Ecology of Halichoerus grypus
 
Main Ref. Jefferson, T.A., S. Leatherwood and M.A. Webber, 1993
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 Halichoerus grypus may be found.
Remarks Found in coastal areas; they haul-out on isolated beaches and rocky ledges of islands. Feeds on a wide variety of fishes and invertebrates and occasionally take seabirds (Ref. 1394).

Substrate

Substrate Hard Bottom: rocky;
Substrate Ref. Jefferson, T.A., S. Leatherwood and M.A. Webber, 1993
Special habitats
Special habitats Ref.

associations

Ref. Jefferson, T.A., S. Leatherwood and M.A. Webber, 1993
associations
Associated with
Association remarks
Parasitism

feeding

feeding type mainly animals (troph. 2.8 and up)
feeding type ref Jefferson, T.A., S. Leatherwood and M.A. Webber, 1993
feeding habit hunting macrofauna (predator)
feeding habit ref Jefferson, T.A., S. Leatherwood and M.A. Webber, 1993
trophic level(s)
original sample unfished population Remark
estimation method Troph s.e. Troph s.e.
From diet composition 4.50 0.80 Troph of juv./adults.
Ref. Prime, J.H. and P.S. Hammond, 1990
From individual food items 4.49 0.96 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 06.27.06
Modified by Sorongon-Yap, Patricia on 06.20.14
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