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Semotilus atromaculatus

(Mitchill, 1818)

Creek Chub

G5Secure Found in 31 roadless areas NatureServe Explorer →
G5SecureGlobal Rank
Least concernIUCN
Identity
Unique IDELEMENT_GLOBAL.2.104867
Element CodeAFCJB41010
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVertebrate Animal
IUCNLeast concern
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomAnimalia
PhylumCraniata
ClassActinopterygii
OrderCypriniformes
FamilyLeuciscidae
GenusSemotilus
Concept Reference
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. American Fisheries Society, Special Publication 20. 183 pp.
Taxonomic Comments
A hybrid Phoxinus oreas x Semotilus atromaculatus has been recorded in the James River drainage, Virginia (Copeia 1992:548-553). Has hybridized with Phoxinus erythrogaster in Clark Creek, Wilkinson County, Mississippi (Grady and Cashner 1988). Also known to hybridize with Campostoma anomalum. Semotilus thoreauianus, formerly included in S. atromaculatus, was recognized as a distinct species by Johnson and Ramsey (1990). See Johnson and Ramsey (1990) for discussion of variation and subspecies.
Conservation Status
Rank MethodExpertise without calculation
Review Date2015-08-17
Change Date1996-09-17
Edition Date2012-03-27
Edition AuthorsHammerson, G.
Range Extent Comments
Range includes most of the eastern United States and southeastern Canada, in the Atlantic, Great Lakes, Hudson Bay, Mississippi, and Gulf of Mexico basins as far west as Saskatchewan, Wyoming, and the Brazos River, Texas, but not including Florida and southern Georgia; isolated population in the upper Pecos and Canadian river systems, New Mexico; introduced elsewhere in the United States (Page and Burr 2011).
Occurrences Comments
This species is represented by a large number of subpopulations and locations.
Threat Impact Comments
Localized threats may exist, but on a range-wide scale no major threats are known.
Ecology & Habitat

Habitat

Clear headwaters, creeks, and small rivers; prefers streams less than 12 m wide and with gravel-sand-silt substrate; occasionally in shallows of small clear lakes. Spawns in small gravelly streams in smooth water near a riffle, or over littoral areas of gravel in lakes. Eggs laid in pit made in bottom by male (or appropriated from stoneroller minnow); covers eggs with stones, forming a ridge (Scott and Crossman 1973, Johnston and Page 1992).

Ecology

Schooling species.

Reproduction

Spawns late spring to midsummer, mostly in spring. Male may guard eggs. Eggs hatch in about 6 days at 18 C. Sexually mature at age 1-2 in females, 2-3 in males (Becker 1983, Smith 1979).
Other Nations (2)
CanadaN5
ProvinceRankNative
ManitobaS5Yes
Nova ScotiaS5Yes
QuebecS5Yes
SaskatchewanS3Yes
OntarioS5Yes
New BrunswickS5Yes
United StatesN5
ProvinceRankNative
KansasS5Yes
MarylandS5Yes
NebraskaS5Yes
TexasS3Yes
ArkansasS4Yes
WyomingS5Yes
South DakotaS5Yes
MissouriSNRYes
ColoradoS5Yes
ConnecticutS5Yes
AlabamaS5Yes
District of ColumbiaS4Yes
OhioS5Yes
TennesseeS5Yes
North CarolinaS5Yes
KentuckyS4Yes
IowaS5Yes
MinnesotaSNRYes
VermontS5Yes
OklahomaSNRYes
PennsylvaniaS5Yes
South CarolinaS5Yes
West VirginiaS5Yes
MississippiS5Yes
LouisianaS5Yes
New JerseyS5Yes
IllinoisS5Yes
MontanaS4Yes
VirginiaS5Yes
MassachusettsS4Yes
North DakotaSNRYes
New YorkS5Yes
WisconsinS5Yes
MichiganS5Yes
MaineS4Yes
GeorgiaS5Yes
UtahSNANo
New MexicoS3Yes
DelawareS4Yes
IndianaS5Yes
New HampshireS5Yes
Roadless Areas (31)
Arkansas (2)
AreaForestAcres
East ForkOzark-St. Francis National Forest13,037
Gee CreekOzark-St. Francis National Forest7,957
Colorado (1)
AreaForestAcres
Dome PeakRoutt NF35,716
Georgia (3)
AreaForestAcres
Joe GapChattahoochee National Forest5,321
Patterson GapChattahoochee National Forest1,186
Pink KnobChattahoochee National Forest12,127
Kentucky (1)
AreaForestAcres
WolfpenDaniel Boone National Forest2,835
Michigan (1)
AreaForestAcres
Norwich Plains Revised Roadless AreaOttawa National Forest4,360
Minnesota (1)
AreaForestAcres
Brule Lake - Eagle MountainSuperior National Forest12,380
Mississippi (1)
AreaForestAcres
Sandy Creek Rare Ii AreaHomochitto National Forest2,620
North Carolina (2)
AreaForestAcres
Balsam ConePisgah National Forest10,591
Chunky Gal (addition)Nantahala National Forest3,336
Pennsylvania (1)
AreaForestAcres
Allegheny FrontAllegheny National Forest7,430
South Dakota (2)
AreaForestAcres
Cheyenne RiverBuffalo Gap National Grassland7,572
Red ShirtBuffalo Gap National Grassland17,007
Tennessee (4)
AreaForestAcres
Beaver Dam CreekCherokee National Forest5,070
Brushy RidgeCherokee National Forest7,469
Sampson Mountain AdditionCherokee National Forest3,064
Upper Bald RiverCherokee National Forest9,202
Vermont (2)
AreaForestAcres
Griffith Lake 09084Green Mountain and Finger Lakes National Forests1,833
Wilder Mountain 09082Green Mountain and Finger Lakes National Forests8,759
Virginia (2)
AreaForestAcres
Little RiverGeorge Washington National Forest27,292
Little Wilson Creek Addition BJefferson National Forest1,725
West Virginia (6)
AreaForestAcres
Cranberry AdditionMonongahela National Forest11,123
Cranberry Glades Botanical AreaMonongahela National Forest785
Falls Of Hills CreekMonongahela National Forest6,925
Glady ForkMonongahela National Forest3,239
Little MountainMonongahela National Forest8,172
Mcgowan MountainMonongahela National Forest10,504
Wyoming (2)
AreaForestAcres
Laramie PeakMedicine Bow-Routt National Forest28,608
Snowy RangeMedicine Bow-Routt National Forest29,660
References (56)
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