Main Ref. | Tavares, M., 2003 |
---|---|
Remarks | Occurs from the intertidal zone to 75 m (Ref. 106798). Inhabits sandy or muddy bottoms, or shell and sponge covered bottoms (young crabs). Tolerates a broad range of salinities from 0 to 50 ppm and temperatures of 18 to 31°C. May be seen in bays or river mouths or even in freshwaters, but is abundant in waters of relatively high salinities. Feeds on mollusks, other bottom invertebrates, fishes, carrion and detritus. Albinistic individuals occur where substrates are light colored (Ref. 367). |
Marine - Neritic | Marine - Oceanic | Brackishwater | Freshwater | |
---|---|---|---|---|
Marine zones / Brackish and freshwater bodies |
|
|
|
|
Substrate | Benthic: mobile; Soft Bottom: sand; mud; Hard Bottom: rubble; |
---|---|
Substrate Ref. | Melo, G.A.M., 1996 |
Special habitats | Beds: others; |
Special habitats Ref. |
Ref. | |
---|---|
Associations | |
Associated with | |
Association remarks | |
Parasitism |
Feeding type | plants/detritus+animals (troph. 2.2-2.79) |
---|---|
Feeding type Ref. | Tavares, M., 2003 |
Feeding habit | hunting macrofauna (predator) |
Feeding habit Ref. | Tavares, M., 2003 |
Estimation method | original sample | unfished population | Remark | ||
---|---|---|---|---|---|
Troph | s.e. | Troph | s.e. | ||
From diet composition | 2.93 | 0.39 | Troph of juv./adults. | ||
From individual food items | 3.61 | 0.42 | Trophic level estimated from a number of food items using a randomized resampling routine. | ||
Ref. | Mantelatto, F.L.M. and R.A. Christofoletti, 2001 |