1 / 33

An update on Co-operative PSAT tagging results from SW Nova, PEI, N. Edge

An update on Co-operative PSAT tagging results from SW Nova, PEI, N. Edge. Large Pelagics Research Center, UNH Department of Fisheries & Oceans Canada. The objective of our Co-operative Tagging Program is to obtain the best possible scientific information on movements and behavior of ABFT.

minty
Download Presentation

An update on Co-operative PSAT tagging results from SW Nova, PEI, N. Edge

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. An update on Co-operative PSAT tagging results from SW Nova, PEI, N. Edge Large Pelagics Research Center, UNH Department of Fisheries & Oceans Canada

  2. The objective of our Co-operative Tagging Program is to obtain the best possible scientific information on movements and behavior of ABFT. This information is needed by US and Canadian fisheries managers to promote and maintain healthy and sustainable fisheries.

  3. Unanswered questions - Where, when, and how often do bluefin spawn? Where do they forage ? How do they get there and back? How many are there? Mixing rates of eastern and western fish?

  4. 1997 First generation Psat tags deployed 1998 We hosted PSAT tagging training for Canadian fishermen and DFO biologists In-water tagging techniques and tag set up developed by US fishermen partners

  5. MWT, Inc Psats are extremely reliable: 95- 100% reporting rates In over 150 deployments in New England and Canada, No mortalities of any bluefin tagged and released from hand gear.

  6. Shift in size classes, loss of giant fishery

  7. Photo by Francois Royer 2004 PSATtagging shifts SW Nova and PEI ‘05

  8. Deployments so far: 2005: 13 tags (Riverport, NS) 2006: 25 tags (2 Hell Hole, 23 Riverport) 2007: 10 tags (2 Malpeque, PEI, 8, Northern Edge, Georges

  9. ABFT movements from single locations: complex , highly variable

  10. BFT paths diverged widely before return to release location (SW Nova) 11 months later.

  11. PSAT tagging and juveniles: Tag a Tiny™ Tagging, biological sampling

  12. N = 32 XTags, due Sept 08

  13. IN addition to PSAT tagging Studies of body condition, forage base, age and growth

  14. Decline in condition of Atlantic bluefin tuna in the Gulf of Maine (Golet et al, 2007) grade C+ C or worse grade B grade B-

  15. IN addition to PSAT tagging Studies of body condition, forage base, age and growth Historical distributions and environmental conditions

  16. 1995 1994 1996

  17. IN addition to PSAT tagging Studies of body condition, forage base, age and growth Historical distributions and environmental conditions Reproduction and maturity schedules Connectivity of bluefin on the NW Shelf with Atlantic-wide distributions?

  18. Plans for the summer of 08 Deploy~ 35 Psats on giant bluefin in; N. Edge Hellhole Riverport PEI

  19. Collaborators and Fishermen Partners John Nielson, DFO, SW Nova Assoc: Eric Jacquard,Chris Mallone,Tim Nickerson, and FVs Fin Seeker and High Rider crews and Sam Ellsworth, Robert Conrad, St Margrets Bay Assoc, PEI: Ewen Clark and FV Pura Vida crews, Cookie Murray Funding & resources: NMFS, NOAA, SW Nova Assoc., LPRC

More Related