First observations of operational interactions between bottom-trawling fisheries and South American sea lion, Otaria flavescens in south-central Chile.
otaria flavescens
Hucke-Gaete, R, Reyes, P, Torres-Florez, J. P
https://www.cambridge.org/core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom/article/abs/first-observations-of-operational-interactions-between-bottomtrawling-fisheries-and-south-american-sea-lion-otaria-flavescens-in-southcentral-chile/C9FFB73C183E1C379E61F530EB973009
Este artículo presenta los resultados de un estudio realizado en la flota pesquera industrial de arrastre de Merluccius gayi en el centro-sur de Chile, y las interacciones resultantes con el lobo marino sudamericano (Otaria flavescens). Este estudio se basa en observaciones realizadas en septiembre de 2004, cuando la captura incidental de lobos marinos en los arrastres fue de 6.3 lobos marinos/día de trabajo (1.2 lobos marinos/arrastre−1). Un total de 82 animales fueron capturados incidentalmente, de los cuales 12 fueron encontrados muertos, y los 70 restantes sufrieron hemorragias internas y/o fracturas como resultado de su captura. El 83.3% de las muertes ocurrieron durante los arrastres nocturnos, que comprenden el 30% de todos los arrastres observados. Se discuten los posibles mecanismos de captura de lobos marinos. Esta nota presenta los primeros registros de captura incidental de lobos marinos por la flota de arrastre a lo largo de la costa suroriental del Pacífico de Chile.
This paper presents results of a study conducted on the trawling industrial fishery fleet of Merluccius gayi in south-central Chile, and the resulting interactions with the South American sea lion (Otaria flavescens). This study is based on observations made during September 2004, when incidental sea lion catch in the trawls was 6.3 sea lions/working day (1.2 sea lions/trawl−1). A total of 82 animals were incidentally caught, of which 12 were found dead, and the 70 remaining suffered from internal bleeding and/or fractures as a result of their capture. 83.3% of the fatalities occurred during nocturnal trawls, which comprise 30% of all observed trawls. Possible mechanisms of sea lion take are discussed. This note presents the first records of sea lions incidental by-catch by the trawler fleet along the south-east Pacific coast of Chile.
