Distribution and elimination of Norfloxacin in Fenneropenaeus chinensis larvae

文献类型： 外文期刊

第一作者： Sun Ming

作者： Sun Ming;Sun Ming;Li Jian;Zhao Fazhen;Li Jitao;Chang Zhiqiang

作者机构：

关键词： Fenneropenaeus chinensis larva;NFLX;HPLC;residue analysis

期刊名称：JOURNAL OF OCEAN UNIVERSITY OF CHINA （ 影响因子：0.913； 五年影响因子：1.012 ）

ISSN： 1672-5182

年卷期： 2013 年 12 卷 3 期

页码：

收录情况： SCI

摘要： This study examined the distribution and elimination of Norfloxacin (NFLX) in Fenneropenaeus chinensis ovary and egg and newly hatched larvae. Mature parental shrimp were exposed to 4 or 10 mg L-1 NFLX for 2 or 5 d. Ovary and eggs of the shrimp were sampled after spawning in order to detect NFLX residue using high-performance liquid chromatography (HPLC). Results showed that NFLX residue accumulated in F. chinensis eggs after the parental exposure, with the highest residue detected in ovary. To examine the fate of NFLX residue in larvae, we further determined the concentration of NFLX residue in F. chinensis eggs and larvae at 4 different developmental stages after 24-h exposure. From the newly metamorphosed larvae (0 h post-metamorphosis, h.p.m), samples were taken at different time intervals to 72 h.p.m. HPLC assay showed that the concentrations of NFLX residue in zoea exposed to 4 and 10 mg L-1 NFLX were the highest at 1.5 h, i.e., 0.332 and 0.454 mu g g(-1), respectively. At the two NFLX exposure levels, the elimination time of half NFLX (half life) in nauplius was 45.36 and 49.85 h, respectively, followed by that in zoea (31.68 and 33.13 h), mysis larvae (42.24 and 47.28 h) and postlarvae (24.48 and 30.96 h). Both NFLX exposure levels had a germicidal effect. The distribution and elimination of NFLX residue in F. chinensis tissue, eggs and larvae correlated well with the drug exposure level. The disappearance of NFLX residue coincided with the larval growth, and the half-life of NFLX decreased with the larval development.

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