Blue shark (Atlantic and Pacific populations) COSEWIC assessment and status report: chapter 4
Lists of Figures, Tables and Appendices
List of Figures
- Figure 1: Blue Shark (Prionace glauca)
- Figure 2: Global Distribution of Blue Shark
- Figure 3: Distribution of Blue Sharks in Canada’s Atlantic Region Based on All Known Commercial Catch Records Between 1986-2004
- Figure 4: Blue Shark Catch Location by Season Observed by the International Observer Program on Canadian Vessels Fishing Swordfish or Tuna Between 1986-2001
- Figure 5: Distribution of Blue Shark Catch Off British Columbia Based on Records from all Commercial Fisheries Between 1996-2004 (23.5 T Visible)
- Figure 6: Catch Location of Blue Sharks (N=170) in the International Pacific Halibut Commission Set Surveys in Area 2B Between 1998-2004
- Figure 7: Distribution of Blue Shark Caught by British Columbia’s Commercial Hook and Line Fleet by Season Between 1998-2004
- Figure 8: Length Frequency Distributions of Blue Sharks Examined at Shark Derbies and Measured by Observers in the Commercial Catch on the Scotian Shelf Between 1993-2003 Over the Same Range of Months and Years
- Figure 9: Movements of Blue Sharks A.) Tagged in Canada or B.) Recaptured in Canada Between 1971-2002 Under the NMFS Tagging Program
- Figure 10: Total Catch by Source for Blue Sharks Caught in Atlantic Canadian Waters
- Figure 11: Trend in Effort for the North and South Atlantic Longline Fleet (1956-1997)
- Figure 12: Distribution of Blue Shark Catches Between 1996-2004 in Commercial (A) Groundfish Trawl and (B) Hook and Line Fisheries
- Figure 13: Reported Catch of Blue Shark by British Columbia’s Hook and Line Fleet Between 1997-2004
- Figure 14: Indexed CPUE of Blue Shark in the North Atlantic from the Japanese Longline Fleet (JLL) and United States Longline Fleet (USLL) from 1971-2003
- Figure 15: Fit of the Age Structured Model for North Atlantic Blue Shark for Each of the Runs Considered Using Japanese (Above) and U.S. CPUE Data
- Figure 16: Map of the Northwest Atlantic Showing the Distribution of Effort in the U.S. Pelagic Longline Fishery Between 1986 and 2000
- Figure 17: Catch Rate of Blue Sharks in Three Assessment Regions in the Northwest Atlantic Expressed as a Mean and Median
- Figure 18: (A) Relative Abundance of Blue Sharks in the Entire West Atlantic Indicated by an Analysis of U.S. Commercial Longline Fishery Logbook (60% Decline) from 1986-2000; (B) Estimated Annual Rate of Change for Each Assessment Region and Total
- Figure 19: Standardized Commercial Catch Rate (Ln-Transformed Kg/Hook ± 95% CI) of Blue Shark in Canadian and Japanese Large Pelagic Fisheries Targeting Bigeye Tuna and Swordfish
- Figure 20: Standardized Commercial Catch Rate (Ln-Transformed Kg/Hook ± 95% CI) of Blue Shark by Region in Canadian and Japanese Large Pelagic Fisheries Targeting Bluefin Tuna On (A) the Scotian Shelf and (B) Waters Off Newfoundland
- Figure 21: Standardized Catch Rate (Sharks/Fisher, ± 95% CI) of Blue Sharks at Recreational Shark Derbies
- Figure 22: Trend in Mean Fork Length (± 95% CI) of Blue Sharks Caught in Fall and Winter in Japanese and Canadian Pelagic Longline Fisheries, as Observed by the International Observer Program
- Figure 23: Catch Rate of Blue Shark in IPHC Set Surveys in Area 2B (Canada) from 1998-2004
List of Tables
List of Appendices
- Appendix 1: Catch Per Unit of Effort of Blue Shark (Kg/1000 Hooks) Broken Down by Season (Quarter) in British Columbia’s Hook and Line Fleet
- Appendix 2: Polygon Area Used to Determine Extent of Occurrence in Pacific Waters. Polygon Surrounds All Known Catch Records from 1996-2004
- Appendix 3: Blue Shark Observations on Canada’s Pacific Coast from Groundfish Research Surveys Summarized from Published Data Reports and the Groundfish Biological (GFBIO) Database
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