Overview

Distribution

endemic to a single nation

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National Distribution

United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Year-round

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Global Range: (1000-200,000 square km (about 400-80,000 square miles)) Pacific versant in Idaho and Oregon (Hobbs, 1989).

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Range Description

This speceis is found in unpopulated areas of Idaho and Oregon in the USA.
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Physical Description

Diagnostic Description

Pigmented, eyes normal; rostrum narrow with margins converging to distinct acumen and with more than 3 pr lateral marginal spines, acarinate; postorbital ridges with posterior spines or tubercles; dorsal surface of palm with 2 conspicuous longitudinal clusters of setae, width of palm less than length of mesial margin.

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Ecology

Habitat

Habitat Type: Freshwater

Comments: It is found in lotic habitats. It is known from streams in unpopulated areas of Idaho and Oregon.

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Habitat and Ecology

Habitat and Ecology
This species is found in lotic habitats. It is known from streams in unpopulated areas of Idaho and Oregon.

Systems
  • Freshwater
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Migration

Non-Migrant: No. All populations of this species make significant seasonal migrations.

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.

Home range probably does not exceed 50 m.

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Trophic Strategy

Comments: No data; probably opportunistic.

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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: Unknown

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Global Abundance

Unknown

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Life History and Behavior

Cyclicity

Comments: No data.

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Reproduction

No data on amplexus or brooding.

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Conservation

Conservation Status

National NatureServe Conservation Status

United States

Rounded National Status Rank: N3 - Vulnerable

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NatureServe Conservation Status

Rounded Global Status Rank: G3 - Vulnerable

Reasons: This species occurs in unpopulated areas of Oregon and Idaho. Complete distribution is not known and threats and trends have not been assessed.

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IUCN Red List Assessment


Red List Category
DD
Data Deficient

Red List Criteria

Version
3.1

Year Assessed
2010

Assessor/s
Taylor, C.A., Schuster, G.A. & Cordeiro, J.

Reviewer/s
Collen, B. & Richman, N.

Contributor/s
Livingston, F., Livingston, F., Soulsby, A.-M., Batchelor, A., Dyer, E., Whitton, F., Milligan, H.T., Smith, J., Lutz, M.L., De Silva, R., McGuinness, S., Kasthala, G., Jopling, B., Sullivan, K. & Cryer, G.

Justification
Pacifastacus connectens has been assessed as Data Deficient. Sufficient distribution and population data are lacking for this species. Furthermore, it is possible that threats exist for this species as a result of its sensitivity to water quality. Therefore, further research needs to be carried out before a more accurate assessment can be made.
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Population

Population
There is no population information for this species.

Population Trend
Unknown
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Threats

Degree of Threat: Unknown

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Major Threats
There are no known threats to this species. The American Fisheries Society has assessed this species as Currently Stable in 1996 (Taylor et al. 2007). However, this classification was made over a decade ago and this species may have declined in this time.

This species is sensitive to stream quality, urbanization and agriculture activities, which impact the habitat requirements for this species.
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Management

Global Protection: Unknown whether any occurrences are appropriately protected and managed

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Conservation Actions

Conservation Actions
There are no species-specific conservation measures in place for this species. However, the range, abundance and potential threats to this species requires investigation to determine if it could be threatened. This species has been given a NatureServe status of G3G4, while the American Fisheries Service regards this species as Currently Stable (Taylor et al. 2007).
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Relevance to Humans and Ecosystems

Benefits

Economic Uses

Comments: No known economic value.

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