";} } ?> Prosopium coulterii, Pygmy whitefish : gamefish

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Prosopium coulterii (Eigenmann & Eigenmann, 1892)

Pygmy whitefish
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Image of Prosopium coulterii (Pygmy whitefish)
Prosopium coulterii
Picture by Lyons, J.

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

Actinopteri > Salmoniformes (Salmons) > Salmonidae (Salmonids) > Coregoninae
Etymology: Prosopium: Greek, prosopon = face (Ref. 45335);  coulterii: Named after Dr. J.M. Coulter, a distinguished botanist..
More on authors: Eigenmann & Eigenmann.

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

; 淡水 底中水层性; 深度上下限 18 - 168 m (Ref. 27547), usually 55 - 70 m (Ref. 1998). 溫帶; 59°N - 47°N

分布 国家 | FAO区域 | 生态系 | 标本纪录 | Point map | 简介 | Faunafri

North America: three disjunct areas: Lake Superior in Ontario, Canada and Michigan, USA; Yukon River drainage in Yukon, Canada to Columbia River drainage in western Montana and Washington, USA; and Chignik, Naknek and Wood River drainages in southwest Alaska. Europe: Russia (Ref. 26334).
北美洲: 三個分離的區域: 在加拿大安大略省與密西根州的秀克必李耳湖; 在育空的育空河流域在加拿大對在西方的蒙大納與美國在華盛頓州中的哥倫比亞河流域; 而且 Chignik , Naknek 與在阿拉斯加州西南部的木材河流域。 前蘇聯: 俄國.(參考文獻 26334)

大小 / 重量 / 年龄

Maturity: Lm ?  range ? - ? cm
Max length : 28.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 5723); common length : 11.5 cm TL 雄鱼/尚未辨别雌雄; (Ref. 12193); 最大年龄: 9 年 (Ref. 10320)

简单描述 型态特徵 | 形态测量图

背棘 (总数): 0; 背的软条 (总数): 10-13; 臀棘 0; 臀鳍软条: 10 - 14; 脊椎骨: 49 - 55. Body elongate, almost cylindrical. Head elongate, its length slightly greater than body depth; eye relatively large, its diameter greater than snout length; snout bluntly rounded, overhanging mouth, not obviously pointed, a single flap of skin present between nostrils. Nuptial tubercles developed in both males and females, but more conspicuous in males, and occur on top of head, on scales on back and sides, and on paired fins. Body is brownish above, silvery on sides and white below. Dorsal, caudal, and pectoral fins usually clear, anal and pelvic whitish and immaculate, a faint dark spot sometimes present on base of caudal fin. A series of 12 - 14 similar spots present along the midline of the back, and 7 - 14 dark, round or oval parr marks with diffuse borders present along the lateral line of young and sub adults, although some Alaskan forms retain parr marks even on largest fish.
细长的身体, 几乎圆筒形。 头部延长, 它的长度些微大于体高; 眼相当大的, 它的直径大于吻的长度; 吻钝圆形,悬在嘴上, 不是明显尖, 一个皮盖在鼻孔之间呈现。 珠星发展的在雄性与雌性中, 但是更显着的在雄性中, 而且生存在头顶上面, 在鳞片上背面与侧边, 与在偶鳍上。 身体在侧边上是上方褐色的, 银色的与腹面白色的。 背鳍、尾鳍与胸鳍通常清澈的, 臀鳍与腹鳍微白色而无斑点的, 一个模糊的深色斑点在尾鳍基底上有时候有。 一系列的 12- 14个相似的斑点存在的沿着背部的中线 , 与 7- 14个深色的,圆的或椭圆形的幼鲑横带有扩散的边缘存在的沿着幼鱼与亚成鱼的侧线, 虽然一些阿拉斯加型甚至在大的鱼上保有幼鲑横带。

生物学特性     字汇 (例如 epibenthic)

Inhabits lakes and rivers of mountainous areas (Ref. 1998). Feeds mainly on crustaceans and aquatic insect larvae (Ref. 1998). Minimum depth reported from Ref. 1998.

栖息于多山区域的湖与河。 (参考文献 1998) 主要吃甲壳动物与水生的昆虫幼生。 (参考文献 1998) 最小深度记录自了参考文献 1998.

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

Moves to spawning grounds in the early winter and presumably back into deeper water after spawning. Spawns at night, presumably the eggs are broadcast, settling into interstices in the gravel. Hatching occurs the following spring (Ref. 27547).北美洲: 三個分離的區域: 在加拿大安大略省與密西根州的秀克必李耳湖; 在育空的育空河流域在加拿大對在西方的蒙大納與美國在華盛頓州中的哥倫比亞河流域; 而且 Chignik , Naknek 與在阿拉斯加州西南部的木材河流域。 前蘇聯: 俄國.(參考文獻 26334)

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. 125652)

  不评价 

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

  无害处的





人类利用

渔业: 没有兴趣; 游钓鱼种: 是的
FAO - Publication: search | FishSource |

更多信息

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卵的发育
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Otoliths
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眼睛色素

工具

特别资料

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网络资源

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | 核实 FishWatcher | CISTI | Catalog of Fishes: , | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | 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 | Socotra Atlas | 树状分类阶层 | Wikipedia: 转至, 搜寻 | World Records Freshwater Fishing | 动物学的记录

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5156   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00457 (0.00239 - 0.00875), b=3.14 (2.96 - 3.32), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
营养阶层 (Ref. 69278):  3.1   ±0.35 se; based on food items.
Generation time: 2.0 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
回复力 (Ref. 120179):  中等的, 族群倍增时间最少 1.4 - 4.4年 (tm=1-2; tmax=9; Fec=103).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (25 of 100).