分類 / Names
共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
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Scombriformes (Mackerels) >
Icosteidae (Ragfish)
Etymology: Icosteus: Greek, eikoo = to sag, to bend something that is soft + Greek, osteon = bone.
Environment: milieu / climate zone / depth range / distribution range
生態学
海 深海浮遊性; 深さの範囲 0 - 1420 m (Ref. 50550), usually 18 - 732 m (Ref. 2850). Deep-water; 66°N - 32°N
North Pacific: Japan to southeastern Alaska and to Point Loma, southern California, USA.
サイズ / 重さ / 年齢
Maturity: Lm ? range ? - ? cm
Max length : 213 cm TL オス/雌雄の選別がない; (Ref. 2850)
背面の脊椎 (合計) : 0; 背鰭 (合計) : 52 - 55; 肛門の骨: 0; 臀鰭: 34 - 40. Pectorals rounded, pedunculate (Ref. 6885). Generally of a chocolate color (Ref. 6885). Young more robust, with an expanded and rounded caudal fin, 5 pelvic rays, and a brown and yellow irregularly blotched with faint purple color, dusky on fins (Ref. 6885).
Adults occur near bottom; juveniles in shallow water or offshore near the surface (Ref. 50277). Feeds on jellyfish (Ref. 50277), fishes and squids (Ref. 2850), as well as octopuses (Ref. 4525).
Eschmeyer, W.N., E.S. Herald and H. Hammann, 1983. A field guide to Pacific coast fishes of North America. Boston (MA, USA): Houghton Mifflin Company. xii+336 p. (Ref. 2850)
Human uses
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インターネットの情報源
Estimates based on models
Preferred temperature (Ref.
123201): 2 - 14.1, mean 6.2 °C (based on 1370 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01995 (0.00906 - 0.04395), b=3.01 (2.83 - 3.19), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
栄養段階 (Ref.
69278): 4.5 ±0.57 se; based on food items.
Generation time: 8.5 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
回復力 (Ref.
120179): 低い, ４．５年～１４年の倍増期間の最小個体群 (K=0.13; Fec=293,000).
Fishing Vulnerability (Ref.
59153): High to very high vulnerability (71 of 100).
