Abstract
Diet studies of marine predators provide insights into the functioning and structure of marine ecosystems. Such studies have been greatly enhanced in recent years with technology enabling direct observation of feeding behaviour in the marine environment. We here report on observations of an interesting predation event involving Gentoo penguins (Pygoscelis papua) at sub-Antarctic Marion Island. Through the deployment of an animal-borne miniaturised video data logger, we were able to document what is to our knowledge the largest recorded prey species consumed by a Gentoo penguin. A squid (probably Greater hooked squid, Onykia ingens) with an estimated mantle length of 240 mm was consumed whole after a period of competition over the prey item with another foraging Gentoo penguin.
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