|
| Mercury contamination and bioaccumulation in different tissues of marine aquaculture fish |
| Received:November 16, 2016 |
| View Full Text View/Add Comment Download reader |
| KeyWord:marine aquaculture;mercury speciation;fish organs;distribution |
| Author Name | Affiliation | E-mail | | GAO Xue-fei | School of Environmental & Resources Science, Zhejiang A&F University, Hangzhou 311300, China | | | WU Sheng-chun | School of Environmental & Resources Science, Zhejiang A&F University, Hangzhou 311300, China
Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Hangzhou 311300, China | | | YOU Qiong-zhi | School of Environmental & Resources Science, Zhejiang A&F University, Hangzhou 311300, China | | | WANG Qi | School of Environmental & Resources Science, Zhejiang A&F University, Hangzhou 311300, China | | | LIANG Peng | School of Environmental & Resources Science, Zhejiang A&F University, Hangzhou 311300, China
Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Hangzhou 311300, China | liangpeng2727@163.com |
|
| Hits: 2738 |
| Download times: 3774 |
| Abstract: |
| Three kinds of aquacultured fish, including black seabream(Acanthopagrus schlegelii), red snapper(Lutjanus campechanus), and perch(Perca fluviatilis) were collected from Xiang-shan(XS) Bay and Liu-heng(LH) Island, Zhejiang Province, in an attempt to investigate the distribution patterns and bioaccumulation levels in different tissues and organs of fish in terms of total mercury(THg) and methylmercury(MeHg). The results showed that the mean values of THg concentration in fish muscle samples from XS and LH were 106 and 43.4 ng·g-1, respectively, whereas the average MeHg concentrations in fish muscle were 81.0 and 33.6 ng·g-1, respectively. THg and MeHg showed a decreasing order in different tissues as follows:muscle >liver> other organs. The THg and MeHg concentrations in the muscles of black seabream were higher than those in red snapper and perch because black seabream was fed with trash fish whereas red snapper and perch were fed with commercial feed pellets. It was found that THg and MeHg concentrations in the trash fish were significantly higher than in the feed pellets. However, there were no significant differences for THg and MeHg concentrations in the gills and scales among the three kinds of fish, indicating that Hg in gills and scales was mainly from the water. The bioaccumulation factor of MeHg in fish muscle was higher than that of THg for both sites, which implies that it was much easier for MeHg to bioaccumulate in fish muscle than for THg. |
|
|
|
