Arsenic bioaccumulation in a marine juvenile fish Terapon jarbua

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)582-588
Journal / PublicationAquatic Toxicology
Volume105
Issue number3-4
Online published27 Aug 2011
Publication statusPublished - Oct 2011
Externally publishedYes

Abstract

Arsenic (As) is a ubiquitous toxic metalloid that is causing widespread public concern. Recent measurements have indicated that some marine fish in China might be seriously contaminated with As. Yet the biokinetics and bioaccumulation pathway of As in fish remain little understood. In this study, we employed a radiotracer technique to quantify the dissolved uptake, dietary assimilation and subsequent efflux of As(V) in a marine predatory fish, Terapon jarbua. The dissolved uptake of As showed a linear pattern over a range of dissolved concentrations from 0.5 to 50 μgL-1, with a corresponding uptake rate constant of 0.0015 Lg-1d-1. The assimilation efficiencies (AEs) of dietary As were only 3.1-7.4% for fish fed with copepods, clams, prey fish, or artificial diets, and were much lower than the As that entered the trophically available metal fraction in the prey. The dietary AEs were independent of the As(V) concentrations in the artificial diets. The efflux rate constant of As in fish following the dietary exposure was 0.03d-1. Modeling calculations showed that dietary uptake could be the primary route for As bioaccumulation in fish, and the corresponding contributions of waterborne and dietary uptakes were related to the bioconcentration factor (BCF) of the prey and the ingestion rate of fish. This study demonstrates that As(V) has a low bioavailability to T. jarbua. © 2011 Elsevier B.V.

Research Area(s)

  • Arsenic, Bioaccumulation, Biokinetic model, Fish

Citation Format(s)

Arsenic bioaccumulation in a marine juvenile fish Terapon jarbua. / Zhang, Wei; Huang, Liangmin; Wang, Wen-Xiong.

In: Aquatic Toxicology, Vol. 105, No. 3-4, 10.2011, p. 582-588.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal