Ecology of Echidna catenata
 
Main Ref. Randall, J.E., 1967
Distribution
Marine - Neritic
  • supra-littoral zone
  • littoral zone
  • sublittoral zone
Marine - Oceanic
  • epipelagic
  • mesopelagic
  • epipelagic
  • abyssopelagic
  • hadopelagic
Brackishwater
  • estuaries/lagoons/brackish seas
  • mangroves
  • marshes/swamps
Freshwater
  • rivers/streams
  • lakes/ponds
  • caves
  • exclusively in caves
Highighted items on the list are where Echidna catenata may be found.
Remarks A benthic species (Ref. 26340) found commonly on reefs and rocky shore areas . Feeds on small fishes and crustaceans (Ref. 5521). Carnivore (Ref. 57616). At Fernando de Noronha Archipelago, off NE Brazil, forages for sally lightfoot crabs (Grapsus grapsus) on exposed reefs at ebb tide and in tide-pools mostly at daytime. Able to withstand up to 30 minutes out of water while foraging, uses four main tactics both in and out of the water. Searches for prey at pool rims and rock bases poking into crevices and holes, stealthily approaches previously sighted prey, chases prey and ambushes prey from under rocks and crevices. Hunting success varies with employed tactic, but overall success is about 50%. May move up to 6 meters in about 1 hour while foraging on the exposed reef. Its crab hunting is mostly visually guided and a fish darting nearby a stealthily foraging moray may cause it to miss the strike; the missed crab may be chased up to 5 m on the reef. Able to strike with its body partly or entirely out of the water, usually strikes from a distance of 5 to10 centimeters. Small crabs are swallowed whole, whereas larger ones are torn apart by a combination of tugging, rotating, knotting, and thrashing movements. Handling time is related to prey size, the largest crabs (carapace width 2.3-3.2 times larger than moray’s head width) broken up and swallowed within 90 to 240 seconds. Attracted to plastic or rubber decoys dragged on a nylon string nearby, striking at these (Ref. 50922).

Substrate

Substrate : rocky;
Substrate Ref. Martin, F.D. and J.W. Patus, 1984
Special habitats Coral Reefs;
Special habitats Ref.

Associations

Ref. Claro, R., 1994
Associations solitary;
Associated with
Association remarks
Parasitism

Feeding

Feeding type mainly animals (troph. 2.8 and up)
Feeding type ref Randall, J.E., 1967
Feeding habit hunting macrofauna (predator)
Feeding habit ref Randall, J.E., 1967
Trophic level(s)
Original sample Unfished population Remark
Estimation method Troph s.e. Troph s.e.
From diet composition 3.50 0.60
Ref. Randall, J.E., 1967
From individual food items 3.55 0.59 Trophic level estimated from a number of food items using a randomized resampling routine.
(e.g. 346)
(e.g. cnidaria)
Entered by Sa-a, Pascualita on 04.04.95
Modified by Ortañez, Auda Kareen on 03.19.08
Checked by Miranda, Lilibeth on 07.16.01
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