Channel Islands 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: ttp://en.wikipedia.org/wiki/Channel_Island
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Stehmann, M. and D.L. Bürkel, 1984
National Database:

Common names from other countries

Raie lisse, Raya boca de rosa, شِفنين بحري مَلْسَة, ... 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).

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

seewasser demersal; tiefenbereich 10 - 380 m (Ref. 6808). Temperate; 60°N - 22°N, 18°W - 24°E

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

Eastern Atlantic: Shetland Islands to Morocco, Rio de Oro (Western Sahara), and Madeira.

Length at first maturity / Size / Gewicht / Alter

Maturity: L_m 90.2, range 60 - ? cm
Max length : 120 cm TL Männchen/unbestimmt; (Ref. 41333); 125.0 cm TL (female); max. veröff. Gewicht: 14.3 kg (Ref. 40637)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt) : 0; Afterflossenstacheln: 0. Upper surface wholly prickly, except in juveniles; underside only prickly along front margins of disc; orbital thorns separate; a regular median row of 40-45 thorns in juveniles and adult females, interrupted on back in males; 60-90 tooth rows; upper surface ochre, with numerous small dark spots to margins of disc, underside white (Ref. 3167).

Found on sand and sand-rock bottoms (Ref. 6808). Feed on all kinds of benthic animals (Ref. 3167). Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). Egg capsules are 10.0-14.3 cm long and 5.8-9.0 cm wide (Ref. 41250). About 40-90 eggs are laid per individual every year (Ref. 41250).

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

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Spawning mainly from February to August with at least 30 egg-cases laid (Ref. 3167). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205).

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) ; Date assessed: 01 December 2008

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

Fischereien: weniger kommerziell; Sportfisch: ja

FAO(Fischereien: production; publication : search) | FishSource | Sea Around Us

Mehr Information

Trophic ecology
Nahrungsorganismen
Diet compositions
Food consumptions
Food rations
Räuber

Ecology
Ökologie
Home ranges

Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Längenhäufigkeiten
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Recruitments
Abundances

Life cycle
Fortpflanzung
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Spawnings
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Egg(s)
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Distribution
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Anatomy
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Gehirngröße
Otoliths

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

Genetics
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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): 7.1 - 16.2, mean 10.3 (based on 462 cells).

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

Bayesian length-weight: a=0.00224 (0.00144 - 0.00349), b=3.27 (3.15 - 3.39), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.8 ±0.61 se; based on food items.

Widerstandsfähigkeit (Ref. 120179): niedrig, Verdopplung der Population dauert 4,5 - 14 Jahre. (K=0.12-0.19; tmax=15; Fec=40).

Prior r = 0.20, 95% CL = 0.13 - 0.30, Based on 1 full stock assessment.

Fishing Vulnerability (Ref. 59153): High to very high vulnerability (65 of 100).

Climate Vulnerability (Ref. 125649): High vulnerability (61 of 100).

Preiskategorie (Ref. 80766): Medium.

Raja brachyura Lafont, 1873