分类 / Names
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Teleostei >
Salmoniformes (Salmons) >
Salmonidae (Salmonids) > Coregoninae
Etymology: Coregonus: Greek, kore = pupils of the eye + Greek, gonia = angle (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 大洋性. 溫帶; 49°N - 41°N
North America: found only in Great Lakes (except Lake Erie), Canada-USA. This species is common in Lake Superior, extremely rare, possibly extirpated, in Lakes Huron and Ontario, and endangered in Lake Michigan.
北美洲: 發現只在五大湖 (除了伊利湖以外) 中在加拿大-美國。 這種是常見於秀克必李耳湖, 非常稀有, 可能地滅絕了, 在休倫湖與安大略省, 與瀕臨絕種的在密西根湖。
Length at first maturity / 大小 / 重量 / 年龄
Maturity: Lm 18.0 range ? - ? cm
Max length : 35.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 5723); common length : 25.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 1998); 最大年龄: 10 年 (Ref. 1998)
背棘 (总数): 0; 背的软条 (总数): 9-11; 臀棘 0; 臀鳍软条: 9 - 16; 脊椎骨: 55 - 58. Body elongate, distinctly compressed laterally, and thin, greatest body depth in front of dorsal fin. Head about 23 - 26% of total length; eye large, but shorter than snout; snout always longer than eye diameter; mouth terminal, lower jaw usually projecting beyond the upper, usually with a distinct symphyseal knob or projecting posteriorly to below the anterior half of the eye. Overall coloration silvery with pink or purple iridescence, dark on back, silvery on sides, white below; often dark on tip of lower jaw, top of head, back and on dorsal and caudal fins. Pelvic fins usually immaculate.
细长的身体, 明显扁长形侧面地, 与在背鳍之前的细又最大的体高。 头部大约 23- 26% 的全长; 眼大的, 但是短于吻; 吻总是长度超过眼直径; 口端位, 下颌通常突出的超过上颌, 通常有一个明显的合生疖瘤或突出的在后部地到在那之下前半部的眼。 整体的颜色银色的有粉红或紫色的彩虹色, 深色的背面, 银色的在侧边上, 腹面白色的; 时常深色的在下颌，头顶的顶端上, 背面与在背鳍与尾鳍鳍上。 腹鳍通常无斑点的。
Inhabits open water.
栖息于开放水域。
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
北美洲: 發現只在五大湖 (除了伊利湖以外) 中在加拿大-美國。 這種是常見於秀克必李耳湖, 非常稀有, 可能地滅絕了, 在休倫湖與安大略省, 與瀕臨絕種的在密西根湖。
Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00589 (0.00340 - 0.01021), b=3.22 (3.07 - 3.37), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.5 ±0.50 se; based on food items.
回复力 (Ref.
120179): 中等的, 族群倍增时间最少 1.4 - 4.4年 (K=0.51; tmax=10).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (26 of 100).
Nutrients (Ref.
124155): Calcium = 26 [12, 54] mg/100g; Iron = 0.586 [0.296, 1.249] mg/100g; Protein = 19.1 [17.8, 20.3] %; Omega3 = 2.57 [0.84, 9.13] g/100g; Selenium = 17 [6, 57] μg/100g; VitaminA = 15.8 [4.6, 54.6] μg/100g; Zinc = 0.721 [0.498, 1.047] mg/100g (wet weight);
