Acute toxicity and bioaccumulation of arsenic in tilapia (Oreochromis mossambicus) from a blackfoot disease area in Taiwan

Chung Min Liao, Bo Ching Chen, Sher Singh, Ming Chao Lin, Chen Wuing Liu, Bor Cheng Han

研究成果: 雜誌貢獻文章

63 引文 斯高帕斯(Scopus)

摘要

The general objective of our work was to determine the acute toxicity and bioaccumulation of arsenic (As) in tilapia (Oreochromis mossambicus) from the blackfoot disease (BFD) area in Taiwan. The average concentration of As in pond water ranged from 17.8 to 49 μg L-1. Acute toxicity tests showed that the As concentration that caused toxicity to tilapia ranged from 69 060 μg As L-1, in the 24-h toxicity test, to 28 680 μg As L-1, in the 96-h toxicity test. We measured As concentrations in various tissues of tilapia to identify the affinities of tissues for As. Significant correlations were found among the As concentrations in all tissues. The highest bioconcentration factor (BCF) was found in the intestine (maximum value: 2270). The order of BCFs was: intestine > stomach > liver ≃ gill > muscle. Arsenic concentrations in all tissues were allometric, negatively correlating with fish body weight [r2 = 0.63 ± 0.045 (mean ± SE), p < 0.05]. Our results also revealed that As concentrations in muscle tissue were positively correlated with As accumulation in the viscera (r2 = 0.85, p < 0.05). Significantly higher concentrations of As were obtained in the viscera of tilapia [12.65 ± 10.17 μg g-1 dry wt (mean ± SD)] than in the muscle tissue (3.55 ± 0.42 μg g-1 dry wt). Our results suggest that a simple way of reducing the health risk associated with consuming tilapia is to trim and cook the fish properly, that is, removing the viscera of tilapia can greatly reduce the amount of As ingested and consequently reduce the health risks.

原文英語
頁(從 - 到)252-259
頁數8
期刊Environmental Toxicology
18
發行號4
DOIs
出版狀態已發佈 - 2003 八月 29

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ASJC Scopus subject areas

  • Toxicology
  • Management, Monitoring, Policy and Law
  • Health, Toxicology and Mutagenesis

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