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Percina sciera (Swain, 1883)

Dusky darter
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Percina sciera
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United States (contiguous states) country information

Common names: Dusky darter
Occurrence: endemic
Salinity: freshwater
Abundance: common (usually seen) | Ref: Page, L.M. and B.M. Burr, 1991
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Recorded from the Gulf Coastal drainages, from the Tombigbee River portion of Mobile Basin west through the Guadalupe River, Texas, and extending up the Mississippi River basin to northern Indiana and central Ohio (Ref. 10294). Known from Strong River (Pearl River-Gulf of Mexico), Simpson County, Mississippi (Ref. 41482).
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, 1991
National Database:

Common names from other countries

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

Teleostei > Perciformes/Percoidei (Perchs) > Percidae (Perches) > Etheostomatinae
Etymology: Percina: Latin, diminutive of perch = perch (Ref. 45335);  sciera: sciera meaning dusky (Ref. 10294).

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

; 淡水 底中水层性; pH range: 6.8 - 7.8; dH range: 8 - 18.   溫帶; 10°C - 24°C (Ref. 12468); 41°N - 29°N

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

North America: Mississippi River basin from Ohio and West Virginia to eastern Illinois and south to Louisiana in the USA; Gulf drainages from Black Warrior River in Alabama to Guadalupe River in Texas, USA.
北美洲: 密西西比河流域從俄亥俄州與西維吉尼亞到伊利諾州東部而且南至在美國的路易斯安那; 從在阿拉巴馬州的黑武士河到哥德洛普島河在美國德州的海灣流域。

Length at first maturity / 大小 / 重量 / 年龄

Maturity: Lm ?, range 5 - ? cm
Max length : 13.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 5723); common length : 7.5 cm TL 雄鱼/尚未辨别雌雄; (Ref. 12193); 最大年龄: 4 年 (Ref. 12193)

生物学特性     字汇 (例如 epibenthic)

Inhabit fast gravel runs, sometimes riffles, of creeks and small to medium rivers. Often found near brush (Ref. 5723, 10294). Young are found in shallower gravel riffles (Ref. 7043). Juveniles feed on midge and blackfly larvae; adults consume caddisfly and mayfly larvae (Ref. 10294). Males are larger and darker in color during breeding (Ref. 69400).

栖息于快速的砾石小支流, 有时急流, 小溪及小型到中型河川。 时常在灌木的附近发现。

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

While in captivity, males exhibit tail-beating while infront of a large female aside from color changes as prespawning behavior (Ref. 69400). 'The generalized condition of a midventral row of specialized scales suggests that the male mounts the female and aligns his body with hers during fertilization and deposition of the eggs' (Ref. 69400).北美洲: 密西西比河流域從俄亥俄州與西維吉尼亞到伊利諾州東部而且南至在美國的路易斯安那; 從在阿拉巴馬州的黑武士河到哥德洛普島河在美國德州的海灣流域。

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. 130435)

  最不相关 (LC) ; Date assessed: 01 March 2012

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

  无害处的




人类利用

FAO(Publication : search) | FishSource |

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网络资源

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00537 (0.00235 - 0.01227), b=3.14 (2.94 - 3.34), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
营养阶层 (Ref. 69278):  3.2   ±0.40 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 (tmax=4; tm=1; Fec=80-196).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).