Mercury concentration in the spectacled caiman and black caiman (Alligatoridae) of the Amazon: implications for human health

Archives of Environmental Contamination and Toxicology
Larissa SchneiderRonis Da Silveira

Abstract

Mercury (Hg) concentrations in the Amazon are generally high, but no studies have been published on Hg concentrations in caimans (Alligatoridae) from the region. Aiming for sizes representative of caimans traded for food in the Amazon, we measured Hg concentration in tail muscle of spectacled caiman (Caiman crocodilus crocodilus) and black caiman (Melanosuchus niger) from the Purus River basin. The information on Hg concentration in caimans from this area is important because of the potential health risk to humans and other animals that eat them as well as the potential use of these top-level predators as bioindicators. There were no significant interspecific or sex differences in Hg concentrations. The mean Hg concentration was 291.2 μg/kg in C. c. crocodilus and 193.9 μg/kg in M. niger. A significant positive correlation between Hg concentration and size was found for M. niger (p = 0.005) but not for C. c. crocodilus. Our Hg sample from M. niger corresponded to the size of M. niger collected for commercial trade, but our Hg sample from C. c. crocodilus turned out to be significantly smaller than the trade samples (p = 0.004), but this difference is not pertinent in the absence of a correlation between size and Hg concentratio...Continue Reading

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Citations

Jul 16, 2014·Environmental Science and Pollution Research International·Jozélia CorreiaZuleica Castilhos
Sep 22, 2015·Environmental Toxicology and Chemistry·Sam EgginsWilliam Maher
Oct 31, 2014·Archives of Environmental Contamination and Toxicology·A M Buenfil-RojasJ R Cedeño-Vázquez
Aug 11, 2017·Cancer Chemotherapy and Pharmacology·Shareni JeyamoganRuqaiyyah Siddiqui
Mar 11, 2020·Biological Reviews of the Cambridge Philosophical Society·Ruchira SomaweeraBruce L Webber
Jul 14, 2018·The Journal of Pharmacy and Pharmacology·Salwa Mansur AliNaveed Ahmed Khan
Jan 5, 2021·Bulletin of Environmental Contamination and Toxicology·Andrea C Salazar-PammoGuido Miranda-Chumacero
Dec 22, 2019·The Science of the Total Environment·Abigail J LawsonPatrick G R Jodice
Apr 27, 2021·Archives of Environmental Contamination and Toxicology·Jérémy LemairePaco Bustamante
Apr 30, 2021·Environmental Monitoring and Assessment·Rayssa Lima Dos SantosEdnilza Maranhão Dos Santos
Jul 6, 2021·Analytical Methods : Advancing Methods and Applications·Chengshan FanHai Jun Xu
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Jul 17, 2013·ACS Applied Materials & Interfaces·Xiaofeng DingJinhuai Liu
Aug 28, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Naveed Ahmed KhanRuqaiyyah Siddiqui

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