Initiatives
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Post-Release Survival of Porbeagle from Commercial Longlines

Project Collaborators:

Dr. Steven Campana (DFO - Canadian Shark Research Lab)

Nova Scotia Swordfishermen’s Association

Project Status:

In Progress

Type of Initiative:

Research

Project Location:

Atlantic Canada

For which Shark Species:

Porbeagle shark (Lamna nasus)

Project Description:

Porbeagle sharks are highly migratory and spend substantial periods in Canadian waters before moving to international waters. ICCAT has approved new regulations supporting the live release of porbeagles caught in international waters, but the post-release survival of porbeagles has never been measured. We will soon be starting research to measure post-release survival in commercially-caught porbeagles using archival satellite popup tags. A better understanding of porbeagle post-release survival will improve the accuracy of both the Canadian and international stock assessments, and thus simplify the management and international governance of this species.

Previous Work:

Houlihan, J. P., Luo, J., Abascal, F. J., Campana, S. E., de Metrio, G., Dewar, H., Domeier, M. L., Howey, L. A., Lutcavage, M. E., Musyl, M. K., Neilson, J. D., Orbesen, E. S., Prince, E. D., and Rooker, J. R. 2011. Evaluating post-release behaviour modification in large pelagic fish deployed with pop-up satellite archival tags. ICES J. Mar. Sci. 68:880-889. pdf

Campana, S. E., Joyce, W. and Fowler, M. 2010. Subtropical pupping ground for a cold-water shark. Can. J. Fish. Aquat. Sci. 67:769-773. pdf

Campana, S. E., Joyce, W., and Manning, M. J. 2009. Bycatch and discard mortality in commercially caught blue sharks (Prionace glauca) assessed using archival satellite pop-up tags. Mar. Ecol. Prog. Ser. 387:241-253. pdf

Contact Information:

Dr. Steven Campana
Senior Scientist
Canadian Shark Research Laboratory
Bedford Institute of Oceanigraphy
Dartmouth, Nova Scotia
web: www.marinebiodiversity.ca/shark/english/index.htm
email: steven.campana@dfo-mpo.gc.ca

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