Marine Science Faculty Publications

Life History of Gonatus Onyx (Cephalopoda: Teuthoidea): Deep-sea Spawning and Post-spawning Egg Care

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Lipid, Life History, Lipid Content, Adult Female, Cold Temperature

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A reproductive strategy consisting of deep- water spawning and egg-care was inferred for the midwater squid Gonatus onyx Young, 1972. Brooding females and associated eggs and hatchlings, captured between 1250 and 1750 m depth off southern California, are described. Brooding females appear to be senescent and lack tentacles. Large eggs of this species (3 mm) at cold temperatures (3 °C at capture depth) may require as long as 9 mo to develop. The high lipid content of the digestive gland in adult females of this species may provide fuel to support such an extended “brooding” period.

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Citation / Publisher Attribution

Marine Biology, v. 137, p. 519-525