Mercúrio total em músculo de cação Prionace glauca (Linnaeus, 1758) e de espadarte Xiphias gladius Linnaeus, 1758, na costa sul-sudeste do Brasil e suas implicações para a saúde pública

Abstract

Mercúrio total em músculo de cação Prionace glauca (Linnaeus, 1758) . glauca, p < 0.05

REVIEW AND ANALYSIS OF MERCURY LEVELS IN BLUE MARLIN (Makaira nigricans, Lacepede 1802) AND SWORDFISH (Xiphias gladius, Linnaeus 1758)

“…Mercury is usually found in the environment vaporized in the atmosphere, on soil, rocks, 31 lakes, rivers, oceans and on sediment. (DIAS et al 2008). 32…”

“…In addition, existing a positive relationship between fish size and mercury levels, 59 people who consume large fish have a higher risk of mercury contamination than people who 60 eat small fish (STORELLI, 2007). From 40% to 100% of the mercury that bioaccumulates in 61 fish muscle tissue is methylated, making some kinds of fish not so recommended for human 62 consumption (DIAS et al, 2008). Bisinoti (2004) alleges that the half-life of mercury in fish 63 varies according to species, but usually ranges from one to three years.…”

“…The methylmercury affects the central nervous system and is a teratogenic agent, may 65 causing genetic malformations and developmental disorders in the fetus (DIAS et al, 2008). 66…”

A systematic review of mercury ototoxicity

“…Environmental contamination with persistent pollutants showing toxic and cumulative effects on organisms, as in the case of mercury (Hg), has reached global proportions due to the persistence and mobility of these substances 1 . Various studies 2,3,4,5 have corroborated the Minamata findings, indicating that mercury exposure results in a series of neurotological alterations 6,7,8,9,10 .…”

The first record of diprosopus tetrophthalmus in the South Atlantic Ocean: The case of Prionace glauca (Elasmobranchii: Carcharhiniformes: Carcharhinidae) in Brazil

“…However, on the Brazilian coast, other factors of anthropogenic origin such as contamination by chemical pollutants including heavy metals and organochlorines may affect the species. High toxicity and biomagnification of contaminants along the trophic chain have been found in blue sharks caught off Brazil (de Azevedo a Silva et al 2007, Dias et al 2008. The form of mercury found (methylmercury) is the most toxic and shows neurotoxicity even at low concentrations in the body, acting as a teratogenic agent that can cause disorders in the embryo even at concentrations that do not affect the mother (Choi 1991).…”