• Corpus ID: 54591685

Giant otter (Pteronura brasiliensis) at risk? Total mercury and methylmercury levels in fish and otter scats, Peru

  title={Giant otter (Pteronura brasiliensis) at risk? Total mercury and methylmercury levels in fish and otter scats, Peru},
  author={Arno C. Gutleb and Christof Schenck and Elke Staib},
Mercury and methylmercury levels in fish muscle and scats of the giant otter (Pteronura brasiliensis) of Manu National Park, Peru, and in one gold-mining area in the vicinity of its borders were analyzed. In 68% of fish muscles, total mercury levels exceeded the proposed maximum tolerable level of 0.1 mg kg-' fresh weight in fish for the European otter (Lutra lutra), and 17.6% exceeded 0.5 mg kg-1 fresh weight, the most common standard for human consumption. The ratio of methylmercury to total… 

Figures and Tables from this paper

Gold Mining and Mercury Bioaccumulation in a Floodplain Lake and Main Channel of the Tambopata River, Perú
Contamination of water bodies by inorganic mercury (Hg[II]) used in placer mining of gold deposits in the Madre de Dios Department, Peru, contributes to the bioaccumulation of methylmercury (MeHg) in
Mercury Biomagnification in a Tropical Black Water, Rio Negro, Brazil
Fish Hg concentrations exceeding current safe limits for human consumption were found mainly in the piscivorous species, and opportunity fish catches in the Rio Negro habitat show high muscle-Hg derived from natural sources, but no systematic association with site-dependent geochemistry.
Mercury Levels in Human Hair and Farmed Fish near Artisanal and Small-Scale Gold Mining Communities in the Madre de Dios River Basin, Peru
Examination of patterns in the total hair mercury level of human participants in several communities in the region and mercury levels of fish raised in local aquaculture ponds indicated that higher hair mercury levels were associated with residence in ASGM communities, aligning with other recent studies showing that ASGM activities are associated with elevated human mercury exposure.
Mercury concentrations in bats (Chiroptera) from a gold mining area in the Peruvian Amazon
This study demonstrates that ASGM activities (and Hg point sources) increase Hg exposure in wildlife, and demonstrates the importance of considering feeding habits when evaluating Hg concentrations in bats and other vertebrates.
Distribution and status of giant otter (Pteronura brasiliensis) in the Pantanal wetland, Brazil
The giant otter (Pteronura brasiliensis) is listed as vulnerable in Brazil, is included in Appendix I of CITES and is classified as endangered by the IUCN. In Brazil, few viable populations persist
Mercury content in the fur of jaguars (Panthera onca) from two areas under different levels of gold mining impact in the Brazilian Pantanal.
The data indicate that Hg is an important threat to jaguars within at-risk regions of the Pantanal, and therefore Jaguars show great potential to accumulate Hg by biomagnification.
Mercury in the Amazon.
  • M. Lodenius, O. Malm
  • Environmental Science
    Reviews of environmental contamination and toxicology
  • 1998
Methylmercury concentrations in hair are often at levels that may cause clinical symptoms of Minamata disease, and the greatest health hazard index values have been estimated for people eating contaminated fish.


On the Chemical Form of Mercury in Edible Fish and Marine Invertebrate Tissue
Total mercury, monomethylmercury (CH3Hg), and dimethylmercury ((CH3)2Hg) in edible muscle were examined in 229 samples, representing seven freshwater and eight saltwater fish species and several
Mortality of otters (Lutra lutra) in Shetland
It is suggested that food shortage was most probably the ultimate cause of death in most otters in Shetland, with the effects of mercury and perhaps PCBs as contributing factors.
A review of metal accumulation and toxicity in wild mammals. I. Mercury.
  • C. Wren
  • Environmental Science
    Environmental research
  • 1986
Mercury in the Swedish environment — Recent research on causes, consequences and corrective methods
ABSTRACTDuring the last decade a new pattern of Hg pollution has been discerned, mostly in Scandinavia and North America. Fish from low productive lakes, even in remote areas, have been found to have
Factors affecting mercury accumulation in fish in the upper michigan peninsula
Fish were sampled from 35 drainage and seepage lakes in the upper Michigan peninsula and Wisconsin in conjunction with Phase II of the U.S. Environmental Protection Agency's Eastern Lake Survey to
Mercury pollution due to gold mining in the Madeira river basin, Brazil.
Air-mercury concentrations prove to be quite similar to control areas, but can reach very high levels in the vicinity of Au-Hg reburning locations, as well as in fish and human hair from the gold mining area along the Madeira River, SW Amazon.
The price of gold: mercury exposure in the Amazonian rain forest.
The purpose of this case series is to document mercury levels in miners and local villagers presenting with a history of exposure, or signs and symptoms consistent with mercury toxicity, in the Amazon River Basin.
Biological Methylation of Mercury in Aquatic Organisms
It is reported that both mono and dimethylmercury can be produced in bottom sediments and in rotten fish, and relate the findings to the hazards of mercury pollution.
Mercury in fish in Swedish lakes — Linkages to domestic and European sources of emission
The work deals primarily with data from 894 Swedish lakes. The following parameters are discussed: Hg- and Se-concentrations and Hg-quantity in the mor layer reflecting the atmospheric deposition of