Thaleichthys pacificus (Richardson, 1836)
Eulachon
個人による観察記録の追加 Fish Watcher
| Native range | All suitable habitat | Point map | Year 2050 |
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| This map was computer-generated and has not yet been reviewed. |
| Thaleichthys pacificus AquaMaps Data sources: GBIF OBIS |
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画像 | グーグルの画像
Thaleichthys pacificus
画像によって Bull. U.S. Bur. Fish.
画像 | グーグルの画像
画像によって Bull. U.S. Bur. Fish.
分類 / 名前 共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
> Osmeriformes (Freshwater smelts) > Osmeridae (Smelts)
Etymology: Thaleichthys: Greek, thaleia, -as = abundance + Greek, ichthys = fish (Ref. 45335); pacificus: pacificus - of the Pacific (Ref. 1998).
More on author: Richardson.
Etymology: Thaleichthys: Greek, thaleia, -as = abundance + Greek, ichthys = fish (Ref. 45335); pacificus: pacificus - of the Pacific (Ref. 1998).
More on author: Richardson.
環境：環境 / 気候帯 / 深さの範囲 / 分布範囲 生態学
海; 新鮮な水; 汽水性の pelagic-neritic; 昇流魚 (Ref. 138124); 深さの範囲 0 - 300 m (Ref. 6793). Temperate; 61°N - 40°N, 171°W - 121°W (Ref. 86798)
分布 領土 | 国連食糧農業機関の区域 | エコシステム | 事件 | 目的のマップ | 導入 | Faunafri
North Pacific: west of Saint Matthew Island and Kuskokwim Bay in the Bering Sea, and Bowers Bank in the Aleutian Islands to Monterey Bay, California, USA. Populations from northern British Columbia are separate from those in the Fraser River (Ref. 10276).
初回成熟時の長さ / サイズ / 重さ / 年齢
成熟: Lm 15.5, range 15 - 16 cm
Max length : 34.0 cm TL オス/雌雄の選別がない; (Ref. 56527); common length : 20.0 cm TL オス/雌雄の選別がない; (Ref. 7354); 最大記録サイズ: 5 年 (Ref. 12193)
Max length : 34.0 cm TL オス/雌雄の選別がない; (Ref. 56527); common length : 20.0 cm TL オス/雌雄の選別がない; (Ref. 7354); 最大記録サイズ: 5 年 (Ref. 12193)
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) : 10 - 13; 肛門の骨: 0; 臀鰭: 18 - 23; 脊つい: 65 - 72. Distinguished by the large canine teeth on the vomer and 18 to 23 rays in the anal fin (Ref. 27547). Adipose fin sickle-shaped; paired fins longer in males than in females; all fins with well developed breeding tubercles in ripe males which are poorly developed or absent in females (Ref. 27547). Adult coloration is brown to blue on back and top of the head, the sides lighter to silvery white, and the ventral surface white; speckling is fine, sparse and restricted to the back; peritoneum is light with black speckles (Ref. 6885). Fins transparent, pectorals and caudal often dusky (Ref. 27547). During spawning, male fish has a distinctly raised ridge along the middle of the body and a rough texture, differentiating it from the female which is smaller, smoother and shinier.
Body shape (shape guide): elongated; Cross section: compressed.
Body shape (shape guide): elongated; Cross section: compressed.
Found near shore and in coastal inlets and rivers (Ref. 2850). Possibly to 625 m depth (Ref. 6793). Spends most of its life in the sea, returning to freshwater streams to spawn (Ref. 27547). There is evidence of return to natal streams (Ref. 10276). May migrate up to 160 km upstream. Feeds on plankton and only while at sea (11699, 10276). Excellent food fish and source of oil (15% body wt.). Anadromous (Ref. 96339).
ライフサイクルと交尾行動 成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
The spawning run from the sea to freshwater streams begins when river temperature rises to about 4.4° but the fish stop running if temperature exceeds 7.8°C. Males predominate the early part of the run, but their numbers are equalled or exceeded by females later (Ref. 10276, 11699). Adults usually die after spawning but some move back to the sea and return to spawn a second time (Ref. 1998). Upon hatching, larvae are found near the bottom and are soon carried downstream to salt water and eventually found in the scattering layer of coastal waters (Ref. 27547).
主な参考文献
参考文献のアップロード | 参考文献 | コーディネーター | 協力者
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)
CITES
Not Evaluated
人間に対する脅威
Harmless
人間の用途
水産業: 商業
FAO - 水産業: landings search; Publication: search | FishSource | 私達の周りの海
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ヘテロ接合性
遺伝
遺伝的多様性
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遺伝
遺伝的多様性
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インターネットの情報源
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モデルに基づく推定値
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系統多様性指数 (参照 82804) |
PD50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.00372 (0.00180 - 0.00765), b=3.17 (2.99 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
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栄養段階 (参照 69278) |
3.3 ±0.37 se; based on food items. |
| Generation time | 3.2 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies. |
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回復力 (参照 120179) |
手段, １．４年～４．４年の倍増期間の最小個体群 (tm=2-6; tmax=5; K=0.34; Fec=17,000-60,000 Musick et al. 2000 (Ref. 36717)). |
| Rate of population increase | Prior r = 0.15, 95% CL = 0.10 - 0.22, Based on 1 full stock assessment. |
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漁業の脆弱性 (Ref. 59153) |
Low to moderate vulnerability (33 of 100). 🛈 |
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気候脆弱性 (Ref. 125649) |
Moderate vulnerability (35 of 100). 🛈 |
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価格帯 (Ref. 80766) |
Very high. |
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栄養素 (Ref. 124155) |
Calcium = 98.1 [24.8, 242.3] mg/100g; Iron = 0.808 [0.238, 2.305] mg/100g; Protein = 14.8 [13.7, 16.1] %; Omega3 = 1.23 [0.53, 3.04] g/100g; Selenium = 13.3 [5.8, 38.0] μg/100g; VitaminA = 15.1 [4.9, 47.7] μg/100g; Zinc = 1.02 [0.47, 1.97] mg/100g (wet weight); based on nutrient studies. |