Crab, Velvet swimming

Necora puber

Method of production — Caught at sea
Capture method — Pot or creel
Capture area — North East Atlantic (FAO 27)
Stock area — Cornwall
Stock detail — 7e, 7f, 7g, 7h
Picture of Crab, Velvet swimming

Sustainability rating three info

Sustainability overview

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Cornwall Good Seafood Guide Cornwall Good Seafood Guide

Biology

The Velvet crab is part of the Portunidae (Swimming crabs) family. Itas found in north-west Europe from Norway to the Shetlands and south to Spain and the Canary Isles and in the Mediterranean off the coast of Malta. It inhabits rocky substrates, down to depths of 25m. They donat appear to migrate very far: movements are restricted to a few hundred metres. They are a fast moving and aggressive species, feeding mainly on brown algae.

Velvet crabs generally live up to four to six years old and reach sexual maturity around 40 mm (1.5 years), varying with location. In the Shetlands, males mature at 45mm and females 56mm. They produce between 5,000 and 278,000 eggs per female. Females grow more slowly and to smaller sizes than males. Males mainly moult between April and July and females moult between May and August. Mating occurs after females have moulted.

Stock information

Criterion score: 0.5 info

Stock Area

Cornwall

Stock information

Management

Criterion score: 0.75 info

Capture Information

Criterion score: 0 info