Carcharhinus obscurus (Lesueur, 1818)
Dusky shark
個人による観察記録の追加 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 obscurus AquaMaps Data sources: GBIF OBIS |
アップロード 写真 そして ビデオ
画像 | ビデオ | 切手、コイン、その他 | グーグルの画像
Carcharhinus obscurus
画像によって Blue Abacus
画像 | ビデオ | 切手、コイン、その他 | グーグルの画像
画像によって Blue Abacus
分類 / 名前 共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
板鰓亜鋼(サメとエイ類) (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); obscurus: Latin for dark, probably referring to its darkish blue-gray body color (See ETYFish).
More on author: Lesueur.
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); obscurus: Latin for dark, probably referring to its darkish blue-gray body color (See ETYFish).
More on author: Lesueur.
環境：環境 / 気候帯 / 深さの範囲 / 分布範囲 生態学
海; 汽水性の 関連する礁; 海洋回遊性 (Ref. 51243); 深さの範囲 0 - 400 m (Ref. 244), usually 200 - 400 m. Subtropical; 45°N - 46°S, 120°W - 156°E (Ref. 55186)
分布 領土 | 国連食糧農業機関の区域 | エコシステム | 事件 | 目的のマップ | 導入 | Faunafri
Western Atlantic: southern Massachusetts to Florida (USA), Georges Bank, Bahamas, Cuba, northern Gulf of Mexico, Nicaragua, southern Brazil and Uruguay (Ref. 58839). Eastern Atlantic: Canary Islands, Cape Verde, Senegal, Sierra Leone. Some records from the Mediterranean and Madeira may be based on Carcharhinus galapagensis. Indo-West Pacific: Red Sea (Ref. 5485), Mozambique and South Africa to Japan, China, Viet Nam and Australia. Eastern Pacific: southern California, USA to Gulf of California and the Revillagigedo Island. Highly migratory species.
初回成熟時の長さ / サイズ / 重さ / 年齢
成熟: Lm 249.5, range 220 - 300 cm
Max length : 420 cm TL オス/雌雄の選別がない; (Ref. 5578); common length : 250 cm TL オス/雌雄の選別がない; (Ref. 26999); 最大公表体重: 346.5 kg (Ref. 4699); 最大記録サイズ: 40 年 (Ref. 31395)
Max length : 420 cm TL オス/雌雄の選別がない; (Ref. 5578); common length : 250 cm TL オス/雌雄の選別がない; (Ref. 26999); 最大公表体重: 346.5 kg (Ref. 4699); 最大記録サイズ: 40 年 (Ref. 31395)
簡単な記述 検索表 | 形態学 | 形態計測学
背面の脊椎 (合計) : 0; 肛門の骨: 0. A large shark with a broadly rounded snout, triangular saw-edged upper teeth, curved moderate-sized pectoral fins, and an interdorsal ridge (Ref. 5578). Blue-grey, lead-grey above, white below; tips of pectoral and pelvic fins, as well as lower lobe of caudal fin and dorsal fins often dusky in young, plain in adults (Ref. 9997).
Body shape (shape guide): fusiform / normal.
Body shape (shape guide): fusiform / normal.
Found in coastal and offshore waters but not oceanic (Ref. 5578). Adults are commonly found at depths of 200-400 m, young in shallower waters (Ref. 5485). A highly and seasonal migratory species over parts of its range (Ref. 6871). Common component of the catch of the shark longline fishery (Ref.58048). Feeds on bottom and pelagic bony fish, sharks, skates, rays, cephalopods, gastropods, crustaceans, sometimes mammalian carrion and inorganic objects (Ref. 5578). Viviparous (Ref. 50449); with litter size number from 3-14 (Ref. 27549). Large adults are potentially dangerous (Ref. 4716, 6871). Utilized fresh, dried-salted, frozen and smoked for human consumption; hides for leather; fins for sharks-fin soup; and liver oil extracted for vitamins (Ref. 244).
ライフサイクルと交尾行動 成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Viviparous, with a yolk-sac placenta, litter size 3-14 pups (Ref. 244); 70-100 cm at birth (Ref. 6871). Gestation period of ~ 16 months (Ref.58048). Distinct pairing with embrace (Ref. 205).
主な参考文献
参考文献のアップロード | 参考文献 | コーディネーター : Compagno, Leonard J.V. | 協力者
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のレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
絶滅危惧 (EN) (A2bd); Date assessed: 06 November 2018
人間に対する脅威
Traumatogenic (Ref. 4690)
人間の用途
水産業: 商業; ゲームフィッシュ: はい
FAO - 水産業: 種の外形, landings search; Publication: search | FishSource | 私達の周りの海
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インターネットの情報源
AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: 部類, 種 | DiscoverLife | ECOTOX | FAO - 水産業: 種の外形, landings search; Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | GoMexSI (interaction data) | Google Books | Google Scholar | Google | IGFA World Record | 国のデーターベース | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | 生命の木 | Wikipedia: 行く, 検索する | World Records Freshwater Fishing | 動物に関する記録
モデルに基づく推定値
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系統多様性指数 (参照 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.00794 (0.00456 - 0.01384), b=3.07 (2.93 - 3.21), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245). |
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栄養段階 (参照 69278) |
4.3 ±0.2 se; based on diet studies. |
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回復力 (参照 120179) |
非常に低い, １４年以上の倍増期間の最小個体群 (rm=0.02; also Musick et al. 2000 (Ref. 36717)). |
| Rate of population increase | Prior r = 0.09, 95% CL = 0.06 - 0.13, Based on 1 data-limited stock assessment. |
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漁業の脆弱性 (Ref. 59153) |
Very high vulnerability (88 of 100). 🛈 |
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気候脆弱性 (Ref. 125649) |
High vulnerability (62 of 100). 🛈 |
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価格帯 (Ref. 80766) |
Medium. |
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栄養素 (Ref. 124155) |
Calcium = 2.25 [0.42, 12.59] mg/100g; Iron = 0.295 [0.071, 0.898] mg/100g; Protein = 23 [20, 25] %; Omega3 = 0.163 [0.056, 0.425] g/100g; Selenium = 21.7 [6.3, 69.9] μg/100g; VitaminA = 24.1 [6.3, 93.0] μg/100g; Zinc = 0.398 [0.189, 0.797] mg/100g (wet weight); |