Biological Decision Rules for the Assessment and Management of Directed Fisheries on Pandalus Hypsinotus, Humpback Shrimp

Biological Decision Rules for the Assessment and Management of Directed Fisheries on Pandalus Hypsinotus, Humpback Shrimp

Microform - 2002
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This paper examines options for assessing & managing recruitment overfishing in existing & new commercial humpback shrimp fisheries in British Columbia. The biological parameters used in this examination are based on a study of a humpback shrimp population in Drury Inlet that was surveyed in November 2001 & March 2002 with trawl & trap fishing gear. In addition, by-catch issues associated with habitat and different gear types used in targeted fisheries are examined. Aspects of humpback shrimp biology important in this review include estimates of age structure, sexual condition, fecundity, and natural mortality. Using the information from the Drury Inlet study, three options for assessing & managing overfishing are discussed: a fixed harvest rate model based on fishery independent shrimp biomass information; a fixed harvest rate model based on fishery-dependent catch per unit effort information; and a fixed escapement model based on egg production information. Recommendations are provided on the conservative decision rules associated with these management options, on by-catch in the two fishing options, and on a process for determining humpback shrimp fishing areas where these assessment & management options should be implemented.
Publisher: Ottawa : Fisheries & Oceans Canada, Science, Canadian Science Advisory Secretariat, 2002
Description: 59 p. : ill
Branch Call Number: MF BC-DOC 103-07455

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