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1 March 2011 Entanglement and Drowning of a Magellanic Penguin (Spheniscus magellanicus) in a Gill Net Recorded by a Time-Depth Recorder in South-Central Chile
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Abstract

Various mitigation measures have been implemented to reduce incidental seabird mortality in longline and trawl fisheries but little attention has been given to artisanal fishing. In the 2008/09 breeding season, during a study of foraging of Humboldt, Spheniscus humboldti, and Magellanic Penguins, S. magellanicus, breeding on Puñihuil islets, southern Chile, a Magellanic Penguin equipped with a time-depth recorder became entangled and subsequently drowned in a gill net set for Corvina Drum (Cilus gilberti). The device was returned by fishermen and the data appear to be the first documented case of such a drowning in a marine, air-breathing vertebrate. According to the data, while diving to a depth of more than 50 m, the bird became entangled and drowned, remaining below 60 m for nearly 21 hours until the net was hauled. Although only a single incident is reported, there are indications that incidental mortality of penguins, other seabirds and marine mammals is more common in artisanal fisheries than previously anticipated.

Klemens Pütz, Luciano Hiriart-Bertrand, Alejandro Simeone, Victoria Riquelme, Ronnie Reyes-Arriagada, and Benno Lüthi "Entanglement and Drowning of a Magellanic Penguin (Spheniscus magellanicus) in a Gill Net Recorded by a Time-Depth Recorder in South-Central Chile," Waterbirds 34(1), (1 March 2011). https://doi.org/10.1675/063.034.0117
Received: 20 April 2010; Accepted: 1 July 2010; Published: 1 March 2011
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