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espanolLa nutria marina (Lontra felina) habita a lo largo del litoral rocoso expuesto del Pacifico sudeste entre Peru (6°S), Cabo de Hornos, Chile (56°S) e Isla de Los Estados, Argentina. Este carnivoro nativo esta clasificado como especie Vulnerable en el Libro Rojo de los Vertebrados Terrestres de Chile. Entre septiembre y noviembre de 2004 se evaluo su dieta a traves de analisis fecal y registro de restos alimenticios. Se utilizo el indice de sobreposicion cuantitativo para probar coincidencia entre ambos analisis, tambien aplicamos una encuesta a los pescadores artesanales de la Caleta El Manzano de Pucatrihue, sur de Chile, para conocer la percepcion que tienen de L. felina y su impacto sobre la pesca local. Sobre la base del analisis de 35 fecas los crustaceos representan 60,8%, peces un 32,4% y moluscos un 6,7%. De 150 restos alimenticios los crustaceos corresponden a 55,3%, moluscos a un 44,0% y aves a un 0,7%. Los dos analisis efectuados tuvieron una baja similitud (= 0,35 ± 0,22). L. felina depreda sobre recursos explotados por la pesca artesanal; sin embargo, las artes de pesca no son danadas por este mamifero marino. Un 66,7% de los pescadores manifesto no ver afectada su pesca a causa del animal, mientras un 30,0% afirmo lo contrario; sosteniendo como causa el consumo por parte de L. felina sobre los mismos recursos explotados por ellos (e.g., Concholepas concholepas). Aunque este mamifero no causa danos significativos a la pesca local existe todavia (2003-2004) la caza ilegal de esta nutria en el area de estudio. EnglishThe sea otter (Lontra felina) lives along the rocky coastline exposed southeast Pacific between Peru (6°S), Cape Horn, Chile (56°S) and States island, Argentina. This native carnivore is classified as Vulnerable in the Red Book of Terrestrial Vertebrates of Chile. Between September and November 2004 we assessed their diet through fecal analysis and records of food remnants. We used a quantitative overlap index to test for coincidental similarity between the 2 analyses, and also we applied a survey to fisherfolks at Caleta El Manzano de Pucatrihue, southern Chile, to learn about the perception they have of L. felina impact on local fishing. Based on an analysis of 35 faeces the diet was represented by 60.8% of crustaceans, 32.4% of fishes and 6.7% of shellfishes presences. Of 150 food remnants the prey corresponds to 55.3% of crustaceans, 44.0% of molluscs and 0.7% of birds. The two analyses carried out had a slow similarity (= 0.35 ± 0.22). L. felina preys on resources exploited by artisanal fishing, but fishing gears are not damaged by this marine mammal. A 66.7% of the fishermen said that otters not affect their fishing, while 30.0% said the opposite; holding as cause the consumption by L. felina on the same resources exploited by them (e.g., Concholepas concholepas). Although this mammal does not cause significant damage to local fisheries still exists at present, however, illegal hunting of this otter in the study area. The reasons for this action ranging from the sale of their skin until his killing by a simple recreation.

Interacción entre la pesca artesanal y el depredador de alto nivel trófico Lontra felina en Chile