Ecology Summary - Carcharhinus leucas

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Main Ref.	Wetherbee, B.M., S.H. Gruber and E. Cortes, 1990
Remarks	A coastal and freshwater shark inhabiting shallow waters especially in bays, estuaries, rivers, and lakes (Ref. 244). It readily penetrates far up rivers and hypersaline bays and littoral lagoons (Refs. 9997, 44894, 81283, 9773). Capable of covering great distances, up to 180 kilometers in 24 hours, and moving between fresh and brackish water at random (Ref. 44894). Juveniles move upstream and may be found several km from the sea, adults found near estuaries (Ref. 4967). Euryhaline species. Opportunistic feeder (Ref. 9773).

Main Ref.

Wetherbee, B.M., S.H. Gruber and E. Cortes, 1990

Remarks

A coastal and freshwater shark inhabiting shallow waters especially in bays, estuaries, rivers, and lakes (Ref. 244). It readily penetrates far up rivers and hypersaline bays and littoral lagoons (Refs. 9997, 44894, 81283, 9773). Capable of covering great distances, up to 180 kilometers in 24 hours, and moving between fresh and brackish water at random (Ref. 44894). Juveniles move upstream and may be found several km from the sea, adults found near estuaries (Ref. 4967). Euryhaline species. Opportunistic feeder (Ref. 9773).

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 Carcharhinus leucas may be found.

Habitat

Substrate	Pelagic;
Substrate Ref.	Al-Abdessalaam, T.Z.S., 1995
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.	Cortés, E., 1999
Feeding habit	hunting macrofauna (predator)
Feeding habit Ref.	Wetherbee, B.M., S.H. Gruber and E. Cortes, 1990

Trophic Level(s)

Estimation method	Original sample		Unfished population		Remark
Estimation method	Troph	s.e.	Troph	s.e.	Remark
From diet composition	4.31	0.46	4.21	0.65	Troph of juv./adults from 1 study.
From individual food items	4.30	0.82			Trophic level estimated from a number of food items using a randomized resampling routine.
Ref.	Cortés, E., 1999

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