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Atlantic Long-finned Squid Loligo pealei


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Atlantic Long-finned Squid
credit: SEFSC Pascagoula Laboratory

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Category: Cephalopods view all from this category

Description The Longfin Inshore Squid (Doryteuthis pealeii) is a species of squid of the family Loliginidae. The Longfin Inshore Squid is found in the North Atlantic, schooling in continental shelf and slope waters from Newfoundland to the Gulf of Venezuela. It is commercially exploited, especially in the range from the Southern Georges Bank to Cape Hatteras.

The Longfin Inshore Squid spawns year-round and lives for less than one year. Individuals hatched in summer generally grow more rapidly than those hatched in winter due to the warmer temperature of the water. The species presents sexual dimorphism, with most males growing faster and reaching larger sizes than females. The dorsal-mantle length of some males can reach 50 cm, although most squids commercially harvested are smaller than 30 cm long.

This species is a model organism in neuroscience and was used by Andrew Huxley and Alan Hodgkin in their studies on axons. They are also used for research on replicating their camouflage abilities due to the chromatophores in their skin, which reflect a different color depending on the angle at which the light is hitting them.

Habitat Open ocean, Coral reefs.

Range New England, Eastern Canada, Florida, Mid-Atlantic.