Malacostraca | Decapoda
Environment: milieu / climate zone / depth range / distribution range
Benthic; depth range 0 - 480 m (Ref. 4), usually 4 - 50 m (Ref. 4). Temperate, preferred 6°C (Ref. 107945); 54°N - 35°N, 78°W - 52°W (Ref. 4)
Northwest Atlantic and Western Atlantic.
Length at first maturity / Size / Weight / Age
Maturity: Lm 1.0  range ? - ? cm Max length : 114 cm TL male/unsexed; (Ref. 81053); common length : 25.0 cm TL male/unsexed; (Ref. 4); max. published weight: 1.7 kg (Ref. 81053)
Benthic in coastal and shelf waters (Ref. 106894). Possibly a selective feeder, preying mainly on crabs, echinoderms, mussels and polychaetes but also ingesting algae and seaweeds, with a complex foraging behavior and thus capable of maintaining gross diet composition despite of sharp variations in prey availability, seasonality and ontogenetic changes, e.g., molt- and size-related diet shifts (Ref. 33024). Migration does not occur, or only to a limited scale (Ref. 4).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
The females carry their eggs for 10 to 11 months, ovigerous females are found throughout the year (Ref. 4). 0.5 broods per year (Ref. 81148); 0.15 cm postlarval size (Ref. 81158); 1 month pelagic period (Ref. 81159).
Holthuis, L.B. 1991. (Ref. 4)
IUCN Red List Status (Ref. 124695)
CITES status (Ref. 108899)
Threat to humans
Fisheries: highly commercial
FAO - Fisheries: landings, species profile | FishSource | Sea Around Us
Estimates of some properties based on models
): 2.7 - 15.4, mean 10.2 (based on 112 cells).
Prior r = 0.57, 95% CL = 0.37 - 0.85, Based on 5 stock assessments.
Moderate to high vulnerability (46 of 100)