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Carcharhinus falciformis (Bibron, 1839)

Silky shark
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Carcharhinus falciformis   AquaMaps   Data sources: GBIF OBIS
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Image of Carcharhinus falciformis (Silky shark)
Carcharhinus falciformis
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Cuba country information

Common names: Cazon de playa, Jaquetón, Reef shark
Occurrence: native
Salinity: marine
Abundance: scarce (very unlikely) | Ref: Claro, R., 1994
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Type locality, Cuba, MNHN 1134 (holotype of Carcharias (Prionodon) falciformis, 52.8 cm TL, female embryo) (Ref. 47737). Generally of no interest to fisheries. Also Ref. 244, 26340.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/cu.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Claro, R. and L.R. Parenti, 2001
National Database:

Common names from other countries

Classification / Names आम नाम | उपशब्द | Catalog of Fishes(वर्ग, प्रजाति) | ITIS | CoL | WoRMS | Cloffa

इलाज़मौबरांकी (शारक और रेज़) (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);  falciformis: falx (L.), scythe or sickle; forma (L.), shape or form, referring to sickle-like shape of pectoral fins [authorship often attributed to Müller & Henle, who published Bibron’s description]. (See ETYFish).

Environment: milieu / climate zone / depth range / distribution range पारिस्थितिकी

समुद्री प्रवाल-भित्ति संयुक्त; औशिनोड़िरोमस (Ref. 51243); गहराई सीमा 0 - 4000 m (Ref. 55180), usually 0 - 500 m (Ref. 6871).   Subtropical; 42°N - 43°S, 180°W - 180°E (Ref. 55180)

वितरण देश | ऐफ ऐ ओ क्षेत्र | Ecosystems | संयोग | Point map | भूमिका | Faunafri

Circumtropical. Western Atlantic: Massachusetts, USA to southern Brazil, including the Gulf of Mexico and the Caribbean Sea to Uruguay (Ref. 244, 58839). Eastern Atlantic: Spain, Madeira to northern Angola; St. Paul's Rocks (Ref. 13121); Cape Verde (Ref. 34514). Indo-Pacific: scattered records from the Red Sea and Natal, South Africa (Ref. 5578) to China, New Zealand, and the Caroline, Hawaiian, Phoenix and Line islands. Eastern Pacific: southern Baja California, Mexico to northern Chile. Highly migratory species.

Length at first maturity / आकार / वज़न / Age

Maturity: Lm 219.1, range 180 - 260 cm
Max length : 350 cm TL पुल्लिंग / अलिंग; (Ref. 9997); common length : 250 cm TL पुल्लिंग / अलिंग; (Ref. 9997); अधिकतम प्रकाशित वज़न: 346.0 kg (Ref. 40637); अधिकतम सूचित उम्र: 25 वर्षो (Ref. 31395)

Short description पहचान कुंजी | आकृति विज्ञान | मौरफोमैटरिक्स

पृष्ठीय रीढ़ (सम्पूर्ण) : 0; गुदा कांटा: 0. A large, slim shark with a moderately long, flat and rounded snout, large eyes, small jaws, and oblique-cusped teeth with serrations; 2nd dorsal fin low and with greatly elongated rear tip (Ref. 5578). Grey or bluish-grey above, white below; no conspicuous fin markings (Ref. 5578). Only Carcharhinus species with an interdorsal ridge that has the dorsal fin origin behind the free rear tip of the pectoral fin (Ref. 26938).

जीवविज्ञान     शब्द संग्रह (उदाहरणार्थ epibenthic)

Found abundantly near the edge of continental and insular shelves, but also in the open sea and occasionally inshore (Ref. 244). Often found in deepwater reefs and near insular slopes (Ref. 244). Littoral and epipelagic, in the open sea or near the bottom at 18-500 m (Ref. 58302). It is quick-moving and aggressive (Ref. 244). Solitary (Ref. 26340); often associated with schools of tuna (Ref. 244). Feeds mainly on fishes, but also squid, paper nautiluses, and pelagic crabs (Ref. 244; 37816). Viviparous (Ref. 50449). Regarded as dangerous to humans (Ref. 9997). Flesh utilized fresh and dried-salted for human consumption; its hide for leather; its fin for shark-fin soup; its liver for oil (Ref. 244). 2 to 14 young, 73 to 87 cm, are born per litter (Ref. 1602).

Life cycle and mating behavior Maturities | पुनरुत्पत्ति | Spawnings | Egg(s) | Fecundities | लार्वा

Viviparous, placental (Ref. 50449). 2-15 pups (Ref. 6871, 37816) born at 57-87 cm TL (Ref. 9997); 1-16 pups born at 55-72 cm TL. Females appear to breed every year, but there appears to be no reproductive seasonality (Ref. 58048). Distinct pairing with embrace (Ref. 205).

Main reference Upload your references | संदर्भ | संयोजक : Compagno, Leonard J.V. | सहयोगीयो

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)


CITES (Ref. 128078)


Threat to humans

  Traumatogenic (Ref. 9997)




Human uses

मात्स्यिकी: उच्च वाणिज्य
FAO(मात्स्यिकी: production, species profile; publication : search) | FishSource | Sea Around Us

अधिक जानकारी

Trophic ecology
खाद्य पदार्थ
Diet compositions
Food consumptions
Food rations
परभक्षी
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances
Life cycle
पुनरुत्पत्ति
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
लार्वा
लारवल गतिकी
Anatomy
Gill areas
दिमाग
Otoliths
Physiology
Body compositions
Nutrients
Oxygen consumptions
Swimming type
Swimming speeds
Visual pigment(s)
मत्स्य आवाज़े
Diseases / Parasites
Toxicities (LC50s)
Genetics
आनुवंशिकी
Electrophoreses
Heritabilities
Human related
Aquaculture systems
जलीयकृषि रूपरेखाऐ
खींच
Ciguatera cases
Stamps, coins, misc.
References
संदर्भ

साधन

Special reports

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इंटरनेट स्रोत

Estimates based on models

Preferred temperature (Ref. 115969): 12 - 28.9, mean 26.7 (based on 8170 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00468 (0.00378 - 0.00579), b=3.08 (3.04 - 3.12), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
Trophic level (Ref. 69278):  4.5   ±0.0 se; based on diet studies.
लौटाव (Ref. 120179):  निम्न, न्यूनतम जनसंख्या दुगनी होने का समय 4.5 - 14 वर्ष। (rm=0.054; K=0.05-0.15; tm=6-10; tmax=25; Fec=2-14).
Prior r = 0.06, 95% CL = 0.04 - 0.09, Based on 3 data-limited stock assessments.
Fishing Vulnerability (Ref. 59153):  Very high vulnerability (82 of 100).
Climate Vulnerability (Ref. 125649):  Very high vulnerability (76 of 100).
Price category (Ref. 80766):   High.