(كوسه ها و سپرماهيان) (sharks and rays) >
Carcharhiniformes (Ground sharks) >
Pentanchidae (Deepwater catsharks)
Etymology: Apristurus: a-, Latin privative, i.e., without; pristis, from pristes (Gr.), sawyer (but here meaning saw); oura (Gr.), tail, referring to absence of saw-toothed crest of enlarged dermal denticles along upper edge of caudal fin as found in the closely related Pristiurus (=Galeus) (See ETYFish); riveri: In honor of biologist-anthropologist Luis Hugo Howell-Rivero (1899-1986), for his contributions to Cuban ichthyology (this shark described from the north coast of Cuba) (See ETYFish).
Eponymy: Dr Luis Hugo Howell-Rivero (1899–1986) was a Cuban biologist and anthropologist at the University of Havana. [...] (Ref. 128868), visit book page.
محیط زیست: محیط زیست / منطقه آب و هوایی / تغييرات عمق / محدوده توزیع
بوم شناسي
دريايي موجوداتی که در اعماق زیر 200 متر زندگی و تغذیه می کنند; تغييرات عمق 700 - 1500 m (Ref. 55584). Deep-water; 30°N - 9°N
Western Central Atlantic: Cuba, northern Gulf of Mexico, and Panama.
اندازه / وزن / سن
بلوغ: Lm ? range ? - ? cm
Max length : 46.0 cm TL جنس نر / بدون خواص جنسي; (Ref. 244); 41.0 cm TL (female)
Relatively slender, moderately long, narrow snout and relatively narrow, low caudal fin. Color uniform dark brown (Ref. 37039). First to third gill openings long as the distance between the nostrils (Ref. 6032).
Body shape (shape guide): elongated.
Found on the continental slopes. Oviparous, with one egg per oviduct laid at a time. Sexual dimorphism in adults unusually well-developed.
چرخه زندگی و رفتار جفتگیری
بلوغ | تولید مثل | تخم ریزی | تخم ها | باروری | توزاد ( لارو)
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Sexual dimorphism is evident in dentition of males (Ref. 49562). Males have longer teeth with fewer cusps (Ref. 51093) to make 'courtship biting' more effective (Ref. 49562).
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 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244)
وضعيت در فهرست قرمز IUCN (Ref. 130435: Version 2025-2 (Global))
خطر برای انسان ها
Harmless
استفاده انسانی
ماهي گيري – شيلات: از بی علاقه گی
ابزارها
گزارش های ويژه
بارگيری XML
منابع اينترنتي
تخمینها بر اساس مدلها
دمای ترجیحی (مرجع
123201): 4.9 - 7.9, mean 5.7 °C (based on 95 cells).
شاخص تنوع فیلوژنتیکی (مرجع
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00347 (0.00172 - 0.00698), b=3.08 (2.90 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
سطح تروفیک (مرجع
69278): 3.9 ±0.6 se; based on size and trophs of closest relatives
جهندگی (مرجع
120179): خیلی آهسته, كمينه زمان لازم براي دو برابر شدن جمعيت بيش از 14 سال (Fec assumed to be <10).
آسیبپذیری ماهیگیری (Ref.
59153): Moderate vulnerability (36 of 100).
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مواد مغذی (Ref.
124155): Calcium = 10.1 [1.8, 65.5] mg/100g; Iron = 0.358 [0.076, 1.226] mg/100g; Protein = 16.8 [13.6, 19.9] %; Omega3 = 0.225 [0.092, 0.549] g/100g; Selenium = 12.9 [4.1, 41.1] μg/100g; VitaminA = 19.1 [4.1, 92.2] μg/100g; Zinc = 0.379 [0.184, 0.754] mg/100g (wet weight);
