Mauritania country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: commercial | Ref: Mohamed Fall, K.O., 2005
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Museum: ISH 1252-1982.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/mr.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Stehmann, M., 1990
National Database:

Common names from other countries

Raie fleurie, Raya santiguesa, Butterfly skate, ... more

Classification / Names आम नाम | उपशब्द | Catalog of Fishes(वर्ग, प्रजाति) | ITIS | CoL | WoRMS | Cloffa

इलाज़मौबरांकी (शारक और रेज़) (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: Leucoraja: Greek, leykos = white + Latin, raja = a fish, Raja sp. (Ref. 45335).
More on authors: Müller & Henle.

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

समुद्री ड़िमरसल; गहराई सीमा 12 - 900 m (Ref. 106604), usually 20 - 250 m (Ref. 11284). Subtropical; 63°N - 15°N, 18°W - 36°E

वितरण देश | ऐफ ऐ ओ क्षेत्र | Ecosystems | संयोग | Point map | भूमिका | Faunafri

Eastern Atlantic: Kattegat (Ref. 3167) and North Sea, around Great Britain, Ireland and the Mediterranean to Morocco and Senegal.

Length at first maturity / आकार / वज़न / Age

Maturity: L_m 57.5, range 45 - 71.8 cm
Max length : 81.0 cm TL पुल्लिंग / अलिंग; (Ref. 106604); 68.0 cm TL (female); common length : 40.0 cm TL पुल्लिंग / अलिंग; (Ref. 3261)

Short description पहचान कुंजी | आकृति विज्ञान | मौरफोमैटरिक्स

पृष्ठीय रीढ़ (सम्पूर्ण) : 0; गुदा कांटा: 0. Snout short; upper surface entirely spinulose, but centre of pectoral fins more or less bare in adults, underside smooth except for prickly front edges; generally 9-13 thorns in a complete row around inner margin of eye, and a large triangle of thorns on nape or shoulder region; two parallel rows of strong thorns on each side of midline along tail; upper surface ochre to light greyish-brown with a large roundish black eye-spot in middle of each pectoral fin, underside white (Ref. 3167)

Feed on all kinds of bottom 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 5.0-7.0 cm long and 3.1-3.9 cm wide (Ref. 41250). Around 70-150 eggs are laid per individual annually (Ref. 41250).

Life cycle and mating behavior Maturities | पुनरुत्पत्ति | Spawnings | Egg(s) | Fecundities | लार्वा

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205).

Main reference Upload your references | संदर्भ | संयोजक : McEachran, John | सहयोगीयो

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 Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 25 November 2014

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

मात्स्यिकी: व्यापारिक; जलजीवालय: सार्वजनिक लजीवालय

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

अधिक जानकारी

Trophic ecology
खाद्य पदार्थ
Diet compositions
Food consumptions
Food rations
परभक्षी

Ecology
पारिस्थितिकी
Home ranges

Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances

Life cycle
पुनरुत्पत्ति
Maturities
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Spawnings
Spawning aggregations
Egg(s)
Egg developments
लार्वा
लारवल गतिकी

Distribution
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ऐफ ऐ ओ क्षेत्र
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Anatomy
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Otoliths

Physiology
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Swimming type
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Visual pigment(s)
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Diseases / Parasites
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Genetics
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Human related
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जलीयकृषि रूपरेखाऐ
खींच
Ciguatera cases
Stamps, coins, misc.

Outreach
सहयोगीयो

Taxonomy
आम नाम
उपशब्द
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तस्वीरे

References
संदर्भ

साधन

Special reports

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Summary page | Point data | आम नाम | Photos

इंटरनेट स्रोत

Estimates based on models

Preferred temperature (Ref. 115969): 7.2 - 16.7, mean 10.5 (based on 1278 cells).

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

Bayesian length-weight: a=0.00245 (0.00211 - 0.00285), b=3.22 (3.18 - 3.26), in cm Total Length, based on LWR estimates for this species (Ref. 93245).

Trophic level (Ref. 69278): 4.2 ±0.3 se; based on diet studies.

लौटाव (Ref. 120179): निम्न, न्यूनतम जनसंख्या दुगनी होने का समय 4.5 - 14 वर्ष। (K=0.11-0.16; tm=8-9; tmax=28; Fec<100).

Prior r = 0.41, 95% CL = 0.27 - 0.61, Based on 1 full stock assessment.

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

Climate Vulnerability (Ref. 125649): Low to moderate vulnerability (35 of 100).

Price category (Ref. 80766): Medium.

Leucoraja naevus (Müller & Henle, 1841)