Overview

Distribution

occurs (regularly, as a native taxon) in multiple nations

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National Distribution

Canada

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Year-round

United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Year-round

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Global Range: (5000-200,000 square km (about 2000-80,000 square miles)) Range is confined to the Harney Basin, Oregon (Page and Burr 2011). In addition to Harney Basin, Markle and Hill (2000) included the following areas in the range: Snake River basin, including Malheur River, Oregon and Idaho; lower Columbia basin (e.g., upper Willamette River system [but evidently mostly hybrids with C. hubbsi]; Gales Creek and Clatskanie River, Oregon); probably upper Columbia basin in Washington, southern British Columbia, and possibly other areas. Markle and Hill (2000) stated that further taxonomic study is needed.

Due to uncertainties in the distributional details of members of the Cottus bairdii complex, the watershed (HUC) map in NatureServe Explorer depicts the distribution of the complex, including Cottus bairdii and species now recognized as Cottus bendirei and Cottus hubbsi. The ranges of individual species will be mapped separately when further information becomes available.

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Range Description

Range is confined to the Harney Basin, Oregon (Page and Burr 2011). In addition to Harney Basin, Markle and Hill (2000) included the following areas in the range: Snake River basin, including Malheur River, Oregon and Idaho; lower Columbia basin (e.g., upper Willamette River system [but evidently mostly hybrids with C. hubbsi]; Gales Creek and Clatskanie River, Oregon); probably upper Columbia basin in Washington, southern British Columbia, and possibly other areas. Markle and Hill (2000) stated that further taxonomic study is needed.
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Northwestern U.S.A. and southwestern Canada: Oregon, Idaho, Washington, British Columbia.
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North America: Columbia unglaciated and Oregon Lakes ecoregions.
  • Jelks, H.L., S.J. Walsh, N.M. Burkhead, S. Contreras-Balderas, E. Díaz-Pardo, D.A. Hendrickson, J. Lyons, N.E. Mandrak, F. McCormick, J.S. Nelson, S.P. Platania, B.A. Porter, C.B. Renaud, J.J. Schmitter-Soto, E.B. Taylor and M.L. Warren Jr. 2008 Conservation status of imperiled North American freshwater and diadromous fishes. Fisheries 33(8):372-407. (Ref. 81264)   http://www.fishbase.org/references/FBRefSummary.php?id=81264&speccode=11953 External link.
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Physical Description

Type Information

Holotype for Potamocottus bendirei Bean
Catalog Number: USNM 24196
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): C. Bendire
Year Collected: 1878
Locality: Rattlesnake Crk. Near Camp Harney Oregon, Oregon, United States, North America
  • Holotype: Bean, T. H. 1881. Proceedings of the United States National Museum. 4 (190): 27.
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Ecology

Habitat

Habitat Type: Freshwater

Comments: Habitat includes rocky riffles of headwaters and creeks (Page and Burr (2011). Of the mottled sculpin complex in the northern Harney Basin, "Cottus bendirei was the dominant or only species in isolated streams and upstream tributaries and C. hubbsi was the dominant or only species in the mainstem Silvies River" (Markle and Hill 2000).

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Habitat and Ecology

Habitat and Ecology
Habitat includes rocky riffles of headwaters and creeks (Page and Burr (2011). Of the mottled sculpin complex in the northern Harney Basin, "Cottus bendirei was the dominant or only species in isolated streams and upstream tributaries and C. hubbsi was the dominant or only species in the mainstem Silvies River" (Markle and Hill 2000).

Systems
  • Freshwater
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Environment

demersal; freshwater
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Migration

Non-Migrant: Yes. At least some populations of this species do not make significant seasonal migrations. Juvenile dispersal is not considered a migration.

Locally Migrant: No. No populations of this species make local extended movements (generally less than 200 km) at particular times of the year (e.g., to breeding or wintering grounds, to hibernation sites).

Locally Migrant: No. No populations of this species make annual migrations of over 200 km.

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Population Biology

Number of Occurrences

Note: For many non-migratory species, occurrences are roughly equivalent to populations.

Estimated Number of Occurrences: 21 - 80

Comments: This species is represented by a fairly large number of occurrences (subpopulations).

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Global Abundance

Unknown

Comments: Total adult population size is unknown, but this species is common in its small range.

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Conservation

Conservation Status

National NatureServe Conservation Status

Canada

Rounded National Status Rank: NNR - Unranked

United States

Rounded National Status Rank: N4 - Apparently Secure

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NatureServe Conservation Status

Rounded Global Status Rank: G4 - Apparently Secure

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IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2013

Assessor/s
NatureServe

Reviewer/s
Smith, K. & Darwall, W.R.T.

Contributor/s

Justification
Somewhat small extent of occurrence, but listed as Least Concern in view of the fairly large number number of subpopulations and locations, apparently large population size, and because the species probably is not declining fast enough to qualify for any of the threatened categories.
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Global Short Term Trend: Relatively stable (=10% change)

Comments: Trend over the past 10 years or three generations is uncertain but likely relatively stable.

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Population

Population
This species is represented by a fairly large number of occurrences (subpopulations).

Total adult population size is unknown, but this species is common in its small range.

Trend over the past 10 years or three generations is uncertain but likely relatively stable.

Population Trend
Stable
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Threats

Comments: Jelks et al. (2008) rated this species as "Vulnerable" based on present or threatened destruction, modification, or reduction of habitat or range, and a narrowly restricted range Detailed information on specific threats was not available for this assessment.

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Major Threats
Jelks et al. (2008) rated this species as "Vulnerable" based on present or threatened destruction, modification, or reduction of habitat or range, and a narrowly restricted range Detailed information on specific threats was not available for this assessment..
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Not Evaluated
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Management

Conservation Actions

Conservation Actions
Currently, this species is of relatively low conservation concern and does not require significant additional protection or major management, monitoring, or research action.
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Names and Taxonomy

Taxonomy

Comments: Recognized as a distinct species by Markle and Hill (2000), but further study is needed to clarify the taxonomic and geographic scope of this entity.

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