Spatial extent, magnitude, and patterns of persistent organochlorine pollutants in Pacific herring (Clupea pallasi) populations in the Puget Sound (USA) and Strait of Georgia (Canada)

2008 ◽  
Vol 394 (2-3) ◽  
pp. 369-378 ◽  
Author(s):  
James E. West ◽  
Sandra M. O'Neill ◽  
Gina M. Ylitalo
Keyword(s):  
Puget Sound ◽  
Spatial Extent ◽  
Pacific Herring ◽  
Strait Of Georgia ◽  
Persistent Organochlorine ◽  
Clupea Pallasi ◽  
Organochlorine Pollutants

Comparison of Some Life History Characteristics of Pacific Herring (Clupea pallasi) from the Canadian Pacific Ocean and Beaufort Sea

1993 ◽  
Vol 50 (5) ◽  
pp. 964-971 ◽  
Author(s):  
R. W. Tanasichuk ◽  
A. H. Kristofferson ◽  
D. V. Gillman
Keyword(s):  
Pacific Ocean ◽  
Beaufort Sea ◽  
Larval Period ◽  
Pacific Herring ◽  
Strait Of Georgia ◽  
Clupea Pallasi ◽  
Surplus Energy ◽  
Ripe Ovary ◽  
Using Data ◽  
Sea Fish

We compared several growth and reproductive characteristics of Pacific herring (Clupea pallasi) from the Canadian Pacific Ocean and Beaufort Sea using data for 2310 fish gillnetted in the northern Strait of Georgia or near Tuktoyaktuk, N.W.T., over the 1985 spawning season. Weight-at-age was similar but Beaufort Sea fish were longer-at-age. Total weight-at-length was significantly greater for Strait of Georgia herring because their size-specific ripe ovary weights were 2.1 times greater. We attributed differences in growth and surplus energy allocation to adult instantaneous mortality rates being 1.8 times higher for Strait of Georgia herring. Size-specific ripe egg weight was 30% smaller in Beaufort Sea herring presumably because warmer sea temperatures over the larval period resulted in a higher mortality rate. Weight-specific fecundity was 1.5 times greater in Strait of Georgia fish. Ovarian growth rates near spawning were lower in Beaufort Sea herring because they mature in colder water.

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

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.

scholarly journals Recruitment forecasting using indices of young-of-the-year Pacific herring (Clupea pallasi) abundance in the Strait of Georgia (BC)

2009 ◽  
Vol 66 (8) ◽  
pp. 1681-1687 ◽  
Author(s):  
Jacob F. Schweigert ◽  
Douglas E. Hay ◽  
Thomas W. Therriault ◽  
Matthew Thompson ◽  
Carl W. Haegele
Keyword(s):  
Fishery Management ◽  
Relative Size ◽  
Qualitative Evaluation ◽  
Pacific Herring ◽  
Strait Of Georgia ◽  
Clupea Pallasi ◽  
Stock Biomass ◽  
Spawning Stock ◽  
Young Of The Year ◽  
The Relationship

Abstract Schweigert, J. F., Hay, D. E., Therriault, T. W., Thompson, M., and Haegele, C. W. 2009. Recruitment forecasting using indices of young-of-the-year Pacific herring (Clupea pallasi) abundance in the Strait of Georgia (BC). – ICES Journal of Marine Science, 66: 1681–1687. Within the Strait of Georgia (BC, Canada), recruitment of Pacific herring (Clupea pallasi) to the spawning stock at age 3 can be highly variable, and this component may compose a major portion of the spawning-stock biomass. Therefore, a reliable method of forecasting recruitment strength would be useful for determining total allowable catches for the fishery. We developed an empirical approach to forecasting recruitment from young-of-the-year (YOY) surveys using purse-seine sampling in late September and evaluate its predictive capability for estimating the relative size of a year class before it enters the fishery. For each year, we compared YOY catches-by-weight with the number of age-3 recruits derived from subsequent catch-at-age analyses. The relationship is positive but not statistically significant because of considerable annual variation in the estimates. However, it is worth noting that in years when YOY herring were least abundant, the resulting cohort also was low. Consequently, although the relationship may not be sufficiently precise for accurate recruitment forecasting, it can be used by fishery management for the qualitative evaluation of the likelihood of strong or weak returns in future seasons when setting quotas for the fishery.

Temporal and Spatial Genetic Structure among Some Pacific Herring Populations in Puget Sound and the Southern Strait of Georgia

2005 ◽  
Vol 134 (5) ◽  
pp. 1329-1341 ◽  
Author(s):  
Maureen P. Small ◽  
Janet L. Loxterman ◽  
Alice E. Frye ◽  
Jennifer F. Von Bargen ◽  
Cherril Bowman ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Spatial Genetic Structure ◽  
Puget Sound ◽  
Pacific Herring ◽  
Strait Of Georgia ◽  
Temporal And Spatial

Stable isotopic composition of otoliths in identification of spawning stocks of Pacific herring (Clupea pallasi) in Puget Sound

2001 ◽  
Vol 58 (11) ◽  
pp. 2113-2120 ◽  
Author(s):  
Y W Gao ◽  
S H Joner ◽  
G G Bargmann
Keyword(s):  
Isotopic Composition ◽  
Puget Sound ◽  
Pacific Herring ◽  
Sample Collection ◽  
Carbon Isotope Ratios ◽  
Clupea Pallasi ◽  
Oxygen And Carbon Isotope ◽  
Stable Isotopic ◽  
Powder Samples ◽  
Test Project

Otoliths of Pacific herring (Clupea pallasi) were collected from Puget Sound, Washington, and were analysed for oxygen and carbon isotope ratios (δ18O and δ13C). It was expected that if adult herring spawn at different localities with different δ18O and δ13C values, these isotope variations would constitute a natural tag that can be used to distinguish the herring spawning stocks. For a test project, we took aragonite powder samples from the surface of otolith nuclei and the second summer otolith rings, respectively. Isotopic composition of otolith nuclei from the Georgia Strait had lowest isotope values (from –8.2‰ to –2.0‰ VPDB (Vienna Peedee belemnite) in δ18O and –6.8‰ to –3.9‰ VPDB in δ13C), significantly different from those collected from two southern Puget Sound spawning grounds (from –3.9‰ to –0.9‰ VPDB in δ18O and –5.6‰ to –2.0‰ VPDB in δ13C). This isotopic identification is consistent with the biological observation and the actual sample collection. Stable isotopic information extracted from the summer otolith rings, in contrast, showed two types of herring in 1999 corresponding to the migratory and non-migratory stocks in Puget Sound. The rate of the two types of herring was about 70% versus 30%.

Sign in / Sign up

Export Citation Format

Share Document