Ecology of Uca tetragonon
Main Ref. Gibbs, P.E., 1978
Remarks Found in intertidal areas in mud or sand (Ref. 96667). Common below midtide level among coral heads and boulders (Ref. 104855). Estuarine (Ref. 106854). Mainly feeds on rocks covered by filamentous green algae. Makes sand pellets while feeding to separate edible from inedible materials (Ref. 104857). Displays occasional predatory behavior and cannibalism - reported to kill conspecifics and other ocypodid crabs (Ref. 104855).

Aquatic zones / Water bodies

Marine - Neritic Marine - Oceanic Brackishwater Freshwater
Marine zones / Brackish and freshwater bodies
  • supra-littoral zone
  • littoral zone
  • sublittoral zone
  • epipelagic
  • mesopelagic
  • epipelagic
  • abyssopelagic
  • hadopelagic
  • estuaries/lagoons/brackish seas
  • mangroves
  • marshes/swamps
  • rivers/streams
  • lakes/ponds
  • caves
  • exclusively in caves
Highighted items on the list are where Uca tetragonon may be found.


Substrate Benthic; Soft Bottom: sand; mud; Hard Bottom: rocky;
Substrate Ref. Fishelson, L., 1971
Special habitats Coral Reefs; Other habitats: burrows;
Special habitats Ref. Koga, T., S. Goshima, M. Murai and S. Poovachiranon, 1995


Ref. Gibbs, P.E., 1978
Associated with
Association remarks


Feeding type plants/detritus+animals (troph. 2.2-2.79)
Feeding type Ref. Takeda, S., S. Poovachiranon and M. Murai, 2004
Feeding habit variable
Feeding habit Ref. Koga, T., S. Goshima, M. Murai and S. Poovachiranon, 1995

Trophic Level(s)

Estimation method original sample unfished population Remark
Troph s.e. Troph s.e.
From diet composition
From individual food items 3.40 0.48 Trophic level estimated from a number of food items using a randomized resampling routine.
(e.g. 9948)
(e.g. cnidaria)
Entered by Sorongon-Yap, Patricia on 03.21.07
Modified by Polido, Rubyann Robelle on 07.07.20
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