Estimating Total Mortality among Fisheries Affecting Porbeagle Shark (Lamna nasus) in Atlantic Canadian Waters. Research Document 2024/060 | Bycatch Management Information System (BMIS)

Year

2024

Species Groups

Sharks and Rays

Fishing Gear

Longline

Population Level Assessments

Risk Analysis - Open Category

Management Categories

At-Vessel and Post-Release Mortality

Bycatch Threats and Interaction Rates

Type

Document

Authors

Bowlby, Heather D

Wilson, Megan

Yin, Yihao

Miri, Carolyn M

Simpson, Mark R

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Citation

Bowlby HD, Wilson M, Yin Y, et al (2024) Estimating Total Mortality among Fisheries Affecting Porbeagle Shark (Lamna nasus) in Atlantic Canadian Waters. Research Document 2024/060

Abstract

Porbeagle Sharks (Lamna nasus) in the northwest Atlantic are currently being considered for listing under the Canadian Species at Risk Act (SARA), and Fisheries and Oceans Canada (DFO) Science was asked to estimate total annual fishing mortality. This would come from landings, and at-vessel mortality (AVM) or post-release mortality (PRM) of discards from fisheries in the Maritimes (MAR), Gulf (GULF), Quebec (QC) and Newfoundland and Labrador (NL) Regions. This evaluation considers 2015 to 2021, representing a time period following the closure of the commercial Porbeagle fishery.