Population Structure and Stock Identification of Steelhead Trout (Oncorhynchus mykiss) in British Columbia and the Columbia River Based on Microsatellite Variation

2004 ◽  
Vol 69 (1-4) ◽  
pp. 95-109 ◽  
Author(s):  
Terry D. Beacham ◽  
Khai D. Le ◽  
John R. Candy
Keyword(s):  
British Columbia ◽  
Population Structure ◽  
Oncorhynchus Mykiss ◽  
Columbia River ◽  
Stock Identification ◽  
Steelhead Trout ◽  
Microsatellite Variation

Population structure and stock identification of chum salmon (Oncorhynchus keta) from British Columbia determined with microsatellite DNA variation

2008 ◽  
Vol 86 (9) ◽  
pp. 1002-1014 ◽  
Author(s):  
Terry D. Beacham ◽  
Brian Spilsted ◽  
Khai D. Le ◽  
Michael Wetklo
Keyword(s):  
British Columbia ◽  
Population Structure ◽  
Chum Salmon ◽  
Oncorhynchus Keta ◽  
Stock Identification ◽  
Dna Variation ◽  
Coastal Fisheries ◽  
Chum Salmon Oncorhynchus Keta ◽  
Regional Estimates ◽  
Mixed Stock

Variation at 14 microsatellite loci was surveyed in 205 populations of chum salmon ( Oncorhynchus keta (Walbaum in Artedi, 1792)) from British Columbia to determine population structure and the possible application of microsatellites to estimate stock composition of chum salmon in mixed-stock fisheries. The genetic differentiation index (FST) over all populations and loci was 0.016, with individual locus values ranging from 0.006 to 0.059. Sixteen regional stocks were defined in British Columbia for stock identification applications. Analysis of simulated fishery samples suggested that accurate and precise regional estimates of stock composition should be produced when the microsatellites were used to estimate stock compositions. The main stocks that constitute the October 2007 samples of migrating chum salmon through Johnstone Strait in southern British Columbia were Fraser River (45%–64%), southern British Columbia mainland (22%), and east coast Vancouver Island (13%–28%), within the range of those to be expected in samples from Johnstone Strait. Microsatellites have the ability to provide fine-scale resolution of stock composition in British Columbia coastal fisheries.

Riverine and early ocean migration and mortality patterns of juvenile steelhead trout (Oncorhynchus mykiss) from the Cheakamus River, British Columbia

Hydrobiologia ◽  
2007 ◽  
Vol 582 (1) ◽  
pp. 55-65 ◽  
Author(s):  
Michael C. Melnychuk ◽  
David W. Welch ◽  
Carl J. Walters ◽  
Villy Christensen
Keyword(s):  
British Columbia ◽  
Oncorhynchus Mykiss ◽  
Steelhead Trout

Tagging along: association among individual Pacific herring (Clupea pallasi) revealed by tagging

2002 ◽  
Vol 59 (12) ◽  
pp. 1960-1968 ◽  
Author(s):  
D E Hay ◽  
S M McKinnell
Keyword(s):  
British Columbia ◽  
Oncorhynchus Mykiss ◽  
Statistical Method ◽  
Positive Association ◽  
Commercial Fisheries ◽  
Pacific Herring ◽  
Steelhead Trout ◽  
Similar Question ◽  
Clupea Pallasi ◽  
External Anchor

More than 570 000 Pacific herring (Clupea pallasi) were tagged with external anchor tags during 429 tag release sessions between 1979 and 1992. Individually numbered tags were released in quantities of 1000–2000 at a time and recovered from commercial fisheries. Often several tags were recovered at the same time and place, and some recoveries occurred as "matches", where two or more tags from a single release session were recovered together. We tested the hypothesis that the frequency of matching tag recoveries occurred by chance through random mixing of tagged herring before their recapture during fishing operations. The alternative is nonrandom, positive association among tagged individuals that persisted through time and during migrations. We used a statistical method developed to address a similar question in steelhead trout (Oncorhynchus mykiss). In separate tests, we examined tag recovery data from migratory stocks in five major regions of the British Columbia. The results indicate nonrandom association of herring for periods of 6 months to several years and through migrations over considerable distances.

Horizontal and Vertical Movements of Adult Steelhead Trout, Oncorhynchus mykiss, in the Dean and Fisher Channels, British Columbia

1990 ◽  
Vol 47 (10) ◽  
pp. 1963-1969 ◽  
Author(s):  
Gregory T. Ruggerone ◽  
Thomas P. Quinn ◽  
Ian A. McGregor ◽  
Thomas D. Wilkinson
Keyword(s):  
British Columbia ◽  
Oncorhynchus Mykiss ◽  
Median Time ◽  
Saline Water ◽  
Geometric Mean ◽  
River Mouth ◽  
Release Site ◽  
Steelhead Trout ◽  
Ultrasonic Telemetry ◽  
Vertical Movements

Horizontal and vertical movements of adults steelhead trout, Oncorhynchus mykiss, in the Dean and Fisher channels, British Columbia, were examined using radio and ultrasonic telemetry. Nineteen steelhead, captured by purse seine in 1987 and fitted with radio tags, averaged 17.2 ± 2.2 (SE) km/d to travel 96.4 km from the capture/release site to the Dean River mouth. Detailed movement patterns were assessed from six steelhead tracked for 224 h (21.0–49.8 h/fish) using ultrasonic tags in 1988. Gross and net travel rates of steelhead averaged 2.0 and 0.8 km/h, respectively, indicating considerable milling by the fish. Gross movement during daylight [Formula: see text] was twice that during the night [Formula: see text] and most movement at night was attributed to tidal currents. The steelhead swam primarily on the surface throughout the fjord, regardless of salinity and temperature stratification. Geometric mean depth was 1.6 m and the fish spent, on average, 72% of the time in the top 1 m (the warmest and least saline water available). Median time between dives to 5 m (near the halocline) was 9 min, although 14% of the surface intervals exceeded 1 h. These results are discussed in relation to several hypotheses regarding guidance mechanisms used by migrating fishes.

Population Structure of Columbia River Basin Chinook Salmon and Steelhead Trout

2004 ◽  
Vol 12 (2-3) ◽  
pp. 99-232 ◽  
Author(s):  
ERNEST L. BRANNON ◽  
MADISON S. POWELL ◽  
THOMAS P. QUINN ◽  
ANDRÉ TALBOT
Keyword(s):  
Population Structure ◽  
River Basin ◽  
Chinook Salmon ◽  
Columbia River ◽  
Columbia River Basin ◽  
Steelhead Trout
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