分類 / Names
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); vitulus: Latin for calf or bullock, i.e., a small cowshark, smaller than its fellow Atlantic congener, H. griseus. (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
生態学
海 深海魚; 深さの範囲 0 - 700 m (Ref. 125614). Tropical; 46°N - 6°N, 98°W - 28°E
Atlantic Ocean: Gulf of Mexico, the Caribbean to Venezuela and Guyanas; Bay of Biscay, from France to Morocco and the Mediterranean.
Length at first maturity / サイズ / 重さ / 年齢
Maturity: Lm 160.0, range 142 - 178 cm
Max length : 230 cm TL オス/雌雄の選別がない; (Ref. 124786); 178.0 cm TL (female); common length : 120 cm TL オス/雌雄の選別がない; (Ref. 5217)
Found on continental and insular slopes. Feeds mainly on bony fishes and cephalopods, sometimes on crustaceans Viviparous, with 13 to 26 young in a litter. Size at birth measures to about 40-45 cm TL (Ref. 125614). It was reported that there is likely some stratification of the distribution by size, presumably with larger individuals present in deeper waters (mostly adult captured in the Bahamas at an average depth of 639.5 m) than the juveniles (< 350 m in Belize and northern Gulf of Mexico). Resource and habitat partitioning between juvenile and much larger adult bluntnose sixgill sharks has been suggested as predation avoidance (Ref. 117400).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Viviparous, with number of young 13 in one litter. Length at birth about 40 to 45 cm.
Daly-Engel, T.S., I.E. Baremore, R.D. Grubbs, S.J.B. Gulak, R.T. Graham and M.P. Enzenauer, 2018. Resurrection of the sixgill shark Hexanchus vitulus Springer & Waller, 1969 (Hexanchiformes, Hexanchidae), with comments on its distribution in the northwest Atlantic Ocean. Marine Biodiversity: [1-10]. (Ref. 117400)
Human uses
より多くの情報
Age/Size
成長
体長-重さ
Length-length
体長組成
形態計測学
形態学
幼生
幼生の動力
補充
豊度
BRUVS
参考文献水産養殖水産養殖の紹介緊張遺伝子のElectrophoreses遺伝病気行列NutrientsMass conversion
協力者画像Stamps, Coins Misc.音シガテラ（食中毒の名前）速度泳ぐ 型式カマOtoliths脳視覚
用具
特記事項
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インターネットの情報源
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00240 (0.00102 - 0.00563), b=3.14 (2.93 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
栄養段階 (Ref.
69278): 4.3 ±0.5 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 手段, １．４年～４．４年の倍増期間の最小個体群 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).
