Environmental contamination and marine mammals in coastal waters from Argentina: an overview

Marcovecchio, Jorge Eduardo; Gerpe, Marcela Silvia; Bastida, Ricardo; Rodríguez, Diego H.; Morón, Sergio

doi:10.1016/0048-9697(94)90084-1

Cited by 57 publications

(24 citation statements)

References 33 publications

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“…44 In this study, concentrations of essential and nonessential elements found in the liver of cetaceans species were of the same order of magnitude as those reported in previous studies with the same species from the South American coast (Table 4), but hepatic copper concentration in the three cetaceans species (S. guianensis, P. blainvillei and S. frontalis) from the southeastern Brazilian coast, was lower than those found in samples from the southern coast of Brazil 10 (Table 4) and Argentine coast 32,34 (Table 4). Cadmium concentrations in the liver of P. blainvillei from the coastal areas of Argentina 32,34 (Table 4) and S. frontalis from the Brazilian southern coast 7 (Table 4) presented higher concentrations than those found in the liver of these dolphin species from the northern coast of Rio de Janeiro (Brazil). The same behavior was observed for copper, selenium and silver in the liver of S. frontalis 7 (Table 4) where individuals from the Brazilian southern coast 7 also presented the highest hepatic concentration of these elements.…”

Section: 42supporting

confidence: 62%

“…7,11,[13][14][15][16][17] Furthermore, extensive studies of As, Cd, Cu, Pb, Se and Ag concentrations in cetaceans have been carried out in Northern Hemisphere 5,8,10,12,[18][19][20][21][22][23][24][25][26][27][28][29][30] but relatively little is known about contaminant levels in Southern Hemisphere cetaceans. [31][32][33][34][35] Then, the present research adds new insight to and complements the existing studies. This study assesses: (i) trace element (As, Cd, Cu, Pb, Se and Ag) concentrations in the liver of three cetacean species, Sotalia guianensis (estuarine dolphin), Pontoporia blainvillei (franciscana dolphin) and Stenella frontalis (Atlantic spotted dolphin) incidentally caught in fishing nets along the North coast of the Rio de Janeiro State (Brazil) and, (ii) the influence of gender, body length and habitat on their hepatic trace element content.…”

Section: Introductionmentioning

confidence: 79%

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Trace elements in different species of cetacean from Rio de Janeiro coast

Seixas¹,

Kehrig²,

Beneditto³

et al. 2009

J. Braz. Chem. Soc.

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Neste estudo avaliou-se a influência de alguns parâmetros ecológicos e biológicos sobre a acumulação dos elementos-traço (As, Cd, Cu, Pb, Se e Ag) no fígado de três espécies de cetáceos, sendo duas de hábito costeiro (Pontoporia blainvillei e Sotalia guianensis) e uma de hábito oceânico (Stenella frontalis), que foram acidentalmente capturados na costa norte do estado do Rio de Janeiro. Diferenças inter-espécies foram observadas no padrão de acumulação dos elementos-traço, Cd e Pb (5,12 ± 0,74 µg g -1 e 21,25 ± 1,35 µg g -1 , respectivamente). Entretanto, as três espécies de cetáceo, S. guianensis, P. blainvillei e S. frontalis apresentaram concentrações hepáticas de As, Cu e Ag similares. O sexo dos indivíduos não influiu na bioacumulação dos elementos. O comprimento total influenciou na acumulação dos elementos-traço no fígado de acordo com a espécie de cetáceo. S. guianensis, que co-habita o mesmo ambiente que a espécie P. blainvillei, apresentou uma diferença significativa na concentração hepática de selênio (20,70 ± 32,22 µg g -1 e 3,24 ± 2,02 µg g -1 , respectivamente). A partir dessas observações pode-se concluir que condições ambientais e parâmetros biológicos, tais como comprimento total e principalmente a preferência alimentar, influenciaram significativamente a acumulação de elementos traço no fígado dessas espécies de cetáceos.The present work tested whether ecological and biological parameters have an influence on the accumulation of trace elements (As, Cd, Cu, Pb, Se and Ag) by the liver of three cetaceans species: two species of coastal habit (Pontoporia blainvillei and Sotalia guianensis) and one of oceanic habit (Stenella frontalis), that were incidentally caught in fishing nets along the north of Rio de Janeiro coast. Inter-species difference was observed on the accumulation of Cd and Pb (5.12 ± 0.74 µg g -1 and 21.25 ± 1.35 µg g -1 , respectively). However, the three cetacean species, S. guianensis, P. blainvillei and S. frontalis presented similar hepatic concentrations of As, Cu and Ag. No gender differences were found on the bioaccumulation of trace elements. Hepatic trace element accumulation was influenced by body length, according to the cetacean species. S. guianensis, which co-habits the same coastal marine environment that P. blainvillei species, presented a significant difference between hepatic selenium concentration (20.70 ± 32.22 µg g -1 and 3.24 ± 2.02 µg g -1 , respectively). Based on these results, it is possible to conclude that, not only the different environmental conditions, but also total length and mainly the feeding habit influenced the accumulation of trace elements by the liver of these cetacean species.

