title: Hepatic and renal metallothionein concentrations in Commerson's dolphins (Cephalorhynchus commersonii) from Tierra del Fuego, South Atlantic Ocean.
abstract: The Commerson's dolphin is the most common endemic odontocete of subantarctic waters of Tierra del Fuego, Argentina incidentally caught in fishing nets. The species is classified as "Data Deficient" by the IUCN. Metallothioneins (MTs) are considered as suitable biomarkers for health and environmental monitoring. The aims of the study were to assess MT concentrations in the liver and kidney of bycaught specimens. Moreover, correlations with Zn, Se, Cd, Ag and Hg, and the molar ratios of MT:metals were estimated to evaluate if there is an indication of their respective protective role against metal toxicity in tissues. Hepatic and renal MT concentrations were similar, ranging from 11.6 to 29.1nmol·g(-1) WW, and Kidney/Liver ratios ranging from 0.73 to 1.93 corresponded to normal ranges. Results suggest that MTs are related to physiological ranges for the species. This information constitutes the first MT report on Commerson's dolphins and possibly considered as baseline for species' conservation.
authors.affiliation: Laboratorio de Ecología, Comportamiento y Mamíferos Marinos, División Mastozoología, Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", Av. Ángel Gallardo 470 (C1405DJR), Buenos Aires, Argentina; Museo Acatushún de Aves y Mamíferos Marinos Australes, Sarmiento 44 (9410), Ushuaia, Tierra del Fuego, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina. Electronic address: caceres.saez@gmail.com.
authors.forename: Iris
authors.initials: I
authors.lastname: Cáceres-Saez
authors.affiliation: Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina; Toxicología Ambiental, Instituto de Investigaciones Marinas y Costeras (IIMyC), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350, (CP 7600) Mar del Plata, Argentina.
authors.forename: Paula
authors.initials: P
authors.lastname: Polizzi
authors.affiliation: Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina; Toxicología Ambiental, Instituto de Investigaciones Marinas y Costeras (IIMyC), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350, (CP 7600) Mar del Plata, Argentina.
authors.forename: Belén
authors.initials: B
authors.lastname: Romero
authors.affiliation: Museo Acatushún de Aves y Mamíferos Marinos Australes, Sarmiento 44 (9410), Ushuaia, Tierra del Fuego, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina; Centro Austral de Investigaciones Científicas, Bernardo Houssay 200, (CP 9410), Ushuaia, Tierra del Fuego, Argentina.
authors.forename: Natalia A
authors.initials: NA
authors.lastname: Dellabianca
authors.affiliation: Laboratorio de Análisis por Activación Neutrónica, Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, Av. E. Bustillo 9.500, (CP8400), Bariloche, Argentina.
authors.forename: Sergio
authors.initials: S
authors.lastname: Ribeiro Guevara
authors.affiliation: Museo Acatushún de Aves y Mamíferos Marinos Australes, Sarmiento 44 (9410), Ushuaia, Tierra del Fuego, Argentina; Centro Austral de Investigaciones Científicas, Bernardo Houssay 200, (CP 9410), Ushuaia, Tierra del Fuego, Argentina.
authors.forename: R Natalie P
authors.initials: RN
authors.lastname: Goodall
authors.affiliation: Laboratorio de Ecología, Comportamiento y Mamíferos Marinos, División Mastozoología, Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", Av. Ángel Gallardo 470 (C1405DJR), Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina; Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y Diagnóstico (CEBBAD), Universidad Maimónides, Hidalgo 775 piso 7, (C1405BDB), Buenos Aires, Argentina.
authors.forename: H Luis
authors.initials: HL
authors.lastname: Cappozzo
authors.affiliation: Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina; Toxicología Ambiental, Instituto de Investigaciones Marinas y Costeras (IIMyC), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350, (CP 7600) Mar del Plata, Argentina.
authors.forename: Marcela
authors.initials: M
authors.lastname: Gerpe
mesh_terms: D000818:Animals; D001118:Argentina; D001267:Atlantic Ocean; D004289:Dolphins / Q000378:metabolism* / Q000502:physiology; D004784:Environmental Monitoring / Q000379:methods*; D005260:Female; D007668:Kidney / Q000737:chemistry* / Q000378:metabolism*; D008099:Liver / Q000737:chemistry* / Q000378:metabolism; D008297:Male; D008668:Metallothionein / Q000378:metabolism*; D019216:Metals, Heavy / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis
chemical_list: D019216:Metals, Heavy; D014874:Water Pollutants, Chemical; D008668:Metallothionein
keywords: Metallothioneins; Southwestern South Atlantic Ocean; Subantarctic dolphins; Trace elements