Methylated mercury in brook trout (Salvelinus fontinalis): absence of an in vivo methylating process
Journal Article
·
· Trans. Am. Fish. Soc.; (United States)
The possibility of in vivo conversion of inorganic mercury to MeHg in brook trout (Salvelinus fontinalis) was tested by chronically exposing fish to mercury (from Hg(NO/sub 3/)/sub 2/) at a concentration of 1 ng/ml, for 56 days, and then maintaining them at background levels for 294 days. The concentrations of inorganic and methylated mercury (MeHg) in several organs of control and test fish were periodically measured over this 50-wk period. The inorganic mercury levels in test fish increased rapidly during exposure. The MeHg concentrations in both control and test fish increased slowly and at the same rate, with final 350-day concentrations comparable to levels found in wild brook trout from an uncontaminated area. This information indicates that fish do not methylate inorganic mercury in vivo, and that approximately one-half of the MeHg body burdens in the fish was acquired via the food.
- Research Organization:
- Oak Ridge National Lab., TN
- OSTI ID:
- 5774393
- Journal Information:
- Trans. Am. Fish. Soc.; (United States), Journal Name: Trans. Am. Fish. Soc.; (United States) Vol. 107:6; ISSN TAFSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
520200 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
550500 -- Metabolism
560305* -- Chemicals Metabolism & Toxicology-- Vertebrates-- (-1987)
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ORGANISMS
CHEMICAL REACTIONS
CHRONIC INTAKE
ELEMENTS
FISHES
INTAKE
MERCURY
MERCURY COMPOUNDS
MERCURY NITRATES
METABOLISM
METALS
METHYLATION
METHYLMERCURY
NITRATES
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC MERCURY COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION
TROUT
VERTEBRATES
WATER POLLUTION
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
550500 -- Metabolism
560305* -- Chemicals Metabolism & Toxicology-- Vertebrates-- (-1987)
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ORGANISMS
CHEMICAL REACTIONS
CHRONIC INTAKE
ELEMENTS
FISHES
INTAKE
MERCURY
MERCURY COMPOUNDS
MERCURY NITRATES
METABOLISM
METALS
METHYLATION
METHYLMERCURY
NITRATES
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC MERCURY COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION
TROUT
VERTEBRATES
WATER POLLUTION