Guidance to derive and update fishing-related incidental mortality rates for Pacific salmon / David A. Patterson ... [et al].: Fs70-5/2017-011E-PDF

“Stock assessment methods for Pacific salmon (Oncorhynchus spp.) require estimates of total mortality to obtain accurate exploitation rate and stock size estimates. Total mortality includes both natural mortality and fishing-related mortality. The latter is composed of retained catch, plus any incidental mortality associated with fishing activities. Fishing-related incidental mortality (FRIM) includes mortality of fish that encounter fishing gear but are not captured (e.g., escape mortality), that are dead upon or die during capture but are not retained (e.g., on-board mortality), and that die after release (i.e., post-release mortality). However, several issues have been raised with respect to the information currently used to generate estimates of different types of FRIM, including the variability in the time course for monitoring mortality after a fishery encounter, the lack of fishery-specific information, and the need for an efficient process to incorporate new research as it becomes available. This research document is the second of two documents written in response to these knowledge gaps. The first research document reviewed and discussed the available literature pertaining to factors relevant to FRIM, compiled an evidence catalogue of FRIM estimates for anadromous salmonids, and generated key risk factor scoring tables that can be used to assess FRIM across different fisheries. This second research document uses the scientific information from the first to provide guidance and recommendations on a process to derive and/or update current estimates of FRIM rates for use in the assessment and management of Pacific salmon fisheries"--Introd., p. 1.

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Publication information
Department/Agency Canada. Department of Fisheries and Oceans.
Canada. Ecosystems and Oceans Science.
Canadian Science Advisory Secretariat.
Title Guidance to derive and update fishing-related incidental mortality rates for Pacific salmon / David A. Patterson ... [et al].
Series title Canadian Science Advisory Secretariat (CSAS), research document, 1919-5044 ; 2017/011, Pacific Region
Publication type Series - View Master Record
Language [English]
Format Electronic
Electronic document
Note(s) Cover title.
“May 2017.”
Title at head of French abstract: Orientation pour calculer et mettre à jour les taux de mortalité accidentelle du saumon du Pacifique liée à la pêche.
Includes bibliographical references (p. 50-53).
Includes abstract in French.
Publishing information Ottawa : Fisheries and Oceans Canada, Canadian Science Advisory Secretariat, 2017.
Author / Contributor Patterson, David A.(David Anthony),1969-
Description vii, 56 p. : col. charts, col. ill.
Catalogue number
  • Fs70-5/2017-011E-PDF
Subject terms Fisheries
Fisheries resources
Salt water fish
Fisheries management
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