ইলাসমোব্রাঙ্কি (হাঙ্গর এবং রে) (sharks and rays) >
Carcharhiniformes (Ground sharks) >
Carcharhinidae (Requiem sharks)
Etymology: Carcharhinus: karcharos (Gr.), sharp or jagged; rhinus, an ancient name for sharks, from rhine (Gr.), rasp, both words alluding to a shark's jagged, rasp-like skin. (See ETYFish); acronotus: acro-, from akron (Gr.), top, summit or peak; notus, from notos (Gr.), back, allusion not explained, perhaps referring to “raised” (translation) back at first dorsal fin. (See ETYFish).
More on author: Poey.
Environment: milieu / climate zone / depth range / distribution range
বাস্তুসংস্থান
সামুদ্রিক রীফ সংশ্লিষ্ট; গভীরতার পরিসীমা 9 - 64 m (Ref. 50072), usually 9 - ? m (Ref. 55176). Subtropical; 40°N - 37°S, 100°W - 33°W (Ref. 55176)
Western Atlantic: North Carolina, USA to southern Brazil and Uruguay (Ref. 58839), including the Gulf of Mexico and the Caribbean.
Length at first maturity / আকৃতি / ওজন / Age
Maturity: Lm 110.7, range 87 - 137 cm
Max length : 200 cm TL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 244); সবের্াচ্চ প্রকাশিত ওজন : 18.9 kg (Ref. 40637); সর্বোচ্চ উলি্ল্লখিত বয়স : 20 বৎসর (Ref. 108669)
Found on continental and insular shelves, mainly over sandy, shell, and coral bottoms. Feeds on small fishes, including pinfish (Sparidae) and porcupine fish. Preyed on by larger sharks. Viviparous (with a yolk-sac placenta), with 3 to 6 young per litter. Performs a 'hunch' display, with back arched, caudal lowered and head raised, as a possible threat display when confronted by divers. Utilized dried salted for human consumption. Minimum depth from Ref. 055176.
Viviparous, placental (Ref. 50449), with 3 to 6 young per litter (Ref. 244). Distinct pairing with embrace (Ref. 205).
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)
IUCN Red List Status (Ref. 130435)
Human uses
মৎস্য: গৌণ বাণিজ্যিক ; শিকারযোগ্য মাছ: হঁ্যা
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ইন্টারনেট সুত্র
Estimates based on models
Preferred temperature (Ref.
123201): 22.2 - 28, mean 25.5 °C (based on 520 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00479 (0.00221 - 0.01036), b=3.09 (2.92 - 3.26), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
ট্রফিক পর্যায়ে (Ref.
69278): 4.4 ±0.5 se; based on diet studies.
স্থিতিস্থাপক (Ref.
120179): নিম্ন/ , সর্বনিম্ন প্রজন দ্বিগুনের সময় ৪.৪-১৪ বৎসর (K=0.12; tm=3; tmax=15; Fec=4).
Prior r = 0.44, 95% CL = 0.29 - 0.66, Based on 1 full stock assessment.
Fishing Vulnerability (Ref.
59153): High vulnerability (60 of 100).
Nutrients (Ref.
124155): Calcium = 4.6 [0.8, 24.8] mg/100g; Iron = 0.382 [0.095, 1.094] mg/100g; Protein = 23 [20, 25] %; Omega3 = 0.156 [0.059, 0.385] g/100g; Selenium = 13.2 [4.0, 40.1] μg/100g; VitaminA = 34.1 [11.8, 102.7] μg/100g; Zinc = 0.367 [0.171, 0.718] mg/100g (wet weight);
