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Nocomis leptocephalus (Girard, 1856)

Bluehead chub
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United States (contiguous states) country information

Common names: Bluehead chub
Occurrence: endemic
Salinity: freshwater
Abundance: common (usually seen) | Ref: Page, L.M. and B.M. Burr, 2011
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Occurs in Atlantic and Gulf Slope drainages from Shenandoah River in Virginia to Mississippi River in Mississippi; tributaries of Mississippi River north to Yazoo River system in Mississippi; upper New River drainage in West Virginia, Virginia and North Carolina; Bear Creek (Tennessee River drainage) in Alabama and Mississippi. Introduced into Little Tennessee River and French Broad systems in North Carolina and Tennessee. Also Ref. 5723.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/us.html
National Fisheries Authority: http://www.nmfs.gov
Occurrences: Occurrences Point map
Main Ref: Page, L.M. and B.M. Burr, 2011
National Database:

Common names from other countries

小头美鱥, Nocomis drobnohlavý, Nokomis modrohlavý, ... more

分類 / Names 俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa

Teleostei > Cypriniformes (Carps) > Leuciscidae (Minnows) > Pogonichthyinae
Etymology: Nocomis: An Indian (North America) name used by Charles Girard; ojibwe, nokomiss = grandmother (Ref. 45335).
  More on author: Girard.

Environment: milieu / climate zone / depth range / distribution range 生態學

; 淡水 居於水底的.   溫帶; 39°N - 31°N

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

North America: Atlantic and Gulf Slope drainages from Shenandoah River in Virginia to Mississippi River in Mississippi; tributaries of Mississippi River north to Yazoo River system in Mississippi; upper New River drainage in West Virginia, Virginia and North Carolina, USA; Bear Creek (Tennessee River drainage) in Alabama and Mississippi. Introduced into Little Tennessee River and French Broad systems in North Carolina and Tennessee, USA.
北美洲: 大西洋斜坡與海灣斜坡流域從維吉尼亞的雪蘭多河到密西西比的珍珠河。 密西西比與路易斯安那的密西西比河的下游支流, 美國; 在美國西維吉尼亞，維吉尼亞與北卡羅萊那州的新河上游流域; 在美國阿拉巴馬州與密西西比州的貝爾溪。

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 26.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 86798); common length : 12.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 12193); 最大年齡: 4 年 (Ref. 12193)

生物學特性     字彙 (例如 epibenthic)

Inhabits rocky and sandy pools and runs of headwaters, creeks, and small to medium rivers (Ref. 86798).

棲息於河川源頭，小溪及小型到中型河川的多岩石多沙的水潭與小支流。

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚

北美洲: 大西洋斜坡與海灣斜坡流域從維吉尼亞的雪蘭多河到密西西比的珍珠河。 密西西比與路易斯安那的密西西比河的下游支流, 美國; 在美國西維吉尼亞，維吉尼亞與北卡羅萊那州的新河上游流域; 在美國阿拉巴馬州與密西西比州的貝爾溪。

主要參考資料 Upload your references | 參考文獻 | 合作者 | 合作者

Page, L.M. and B.M. Burr, 2011. A field guide to freshwater fishes of North America north of Mexico. Boston : Houghton Mifflin Harcourt, 663p. (Ref. 86798)

IUCN 瀕危狀態 (Ref. 130435)

  無危 (LC) ; Date assessed: 01 March 2012

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的




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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5078   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00501 (0.00232 - 0.01084), b=3.13 (2.94 - 3.32), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層 (Ref. 69278):  3.1   ±0.4 se; based on size and trophs of closest relatives
回復力 (Ref. 120179):  中等的, 族群倍增時間最少 1.4 - 4.4年 (tmax=4).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (16 of 100).