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Carcharhinus falciformis (Bibron, 1839)
Silky shark
إضافة ملاحظاتك Fish Watcher
| Native range | All suitable habitat | Point map | Year 2050 |
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| This map was computer-generated and has not yet been reviewed. |
| Carcharhinus falciformis AquaMaps Data sources: GBIF OBIS |
ارفع صور و مقاطع فيديو
Pictures | Videos | صور قوقل
Carcharhinus falciformis
Picture by Furlan, B.
Pictures | Videos | صور قوقل
Picture by Furlan, B.
التصنيف / Names الأسماء الشائعة | مرادفات | Catalog of Fishes(جنس, الانواع) | ITIS | CoL | WoRMS | Cloffa
أشلاق (القروش و الشفانين) (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).
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 البيئة
بحري مرتبطة بالشعاب; محيطية (Ref. 51243); نطاق العمق 0 - 4000 m (Ref. 55180), usually 0 - 500 m (Ref. 6871). Subtropical; 42°N - 43°S, 180°W - 180°E (Ref. 55180)
التوزيع دول | مناطق الفاو | النظام البيئي | الظهور | Point map | مقدمة | 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 / الحجم / وزن / العمر
Maturity: Lm 219.1, range 180 - 260 cm
Max length : 350 cm TL ذكر/ مختلط الجنس; (Ref. 9997); common length : 250 cm TL ذكر/ مختلط الجنس; (Ref. 9997); أعلا وزن تم نشرة: 346.0 kg (Ref. 40637); العمر: 25 سنين (Ref. 31395)
Max length : 350 cm TL ذكر/ مختلط الجنس; (Ref. 9997); common length : 250 cm TL ذكر/ مختلط الجنس; (Ref. 9997); أعلا وزن تم نشرة: 346.0 kg (Ref. 40637); العمر: 25 سنين (Ref. 31395)
وصف مختصر مفاتيح التعريف | الوصف الخارجي | قياسات المظهر الخارجي
الأشواك الظهرية (المجموع) : 0; شوكة شرجية: 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).
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 النضج | التكاثر | وضع البيض | بيض | الخصوبة | Larvae
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).
المرجع الرئيسي
Upload your references | مراجع | المنظم : Compagno, Leonard J.V. | المتعاونين
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: Version 2024-2)
معرضة للخطر, انظر القائمة الحمراء للأتحاد الدولي للمحميات الطبيعية (VU) (A2bd); Date assessed: 26 September 2017
خطر للأنسان
Traumatogenic (Ref. 9997)
استخدامات بشرية
مصائد: ذو قيمة تاجرية عالية
FAO - مصائد: landings, ملف الأنواع; Publication: search | FishSource | البحر حولنا
مزيد من المعلومات
Population dynamics
معاملات النمو
Max. ages / sizes
Length-weight rel.
Length-length rel.
الطول- الترددات
Mass conversion
توظيف
الوفرة
معاملات النمو
Max. ages / sizes
Length-weight rel.
Length-length rel.
الطول- الترددات
Mass conversion
توظيف
الوفرة
Physiology
Body composition
Nutrients
استهلاك الأوكسجين
نوع السباحة
سرعة السباحة
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Body composition
Nutrients
استهلاك الأوكسجين
نوع السباحة
سرعة السباحة
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Genetics
جيني
Heterozygosity
التوريث
جيني
Heterozygosity
التوريث
Human related
Aquaculture systems
ملامح تربية الأحياء المائية
سلالات
Ciguatera cases
Stamps, coins, misc.
Aquaculture systems
ملامح تربية الأحياء المائية
سلالات
Ciguatera cases
Stamps, coins, misc.
أدوات
Bio-Quiz | E-book | دليل الميدان | مفاتيح التعريف | Length-frequency wizard | أداة تاريخ الحياة | نقطة علي الخريطة | Classification Tree
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تقارير خاصة
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مصادر علي الأنترنت
AFORO (otoliths) | Alien/Invasive Species database | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | البحث في مراقبي الأسماك | CISTI | Catalog of Fishes: جنس, الانواع | DiscoverLife | ECOTOX | FAO - مصائد: landings, ملف الأنواع; Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: الوراثة, نيوكلوتيدة | GloBI | GoMexSI (interaction data) | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | قاعدة البينات الوطنية | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | شجرة الحياة | Wikipedia: ذهب, بحث | World Records Freshwater Fishing | سجلات علم الحيوانات
Estimates based on models
Preferred temperature (Ref. 123201): 12 - 28.9, mean 26.7 °C (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=0.00501 (0.00408 - 0.00616), b=3.07 (3.03 - 3.11), in cm total length, based on LWR estimates for this species (Ref. 93245).
مستوى غذائي (Ref. 69278): 4.5 ±0.0 se; based on diet studies.
Generation time: 9.2 (7.4 - 13.1) years. Estimated as median ln(3)/K based on 14 growth studies.
المرونه (Ref. 120179): منخفض, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع 4.5-14 سنة (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).
Nutrients (Ref. 124155): Calcium = 2.41 [0.46, 12.84] mg/100g; Iron = 0.321 [0.080, 0.980] mg/100g; Protein = 22.8 [19.9, 25.0] %; Omega3 = 0.211 [0.078, 0.542] g/100g; Selenium = 34.5 [10.6, 105.0] μg/100g; VitaminA = 23 [7, 76] μg/100g; Zinc = 0.281 [0.138, 0.566] mg/100g (wet weight);