摘要
采用静态水暴露试验方法,设置0.26(对照)、3.1、7.8、18.7、51.8mg·L-1氟离子(F-)5个试验组暴露西伯利亚鲟稚鱼,暴露90d后转移至清水中培养30d,检测了这2个阶段鱼体硬骨和软骨中氟离子含量,探讨了氟离子在西伯利亚鲟稚鱼硬骨和软骨中的积累与消除规律,以及氟离子对鱼体生长的影响.结果表明,随着氟离子浓度的增加和暴露时间的延长,氟在西伯利亚鲟稚鱼硬骨和软骨中的含量显著增加,暴露90d时各暴露组硬骨和软骨中氟含量均显著高于对照组;西伯利亚鲟稚鱼暴露在较高浓度氟离子(7.8、18.7和51.8mg·L-1)中90d,生长速度(体重)显著下降;经过30d清水培养后,较高浓度暴露组(18.7和51.8mg·L-1)西伯利亚鲟稚鱼硬骨的氟含量显著下降.由此结论:氟在西伯利亚鲟稚鱼硬骨和软骨组织中具有较高的生物蓄积作用;转移至清水中饲养后,蓄积的高浓度的氟可从硬骨中排出.
A 120-day growth trial was conducted to determine the accumulation and elimination of fluoride ions （F^-） in juvenile Siberian sturgeon （Acipenser baerii）. Fish were first exposed to each measured F^- concentration of 3.1, 7.8, 18.7 and 51.8mg ·L^-1（added as NaF）, along with a control group（0.26mg·L^-1）for 90 days, followed by a 30-day fresh water exposure period. Fish growth was determined and F^-contents in bone and cartilage were analyzed in different tissues every 30 days. Results showed that fish growth was inhibited significantly for groups exposed to 7.8, 18.7 and 51.8mg·L^-1 compared with the control group. F^- concentrations in bone and cartilage showed dose-response and time-effect. After 90- day exposure, significant increases in F^- content were observed in bone and cartilage of Siberian sturgeon exposed to concentrations above 3.1mg·L^-1. F^- content in bone significantly decreased in the 18.7 and 51.8mg ·L^-1 exposure groups after 30 days reared in fresh water. It is summarized that F^-can be accumulated in bone and cartilage in Siberian sturgeon from water and F^-can be eliminated from bone after reared in fresh water.
出处
《生态毒理学报》
CAS
CSCD
2009年第2期218-223,共6页
Asian Journal of Ecotoxicology
基金
国家高技术研究发展计划资助项目(No.2008AA10Z227)
中央级公益性科研院所基本科研业务费专项资金(中国水产科学研究院东海水产研究所)资助项目(No.2007M01)
中国水产科学研究院内陆渔业生态环境和资源重点开放实验室开放基金(No.YM2007-06)
华东师范大学优秀博士基金(No.20080036)
关键词
氟
鱼
软骨
沉积
fluorine
fish
cartilage
retention
