Ecology Summary - Polydactylus sextarius

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Main Ref.	Daget, J. and J.C. Njock, 1986
Remarks	A marine species found on muddy bottoms of the continental shelf. Frequently enters estuaries and is found over sand or sand-mud flats in 19 to 73 m depth (Ref. 9685); also inhabits coral reefs (Ref. 58534). Feeds mainly on small crustaceans (especially shrimps), fishes and benthic organisms; also on sponges and fish scales. The progression in this hermaphrodite is protandrous, changing from a juvenile to a hermaphrodite, then a female.

Main Ref.

Daget, J. and J.C. Njock, 1986

Remarks

A marine species found on muddy bottoms of the continental shelf. Frequently enters estuaries and is found over sand or sand-mud flats in 19 to 73 m depth (Ref. 9685); also inhabits coral reefs (Ref. 58534). Feeds mainly on small crustaceans (especially shrimps), fishes and benthic organisms; also on sponges and fish scales. The progression in this hermaphrodite is protandrous, changing from a juvenile to a hermaphrodite, then a female.

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 Polydactylus sextarius may be found.

Habitat

Substrate	Soft Bottom
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.	Feltes, R.M., 2001
Feeding habit	hunting macrofauna (predator)
Feeding habit Ref.	Feltes, R.M., 2001

Trophic Level(s)

Estimation method	Original sample		Unfished population		Remark
Estimation method	Troph	s.e.	Troph	s.e.	Remark
From diet composition
From individual food items	3.79	0.57			Trophic level estimated from a number of food items using a randomized resampling routine.
Ref.

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