分類 / Names
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Perciformes/Cottoidei (Sculpins) >
Agonidae (Poachers) > Brachyopsinae
Eponymy: Cygnus G Chesnon (dates unknown) published a rare book on the natural history of Normandy, France (1835), in which he proposed the name Occa (now = Somateria) for a genus of eider ducks. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
生態学
海 底生の; 深さの範囲 18 - 425 m (Ref. 6793). Temperate
Northeast Pacific: Bristol Bay, Alaska to Unimak Island in the Aleutian chain and Point Montara, California, USA (Ref. 6793); extended to southeastern Bering Sea (Ref. 51659).
サイズ / 重さ / 年齢
Maturity: Lm ? range ? - ? cm
Max length : 20.0 cm TL オス/雌雄の選別がない; (Ref. 2850)
背面の脊椎 (合計) : 8 - 9; 背鰭 (合計) : 6 - 9; 肛門の骨: 0; 臀鰭: 10 - 12; 脊つい: 35 - 37. Dorsal fins touching or nearly so; caudal rounded; anal long based and rather low; pectorals broad, lower 4 to 6 rays thickened and not joined by membrane as far as their ends; pelvic fins reduced (in males, long pelvic fins reaching as far as the origin of the anal fin) (Ref. 6885). Dark gray or brown on upper surface, paler beneath, the line of demarcation very clear on head; some individuals with 6 or more dark saddle-shaped markings over back and extending on sides; dorsal fins with dark bands following free margins on fins; longitudinal dark coloring follows rays of caudal fin, especially at distal ends; rows of dark spots on rays of pectorals, and a bright orange spot in its center; dark spots on eyeballs more abundant on upper part (Ref. 6885).
Found on soft bottoms (Ref. 2850).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
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)
IUCNのレッドリストの状況は (Ref. 130435: Version 2024-2)
Human uses
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
Preferred temperature (Ref.
123201): 2.9 - 8.6, mean 5.3 °C (based on 283 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
栄養段階 (Ref.
69278): 3.2 ±0.3 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): Low vulnerability (10 of 100).