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Section: 42supporting

confidence: 62%

Section: Introductionmentioning

confidence: 79%

Trace elements in different species of cetacean from Rio de Janeiro coast

Seixas¹,

Kehrig²,

Beneditto³

et al. 2009

J. Braz. Chem. Soc.

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“…Currently, there is information on micropollutant contamination in bottlenose dolphins only for southeast and south Brazil and for the Argentinean coast (e.g. Marcovecchio et al, 1994;Dorneles et al, 2010;Lailson-Brito et al, 2012).…”

Section: Bioaccumulation Of Pollutantsmentioning

confidence: 99%

Report of the Working Group on Interactions between Humans and Tursiops truncatus in the Southwest Atlantic Ocean

Fruet

Zappes

Bisi

et al. 2017

Lat. Am. J. Aquat. Mamm.

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In this work we compiled the available information about humans and bottlenose dolphin interactions in the Southwest Atlantic Ocean (SWAO), including issues as historical direct takes, incidental captures in fisheries, positive interactions with fisheries, interactions of dolphins with tourism and boat traffic, habitat modification or degradation, and environmental pollution. The data compiled in this review demonstrated that coastal bottlenose dolphins are under anthropogenic pressure in the SWAO. Direct take of bottlenose dolphins in the wild does not appear to be an issue of conservation concern in the SWAO. Although the species is exposed to bioaccumulation of micropollutants, it is suggested that contamination level is lower when compared to bottlenose dolphins from other continents. Coastal works can impact bottlenose dolphin behavior and habitat use in a short-term, but those seem to be reversible when works stop. Bycatch occurs throughout the species distribution and seems to be occasional in Uruguayan and Argentinean waters, where there is evidence of a historic decline in dolphin sightings. In Brazil, bycatch is apparently low in the northeast and southeast coasts, but is frequent in certain areas of southern Brazil. Studies on the subject are scarce or preliminary and a great effort is still required to understand the real impact of human activities on bottlenose dolphins in the SWAO.

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“…At Península Valdés, Argentina sources of metals include mining, storage and transport of petroleum, harbor activities and cities that have settled in the area and are expanding [18]. The only aluminum smelter in the country (ALUAR) is located in the city of Puerto Madryn on Golfo Nuevo, the southern gulf of the Peninsula.…”

Section: Introductionmentioning

confidence: 99%

Metal Levels in Southern Right Whales (Eubalaena australis) from Península Valdés, Argentina

Martino

Wise

Perkins

et al. 2013

J Environ Anal Toxicol

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Península Valdes, Argentina, is a nursing ground for a population of southern right whales ( Eubalaena australis ). In the last two decades this area has been subjected to an increase in population, tourism and industrial growth. This has raised the concern for exposure to chemical contaminants such as metals. In this study we measured nonessential metals (Ag, Al, As, Au, Ba, Be, Co, Cd, Cr, Hg, Li, Ni, Pb, Sb, Sn, Sr, U and Ti), essential metals (Cu, Fe, Mg, Mn, Mo and Zn) and an essential element (Se) in skin biopsies from female southern right whales (n=10). This is the first report on tissue concentrations of metals in adult southern right whales. Overall, tissue values were on the low end of the spectrum and similar to the values reported in studies of mysticetes from other regions. Measured values do not reflect substantial amounts of accumulation and thus serve as a baseline.

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Environmental contamination and marine mammals in coastal waters from Argentina: an overview

Cited by 57 publications

References 33 publications

Trace elements in different species of cetacean from Rio de Janeiro coast

Trace elements in different species of cetacean from Rio de Janeiro coast

Report of the Working Group on Interactions between Humans and Tursiops truncatus in the Southwest Atlantic Ocean

Metal Levels in Southern Right Whales (Eubalaena australis) from Península Valdés, Argentina

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