مشاهدات خود را اضافه کنيد در Fish Watcher
| Native range | All suitable habitat | Point map | Year 2050 |
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| This map was computer-generated and has not yet been reviewed. |
| Raja clavata AquaMaps Data sources: GBIF OBIS |
را بارگذاری کني تصاوير و فيلم ها
عکس ها | فيلم ها | تصوير گوگل
Raja clavata
عکس از Stergiou, K.I.
عکس ها | فيلم ها | تصوير گوگل
عکس از Stergiou, K.I.
رده بندی / نامها اسامي عام | مترادف | Catalog of Fishes(جنس, گونه ها) | ITIS | CoL | WoRMS | Cloffa
(كوسه ها و سپرماهيان) (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: Raja: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335).
More on author: Linnaeus.
Etymology: Raja: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335).
More on author: Linnaeus.
محیط زیست: محیط زیست / منطقه آب و هوایی / تغييرات عمق / محدوده توزیع بوم شناسي
دريايي نزديك كف زي; تغييرات عمق 5 - 1020 m (Ref. 114953). Subtropical; 70°N - 38°S, 25°W - 50°E
پراكنش سرزمینها | مناطق سازمان خوار و بار جهاني (FAO) | اکوسیستمها | ظهور | نقشه نقطه ای | معرفي | Faunafri
Eastern Atlantic and Southwest Indian Ocean: Iceland to Madagascar, including the Mediterranean Sea.
طول در اولین بلوغ / اندازه / وزن / سن
بلوغ: Lm 76.6, range 47 - 87.5 cm
Max length : 105 cm TL جنس نر / بدون خواص جنسي; (Ref. 53748); 139.0 cm TL (female); common length : 85.0 cm TL جنس نر / بدون خواص جنسي; (Ref. 9987); بيشينه وزن گزارش شده: 18.0 kg (Ref. 35388); بيشينه سن گزارش شده: 15 سال ها (Ref. 41305)
Max length : 105 cm TL جنس نر / بدون خواص جنسي; (Ref. 53748); 139.0 cm TL (female); common length : 85.0 cm TL جنس نر / بدون خواص جنسي; (Ref. 9987); بيشينه وزن گزارش شده: 18.0 kg (Ref. 35388); بيشينه سن گزارش شده: 15 سال ها (Ref. 41305)
توصيف مختصر كليدهاي شناسايي | ريخت شناسي | ريخت ستجي بوسيله انداره گيري
خارهاي باله پشتي (کل) : 0; خارهاي باله مخرجي: 0. Sub-rhomboid in shape with pointed wing-tips; disc-width 1,25 to 1,36 times in its length, its length 1,70 to 1,83 times in total length. Short rostrum, rounded at his extremity; pectoral fins with clear angles on lateral side; triangular pelvic fins (Ref. 39246). Dorsally prickly; large females also prickly throughout their ventral surface; juveniles and large males prickly along the margins of their discs and the underside of their snout. 30-50 thorns form a median row from the nape to the first dorsal fin; additional large 'buckler' thorns with swollen bases scattered on upper surface of disc in adults (Ref. 3167). Coloration is highly variable, with the dorsal surface having all shades of brown with dark and light spots and blotches; ventral surface white (Ref. 3167, 58137).
Body shape (shape guide): other; Cross section: flattened.
Body shape (shape guide): other; Cross section: flattened.
Inhabits shelf and upper slope waters. Reported depth ranges varies, from 10-300 m (Ref. 4426, 82319, 88187), and from 300-577 m in the eastern Ionian Sea (Ref. 56504); most common in coastal waters between 10-60 m depth (Ref. 58137). Tolerates low salinities (Ref. 88171). Found on mud, sand and gravel bottoms, rarely on rougher bottoms (Ref. 6808, 58137). Nocturnal species. Feeds on all kinds of bottom animals, preferably crustaceans (Ref. 3167) and fishes (Ref. 114953). Undertakes migrations with mean distances of 54-117 km per month; shows a clear annual migration cycle (Ref. 89017, 89018), moves from deeper offshore waters (10-30 m) in autumn and winter to shallower areas (<10 m) in spring (Ref. 82319). Young are non-migratory, inhabiting inshore nursery grounds (Ref. 89019, 89020, 89022); in the Bay of Douarnenez (France) they are found to remain in shallow waters for at least 2 years (Ref. 89023). Maturity age 7-8 years (Ref. 114953). Oviparous. Young may tend to follow large objects, such as their mother (Ref. 205). Detects weak electric fields generated by other organisms (prey detection and predator avoidance) but may also generate its own weak electric fields (Ref. 10311, 88171). Utilized fresh and frozen (Ref. 9987).
