Ecology Summary - Percilia irwini
Ecology of Percilia irwini
 
Main Ref. Ruiz, V.H. and T.M. Berra, 1994
Remarks Exhibits a gradient of abundance from low numbers in rithral/transitional habitats in headwater areas to higher numbers in potamal areas in the middle-lower reaches in rivers. Bentho-pelagic ?sh inhabiting shallow (<1 m) and slow waters of lakes (Laja, Icalma and Galletue´ ) and rivers. They occur over boulders or a mixed substrate of boulders, gravel and sand patches. Feeds mainly on chironomid larvae and other aquatic insects (may?ies, caddis?ies) and small mollusks (Ref. 58887).

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 Percilia irwini may be found.

Habitat

Substrate : sand; Hard Bottom: rocky;
Substrate Ref.
Special habitats
Special habitats Ref.

Associations

Ref.
Associations
Associated with
Association remarks
Parasitism

Feeding

Feeding type mainly animals (troph. 2.8 and up)
Feeding type Ref. Habit, E. and M.C. Belk, 2007
Feeding habit hunting macrofauna (predator)
Feeding habit Ref. Habit, E. and M.C. Belk, 2007
Trophic Level(s)
Estimation method Original sample Unfished population Remark
Troph s.e. Troph s.e.
From diet composition
From individual food items 3.30 0.43 Trophic level estimated from a number of food items using a randomized resampling routine.
Ref.
(e.g. 9948)
(e.g. oophagy)
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