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.

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

Modelling Pelagic Fish and Plankton Trophodynamics off Southwestern Vancouver Island, British Columbia

1994 ◽  
Vol 51 (8) ◽  
pp. 1737-1751 ◽  
Author(s):  
Clifford L. K. Robinson ◽  
Daniel M. Ware
Keyword(s):  
British Columbia ◽  
Chinook Salmon ◽  
Oncorhynchus Tshawytscha ◽  
Coastal Upwelling ◽  
Squalus Acanthias ◽  
Pacific Herring ◽  
Fish Production ◽  
Clupea Pallasi ◽  
Merluccius Productus ◽  
Arrival Timing

A trophodynamics model is used to estimate annual plankton and fish production for the southern British Columbia continental shelf during 1985–89. The model describes the feeding interactions among diatoms, copepods, euphausiids, juvenile and adult Pacific herring (Clupea pallasi), Pacific hake (Merluccius productus), chinook salmon (Oncorhynchus tshawytscha), and spiny dogfish (Squalus acanthias) and is forced by empirical seasonal patterns in upwelling, sea surface temperature, and solar radiation. The most important simulation results are that (1) there is an imbalance between fish consumption and euphausiid production during the summer upwelling season, (2) the biomass and arrival timing of migratory hake significantly influence plankton and fish production, and (3) about 11% of the 332 g C∙m−2∙yr−1 annual diatom production is transferred to copepods and euphausiids and 1.0% of the diatom production to fish, while 27.5% of the 11.9 g C∙m−2∙yr−1 euphausiid production is consumed by herring and hake. The high plankton and fish production on the southern British Columbia shelf is comparable with other productive coastal upwelling regions.

Factors linking Pacific herring (Clupea pallasi) productivity and the spring plankton bloom in the Strait of Georgia, British Columbia, Canada

2013 ◽  
Vol 115 ◽  
pp. 103-110 ◽  
Author(s):  
J.F. Schweigert ◽  
M. Thompson ◽  
C. Fort ◽  
D.E. Hay ◽  
T.W. Therriault ◽  
...  
Keyword(s):  
British Columbia ◽  
Pacific Herring ◽  
Strait Of Georgia ◽  
Clupea Pallasi ◽  
Plankton Bloom

scholarly journals Sighting rates and prey of Minke Whales (Balaenoptera acutorostrata) and other cetaceans off Cormorant Island, British Columbia

2019 ◽  
Vol 133 (2) ◽  
pp. 144
Author(s):  
Jared R. Towers ◽  
Christie J. McMillan ◽  
Rebecca S. Piercey
Keyword(s):  
British Columbia ◽  
Pacific Herring ◽  
Balaenoptera Acutorostrata ◽  
Sand Lance ◽  
Clupea Pallasi ◽  
Use Patterns ◽  
Minke Whales ◽  
Ammodytes Personatus ◽  
Pacific Sand Lance ◽  
Lunge Feeding

From June to August 2012, we conducted over 500 h of visual surveys from Cormorant Island, British Columbia, to determine behaviour and habitat use patterns of nearby cetaceans. Seven species were documented, but Minke Whales (Balaenoptera acutorostrata) were by far the most common and were observed lunge feeding at the surface on 15 occasions. In addition, this species was documented surface lunge feeding on Pacific Herring (Clupea pallasi) and Pacific Sand Lance (Ammodytes personatus) on 32 occasions during vessel-based cetacean surveys around Cormorant Island between 2010 and 2014. Although Minke Whales are relatively uncommon in British Columbia, these results indicate that they can regularly be found in specific feeding areas during the summer.

Offshore Distribution of Pacific Herring (Clupea pallasi) on Basis of Records from Fur Seal Stomachs

1971 ◽  
Vol 28 (10) ◽  
pp. 1663-1665
Author(s):  
F. H. C. Taylor
Keyword(s):  
British Columbia ◽  
Continental Shelf ◽  
Columbia River ◽  
Callorhinus Ursinus ◽  
Pacific Herring ◽  
Clupea Pallasi ◽  
Barkley Sound ◽  
Fur Seal

An examination of stomachs of fur seal (Callorhinus ursinus) taken off the coast of southern British Columbia and Washington from 1958 to 1969 indicated that Pacific herring (Clupea pallasi) were confined mainly to the continental shelf. Herring were most numerous in fur seal stomachs off Barkley Sound. Few occurred north of Cape Cook or from Cape Flattery south to the Columbia River. None were found from seals taken near the Cobb Sea-mount.

The Fecundity Of Pacific Herring (Clupea pallasi) in British Columbia Coastal Waters

1958 ◽  
Vol 15 (3) ◽  
pp. 313-330 ◽  
Author(s):  
Fuzuko Nagasaki
Keyword(s):  
Growth Rate ◽  
British Columbia ◽  
Body Length ◽  
Coastal Waters ◽  
Early Spring ◽  
Pacific Herring ◽  
Clupea Pallasi ◽  
Relationship Of ◽  
The Relationship

The fecundity of Pacific herring was investigated from a collection of 600 ovaries gathered from various localities along the British Columbia coast during the winter and early spring of 1954–55. It was found that fecundity depended mainly on body length and to a lesser extent on age, independently of its effect on body length. Certain differences in fecundity, found between herring from various localities when die relationship of fecundity to body length was considered, were not found when the relationship between fecundity, body length and age was considered. These differences were attributed to differences in growth rate. Fecundity of herring of same body length and the same age was found to be significantly higher in northern British Columbia than in southern.

Tagging of Pacific herring Clupea pallasi from 1936–1992: a review with comments on homing, geographic fidelity, and straying

2001 ◽  
Vol 58 (7) ◽  
pp. 1356-1370
Author(s):  
D E Hay ◽  
P B McCarter ◽  
K S Daniel
Keyword(s):  
British Columbia ◽  
Geographic Area ◽  
Coastal Areas ◽  
High Fidelity ◽  
Pacific Herring ◽  
Biological Processes ◽  
Electronic Database ◽  
Strait Of Georgia ◽  
Clupea Pallasi ◽  
Small Areas

Nearly 1.6 million tagged herring (Clupea pallasi) were released in two separate programs (1936–1967 and 1979–1992) in British Columbia. Several thousand tags were released in each of 955 release sessions. Over 85% of the release sessions had subsequent recoveries. Almost 43 000 tags were recovered over all years. We re-assembled the tagging data into an electronic database, geo-referenced all tag release and recovery data, analysed spatial movements, and estimated straying and fidelity rates. The analyses do not wholly support the conclusions of previous work indicating high homing rates to local coastal areas. Estimates of fidelity, defined as the proportion of tags recovered in the same area as released, varied with the size of the geographic area used in the analyses. Fidelity rates are high for large areas, such as the Strait of Georgia (~10 000 km2), but lower for small geographical areas, such as inlets or bays (~100 km2). High fidelity is not necessarily evidence for "homing." Homing and fidelity are different biological processes and tagging cannot necessarily distinguish between them. Although fidelity rates for small areas are generally low, there are exceptions that may be evidence for the existence of biologically distinct populations in certain areas.

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.

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