Shark catch in pelagic longline fisheries : a review of mitigation measures

Curran, Daniel S.

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Shark catch in pelagic longline fisheries : a review of mitigation measures

2014
By Curran, Daniel S.
Series: PIFSC working paper WP-14-006

Details

Personal Author:

Curran, Daniel S.
Corporate Authors:

Pacific Islands Fisheries Science Center (U.S.)
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; PIFSC (Pacific Islands Fisheries Science Center)
Description:

"Pelagic longline gear is used throughout the world's oceans to capture tuna and tuna-like species. Longline gear is typically deployed from a single vessel across many miles of ocean. The vessel deploys a single mainline that is periodically buoyed with floatation devices and thinner branchlines (with baited hooks) are then attached to the mainline between the floats...Within this simple framework, a variety of configurations and operational practices can be employed to specifically target different depths and species of fish...Although some longline fisheries capture sharks as commercially viable target species or as lowvalue incidental catch, the purpose of this review is to summarize studies that have viewed shark capture as unwanted bycatch (i.e., discards). This paper also reviews methods aimed to mitigate catch rates and post release mortality of sharks in fisheries that target tuna and tunalike species. Some of the research is on a single species, but most is on several of the most commonly encountered species or on species complexes"--Introduction.
Content Notes:

Daniel Curran.

"Issued 16 July 2014."

System requirements: Adobe Acrobat Reader.

Includes bibliographical references (pages 12-16).
Keywords:

Bycatches Bycatches (Fisheries) Equipment And Supplies Longlining (Fisheries) Mortality Prevention Sharks Tuna Fisheries Equipment And Supplies Tuna Fisheries
Series:

PIFSC working paper WP-14-006
Document Type:

Working Paper
Rights Information:

Public Domain
Compliance:

Library
Main Document Checksum:

urn:sha256:a9961d3461a76277bd522d97c9ee531a28b90e970efb617a0ec4c2d2b6194d4b
Download URL:

https://repository.library.noaa.gov/view/noaa/15379/noaa_15379_DS1.pdf
File Type:

[PDF - 520.13 KB ]

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