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Oncorhynchus kisutch (Walbaum, 1792)

Coho salmon
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Oncorhynchus kisutch   AquaMaps   Data sources: GBIF OBIS
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Image of Oncorhynchus kisutch (Coho salmon)
Oncorhynchus kisutch
Male picture by Keeley, E.R.

分類 / Names 共通名の | 類義語 | Catalog of Fishes(部類, ) | ITIS | CoL | WoRMS | Cloffa

> Salmoniformes (Salmons) > Salmonidae (Salmonids) > Salmoninae
Etymology: Oncorhynchus: Greek, onyx, -ychos = nail + Greek, rhyngchos = snout (Ref. 45335);  kisutch: Most probably a typo in the emendada p720 for kisutch, which is the vernacular name of this fish in Kamtchatka (Ref. 1998).
More on author: Walbaum.

Environment: milieu / climate zone / depth range / distribution range 生態学

; 新鮮な水; 汽水性の; 昇流魚 (Ref. 51243); 深さの範囲 0 - 250 m (Ref. 50550). Subtropical; 0°C - 25°C (Ref. 35682); 72°N - 22°N, 135°E - 111°W (Ref. 117423)

分布 国々 | 国連食糧農業機関の区域 | エコシステム | 事件 | Point map | 導入 | Faunafri

North Pacific: distributed from the Anadyr River in Russia south towards Hokkaido, Japan, and from Point Hope in Alaska southwards to Chamalu Bay in Baja California, Mexico.

サイズ / 重さ / 年齢

Maturity: Lm ?  range ? - ? cm
Max length : 108 cm TL オス/雌雄の選別がない; (Ref. 40637); 65.5 cm (female); common length : 71.0 cm TL オス/雌雄の選別がない; (Ref. 593); common length :59.5 cm (female); 最大公表体重: 15.2 kg (Ref. 40637); 最大記録サイズ: 5 年 (Ref. 36794)

簡単な記述 検索表 | 形態学 | 形態計測学

背面の脊椎 (合計) : 0; 背鰭 (合計) : 9 - 13; 肛門の骨: 0; 臀鰭: 12 - 17; 脊つい: 61 - 69. Characterized by the presence of small black spots on the back and on the upper lobe of the caudal fin, and by the lack of dark pigment along the gum line of the lower jaw (Ref. 27547). The gill rakers are rough and widely spaced; the lateral line is nearly straight (Ref. 27547). The adipose fin is slender; the pelvic fins have an axillary extension (Ref. 27547). Fish in the sea are dark metallic blue or greenish on the back and upper sides, a brilliant silver color on middle and lower sides, and white below; small black spots are present on the back and upper sides and on the upper lobe of the caudal fin (Ref. 27547). During the spawning season fish turn dark to bright green on head and back, bright red on the sides, and often dark on the belly (Ref. 27547). Females are less brightly colored than males (Ref. 27547).

生物学     用語集 (例 epibenthic)

The fish occur in the ocean or in lakes; adults return to the rivers where they were born (Ref. 27547). The young fish emerge in springtime and they usually live in fresh water for 1-2 years (sometimes up to 4 years, Ref. 27547); later they migrate at night to freshwater lakes or to the sea (Ref. 1998). Epipelagic (Ref. 58426). The fish that stay more than two years in fresh water and become sexually ripe without ever going to sea, are called residuals; they never spawn (Ref. 27547). Young fish in lakes and rivers eat mainly insects; they stay almost entirely in deep parts of the river and soon become strongly territorial (Ref. 27547). Upon reaching the sea, the smolts remain close to the coast for a certain time, eating planktonic crustaceans (Ref. 27547). As they grow, they migrate farther out into the sea and hunt larger organisms (Ref. 27547) such as jellyfish, squids and fishes (Ref. 58426). They are hunted by various fishes, birds (mergansers, loons and kingfishers), mammals and lampreys (Ref. 1998). This kind is traded as fresh fish, dried or salted, smoked, canned, preserved and frozen (Ref. 9988). They are steamed, grilled, broiled, cooked in the microwave and baked (Ref. 9988).

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生

Adults migrate from the sea or lake, school at mouths of rivers, and move upstream when rains increase river flow (Ref. 1998). As a rule, the winter entries (December and January) occur in the southern part of the range, with appearance in fresh water becoming progressively earlier to the north (Ref. 30381, 30382, 30383). At the spawning area, the female finds a spot and digs a pitt. At this point she is aggressive toward other females. While digging, an attendant male courts her or is busy driving away other males. As soon as the pitt is completed, the female drops into it and is immediately followed by the male. The pair are side by side, they open their mouth, quiver and release egg and sperm (Ref. 27547). At this point, other males move in and release sperm into the nest (Ref. 1998). The female quickly moves to the upstream edge of the nest and starts digging a new pitt, covering the eggs. The whole process is repeated for several days until the female deposits all her eggs. The male then leaves and may seek another female. The spent female usually continues to dig, until she dies (Ref. 27547). Reproductive strategy: synchronous ovarian organization, determinate fecundity (Ref. 51846).

主な参考文献 Upload your references | 参考文献 | コーディネーター | 協力者

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)

IUCNのレッドリストの状況は (Ref. 130435)


CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless





Human uses

水産業: 高い商業の; 水産養殖: 商業; ゲームフィッシュ: はい
FAO - Aquaculture systems: 代謝, 種の外形; 水産業: landings, 種の外形; Publication: search | FishSource | 私達の周りの海

より多くの情報

Life cycle
繁殖
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
幼生
幼生の動力
Anatomy
Gill areas

Otoliths
Genetics
遺伝子の
Electrophoreses
Heritabilities
Human related
Aquaculture systems
水産養殖の紹介
緊張
Ciguatera cases
Stamps, coins, misc.
Outreach
協力者
References
参考文献

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インターネットの情報源

Estimates based on models

Preferred temperature (Ref. 123201): 1 - 8.9, mean 3.9 °C (based on 453 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01047 (0.00482 - 0.02276), b=3.04 (2.87 - 3.21), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
栄養段階 (Ref. 69278):  4.2   ±0.70 se; based on food items.
回復力 (Ref. 120179):  手段, 1.4年~4.4年の倍増期間の最小個体群 (K=0.98(?); tm=2-4; Fec=1,400).
Prior r = 0.32, 95% CL = 0.21 - 0.48, Based on 2 full stock assessments.
Fishing Vulnerability (Ref. 59153):  Moderate to high vulnerability (52 of 100).
Climate Vulnerability (Ref. 125649):  High to very high vulnerability (72 of 100).
価格帯 (Ref. 80766):   Medium.
Nutrients (Ref. 124155):  Calcium = 31.9 [13.0, 81.4] mg/100g; Iron = 1.24 [0.62, 2.64] mg/100g; Protein = 19.8 [18.6, 20.9] %; Omega3 = 1.13 [0.55, 2.34] g/100g; Selenium = 161 [50, 502] μg/100g; VitaminA = 12 [3, 42] μg/100g; Zinc = 0.543 [0.347, 1.065] mg/100g (wet weight); based on nutrient studies.