چرخه زندگی و رفتار جفتگیری بلوغ | تولید مثل | تخم ریزی | تخم ها | باروری | توزاد ( لارو)
Oviparous. Distinct pairing with embrace. Polyandrous species (Ref. 89024). Paired eggs are laid and deposited on shallow sand, mud, pebble or gravel bottoms (Ref. 205, 89025). Up to 170 egg cases can be laid by a single female in a year (Ref. 3167), but average fecundity is much lower (around 48-74 eggs) (Ref. 3603, 31302). In northwestern Europe, egg cases are laid during spring (Ref. 3167) and in the Mediterranean during winter and spring (Ref. 3167). Egg cases are oblong capsules with stiff pointed horns at the corners, each containing one embryo (Ref. 205). Capsules are 5.0-9.0 cm long without the horns (Ref. 41250, 88187) and 3.4-6.8 cm wide (Ref. 41250). Egg cases are anchored with an adhesive film (Ref. 82399). Embryos feed solely on yolk (Ref. 50449). Egg cases hatch after about 4-5 months and pups are about 11-13 cm TL (Ref. 88864). Mating season from February to September, peaking in June (Ref. 74501). Adults observed to form same-sex aggregations during the mating season with females moving to shallower inshore waters approximately a month before the males (Ref 3603, 58137, 74501). Mating does not occur in the Baltic Sea (Ref. 82311).
مآخذ اصلی
مراجع خود را بارگذاری کنید | مراجع | هماهنگ كننده : McEachran, John | همكاران
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)
وضعيت در فهرست قرمز IUCN (Ref. 130435: Version 2025-2 (Global))
نزديک به تهديد شدن (NT) (A2bd); Date assessed: 15 April 2023
CITES
Not Evaluated
خطر برای انسان ها
Harmless
استفاده انسانی
ماهي گيري – شيلات: تجاري; ماهي ها ي سرگرم كننده: بله
FAO - ماهي گيري – شيلات: landings search; Publication: search | FishSource | دریای اطراف ما
اطلاعات بيشتر
پویایی جمعیت
پارامترهای رشد
حداکثر سن/اندازه
نسبت طول-وزن.
طول-طول نسبی.
نوسانات طولی
تبدیل انبوه
بازسازی
فراواني
پارامترهای رشد
حداکثر سن/اندازه
نسبت طول-وزن.
طول-طول نسبی.
نوسانات طولی
تبدیل انبوه
بازسازی
فراواني
مرتبط با انسان
سیستمهای آبزیپروری
نمايه هاي آبزي پروري
نژادها
موارد سیگواترا
تمبر، سکه، متفرقه.
سیستمهای آبزیپروری
نمايه هاي آبزي پروري
نژادها
موارد سیگواترا
تمبر، سکه، متفرقه.
ابزارها
آزمون زیستشناسی | کتاب الکترونیکی | راهنماي صحرايي | كليدهاي شناسايي | امكان نرم افزاري بسامد طولي | ابزار تاريخ زيستي | نقشه نقطه ای |
گرفتن-MSY |
گزارش های ويژه
راجع به نگهداری آکواريم ملاحظه کنيد | برگه اطلاعات و مشخصات گونه ها را ملاحظه کنيد | برگه اطلاعات و مشخصات آبزی پروری را ببينيد
بارگيری XML
منابع اينترنتي
AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | فيش واچر را ببينيد | CISTI | Catalog of Fishes: جنس, گونه ها | DiscoverLife | DORIS | ECOTOX | FAO - ماهي گيري – شيلات: landings search; Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | پايگاه هاي داده ها | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | آکواریوم عمومی | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: برو, جستجو | World Records Freshwater Fishing | Zoobank | سوابق جانورشناسی
تخمینها بر اساس مدلها
|
شاخص تنوع فیلوژنتیکی (مرجع 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.00204 (0.00179 - 0.00233), b=3.25 (3.22 - 3.28), in cm total length, based on LWR estimates for this species (Ref. 93245). |
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سطح تروفیک (مرجع 69278) |
3.8 ±0.2 se; based on diet studies. |
| Generation time | 7.8 (5.4 - 10.4) years. Estimated as median ln(3)/K based on 16 growth studies. |
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جهندگی (مرجع 120179) |
پايين ، كم, كمينه زمان لازم براي دو برابر شدن جمعيت 5/4 – 14 سال (K=0.09-0.14; tm=10; tmax=23; Fec=150). |
| Rate of population increase | Prior r = 0.18, 95% CL = 0.12 - 0.26, Based on 4 full stock assessments. |
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آسیبپذیری ماهیگیری (Ref. 59153) |
High vulnerability (60 of 100). 🛈 |
|
آسیبپذیری اقلیمی (Ref. 125649) |
High vulnerability (60 of 100). 🛈 |
|
طبقه قيمت (Ref. 80766) |
Medium. |
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مواد مغذی (Ref. 124155) |
Calcium = 9.22 [1.18, 176.74] mg/100g; Iron = 0.628 [0.060, 7.651] mg/100g; Protein = 17.2 [14.4, 19.5] %; Omega3 = 0.571 [0.265, 1.295] g/100g; Selenium = 39.7 [7.5, 183.1] μg/100g; VitaminA = 5.22 [0.40, 59.91] μg/100g; Zinc = 0.47 [0.03, 5.30] mg/100g (wet weight); based on nutrient studies. |