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| Main Ref. | Holthuis, L.B., 1991 |
|---|---|
| Remarks | 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). |
| Marine - Neritic | Marine - Oceanic | Brackishwater | Freshwater | |
|---|---|---|---|---|
| Marine zones / Brackish and freshwater bodies |
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| Substrate | Benthic: mobile; Soft Bottom: mud; Hard Bottom: rocky; |
|---|---|
| Substrate Ref. | Holthuis, L.B., 1991 |
| Special habitats | Beds: algae/seaweed; rock; |
| Special habitats Ref. | Elner, R.W. and A.C. Campbell, 1987 |
| Ref. | Holthuis, L.B., 1991 |
|---|---|
| Associations | |
| Associated with | |
| Association remarks | |
| Parasitism |
| Feeding type | mainly animals (troph. 2.8 and up) |
|---|---|
| Feeding type Ref. | Elner, R.W. and A.C. Campbell, 1987 |
| Feeding habit | hunting macrofauna (predator) |
| Feeding habit Ref. | Elner, R.W. and A.C. Campbell, 1987 |
| Estimation method | original sample | unfished population | Remark | ||
|---|---|---|---|---|---|
| Troph | s.e. | Troph | s.e. | ||
| From diet composition | 3.70 | 0.39 | 4.22 | 0.68 | Troph of juv./adults. |
| From individual food items | 3.36 | 0.59 | Trophic level estimated from a number of food items using a randomized resampling routine. | ||
| Ref. | Sainte-Marie, B. and D. Chabot, 2002 | ||||