title: Mercury and selenium in a top-predator fish, Trichiurus lepturus (Linnaeus, 1758), from the tropical Brazilian Coast, Rio de Janeiro.
abstract: Muscular mercury and selenium were assessed in a voracious fish from three Brazilian coastal areas with different environmental conditions. Mercury was higher in specimens from Ilha Grande Bay (0.35 ± 0.17 μg g(-1)) than in cutlassfish from Guanabara Bay (0.30 ± 0.15 μg g(-1)) and Buzios coast (0.13 ± 0.08 μg g(-1)), respectively. No difference was found regarding selenium among these areas. Mercury was positively correlated with fish length and size intervals (sub-adult, small and large adult), suggesting that larger and older fish bioaccumulated more mercury. A large excess of molar selenium in relation to mercury was observed.
authors.affiliation: Departamento de Química, PUC-Rio, Rio de Janeiro, RJ, 22453-900, Brazil. terciaguedes@gmail.com
authors.forename: Tércia G
authors.initials: TG
authors.lastname: Seixas
authors.forename: Isabel
authors.initials: I
authors.lastname: Moreira
authors.forename: Olaf
authors.initials: O
authors.lastname: Malm
authors.forename: Helena A
authors.initials: HA
authors.lastname: Kehrig
mesh_terms: D000818:Animals; D061006:Bays; D001938:Brazil; D004784:Environmental Monitoring / Q000379:methods*; D019015:Geologic Sediments / Q000032:analysis / Q000737:chemistry; D008628:Mercury / Q000032:analysis*; D009132:Muscles / Q000737:chemistry; D010473:Perciformes; D012643:Selenium / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D014874:Water Pollutants, Chemical; D008628:Mercury; D012643:Selenium