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- Title
Factors affecting the accumulation of organotins by wild fish: A case study in the Three Gorges Reservoir, China.
- Authors
Gao, Jun-min; You, Jia; Wu, Jing-cheng; Guo, Jin-song; Fu, Ping-ting; Zhang, Li-xia
- Abstract
Organotin compounds (OTs) accumulate in fish easily, however, research on their influencing factors is still limited. This study collected 25 species of fish with different diets, habitats, and age from the Three Gorges Reservoir (TGR), the largest deep-water river channel-type reservoir in China, and analyzed the accumulation characteristics of OTs in these fish. The results showed that tributyltin (TBT) and triphenyltin (TPhT) were the dominant OTs in fish from the TGR. The correlation between OTs concentration and age, body length, and body weight varied with fish species. The concentrations of TBT and TPhT in carnivorous fish (mean, 25.78 and 11.69 ng Sn/g dw, respectively) were higher than those in other diet fish (P<0.01), but there was no significant difference in fish at different habitat water layers (P>0.05). In addition, the degradation rates of TBT and TPhT in different fish species were all below 50%. In summary, the accumulation of TBT and TPhT in fish is mainly influenced by diet, and both TBT and TPhT were difficult to degrade in fish. These results reveal the pollution characteristics of OTs in fish from the TGR, and can improve our understanding of the factors influencing TBT and TPhT accumulation in freshwater fish.
- Subjects
CHINA; ORGANOTIN compounds; GORGES; FISH habitats; FISH weight; BODY weight; RIVER channels; FISHES
- Publication
Environmental Science & Pollution Research, 2023, Vol 30, Issue 59, p124407
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-023-31037-y