摘要
在24℃下用低浓度氟化氢(HF)熏蒸过的小麦叶饲养粘虫(Mythimna separata),研究氟污染对粘虫生长和繁殖的影响。当氟处理浓度为0.87微克/分米~2·天时,整个幼虫期的发育——存活指数和相对生长速率(GR)分别比对照组幼虫低10％和5％左右,种群增长指数减少10％,大部分幼虫增加了一个龄期。用饲养在熏气罩内盆栽小麦上的幼虫作相似的测定,氟处理浓度为0.87微克/分米~2·天,熏气罩内的幼虫与对照组幼虫相比,存活率和GR分别下降40％和15％左右,而且发育期延长。 试验结果表明,大气氟污染对幼虫生长的直接影响要大于它通过熏蒸小麦叶对幼虫的间接影响。
The effects of fluoride pollurion on the giowth and reproduction of army worm Mythimna separata (Walker) were studied by rearing their larvae on HF-Fumigated wheat foliage at 24 1℃. When concentration of ambient F was 0.87μg/dm2@day, the indes of development-survival and the relative growth rate(GR') were about 10% and 5 %, respectively, less than those of control group, and the index of population growth was decreased by 11%, as well as the majority of the larvae were increased by an age-specific.The same determinations were made by rearing the army worm on the wheat growing in open-top experimental device for air pollurion of plants. The survival rate and GR of larvae were decreased by about 40% and 15%, respectively, as compared with control group,and the age-specifics were prolonged greatly.The results from experiments showed that the direct effect of fluoride pollution on the growth of the larvae was greater- than the indirect effect of it by rearing the larvae on fumigated, wheat foliage.
出处
《生态学报》
CAS
CSCD
北大核心
1991年第3期219-224,共6页
Acta Ecologica Sinica
基金
国家自然科学基金
关键词
空气污染
氟
粘虫
生长
繁殖
air pollution, fluoride, wheat plant, army worm, Mythimna separata.
