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 居于水底的; 深度上下限 2 - 160 m. 溫帶; 51°N - 41°N
North America: restricted to Great Lakes (Lake Huron in Canada-USA and Lake Michigan in USA) and Lake Nipigon in Canada.
北美洲: 在加拿大侷限於五大湖 (湖休倫湖在美國的加拿大-美國與密西根湖) 與湖 Nipigon了。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 39.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 5723); common length : 33.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 1998); 最大年龄: 14 年 (Ref. 12193)
背棘 (总数): 0; 背的软条 (总数): 9-11; 臀棘 0; 臀鳍软条: 10 - 13; 脊椎骨: 56 - 59. This species is usually characterized by darkly pigmented fins and deep body. Body elongate, distinctly laterally compressed, and deep, the greatest body depth in front of the dorsal fin. Head triangular; eye large; snout blunt, its length usually greater than eye diameter; mouth terminal, lower jaw usually projecting beyond upper, sometimes equal to upper jaw, maxillary pigmented , and extending posteriorly to below the anterior edge of the pupil. Overall coloration dark silvery, with pink or purple iridescence on sides, back dark green to black and silvery below. Maxillary and mandible whitish but heavily pigmented. All fish typically black, particularly on outer half.
这种通常是特徵为深色的鳍且深身体。 细长的身体, 明显侧扁，且深, 在背鳍之前的最大体高。 头部三角形的; 眼大的; 吻钝的, 它的长度通常大于眼直径; 口端位, 下颌通常突出的超过上面的, 有时等于上颌，颚的有颜色的 , 而且向后延伸到在瞳孔的前缘之下。 整体的颜色深色的银色, 与粉红或紫色的彩虹色在侧边上, 背面深绿色的到黑色而下面银色的。 上颌骨与下颚微白色的但是颜色深的。 所有的鱼典型黑色, 特别地在外部的一半上。
Formerly found in deep waters (90-160 m) of Lakes Michigan and Huron, and in 2-100 m in Lake Nipigon. Belongs to C. artedi complex.
从前发现于湖密西根州与休伦湖的深水域 (90-160 公尺)了, 与在湖 Nipigon 中的 2-100 公尺中。 属于 C. artedi 复合体。
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
北美洲: 在加拿大侷限於五大湖 (湖休倫湖在美國的加拿大-美國與密西根湖) 與湖 Nipigon了。
Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea and W.B. Scott, 1991. Common and scientific names of fishes from the United States and Canada. Am. Fish. Soc. Spec. Publ. (20):183 p. (Ref. 3814)
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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=0.00537 (0.00262 - 0.01101), b=3.22 (3.06 - 3.38), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.3 ±0.45 se; based on food items.
Generation time: 7.8 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
回复力 (Ref.
120179): 低的, 最小族群倍增时间4.5 - 14 年 (tmax=14).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (54 of 100).
