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Revista de biología marina y oceanografía

On-line version ISSN 0718-1957

Abstract

CORTES, Maritza  and  LUNA-JORQUERA, Guillermo. Effect of age and location in the concentration of cadmium and copper in the liver of the Kelp gull Larus dominicanus. Rev. biol. mar. oceanogr. [online]. 2011, vol.46, n.2, pp.287-292. ISSN 0718-1957.  http://dx.doi.org/10.4067/S0718-19572011000200020.

We analyzed Cu and Cd liver concentration in adults and fledglings of Kelp gull from an urban (Coquimbo city) and a wild (Pájaros Islet) colony. Cu concentration was 15.57 ± 0.079 µg g-1 dry weight for adults and fledglings of both colonies. Adults Cd concentration from both colonies was 9.72 ± 0.110 µg g-1 dw, being 194% of the level considered toxic but in the range for seabirds. In the urban fledglings Cd was below the detection level. Wild fledgling showed higher concentration of 1.54 ± 0.064 µg g-1 dw which probably reflects a biomagnification process, because parents kleptoparasite and consume eggs and chicks of other seabirds.

Keywords : Heavy metals; seabirds; Kelp gull; biomagnification.

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