-
- حول هذة الصفحة
- اللغات
- User feedbacks
- اقتباس
- Uploads
- انواع ذات صلة
-
Leucoraja circularis (Couch, 1838)
Sandy ray
إضافة ملاحظاتك Fish Watcher
| Native range | All suitable habitat | Point map | Year 2050 |
|
| This map was computer-generated and has not yet been reviewed. |
| Leucoraja circularis AquaMaps Data sources: GBIF OBIS |
ارفع صور و مقاطع فيديو
Pictures | صور قوقل
Leucoraja circularis
Picture by FAO
Pictures | صور قوقل
Picture by FAO
Portugal country information
Common names:
Raia-de-São-Pedro
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments:
National Checklist: Portugal
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/po.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Stehmann, M. and D.L. Bürkel, 1984
National Database: Portuguese Freshwater Fishes
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments:
National Checklist: Portugal
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/po.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Stehmann, M. and D.L. Bürkel, 1984
National Database: Portuguese Freshwater Fishes
Common names from other countries
التصنيف / Names الأسماء الشائعة | مرادفات | Catalog of Fishes(جنس, الانواع) | ITIS | CoL | WoRMS | Cloffa
أشلاق (القروش و الشفانين) (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: Leucoraja: Greek, leykos = white + Latin, raja = a fish, Raja sp. (Ref. 45335).
Etymology: Leucoraja: Greek, leykos = white + Latin, raja = a fish, Raja sp. (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range البيئة
بحري القاع; نطاق العمق 10 - 800 m (Ref. 106604). Temperate; 67°N - 27°N, 25°W - 37°E
التوزيع دول | مناطق الفاو | النظام البيئي | الظهور | Point map | مقدمة | Faunafri
Eastern Atlantic (Iceland, southern Norway, Skagerrak and Morocco) and the Mediterranean Sea.
Records as far south to Mauritania and Senegal could not be verified due to lacking descriptions and specimens; most are probably misidentifications of Leucoraja leucosticta.
الحجم / وزن / العمر
Maturity: Lm ? range ? - ? cm
Max length : 120 cm TL ذكر/ مختلط الجنس; (Ref. 4426); 117.0 cm TL (female); common length : 70.0 cm TL ذكر/ مختلط الجنس; (Ref. 4426)
Max length : 120 cm TL ذكر/ مختلط الجنس; (Ref. 4426); 117.0 cm TL (female); common length : 70.0 cm TL ذكر/ مختلط الجنس; (Ref. 4426)
وصف مختصر مفاتيح التعريف | الوصف الخارجي | قياسات المظهر الخارجي
الأشواك الظهرية (المجموع) : 0; شوكة شرجية: 0. Snout short, its tip somewhat pronounced; upper surface entirely spinulose, about 8 thorns generally in a complete row around inner margin of eye and a triangle of thorns on nape or shoulder region; underside with prickles only on snout, between gill-slits, along abdomen, and at anterior margins of disc; tail only slightly longer than body; upper surface reddish-brown to dark brown with 4-6 creamy spots on each wing, underside white (Ref. 3167).
Found in offshore shelf waters and on upper slope, mainly around the 100 m line (Ref. 3167). Depth range from 70-275 m (Ref. 03167), and from 463-676 m in eastern Ionian Sea (Ref. 56504). 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 8.3-9.2 cm long and 4.6-5.3 cm wide (Ref. 41303, 41251, 41311). Maximum length for female is 117 cm (Ref. 41333).
Life cycle and mating behavior النضج | التكاثر | وضع البيض | بيض | الخصوبة | Larvae
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). With no definite egg laying period (Ref. 3167). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205).
المرجع الرئيسي
Upload your references | مراجع | المنظم : McEachran, John | المتعاونين
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: Version 2024-2)
في خطر (EN) (A2bcd); Date assessed: 30 October 2014
خطر للأنسان
Harmless
استخدامات بشرية
مصائد: غير مهمة تجارياً
FAO(مصائد: الأنتاج; publication : search) | FishSource | البحر حولنا
مزيد من المعلومات
Population dynamics
معاملات النمو
Max. ages / sizes
Length-weight rel.
Length-length rel.
الطول- الترددات
Mass conversion
توظيف
الوفرة
معاملات النمو
Max. ages / sizes
Length-weight rel.
Length-length rel.
الطول- الترددات
Mass conversion
توظيف
الوفرة
Physiology
Body composition
Nutrients
استهلاك الأوكسجين
نوع السباحة
سرعة السباحة
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Body composition
Nutrients
استهلاك الأوكسجين
نوع السباحة
سرعة السباحة
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Human related
Aquaculture systems
ملامح تربية الأحياء المائية
سلالات
Ciguatera cases
Stamps, coins, misc.
Aquaculture systems
ملامح تربية الأحياء المائية
سلالات
Ciguatera cases
Stamps, coins, misc.
أدوات
E-book | دليل الميدان | مفاتيح التعريف | Length-frequency wizard | أداة تاريخ الحياة | نقطة علي الخريطة | Classification Tree
| Catch-MSY |
تقارير خاصة
البحث عن صيانت الأحواض المائيه | التحقق من وجود صفحات حقائق الأنواع | البحث عنا حقائق حول الأحواض المائيه
Download XML
مصادر علي الأنترنت
Aquatic Commons | BHL | Cloffa | Websites from users | البحث في مراقبي الأسماك | CISTI | Catalog of Fishes(جنس, الانواع) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(الوراثة, نيوكلوتيدة) | GloBI | GOBASE | | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | قاعدة البينات الوطنية | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | شجرة الحياة | Wikipedia(ذهب, بحث) | World Records Freshwater Fishing | سجلات علم الحيوانات
Estimates based on models
Preferred temperature (Ref. 115969): 7.5 - 14.2, mean 11.3 (based on 116 cells).
Phylogenetic diversity index (Ref. 82804): PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00269 (0.00166 - 0.00436), b=3.20 (3.06 - 3.34), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
مستوى غذائي (Ref. 69278): 3.5 ±0.37 se; based on food items.
المرونه (Ref. 120179): منخفض, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع 4.5-14 سنة (Fec assumed to be <100).
Fishing Vulnerability (Ref. 59153): High to very high vulnerability (72 of 100).
Climate Vulnerability (Ref. 125649): Moderate to high vulnerability (48 of 100).