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Mercury and stable isotope signatures in caged marine fish and fish feeds

Abstract

Highlights: Black-Right-Pointing-Pointer Mercury concentrations in caged fish were closely related to Hg concentrations in fish feeds. Black-Right-Pointing-Pointer The trophic transfer factor of methylmercury was dependent on fish feeds, and was the highest for fish fed on pellet feeds. Black-Right-Pointing-Pointer Fish farming may be a good way of reducing the human exposure to Hg because Hg levels can be carefully controlled. - Abstract: Total mercury (THg) and methylmercury (MeHg) concentrations were determined in four species of marine caged carnivorous fish, one species of herbivorous fish and three types of fish feeds (dried pellet feed, forage fish and fish viscera), collected from five cage sites in the rural areas along Fujian coastline, China. For the carnivorous fish, the concentrations of THg and MeHg ranged from 0.03 to 0.31 {mu}g/g and from 0.02 to 0.30 {mu}g/g on wet weight basis, respectively. The concentrations were lower for the herbivorous fish with both within the range of 0.01-0.03 {mu}g/g. Out of the three tested fish feeds, tuna viscera contained the highest level of mercury (0.20 {mu}g/g THg and 0.13 {mu}g/g MeHg), with pellet feed containing the lowest level (0.05 {mu}g/g THg and 0.01 {mu}g/g MeHg). The calculated trophic transfer factor of MeHg was the highest  More>>
Authors:
Onsanit, Sarayut; Chen, Min; Ke, Caihuan; [1]  Wang, Wen-Xiong [1] 
  1. State Key Laboratory for Marine Environmental Science, College of Oceanography and Environmental Science, Xiamen University, Xiamen 361005 (China)
Publication Date:
Feb 15, 2012
Product Type:
Journal Article
Resource Relation:
Journal Name: Journal of Hazardous Materials; Journal Volume: 203-204; Other Information: Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Subject:
54 ENVIRONMENTAL SCIENCES; MERCURY; METHYLMERCURY; PELLETS; RISK ASSESSMENT; RURAL AREAS; STABLE ISOTOPES; TUNA
OSTI ID:
22153992
Country of Origin:
Netherlands
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0304-3894; CODEN: JHMAD9; Other: PII: S0304-3894(11)01387-2; TRN: NL12S1960108126
Availability:
Available from http://dx.doi.org/10.1016/j.jhazmat.2011.11.021
Submitting Site:
NLN
Size:
page(s) 13-21
Announcement Date:
Nov 21, 2013

Citation Formats

Onsanit, Sarayut, Chen, Min, Ke, Caihuan, and Wang, Wen-Xiong. Mercury and stable isotope signatures in caged marine fish and fish feeds. Netherlands: N. p., 2012. Web. doi:10.1016/J.JHAZMAT.2011.11.021.
Onsanit, Sarayut, Chen, Min, Ke, Caihuan, & Wang, Wen-Xiong. Mercury and stable isotope signatures in caged marine fish and fish feeds. Netherlands. https://doi.org/10.1016/J.JHAZMAT.2011.11.021
Onsanit, Sarayut, Chen, Min, Ke, Caihuan, and Wang, Wen-Xiong. 2012. "Mercury and stable isotope signatures in caged marine fish and fish feeds." Netherlands. https://doi.org/10.1016/J.JHAZMAT.2011.11.021.
@misc{etde_22153992,
title = {Mercury and stable isotope signatures in caged marine fish and fish feeds}
author = {Onsanit, Sarayut, Chen, Min, Ke, Caihuan, and Wang, Wen-Xiong}
abstractNote = {Highlights: Black-Right-Pointing-Pointer Mercury concentrations in caged fish were closely related to Hg concentrations in fish feeds. Black-Right-Pointing-Pointer The trophic transfer factor of methylmercury was dependent on fish feeds, and was the highest for fish fed on pellet feeds. Black-Right-Pointing-Pointer Fish farming may be a good way of reducing the human exposure to Hg because Hg levels can be carefully controlled. - Abstract: Total mercury (THg) and methylmercury (MeHg) concentrations were determined in four species of marine caged carnivorous fish, one species of herbivorous fish and three types of fish feeds (dried pellet feed, forage fish and fish viscera), collected from five cage sites in the rural areas along Fujian coastline, China. For the carnivorous fish, the concentrations of THg and MeHg ranged from 0.03 to 0.31 {mu}g/g and from 0.02 to 0.30 {mu}g/g on wet weight basis, respectively. The concentrations were lower for the herbivorous fish with both within the range of 0.01-0.03 {mu}g/g. Out of the three tested fish feeds, tuna viscera contained the highest level of mercury (0.20 {mu}g/g THg and 0.13 {mu}g/g MeHg), with pellet feed containing the lowest level (0.05 {mu}g/g THg and 0.01 {mu}g/g MeHg). The calculated trophic transfer factor of MeHg was the highest (12-64) for fish fed on pellet feeds, and was the lowest for fish fed on tuna viscera. A significant relationship was found between Hg concentrations in caged fish and in fish feeds, thus Hg was primarily accumulated from the diet. Furthermore, the stable isotope {delta}{sup 15}N was positively correlated with the Hg concentration in two caged sites, indicating that {delta}{sup 15}N may be a suitable tool for tracking mercury in caged fish. We conclude that fish farming may be a good way of reducing the human exposure to Hg because mercury levels can be carefully controlled in such farming systems.}
doi = {10.1016/J.JHAZMAT.2011.11.021}
journal = []
volume = {203-204}
journal type = {AC}
place = {Netherlands}
year = {2012}
month = {Feb}
}