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The Nonindigenous Occurrences section of the NAS species profiles has a new structure. The section is now dynamically updated from the NAS database to ensure that it contains the most current and accurate information. Occurrences are summarized in Table 1, alphabetically by state, with years of earliest and most recent observations, and the tally and names of drainages where the species was observed. The table contains hyperlinks to collections tables of specimens based on the states, years, and drainages selected. References to specimens that were not obtained through sighting reports and personal communications are found through the hyperlink in the Table 1 caption or through the individual specimens linked in the collections tables.




Noturus gyrinus
Noturus gyrinus
(Tadpole Madtom)
Fishes
Native Transplant

Copyright Info
Noturus gyrinus (Mitchill, 1817)

Common name: Tadpole Madtom

Taxonomy: available through www.itis.govITIS logo

Identification: Becker (1983); Page and Burr (1991); Etnier and Starnes (1993); Jenkins and Burkhead (1994).

Size: 13 cm.

Native Range: Atlantic and Gulf Slope drainages from New Hampshire to Nueces River, Texas; St. Lawrence-Great Lakes, Hudson Bay (Red River), and Mississippi River basins from southern Quebec to southern Saskatchewan, and south to Gulf. Absent from Appalachian and Ozark Highlands (Page and Burr 1991).
Native range data for this species provided in part by NatureServe NS logo
Hydrologic Unit Codes (HUCs) Explained
Interactive maps: Point Distribution Maps

Nonindigenous Occurrences:

Table 1. States with nonindigenous occurrences, the earliest and latest observations in each state, and the tally and names of HUCs with observations†. Names and dates are hyperlinked to their relevant specimen records. The list of references for all nonindigenous occurrences of Noturus gyrinus are found here.

StateFirst ObservedLast ObservedTotal HUCs with observations†HUCs with observations†
CT199319931Thames
ID194219905Brownlee Reservoir; Hells Canyon; Lower Boise; Middle Snake-Succor; Upper Snake-Rock
MA199220053Ashuelot River-Connecticut River; Chicopee River; Quinebaug River
NE195619561Frenchman
NH197319731Merrimack River
OH198619861Muskingum
OR195320063Brownlee Reservoir; Lower Malheur; Pacific Northwest Region
TX199119911Rio Grande-Falcon
WA197219992Lower Snake-Tucannon; Walla Walla

Table last updated 12/5/2024

† Populations may not be currently present.


Means of Introduction: Unintentional in most locations. It is believed that introduced channel catfish and bullhead stock was contaminated with Tadpole Madtoms (Linder 1963; Taylor 1969; Simpson and Wallace 1978; Wydoski and Whitney 1979; Hartel 1992).

Status: Established in Connecticut, Idaho, Massachusetts, New Hampshire, Ohio, Oregon, and Washington; reported in Nebraska and Texas.

Impact of Introduction: The impacts of this species are currently unknown, as no studies have been done to determine how it has affected ecosystems in the invaded range. The absence of data does not equate to lack of effects. It does, however, mean that research is required to evaluate effects before conclusions can be made.

Remarks: Introduced populations in Washington resulted from the downriver dispersal of fish introduced into Idaho rivers (Wydoski and Whitney 1979). The Tadpole Madtom has not been collected from the Thames drainage in Connecticut (B. Gerrish, personal communication). Record from a lake near Poteau, Oklahoma, may be the result of an introduction (Taylor 1969).

References: (click for full references)

Becker, G. C. 1983. Fishes of Wisconsin. University of Wisconsin Press, Madison, WI.

Etnier, D. A., and W. C. Starnes. 1993. The fishes of Tennessee. University of Tennessee Press, Knoxville, TN.

Hartel, K. E. 1992. Non-native fishes known from Massachusetts freshwaters. Occasional Reports of the Museum of Comparative Zoology, Harvard University, Fish Department, Cambridge, MA. 2. September. pp. 1--9.

Hubbs, C., R. J. Edwards, and G. P. Garrett. 1991. An annotated checklist of freshwater fishes of Texas, with key to identification of species. Texas Journal of Science, Supplement 43(4):1--56.

Idaho Fish and Game. 1990. Fisheries Management Plan 1991--1995. Appendix I -- A list of Idaho fishes and their distribution by drainage. Idaho Fish and Game.

Jenkins, R. E., and N. M. Burkhead. 1994. Freshwater fishes of Virginia. American Fisheries Society, Bethesda, MD.

Jones, D. J. 1963. A history of Nebraska's fisheries resources. Dingell-Hohnson Federal Aid in Fish Restoration Project F-4-R Publication. Nebraska Game, Forestation and Parks Commission.

Linder, A. D. 1963. Idaho's alien fishes. Tebiwa 6(2):12--15.

Page, L. M., and B. M. Burr. 1991. A field guide to freshwater fishes of North America north of Mexico. The Peterson Field Guide Series, volume 42. Houghton Mifflin Company, Boston, MA.

Scarola, J. F. 1973. Freshwater fishes of New Hampshire. New Hampshire Fish and Game Department, Division of Inland and Marine Fisheries. 131 pp.

Simpson, J., and R. Wallace. 1978. Fishes of Idaho. University of Idaho Press, Moscow, ID.

Wydoski, R. S., and R. R. Whitney. 1979. Inland fishes of Washington. University of Washington Press, Seattle, WA.



Other Resources:
FishBase Summary

Author: Fuller, P.

Revision Date: 4/19/2006

Peer Review Date: 4/19/2006

Citation Information:
Fuller, P., 2024, Noturus gyrinus (Mitchill, 1817): U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=747, Revision Date: 4/19/2006, Peer Review Date: 4/19/2006, Access Date: 12/5/2024

This information is preliminary or provisional and is subject to revision. It is being provided to meet the need for timely best science. The information has not received final approval by the U.S. Geological Survey (USGS) and is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the information.

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The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2024]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [12/5/2024].

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