Diet Analysis Shows Colossal Squid Target Large Antarctic Toothfish

Scars on Antarctic toothfish reveal battles with one of the ocean's most elusive predators.

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Antarctic toothfish are sometimes marketed commercially as Chilean sea bass.

Examination of toothfish captured in the Southern Ocean has revealed circular scars consistent with the rotating hooks of Mesonychoteuthis hamiltoni, indicating active predation.

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Targeting large, energy-rich fish allows the colossal squid to meet its caloric needs without frequent hunting, an advantage in the sparse deep-sea environment.

These interactions also link the species to commercial fisheries, underscoring the importance of sustainable management in Antarctic waters.

Source

Antarctic Science

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