Coregonus nelsonii, Alaska whitefish : fisheries, gamefish

Coregonus nelsonii Bean, 1884

Alaska whitefish
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Coregonus nelsonii
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drawing shows typical fish in this Family.

分类 / Names 俗名 | 同种异名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii 辐鳍鱼纲 (条鳍鱼) > Salmoniformes (Salmons) > Salmonidae (Salmonids) > Coregoninae
Etymology: Coregonus: Greek, kore = pupils of the eye + Greek, gonia = angle (Ref. 45335).  More on author: Bean.

Environment: milieu / climate zone / depth range / distribution range 生态学

; 淡水 底中水层性; 河川洄游 (Ref. 27547).   北方生物帶; 68°N - 59°N

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North America: Probably restricted to northern Northwest Territories, Yukon Territory in Canada and Alaska in Yukon River, Paxson Lake, Copper River system, Anderson River and Mackenzie River delta. Hybridizes with Stenodus leucichthys, probably a result of simultaneous broadcasting of reproductive products in the same area; occasionally hybridizes with Coregonus sardinella (Ref. 27547). Belongs to the Coregonus clupeaformis complex (Ref. 27547).
北美洲: 可能侷限於西北地區北部了, 在育空河, Paxson 湖,銅河流域,安德遜河與麥肯茲河三角州的加拿大與阿拉斯加州的育空河一帶。 與 Stenodus leucichthys 雜交, 可能在相同的區域中的生殖產品的一個同時廣播的結果; 偶然地與 Coregonus sardinella 雜交。 (參考文獻 27547) 屬於 Coregonus clupeaformis 複合體。 (參考文獻 27547)

大小 / 重量 / 年龄

Maturity: Lm ?  range ? - ? cm
Max length : 56.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 5723)

简单描述 型态特徵 | 形态测量图

背棘 (总数): 0; 背的软条 (总数): 11-13; 臀棘 0; 臀鳍软条: 10 - 14; 脊椎骨: 60 - 63. Distinguished by the gill rakers that are longer than 20% of the interorbital width, a total of 22 to 27 gill rakers on the first arch (with modal counts of 24 or 25), 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).
区别的特徵为鳃耙那是长度超过 20% 的眼间骨宽度, 总数为 22 到 27个鳃耙在第一个弓 (具有型计数 24 或者 25) 上, 与一个明显的隆起在头部后面当成鱼时.(参考文献 27547) 脂鳍发展良好的, 时常比较大的在雄性中; 腋窝的突起出现在腹鳍。 (参考文献 27547) 深褐色的对褪成的暗蓝色上方在侧边上银色的与宽的之下; 当幼鱼时的没有幼鲑横带.(参考文献 27547)

生物学特性     字汇 (例如 epibenthic)

Occurs in small to large rivers (Ref. 5723). Rarely enters lakes (Ref. 5723). Makes fairly extensive upstream and downstream movements related to spawning runs (Ref. 27547). Feeds mainly on immature insects (Ref. 27547). Usually does not feed during the latter part of the spawning run (Ref. 27547). Excellent food fish but usually not eaten (Ref. 27547).

出现于小型到大型河川。 (参考文献 5723) 很少进入湖。 (参考文献 5723) 进行非常大规模的被与产卵回游有关的溯河及顺流的运动。 (参考文献 27547) 主要吃不成熟的昆虫。 (参考文献 27547) 通常在后者产卵回游的部份的时候不进食。 (参考文献 27547) 优良的食用鱼但是通常不吃.(参考文献 27547)

Life cycle and mating behavior 成熟度 | 繁殖 | 产卵场 | | 孕卵数 | 仔鱼

The spawning run involves an upward migration beginnning as early as late June. The spawning act occurs at night or during the day. A female begins to swim vertically toward the surface, belly upstream. A male (sometimes 2 or 3) joins her and eggs and milt are released as fish approach the surface. The fish break the surface, fall away from each other and return to the bottom. After spawning most move downstream. The young of the year move downstream during their first year and do not return until they are sexually mature. Generally, the same spawning grounds are utilized yearly (Ref. 27547).北美洲: 可能侷限於西北地區北部了, 在育空河, Paxson 湖,銅河流域,安德遜河與麥肯茲河三角州的加拿大與阿拉斯加州的育空河一帶。 與 Stenodus leucichthys 雜交, 可能在相同的區域中的生殖產品的一個同時廣播的結果; 偶然地與 Coregonus sardinella 雜交。 (參考文獻 27547) 屬於 Coregonus clupeaformis 複合體。 (參考文獻 27547)

主要参考文献 Upload your references | 参考文献 | 合作者 | 合作者

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)

世界自然保护联盟红皮书 (Ref. 123251)

  不评价 

CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

  无害处的





人类利用

渔业: 自给性渔业; 游钓鱼种: 是的
FAO(Publication : search) | FishSource |

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特别资料

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网络资源

Aquatic Commons | BHL | Cloffa | Websites from users | 核实 FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(基因组, 核苷酸) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | 树状分类阶层 | Wikipedia(转至, 搜寻) | World Records Freshwater Fishing | Zoobank | 动物学的记录

Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00537 (0.00266 - 0.01086), b=3.22 (3.05 - 3.39), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
营养阶层 (Ref. 69278):  3.5   ±0.43 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 (tm=3-5).
脆弱性 (Ref. 59153):  Moderate to high vulnerability (54 of 100) .
价格分类 (Ref. 80766):   Very high.