Ecology of Cetorhinus maximus
 
Main Ref. Compagno, L.J.V., 1984
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 Cetorhinus maximus may be found.
Remarks Selective filter feeder that orients itself towards the most productive zooplankton patches, preferring areas where zooplankton density is above 1 g/m3 (Ref. 88781). Occurrence and movements appear to be correlated to sea surface temperature, in particular to the thermal boundaries at tidal and shelf-break fronts (as these areas may have seasonally productive zooplankton patches which the shark locates and utilizes) (Ref. 50200, 88781, 88826). Often in close association with shoals of other fish such as Clupea harengus and Scomber scombrus in the Northern Atlantic (Ref. 310). During the summer months the basking shark is often seen swimming slowly near the surface with its large mouth held open for approximately 30 to 60 seconds. Water passively enters its mouth, possesses long bristly gill rakers on long gill arches to filter out the zooplankton. It periodically closes its mouth and forcefully constricts its gill arches, probably as a means to expel as much water from the buccal cavitiy (Ref. 33579). On average, about half a tonne of plankton may be found in an individual’s stomach (Ref. 43278). During the winter months found to inhabit the deeper waters of the shelf and shelf edges of the northeast Atlantic (Ref. 50200), the winter diving behaviour may be related to the search for discrete calanoid patches at deeper depths (Ref. 50200).

Substrate

Substrate
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 Pauly, D., 1989
Feeding habit filtering plankton
Feeding habit ref Hallacher, L.E., 1977
Trophic level(s)
Original sample Unfished population Remark
Estimation method Troph s.e. Troph s.e.
From diet composition 3.20 0.30 3.19 0.28 Troph of juv./adults from 1 study.
Ref. Cortés, E., 1999
From individual food items 3.31 0.32 Trophic level estimated from a number of food items using a randomized resampling routine.
(e.g. 346)
(e.g. cnidaria)
Entered by Luna, Susan M. on 02.14.91
Modified by Franke, Andrea on 12.08.11
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