Do surgically implanted radio transmitters alter the climbing ability of adult Pacific lamprey,Lampetra tridentata?

2012 ◽  
Vol 20 (4) ◽  
pp. 374-376 ◽  
Author(s):  
M. L. Moser ◽  
A. D. Jackson ◽  
T. Tsuzaki ◽  
P. S. Kemp
Keyword(s):  
Pacific Lamprey ◽  
Radio Transmitters ◽  
Climbing Ability ◽  
Lampetra Tridentata

Recent Colonization of a Major Salmon-Producing Lake in British Columbia by Pacific Lamprey (Lampetra tridentata)

1984 ◽  
Vol 41 (2) ◽  
pp. 278-285 ◽  
Author(s):  
Susan P. Farlinger ◽  
Richard J. Beamish
Keyword(s):  
British Columbia ◽  
Sockeye Salmon ◽  
Oncorhynchus Nerka ◽  
Nursery Area ◽  
Commercial Fishery ◽  
Rock Slide ◽  
Pacific Lamprey ◽  
Natural Lake ◽  
Lampetra Tridentata

Pacific lamprey (Lampetra tridentata) were first observed in Babine Lake, the largest natural lake wholly contained in British Columbia, in 1963 and are currently found along approximately 15% of the length of the lake near the outlet. The number of spawning adults in 1982 was estimated to be 7281. Since Babine Lake is a major nursery area for sockeye salmon (Oncorhynchus nerka), the colonization of this lake by a parasitic lamprey is of concern, particularly if the species can become nonanadromous. The colonization may be beneficial if a commercial fishery can be sustained and if the species does not begin to feed in freshwater. The reason for the recent colonization is unknown but it coincides with increased human manipulation of fishes and habitat, including the removal of a major rock slide, 65 km downstream of the lake.

Swimming Behaviour of Juvenile Pacific Lamprey, Lampetra tridentata

2006 ◽  
Vol 75 (2) ◽  
pp. 167-171 ◽  
Author(s):  
Dennis D. Dauble ◽  
Russell A. Moursund ◽  
Matthew D. Bleich
Keyword(s):  
Swimming Behaviour ◽  
Pacific Lamprey ◽  
Lampetra Tridentata

Variability in migration timing of adult Pacific lamprey (Lampetra tridentata) in the Columbia River, U.S.A.

2009 ◽  
Vol 85 (3) ◽  
pp. 253-264 ◽  
Author(s):  
Matthew L. Keefer ◽  
Mary. L. Moser ◽  
Charles T. Boggs ◽  
William R. Daigle ◽  
Christopher A. Peery
Keyword(s):  
Columbia River ◽  
Pacific Lamprey ◽  
Migration Timing ◽  
Lampetra Tridentata

Extinction of a Population of Anadromous Parasitic Lamprey, Lampetra tridentata, Upstream of an Impassable Dam

1989 ◽  
Vol 46 (3) ◽  
pp. 420-425 ◽  
Author(s):  
R. J. Beamish ◽  
T. G. Northcote
Keyword(s):  
British Columbia ◽  
Life History ◽  
Young Adult ◽  
Age Determination ◽  
Dam Construction ◽  
Pacific Lamprey ◽  
High Incidence ◽  
Adult Lamprey ◽  
Lampetra Tridentata

The construction of dams on the outlet of Elsie Lake, in British Columbia, prevented young adult Pacific lamprey (Lampetra tridentata) from going to sea and adult lamprey from spawning above the dams. This resulted in a high incidence of lamprey attacks on resident trout that was initially interpreted as indicating that the lamprey population was landlocked. This study showed that a landlocked population of lamprey was not established. The attacks on fish occurred for only a brief period each year. Attacks on trout stopped approximately 7 yr after dam construction. Because this was the average estimated age when ammocoetes metamorphosed and scarred fish or ammocoetes were no longer found, we concluded that metamorphosed lamprey were unable to survive to maturity. The inability to establish a landlocked population indicated that the transition from an anadromous parasitic life history type to a freshwater parasitic life history type did not occur as quickly or as easily as previously suggested. The study also provided evidence that the statolith method of age determination may provide accurate ages.

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