１２．９％，１５．４％和２２．７％；雌性果蝇分别减寿７．５％，１３．７和２６．６％，有明显的浓度－反应关系。从果蝇的生存曲线来看，随着观察时间的推移，可以观察到雌雄果蝇生存总数均逐渐下降，且随浓度增加，下降速度加快，生存曲线终止时间（最长寿命）提前。结论：可以认为在这些浓度下，甲苯可以缩短果蝇寿命，加速果蝇老龄化的速度。
To evaluate effects of toluene on life span of fruitflies,Orepon/C strain fruitflies(male and female) were cultured in tubes with toluene at concentrations of 0,100,375 or 1000mg/m3 until all fruitflies died.The results showed that the life span,including average,longest and shortest life span was shortened in exposed groups of both sexes and significantly dose-depenent;the average life span decrease by 12.9%,15.4%,22.7% in male and 7.5%,13.7%,26.6% in female,respectively.Survival curves showed that survived fruitflies decreased obviously in pace with increasing concentration,and the curve ended earlier,suggesting that toluene exposure accelerates the aging of fruitflies and shortens their life span.
基金
国家自然科学基金
关键词
甲苯
果蝇
老龄化
Toluene Fruitfly Aging
