摘要
选取我国特有种稀有鮈鲫Gobiocypris rarus的胚胎和幼鱼作为试验材料,采用半静态生物毒性试验方法,测定了水体中的氨氮对胚胎和幼鱼的毒性.结果表明:氨氮对胚胎和幼鱼96h的LC50(非离子氨表示)分别为5.473mg/L和2.059mg/L,安全体积质量分数(SC)(非离子氨表示)分别为1.770mg/L和0.724mg/L,水环境中高体积质量分数的氨氮对稀有鮈鲫的胚胎和幼鱼均有较大伤害,稀有鮈鲫幼鱼对氨氮的敏感度高于胚胎,在水质检测方面可能更具有优势.
A semi static toxicity test was conducted with rare minnow （Gobiocypris rarus）, an endemic fish species to China, as the experimental subject to study the toxicity of ammonia in the water body to its embryo and larvae. The results showed that the 96h median lethal concentration （LC50） was 5. 473 and 2. 059 mg （un-ionized ammonia）/L, and the safe concentration （SC） was 1. 770 mg/L and 0. 724 mg （un-ionized ammonia）/L to the embryo and the larvae, respectively. The ammonia in aquatic environments is considerably harmful to the embryo and the larvae of rare minnow. The larvae showed higher sensitivity than the embryo and, therefore, may have more advantages in water quality monitoring.
出处
《西南大学学报（自然科学版）》
CAS
CSCD
北大核心
2014年第1期47-52,共6页
Journal of Southwest University(Natural Science Edition)
基金
科技部国家重点基础研究发展计划课题资助项目(2010CB134405)
关键词
氨氮
稀有鮈鲫
胚胎
急性毒性
ammonia
rare minnow
embryo
acute toxicity
