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Aspects of the Biology of the Porbeagle Shark (Lamna nasus) in the Bay of Fundy, Canada

Project Leads:

Dr. Steve Turnbull (University of New Brunswick – Saint John)

Sharks Unlimited – Alma, New Brunswick

St. Andrews Sport Fishing Co. – St. Andrews, New Brunswick

Project Status:

On-going

Type of Initiative:

Research

Project Location:

Bay of Fundy, Canada

For which Shark Species:

Porbeagle shark (Lamna nasus) primarily, also Thresher Shark (Alopias vulpinus) if caught.

Project Description:

Very little is known about the porbeagle shark and the thresher shark once they enter into the Bay of Fundy waters. The goals of the study are to gather preliminary information through recreational catch-and-release angling such as morphometrics, sex, environmental factors, and distribution. All sharks released are tagged with an ID tag and some with archival satellite popup tags. Results to date indicate a high post-release survival rate for sharks, possible different movement patterns for males and females within the Bay, and a high portion of caught sharks are large females. This project will be ongoing as long as the two organizations above continue to operate.

Previous Work:

Pratt, J.D.H., McAlpine D. F., Turnbull, S. D., and Emery, P. 2010. Prevalence, intensity, and site of infection of Ecthrogaleus coleoptratus ectoparasite on the porbeagle shark (Lamna nasus) in the Bay of Fundy, Canada. Crustaceana. 83:375-379.

Pratt, J.D.H. 2011. Aspects of the biology of the porbeagle shark (Lamna nasus) in the Upper Bay of Fundy determined through a recreational catch-and-release fishery. MSc Thesis. University of New Brunswick, Saint John, NB.

Contact Information:

Dr. Stephen Turnbull
Department of Biology
University of New Brunswick, Saint John
Saint John, New Brunswick
email: turnbull@unb.ca


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