Liberia country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments:
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/li.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Stehmann, M., 1990
National Database:

Common names from other countries

Skate, Peixe-areia, 斯氏鳐, ... more

Klassifizierung / Names Namen | Synonyme | Catalog of Fishes(Gattung, Arten) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (Haie und Rochen) (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: Raja: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335); straeleni: Named after V. Van Straelen, director of IRSNB, Belgium (Ref. 377).
More on author: Poll.

Environment: milieu / climate zone / depth range / distribution range Ökologie

seewasser demersal; ozeanodrom; tiefenbereich 80 - 800 m (Ref. 11284), usually 100 - 300 m (Ref. 26999). Tropical; 15°N - 30°S

Verbreitung Länder | FAO Gebiete | Ecosystems | Vorkommen | Point map | Einführungen | Faunafri

Eastern Atlantic: Rio de Oro, Western Sahara to South Africa.

Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 70.0 cm TL Männchen/unbestimmt; (Ref. 26999); 67.0 cm TL (female); max. veröff. Gewicht: 1.4 kg (Ref. 377); max. veröff. Gewicht: 1.4 kg

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

A black-spotted skate with a blunt, angular snout, a long, stout tail, and a broad angular disc; strong thorns on upper surface of disc and tail at all stages, sometimes on underside in large individuals (Ref. 5578). Brown to grey dorsally, with small to large black spots, whorls and blotches; many with gold and black, traversely oblong eyespot on each pectoral base; white ventrally with no dark pores (Ref. 5578). Juveniles have no dark spots above (Ref. 2708).

Found in shallow enclosed bays and on the slope (Ref. 5578). Feeds on invertebrates, bony fishes and fish offal. Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205). Caught by shore and ski-boat anglers and by hake trawlers. Pectoral fins sold as 'skate wings' (Ref. 5578). Undergoes regular migration, towards the coast during the warm season and towards deep waters in winter (Ref. 5377).

Life cycle and mating behavior Maturities | Fortpflanzung | Spawnings | Egg(s) | Fecundities | Larven

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449).

Hauptreferenz Upload your references | Referenzen | Koordinator : McEachran, John | Partner

McEachran, J.D. and K.A. Dunn, 1998. Phylogenetic analysis of skates, a morphologically conservative clade of elasmobranchs (Chondrichthyes: Rajidae). Copeia 1998(2):271-290. (Ref. 27314)

IUCN Rote Liste Status (Ref. 130435)

Gefährdung zunehmend (NT) (A2bd); Date assessed: 04 August 2020

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

Fischereien: kommerziell; Sportfisch: ja

FAO(Publication : search) | FishSource |

Mehr Information

Trophic ecology
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Räuber

Ecology
Ökologie
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Population dynamics
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Length-weight rel.
Length-length rel.
Längenhäufigkeiten
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Recruitments
Abundances

Life cycle
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Fecundities
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Egg(s)
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Distribution
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Anatomy
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Gehirngröße
Otoliths

Physiology
Body compositions
Nutrients
Oxygen consumptions
Swimming type
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Visual pigment(s)
Fisch Laute
Diseases / Parasites
Toxicities (LC50s)

Genetics
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Electrophoreses
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Human related
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Aquakultur Profile
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Ciguatera cases
Stamps, coins, misc.

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Zusammenfassung | Point data | Namen | Photos

Internet Quellen

Estimates based on models

Preferred temperature (Ref. 115969): 10.2 - 15.7, mean 12.3 (based on 76 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00363 (0.00228 - 0.00578), b=3.21 (3.08 - 3.34), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).

Trophic level (Ref. 69278): 4.0 ±0.62 se; based on food items.

Widerstandsfähigkeit (Ref. 120179): niedrig, Verdopplung der Population dauert 4,5 - 14 Jahre. (Fec assumed to be <100).

Fishing Vulnerability (Ref. 59153): Moderate to high vulnerability (48 of 100).

Preiskategorie (Ref. 80766): Medium.

Raja straeleni Poll, 1951