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Artículo

From water to edible fish. Transfer of metals and metalloids in the San Roque Reservoir (Córdoba, Argentina). Implications associated with fish consumption

Monferran, Magdalena VictoriaIcon ; Garnero, Paola LorenaIcon ; Bistoni, Maria de Los Angeles; Anbar, Ariel A.; Gordon, Gwyneth W.; Wunderlin, Daniel AlbertoIcon
Fecha de publicación: 04/2016
Editorial: Elsevier Science
Revista: Ecological Indicators
ISSN: 1470-160X
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Químicas

Resumen

The concentration of Mn, Fe, Zn, Cu, Cd, Cr, Ni, Ag, Mo, Nd, Al, Ce, As, Sr, Pb, Pt and Hg was analysed in water, sediments, and aquatic organisms from the San Roque Reservoir (Córdoba-Argentina), sampled during the wet and dry season, to evaluate their transfer through the food web. Stable nitrogen (δ15N) isotopes were used to investigate trophic interactions. According to this, samples were divided into three trophic groups: plankton, shrimp (Palaemonetes argentinus) and fish (Silverside, Odontesthes bonariensis). Liver and gills are the main heavy metal storage tissues in fish. Hg and As concentrations in the muscle of O. bonariensis exceed the Oral Reference doses for metals established by USEPA (2009). Trophic magnification factors (TMFs) for each element were determined from the slope of the regression between trace element concentrations and δ15N. Calculated TMFs showed fundamental differences in the trophodynamics of the studied elements during the wet and dry season in the San Roque Reservoir. Concentrations of Ni, Cd, Cr, Al, Mn, Fe, Mo, Ce, Nd, Pt and Pb during both seasons, and Sr during the dry season, showed statistically significant decreases (TMF < 1) with increasing trophic levels. Thus these elements were trophically diluted in the San Roque food chain. Conversely, Cu, Ag and As (dry season) showed no significant relationships with trophic levels. Among the elements studied, Hg in the wet season, and Zn in the dry season were the only ones showing a statistically significant increase (TMF > 1) in concentration with trophic level. Current results trigger the need for further studies to establish differential behaviour with different species within the aquatic web, particularly when evaluating the transfer of toxic elements to edible organisms, which could pose health risks to humans.
Palabras clave: Aquatic Organisms , Food Web , Metalloids , Metals , Trophic Transfer
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Atribución-NoComercial-SinDerivadas 2.5 Argentina (CC BY-NC-ND 2.5 AR)
Identificadores
URI: http://hdl.handle.net/11336/48950
URL: https://www.sciencedirect.com/science/article/pii/S1470160X15006809
DOI: https://doi.org/10.1016/j.ecolind.2015.11.048
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Articulos(ICYTAC)
Articulos de INST. DE CIENCIA Y TECNOLOGIA DE ALIMENTOS CORDOBA
Citación
Monferran, Magdalena Victoria; Garnero, Paola Lorena; Bistoni, Maria de Los Angeles; Anbar, Ariel A.; Gordon, Gwyneth W.; et al.; From water to edible fish. Transfer of metals and metalloids in the San Roque Reservoir (Córdoba, Argentina). Implications associated with fish consumption; Elsevier Science; Ecological Indicators; 63; 4-2016; 48-60
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