Common names from other countries
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); cerdale: From kerdaleos (Gr.), wary, crafty or fox-like, allusion not explained (but see entries for C. cautus, above, and Alopias, Alopiidae). (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
বাস্তুসংস্থান
সামুদ্রিক তলদেশ বিহারী; গভীরতার পরিসীমা 0 - 40 m (Ref. 106604). Tropical
Eastern Pacific Ocean: from the Gulf of California to Peru.
আকৃতি / ওজন / Age
Maturity: Lm ? range ? - ? cm
Max length : 140 cm TL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 86285)
This smooth-backed species is distinguished by the following: some specimens have a very weak interdorsal ridge (evident in embryos and neonates; not noticeable in the holotype or on a 103.4-cm male individual); first dorsal fin originates about the middle of the pectoral fin inner margin; its anterior margin is much longer than the distance from the apex to the free rear tip; height of first dorsal fin is about 9-10.5% of TL; second dorsal fin originates over or behind middle of anal base; caudal fin measures about one-fourth of the total length; has minute, inconspicuous hyomandibular pores behind the eye; upper teeth, from the first to the fifth tooth have broadly triangular, increasingly oblique cusps with serrated edges, with a notch on both edges at about a third of length from the base to the cusp (serrations from the notch to the base are much larger than those on the rest of the cusp); lower teeth have narrow, erect to slightly oblique, triangular cusps with more finely serrated edges; teeth number U:13 to 15-1 or 2-13 to 15, L:12 to 15-0 to 2-12 to 15; denticles roughly oblong and have minimal overlapping, with three central ridges, the central ridge being only slightly longer than the side ridges and terminating in a slightly longer point. Colour in preserved specimens: the first and second dorsal fins, the pelvic fins and the anal fin had dark or dusky edges, and the pectoral fins usually had dusky or black tips on their dorsal sides, and the lower caudal lobe was dusky or blacktipped; neonates have caudal fins with a black border, and their pectoral fins have a wide, white rear margin (Ref. 86285).
Life cycle and mating behavior
পরিপক্কতা | প্রজনন | ডিম ছাড়া | ডিমসমূহ | ডিম্বধারন ক্ষমতা | শুককীট
Castro, J.I., 2011. Resurrection of the name Carcharhinus cerdale, a species different from Carcharhinus porosus. aqua, International Journal 17(1):1-10. (Ref. 86285)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
আরো তথ্য
সূত্র সংখ্যা এ্যাকুয়াকালচার (জলজ পালন) এ্যাকুয়াকালচার নকশা বংশ বংশানুগতিবিদ্যাElectrophoresesউতরাধিকার সুত্রে পাওয়া যোগ্যতারোগ প্রক্রিয়াজাতকরণ Mass conversion
সহযোগী ছবি সমূহStamps, Coins Misc.শব্দ ক্রোমোজোমের ধরণ গতি সাতাঁরের কায়দা ফুলকা এলাকাOtolithsমস্তিস্ক সমূহদৃষ্টি
হাতিয়ার
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ইন্টারনেট সুত্র
Estimates based on models
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): 4.1 ±0.6 se; based on size and trophs of closest relatives
স্থিতিস্থাপক (Ref.
120179): নিম্ন/ , সর্বনিম্ন প্রজন দ্বিগুনের সময় ৪.৪-১৪ বৎসর (Preliminary low fecundity).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (84 of 100).
