Hexanchus griseus (Bonnaterre, 1788)
Bluntnose sixgill 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. |
| Hexanchus griseus AquaMaps Data sources: GBIF OBIS |
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) > Hexanchiformes (Frill and cow sharks) > Hexanchidae (Cow sharks)
Etymology: Hexanchus: hex (Gr.), six; anchus, etymology unclear, perhaps anchos (Gr.), choke or throttle, referring to how six gill openings of H. griseus extend down onto the throat (See ETYFish); griseus: Medieval Latin for gray, reflecting the French vernacular “Le Griset,” referring to its dark-gray coloration (See ETYFish).
More on author: Bonnaterre.
Etymology: Hexanchus: hex (Gr.), six; anchus, etymology unclear, perhaps anchos (Gr.), choke or throttle, referring to how six gill openings of H. griseus extend down onto the throat (See ETYFish); griseus: Medieval Latin for gray, reflecting the French vernacular “Le Griset,” referring to its dark-gray coloration (See ETYFish).
More on author: Bonnaterre.
環境：環境 / 気候帯 / 深さの範囲 / 分布範囲 生態学
海 深海魚; 海洋回遊性 (Ref. 87829); 深さの範囲 0 - 2500 m (Ref. 132203), usually 180 - 1100 m (Ref. 45445). Subtropical; 6°C - 10°C (Ref. 125614); 65°N - 48°S, 180°W - 180°E
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
Circumglobal with patchy distribution and possibly absent from Arctic and Antarctic. Highly migratory species.
初回成熟時の長さ / サイズ / 重さ / 年齢
成熟: Lm 441.0, range 400 - 482 cm
Max length : 600 cm TL オス/雌雄の選別がない; (Ref. 124786); common length : 300 cm TL オス/雌雄の選別がない; (Ref. 5217); 最大公表体重: 590.0 kg (Ref. 27436)
Max length : 600 cm TL オス/雌雄の選別がない; (Ref. 124786); common length : 300 cm TL オス/雌雄の選別がない; (Ref. 5217); 最大公表体重: 590.0 kg (Ref. 27436)
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 heavily-bodied, broad-headed sixgill shark, mouth ventral with 6 rows of lower, bladelike, comb-shaped teeth on each side (Ref. 247). Snout broadly rounded, body fusiform (Ref. 6871). Anal fin smaller than dorsal fin (Ref. 6871). Brown or grey above, paler below, with a light stripe along side (Ref. 26346). Fins with white edges (Ref. 6574). Live specimens with fluorescent green eyes (Ref. 6871). Six gill slits are very long (Ref. 35388).
Body shape (shape guide): elongated.
Body shape (shape guide): elongated.
Depth range reported at 0m-2500m (Ref. 125614). A deepwater species of the outer continental and insular shelves and upper slopes (Ref. 6871, 75154), islands, seamounts and mid-ocean ridges (Ref. 125614). Near bottom, occasionally pelagic, adults usually below 91 m (Ref. 58302). Juveniles may be found close inshore (Ref. 6871), while nursery areas are in very shallow waters (Ref. 125614). Found on the bottom by day, moving to the surface at night to feed, and where it may take longlines set for other species (Ref. 45445). Depth distribution related to growth and temperature, with juveniles having most shallow records and from colder, poleward regions (Ref. 58302). Generally occurs at a bottom temperature of 6 to 10°C (Ref. 125614). Feeds on a wide range of marine organisms, including other sharks, rays, chimaeras, bony fish, squids, crabs, shrimps, carrion, and even seals (Ref. 26969). Large sharks (at least 2m) take cetaceans and seals. Viviparous, very large litters of 47-108 pups (Ref. 125614). Give birth to almost 100 young (Ref. 35388). Young and adults may be segregated, with the young using inshore nursery grounds. Possibly long-lived (Ref. 125614). Is a eurytrophic predator that is capable of exploiting a wide range of prey species and habitats (Ref. 26969). A vertical migrant, it may sit on the bottom by day, and rise to the surface at night to feed (Ref. 247). It occurs alone or in groups. Adults are more sensitive to light than the juveniles and less seen in clear shallow waters, but more prevalent at night or areas with dense plankton blooms (Ref. 125614). It is locally common in bycatch and target fisheries for food, fishmeal and oil, and in sports fisheries, but vulnerable to overfishing and requires careful management (Ref. 125614). Marketed fresh, frozen, or dried salted (Ref. 247). Not known to have attacked people without provocation (Ref. 247).
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, very large litters of 47-108 pups (Ref. 125614). Size at birth 60-75 cm (Ref. 26346). 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
Ebert, D.A., S. Fowler and M. Dando, 2021. Sharks of the world: A complete guide. Princeton (NJ, USA): Princeton University Press, 607 p. (Ref. 125614)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
絶滅危惧に近い (NT) (A2bd); Date assessed: 21 November 2019
CITES
Not Evaluated
人間に対する脅威
Other (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 | FIRMS - Stock assessments | FishSource | 私達の周りの海
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インターネットの情報源
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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 = 0.6641 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.00081 (0.00049 - 0.00134), b=3.23 (3.08 - 3.38), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245). |
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栄養段階 (参照 69278) |
4.5 ±0.2 se; based on diet studies. |
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回復力 (参照 120179) |
低い, ４．５年～１４年の倍増期間の最小個体群 (Fec= 22-108). |
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漁業の脆弱性 (Ref. 59153) |
Very high vulnerability (81 of 100). 🛈 |
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気候脆弱性 (Ref. 125649) |
Moderate vulnerability (38 of 100). 🛈 |
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価格帯 (Ref. 80766) |
Unknown. |
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栄養素 (Ref. 124155) |
Calcium = 8.75 [2.27, 47.99] mg/100g; Iron = 0.664 [0.163, 2.072] mg/100g; Protein = 19.5 [17.5, 21.5] %; Omega3 = 0.24 [0.10, 0.59] g/100g; Selenium = 79.6 [24.5, 261.1] μg/100g; VitaminA = 3.68 [0.99, 13.90] μg/100g; Zinc = 0.324 [0.155, 0.615] mg/100g (wet weight); |