Mercury Concentrations in Muscle and Liver Tissue of Fish from Marshes Along the Magdalena River, Colombia

Alvarez, Santiago; Kolok, Alan; Jimenez, Luz; Granados, Carlos; Palacio, Jaime
October 2012
Bulletin of Environmental Contamination & Toxicology;Oct2012, Vol. 89 Issue 4, p836
Academic Journal
The present research determined the total mercury concentrations in muscle and liver tissue in fish collected from the Magdalena River watershed. A total of 378 muscle samples and 102 liver samples were included in the analysis. The highest mean mercury level in muscle tissue was found in the noncarnivore, Pimelodus blochii. However, as a group, carnivores had significantly higher ( p < 0.05) mercury levels in their muscle tissue than noncarnivores. A significant correlation ( p < 0.05) was obtained between fish mass and mercury concentrations in muscle or liver in four species. No differences were observed in total mercury concentration based either on species or gender.


Related Articles

  • New records of freshwater fish for Uruguay. Zarucki, Matías; González-Bergonzoni, Iván; Teixeira-de-Mello, Franco; Duarte, Alejandro; Serra, Sebastián; Quintans, Federico; Loureiro, Marcelo // CheckList;Apr2010, Vol. 6 Issue 2, p191 

    Based on National Collections records, this article presents the first report of eight freshwater fish species for Uruguay in the middle and lower Uruguay River basin, extending their current distribution: Cyanocharax alegretensis Malabarba and Weitzman, 2003; Leporinus lacustris Amaral Campos,...

  • Misunderstood.  // Canada & the World Backgrounder;Dec2010, Vol. 76 Issue 2, p40 

    This article discusses the need to improve the image of sharks. It defends sharks for the portrayal that they are a big threat to human life. It stresses the small number of cases of shark attacks around the world. In addition, the article explains the importance of sharks to the marine food...

  • Environmental Correlates of the Abundances of Three Species of Freshwater Turtles in Lakes of Northern Florida. Aresco, Matthew J. // Copeia;Sep2009, Vol. 2009 Issue 3, p545 

    The high densities of freshwater turtles, along with their Iongevities and tendencies toward omnivory, can make them critical influences on the energy flow in lakes and the resilience of lake food webs. Despite this potential importance, there is little understanding of whether turtle abundances...

  • The trophic role of the squid Loligo plei as a keystone species in the South Brazil Bight ecosystem. Gasalla, Maria A.; Rodrigues, Amanda R.; Postuma, Felippe A. // ICES Journal of Marine Science / Journal du Conseil;Oct2010, Vol. 67 Issue 7, p1413 

    Gasalla, M. A., Rodrigues, A. R., and Postuma, F. A. 2010. The trophic role of the squid Loligo plei as a keystone species in the South Brazil Bight ecosystem. – ICES Journal of Marine Science, 67: 1413–1424.The issue of whether loliginid squid can influence the average structure...

  • Can footprints of small and medium sized felids be distinguished in the field? Evidences from Brazil's Atlantic Forest. de Carvalho, William Douglas; Rosalino, Luís Miguel; Dalponte, Júlio Cesar; Santos, Bárbara; Adania, Cristina Harumi; Esbérard, Carlos Eduardo Lustosa // Tropical Conservation Science;2015, Vol. 8 Issue 3, p760 

    Carnivores, particularly felids, face threats in many regions of the world. They are a crucial component of biodiversity with a functional role in the top of the food chain. Therefore, they have been the target of surveys and monitoring and ecological studies, most of which are based on...

  • Changes in Mississippi River Water Quality this Century. Turner, R. Eugene; Rabalais, Nancy N. // BioScience;Mar1991, Vol. 41 Issue 3, p140 

    Points out that the Mississippi River watershed, which is the largest in the U.S., has undergone massive transformations in the last 200 years. Changes in water quality due to watershed changes and changes in fertilizer use; Use of phosphorus, silicon and dissolved inorganic nitrogen as...

  • A collection of marine fishes from Angola, with notes on new distribution records. Tweddle, Denis; Anderson, M. Eric // Smithiana Bulletin;Mar2008, Vol. 8, p3 

    Collections of fishes from demersal trawl surveys to 800 m depth off the Angolan coast in 2001, 2002 and 2005 resulted in several range extensions tabulated here. Specimens of species poorly represented in previous collections allowed improved diagnoses of Myxine ios, Torpedo bauchotae,...

  • THE SLENDER SUNFISH, RANZANIA LAEVIS (ACTINOPTERYGII: TETRAODONTIFORMES: MOLIDAE), IN THE COASTAL WATERS OF THE OMAN SEA. Jawad, Laith; Al-Mamary, Juma; Al-Kharusi, Lubna // Acta Ichthyologica et Piscatoria;2010, Vol. 40 Issue 2, p105 

    Captures of the slender sunfish, Ranzania laevis, are reported off the coastline of the cities of Sohar and Seeb, Oman Sea, Sultanate of Oman in February and March 2009. Their association with the environmental factors such as warming process is discussed.

  • Fish, Gymnotiformes, Apteronotidae, Apteronotus magdalenensis (Miles, 1945): Distribution extension of an endangered endemic knifefish, in northern Colombia. Agudelo-Zamora, Henry; Pelayo-Villamil, Patricia; Ochoa-Orrego, Luz E.; Jiménez-Segura, Luz F. // CheckList;Oct2009, Vol. 5 Issue 4, p879 

    The article focuses on the geographic distribution extension of the endangered endemic knifefish species Apteronotus magdalenensis at Magdalena basin in northern Colombia. It notes that the populations of this fish species is still unknown though they suffered undoubtedly. It is considered as...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics