Initiatives
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Population Dynamics of Spiny Dogfish (Squalus acanthias)

Project Lead:

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

Project Status:

In Progress

Type of Initiative:

Stock Assessment

Project Location:

East coast of North America, including Atlantic Canada

For which Shark Species:

Spiny dogfish (Squalus acanthias)

Project Description:

Although spiny dogfish are fished commercially by Canadian fishers, the current catch quota is not scientifically based. Their high abundance in Canadian waters might make it seem that catches could be very large; however the long lifespan and slow growth rate of dogfish makes them very sensitive to overfishing. Calculation of sustainable catch limits for dogfish is complicated by the fact that the population in the northwest Atlantic extends from Florida in the U.S. to southern Newfoundland, with migration between Canadian and American waters. Our current research is designed to produce a detailed population model and stock assessment which can be used as the basis for a sustainable dogfish fishery in both countries, and which properly takes into account the transboundary migration and mixing.

Previous Work:

Campana, S. E., Joyce, W., and Kulka, D. W. 2009. Growth and reproduction of spiny dogfish off the eastern coast of Canada, including inferences on stock structure. pp. 195-208. In: Gallucci, V. F., McFarlane, G. A., and Bargmann, G. G. [eds]. Biology and management of dogfish sharks. American Fisheries Society. Bethesda, Maryland. pdf

Wallace, S. S., McFarlane, G. A., Campana, S. E., and King, J. R. 2009. Status of spiny dogfish in Atlantic and Pacific Canada. pp. 313-334. In: Gallucci, V. F., McFarlane, G. A., and Bargmann, G. G. [eds]. Biology and management of dogfish sharks. American Fisheries Society. Bethesda, Maryland. pdf

Campana, S.E., A.J.F. Gibson, L. Marks, W. Joyce, R. Rulifson and M. Dadswell. 2007. Stock structure, life history, fishery and abundance indices for spiny dogfish (Squalus acanthias) in Atlantic Canada. CSAS Res. Doc. 2007/089. 136 p. pdf

Campana, S.E., C. Jones, G.A. McFarlane and S. Myklevoll. 2006. Bomb dating and age validation using the spines of spiny dogfish (Squalus acanthias). Envir. Biol. Fish. 77:327-336. 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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