title: Effect of seasonal variation in seawater dissolved mercury concentrations on mercury accumulation in the muscle of red sea bream (Pagrus major) held in Minamata Bay, Japan.
abstract: Japanese stingfish (Sebastiscus marmoratus) and Bambooleaf wrasse (Pseudolabrus japonicas) are monitored annually for mercury pollution in Minamata Bay, Japan. The average total mercury concentration in the muscle of these two species in Minamata Bay was 0.36 mg kg(-1) wet weight and 0.20 kg(-1) wet weigh, respectively, between 2008 and 2010. This is higher than levels elsewhere in Japan (0.125 mg kg(-1) wet weight and 0.038 mg kg(-1) wet weight, respectively). The FDA (2001) and EPA (2004) suggested that a proportion of mercury accumulated in fish is derived from seawater. We reared young red sea bream (Pagrus major) over a 2-year period in Minamata Bay and Nagashima (control) to evaluate the uptake of mercury from seawater and dietary sources. Fish were fed a synthesized diet that did not contain mercury. There was no difference in mercury accumulation in the muscle of red sea bream between Minamata Bay and Nagashima. Thus, our results suggest that the majority of mercury accumulated in fish muscle is not from seawater.
authors: Risk Evaluation Section, Department of Epidemiology, National Institute for Minamata Disease, 4058-18 Hama, Minamata, Kumamoto 867-0008, Japan. Matsuyam@nimd.go.jp
authors: Akito
authors: A
authors: Matsuyama
authors: Saichiro
authors: S
authors: Yokoyama
authors: Michiaki
authors: M
authors: Kindaichi
authors: Ikuko
authors: I
authors: Sonoda
authors: Jiro
authors: J
authors: Koyama
mesh_terms: D000818:Animals; D061006:Bays / Q000737:chemistry; D004784:Environmental Monitoring; D007564:Japan; D008628:Mercury / Q000032:analysis* / Q000378:metabolism; D009132:Muscles / Q000378:metabolism; D021541:Sea Bream / Q000378:metabolism*; D012623:Seawater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000378:metabolism
chemical_list: D014874:Water Pollutants, Chemical; D008628:Mercury
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