分類 / Names
共通名の | 類義語 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
(Salmons) > Salmonidae
(Salmonids) > Coregoninae
Etymology: Coregonus: Greek, kore = pupils of the eye + Greek, gonia = angle (Ref. 45335). More on author: Gmelin.
Environment: milieu / climate zone / depth range / distribution range
; 海; 新鮮な水; 汽水性の 底生の; 昇流魚 (Ref. 51243). Polar; 71°N - 44°N, 5°W - 133°W
Arctic Ocean basin, from Finland (lapland) to eastern Siberia, Alaska, and Canada eastward to Mackenzie drainage. Appendix III of the Bern Convention (protected fauna). Belongs to Coregonus clupeaformis complex (Ref. 27547).
Length at first maturity / サイズ / 重さ / 年齢
Maturity: Lm ?, range 17 - ? cm
Max length : 50.0 cm SL オス/雌雄の選別がない; (Ref. 59043); common length : 32.8 cm TL オス/雌雄の選別がない; (Ref. 12193); 最大記録サイズ: 14 年 (Ref. 12193)
背面の脊椎 (合計): 0; 背鰭 (合計): 11-13; 肛門の骨 0; 臀鰭: 10 - 14; 脊つい: 58 - 63. Distinguished by the gill rakers that are longer than 20% of the interorbital width, 19 to 25 gill rakers (with modal counts of 22 or 23), and a pronounced hump behind the head in adults (Ref. 27547). Adipose fin well developed, often larger in males; axillary process present in pelvic fins (Ref. 27547). Dark brown to midnight blue above fading to silver on sides and wide beneath; no parr marks in young (Ref. 27547).
Inhabits coastal waters near shore (Ref. 5723), lower reaches of rivers with slow current, large lakes with tributaries, floodplain lakes, deltas and estuaries, brackish waters (Ref. 59043). Migrates up to more than 1,200 km inland for spawning (Ref. 5723). Overwinters near river mouths (Ref. 5723). There are non-migratory freshwater populations. Adults feed mostly on mollusks, crustaceans and chironomid larvae (Ref. 28219).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Upstream spawning migrations may be extensive but some populations seldom venture far upstream and still others may never go to sea at all (Ref. 593). Mature adults migrate upstream as early as June to spawn in October. It is assumed that the young hatch in late winter and spring, subsequently moving downstream, to return as mature adults 4 to 6 years later (Ref. 27547).
Kottelat, M., 1997. European freshwater fishes. Biologia 52, Suppl. 5:1-271. (Ref. 13696)
CITES (Ref. 118484)
水産業: 商業; 水産養殖: 商業
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00550 (0.00333 - 0.00907), b=3.24 (3.10 - 3.38), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245
栄養段階 (Ref. 69278
): 3.3 ±0.2 se; Based on diet studies.
回復力 (Ref. 120179
): 低い, ４．５年～１４年の倍増期間の最小個体群 (tm=3-14; tmax=14; Fec=8,000).
弱み (Ref. 59153
): High vulnerability (64 of 100) .