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Science Advice on Methods for Estimating Fishing Mortality for Porbeagle

Regional Peer Review - Maritimes Region

May 30-31, 2023
Dartmouth, NS

Chairperson: Lei E Harris


Porbeagle (Lamna nasus) is a species of mackerel shark in the family Lamnidae. Porbeagle in the Northwest Atlantic Ocean is considered one population. The Northwest Atlantic population ranges from northern Newfoundland and Labrador to New Jersey, and may extend as far south as South Carolina, with mature females ranging farther south to the Sargasso Sea. This species is widely distributed in the Canadian Atlantic, occurring in the Gulf of St. Lawrence, around Newfoundland and Labrador, on the Scotian Shelf, and in the Bay of Fundy. Most of the Northwest Atlantic population is found within Canadian waters at some point in its life history. Porbeagle was first assessed as Endangered by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) in May 2004, and was re-assessed as Endangered by COSEWIC in May 2014 (COSEWIC 2014). Porbeagle Sharks in the Northwest Atlantic are currently being considered for listing under the Canadian Species at Risk Act. Regardless of any listing decision, quantifying bycatch and total fishing mortality will be necessary to implement and monitor management measures for the species, inform fisheries management decisions, and to track recovery. Therefore, DFO Maritimes Region Species at Risk Program submitted a request to DFO Maritimes Region Science to estimate total annual fishing mortality of Porbeagle Sharks.


The specific objectives of this meeting to address the request for advice are as follows:

Expected Publications

Expected Participation



Participation to CSAS peer review meetings is by invitation only.

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