RBMO 46(2): 287-292 | 2011
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Efecto de la edad y la localidad en la concentración de cadmio y cobre en el hígado de la gaviota dominicana Larus dominicanus |
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Maritza Cortés1 y Guillermo Luna-Jorquera1,2* |
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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 mg g-1 dry weight for adults and fledglings of both colonies. Adults Cd concentration from both colonies was 9.72 ± 0.110 mg 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 mg g-1 dw which probably reflects a biomagnification process, because parents kleptoparasite and consume eggs and chicks of other seabirds. |
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Key words: Heavy metals, seabirds, Kelp gull, biomagnification |
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