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- Title
Mercury Concentrations in Commercial Fish Species of Lake Phewa, Nepal.
- Authors
Sharma, Chhatra; Basnet, Suresh; Kang, Shichang; Rosseland, Bjørn; Zhang, Qianggong; Pan, Ke; Borgstrøm, Reidar; Li, Qing; Wang, Wen-Xiong; Huang, Jie; Teien, Hans-Christian; Sharma, Subodh
- Abstract
Mercury (Hg) concentrations in four commercial fish species (Tilapia Oreochromis niloticus, Spiny Eel Mastacembelus armatus, African catfish Clarias gariepinus, and Sahar Tor putitora), were investigated in Lake Phewa, Nepal. Mean values of total mercury (THg mg kg, ww) in these fishes were 0.02, 0.07, 0.05, and 0.12 respectively. Methylmercury contributed 82 % of THg. The lowest value was detected in O. niloticus, an exclusive plant feeder. The biomagnification rate of Hg through the fish community was 0.041 per δN (‰). The present investigation produced an important baseline data of Hg pollution in the fish community in this region.
- Subjects
PHEWA Lake (Nepal); MERCURY; FISHERIES; NILE tilapia; CLARIAS gariepinus; PUTITOR mahseer; METHYLMERCURY
- Publication
Bulletin of Environmental Contamination & Toxicology, 2013, Vol 91, Issue 3, p272
- ISSN
0007-4861
- Publication type
Article
- DOI
10.1007/s00128-013-1055-y