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Nature. 2005 Dec 15;438(7070):929.

Post-spawning egg care by a squid.

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  • 1Monterey Bay Aquarium Research Institute, Moss Landing, California 95039, USA.


Gonatus onyx is one of the most abundant cephalopods in the Pacific and Atlantic Oceans and is an important prey species for a variety of vertebrate predators, but a full understanding of its life history has been hampered because spawning occurs at great depths, where observation is difficult. Here we describe post-spawning egg care, or brooding, in this deep-sea squid. Our finding is unexpected because this behaviour differs from the reproductive habits of all other known squid species.

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