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Carcharhiniformes (Ground sharks) >
Carcharhinidae (Requiem sharks)
Etymology: Rhizoprionodon: rhiza (Gr.), root; prion (Gr.) saw; odon (Gr.), tooth, referring to teeth with serrated (saw-like) bases, or roots [replacement name for Rhizoprion Ogilby 1915, preoccupied by Rhizoprion Jourdan 1861 in mammals] (See ETYFish); porosus: Latin for pored or full of holes, referring to enlarged hyomandibular pores on both sides of head (See ETYFish).
More on author: Poey.
البيئة: الوسط / المنطقة المناخية / نطاق العمق / نطاق التوزيع
البيئة
بحري; المياه العذبة; مياه مخلوطة مرتبطة بالشعاب; نطاق العمق ? - 500 m (Ref. 244), usually ? - 100 m (Ref. 244). Tropical; 28°N - 40°S, 88°W - 32°W (Ref. 55194)
Western Atlantic: Caribbean, including the Bahamas, south to Uruguay. The separation of this species from Rhizoprionodon terraenovae whether as a distinct species or a representative of a southern subspecies is still uncertain and pending until detailed studies are commenced.
الطول عند النضج الأول / الحجم / وزن / العمر
النضج: Lm 65.0, range 80 - ? cm
Max length : 113 cm TL ذكر/ مختلط الجنس; (Ref. 111958); common length : 75.0 cm TL ذكر/ مختلط الجنس; (Ref. 5217); أعلا وزن تم نشرة: 7.5 kg (Ref. 111958)
Common in bays and estuaries often entering rivers. Also found in offshore waters at depths of about 500 m, generally less than 100 m. Feeds mainly on small bony fishes, including wrasses, but also marine snails, squid and shrimp. Viviparous, with 2 to 6 young in a litter. Size at birth about 31 to 39 cm. Utilized salted or frozen for human consumption and processed into fish meal. Not dangerous (Ref. 9710).
Distinct pairing with embrace (Ref. 205). Viviparous, placental (Ref. 50449).
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)
حالة القائمة الحمراء للاتحاد الدولي لحفظ الطبيعة والموارد الطبيعية (Ref. 130435: Version 2025-2 (Global))
استخدامات بشرية
مصائد: تجاري
أدوات
تقارير خاصة
تنزيل XML
مصادر علي الأنترنت
تقديرات تستند إلى النماذج
درجة الحرارة المفضلة (مرجع
123201): 17.5 - 27.1, mean 24.2 °C (based on 80 cells).
مؤشر التنوع الشُعبي الوراثي (مرجع
82804): PD
50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00219 (0.00145 - 0.00330), b=3.08 (2.96 - 3.20), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
مستوى غذائي (مرجع
69278): 4.0 ±0.2 se; based on diet studies.
Generation time: 3.7 ( na - na) years. Estimated as median ln(3)/K based on 2
growth studies.
المرونه (مرجع
120179): منخفظ جدا, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع أكثر من 14 سنة (Fec=2; K=0.3-0.42).
ضعف الصيد (Ref.
59153): Moderate to high vulnerability (51 of 100).
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المغذيات (Ref.
124155): Calcium = 8.95 [1.65, 47.15] mg/100g; Iron = 0.433 [0.104, 1.231] mg/100g; Protein = 22.2 [19.3, 24.6] %; Omega3 = 0.143 [0.058, 0.338] g/100g; Selenium = 38 [11, 110] μg/100g; VitaminA = 58.9 [20.5, 179.1] μg/100g; Zinc = 0.758 [0.366, 1.514] mg/100g (wet weight);
