NF - Miller Lake Lamprey, Lampetra (Entosphenus) minima Conservation Plan 2005

Identification Information

Citation

Originator: ODFW

Publish Date: April 2005

Online Link: http://www.dfw.state.or.us/fish/lamprey_plan.pdf

BPA Project #:

Contact Information

Agency: Oregon Department of Fish and Wildlife

Name: Steve Jacobs

Job Position: Project Leader

Telephone: (541)757-4263 x261

E-Mail Address: steve.jacobs@oregonstate.edu

Description

Abstract: The Miller Lake Lamprey was believed extinct after a chemical treatment in 1958, targeting lamprey and tui chub, extirpated both from Miller Lake. The lamprey population was later recognized to be a distinct species, Lampetra minima (Bond and Kan 1973). It was the smallest lamprey species in the world (maturing at less than 4 in), and at that time was known only from Miller Lake, where it was extinct. In 1992, a small lamprey caught in the Upper Williamson River was identified as a Miller Lake Lamprey, and subsequent investigations have identified six local populations of this lamprey in two small subdrainages of the Upper Klamath Basin. Management strategies to preserve this species include: conserving appropriate habitat conditions and availability within the natural range of the Miller Lake Lamprey, addressing potential impacts from stocking streams with hatchery fish, reducing entrainment, and establishing connectivity within and between local populations. A man-made barrier built in 1959 still exists on Miller Creek. Originally created to prevent the re-establishment of lamprey in Miller Lake after the chemical treatment, the barrier currently prevents natural dispersal of the Miller Creek population and re-colonization of both extensive habitat in upper Miller Creek and Miller Lake itself. Removal of the barrier, which is in disrepair but continues to exclude lamprey, is feasible and will eliminate the only man-made feature obstructing natural connectivity within the Miller Lake drainage, the species’ type locality. This conservation plan is intended to provide guidance for management actions and conservation of the Miller Lake Lamprey.

Purpose:

Time Period of Content: 2005

Geographic Extent: Miller Lake, Upper Williamson River, Upper Klamath Basin

Status: Final

Use Constraints:

Format: PDF File

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Is a physical copy maintained for reference at Headquarters? Unknown