分類 / Names
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Cypriniformes (Carps) >
Leuciscidae (Minnows) > Laviniinae
Etymology: Ptychocheilus: Greek, ptyx, ptychos = fold + Greek, cheilos = lip (Ref. 45335); oregonensis: oregonensis meaning - of Oregon (Ref. 1998).
More on author: Richardson.
Environment: milieu / climate zone / depth range / distribution range
生態学
; 新鮮な水 底生の漂泳性. Temperate; 55°N - 39°N
North America: Pacific drainages from Nass River in British Columbia, Canada to Columbia River in Nevada, USA; Harney River basin in Oregon, USA; Peace River system (Arctic basin) in British Columbia and Alberta, Canada.
サイズ / 重さ / 年齢
Maturity: Lm ? range ? - ? cm
Max length : 63.0 cm TL オス/雌雄の選別がない; (Ref. 5723); common length : 22.0 cm TL オス/雌雄の選別がない; (Ref. 12193); 最大公表体重: 13.0 kg (Ref. 1998); 最大記録サイズ: 11 年 (Ref. 72462)
背鰭 (合計): 9-10; 臀鰭: 8 - 9; 脊つい: 44 - 46. Mot deep bodied, greatest depth 16.6% (TL), belly gently rounded in mature individuals. Head moderately long, its length 22.8% (TL); eye small in adults, 17.6% of head length, but larger in young 7.6 cm long, when 25.2% of head length; snout long, 33.1% of head length of adults; interorbital width 29.6% of head length; mouth large, extending back to below anterior margin of eye. All fins clear. Pelvic axillary process usually a ridge. Peritoneum present. Nuptial tubercles fine, on head and back, on pectoral and pelvic fins and sometimes on the caudal fin. Dark green or green-brown dorsally becoming silvery white or cream ventrally. The lower fins of the males become yellow or yellow-orange during spawning period (Ref. 1998). Dorsal fin usually with 9 rays; anal fin with 8 rays; 48-72, usually 51-62, scales on back from head to dorsal fin; 64-79, usually 66-75, scales on lateral line; and 12-20 scales above lateral line (Ref. 86798).
Found in lakes, pools and occasionally in runs of small to large rivers. Large individuals occur in deep water (Ref. 5723, 86798). Feeds on fishes, terrestrial insects, plankton, aquatic insect larvae, and crustaceans while inshore; feeds mostly on fishes while offshore (Ref. 1998). Male squawfish, prickly sculpins, and newts prey on the eggs (Ref. 1998). Edible but not well appreciated (1998).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
A female is surrounded by males close to the bottom; eggs and sperm are released at the same time and eggs settle in the gravel.
Page, L.M. and B.M. Burr, 2011. A field guide to freshwater fishes of North America north of Mexico. Boston : Houghton Mifflin Harcourt, 663p. (Ref. 86798)
Human uses
ゲームフィッシュ: はい; 水族館・水槽: 公共の水族館
より多くの情報
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 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01072 (0.00429 - 0.02678), b=3.02 (2.80 - 3.24), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
栄養段階 (Ref.
69278): 4.2 ±0.4 se; based on diet studies.
Generation time: 13.6 ( na - na) years. Estimated as median ln(3)/K based on 2
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=0.08-0.21).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (50 of 100).
