(كوسه ها و سپرماهيان) (sharks and rays) >
Squatiniformes (Angel sharks) >
Squatinidae (Angel sharks)
Etymology: Squatina: Latin for skate, which angel sharks superficially resemble, presumably tautonymous with Squalus squatina Linnaeus 1758 (no species mentioned) (See ETYFish); oculata: Latin for eyed or having eyes, referring to the symmetrical ocelli seen on some specimens (See ETYFish).
More on author: Bonaparte.
محیط زیست: محیط زیست / منطقه آب و هوایی / تغييرات عمق / محدوده توزیع
بوم شناسي
دريايي نزديك كف زي; تغييرات عمق 5 - 500 m (Ref. 10719), usually 50 - 100 m (Ref. 247). Subtropical; 47°N - 29°S, 17°W - 37°E
Eastern Atlantic: Mediterranean and Morocco to Angola.
اندازه / وزن / سن
بلوغ: Lm ? range ? - ? cm
Max length : 160 cm TL جنس نر / بدون خواص جنسي; (Ref. 247); common length : 120 cm TL جنس نر / بدون خواص جنسي; (Ref. )
توصيف مختصر
كليدهاي شناسايي | ريخت شناسي | ريخت ستجي بوسيله انداره گيري
خارهاي باله پشتي (کل) : 0. An angelshark with large thorns on snout and above eyes but not on midback, weakly bifurcated nasal barbels and weakly fringed anterior nasal flaps, the first dorsal-fin origin usually well behind the rear tips of pelvic fin, and prominent white spots on body (Ref. 247)
Body shape (shape guide): other; Cross section: flattened.
Found on sand and mud bottom (Ref. 26999) of continental shelves and upper slopes (Ref. 247). Mostly between 50 and 100 m but deeper in the tropics (Ref. 247). Feeds on small fishes (Ref. 247). Ovoviviparous (Ref. 50449). Utilized fresh and dried salted for human consumption; liver oil and hide also used (Ref. 247).
چرخه زندگی و رفتار جفتگیری
بلوغ | تولید مثل | تخم ریزی | تخم ها | باروری | توزاد ( لارو)
Ovoviviparous, embryos feed solely on yolk (Ref. 50449). Size at birth about 24 to 27 cm TL (Ref. 247).
Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO. (Ref. 247)
وضعيت در فهرست قرمز IUCN (Ref. 130435: Version 2025-2 (Global))
خطر برای انسان ها
Traumatogenic
استفاده انسانی
ماهي گيري – شيلات: ارزش تحاري اندك
ابزارها
گزارش های ويژه
بارگيری XML
منابع اينترنتي
تخمینها بر اساس مدلها
دمای ترجیحی (مرجع
123201): 13 - 19.3, mean 15.3 °C (based on 133 cells).
شاخص تنوع فیلوژنتیکی (مرجع
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00550 (0.00300 - 0.01006), b=3.06 (2.90 - 3.22), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
سطح تروفیک (مرجع
69278): 4.0 ±0.5 se; based on diet studies.
جهندگی (مرجع
120179): پايين ، كم, كمينه زمان لازم براي دو برابر شدن جمعيت 5/4 – 14 سال (Fec assumed to be <100).
آسیبپذیری ماهیگیری (Ref.
59153): Very high vulnerability (90 of 100).
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مواد مغذی (Ref.
124155): Calcium = 16.4 [3.7, 79.5] mg/100g; Iron = 0.706 [0.185, 2.111] mg/100g; Protein = 19.2 [17.1, 21.1] %; Omega3 = 0.237 [0.112, 0.507] g/100g; Selenium = 36 [11, 102] μg/100g; VitaminA = 9.75 [3.35, 29.81] μg/100g; Zinc = 0.442 [0.216, 0.817] mg/100g (wet weight);
