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Shark depredation in commercial and recreational fisheries

Authors
  • Mitchell, J. D.1, 2
  • McLean, D. L.2, 3
  • Collin, S. P.2, 3
  • Langlois, T. J.1, 2
  • 1 The University of Western Australia, School of Biological Sciences, 35 Stirling Highway, Crawley, Western Australia, 6009, Australia , Crawley (Australia)
  • 2 Indian Ocean Marine Research Centre, The UWA Oceans Institute, Cnr. of Fairway and Service Road 4, Crawley, Western Australia, 6009, Australia , Crawley (Australia)
  • 3 The University of Western Australia, Oceans Graduate School, 35 Stirling Highway, Crawley, Western Australia, 6009, Australia , Crawley (Australia)
Type
Published Article
Journal
Reviews in Fish Biology and Fisheries
Publisher
Springer-Verlag
Publication Date
Jul 18, 2018
Volume
28
Issue
4
Pages
715–748
Identifiers
DOI: 10.1007/s11160-018-9528-z
Source
Springer Nature
Keywords
License
Yellow

Abstract

Shark depredation, where a shark partially or completely consumes an animal caught by fishing gear before it can be retrieved to the fishing vessel, occurs in commercial and recreational fisheries worldwide, causing a range of negative biological and economic impacts. Despite this, it remains relatively understudied compared to other fisheries issues. This is the first review of the literature relating to shark depredation, which also includes an overview of the potential mechanisms underlying its occurrence and options for mitigation. Furthermore, this review highlights key research gaps that remain to be investigated, thereby providing impetus for future research. In total, 61 studies have been published between 1955 and 2018, which include information on shark depredation. These studies recorded quantitative rates of depredation between 0.9 and 26% in commercial and recreational fisheries and during research fishing, identified 27 shark species from seven families that were responsible for depredation and discussed potential factors influencing its occurrence. Information from research into bycatch mitigation and the testing of shark deterrent approaches and technologies is also presented, in the context of applying these approaches to the reduction of shark depredation. This review presents an holistic overview of shark depredation in fisheries globally and, in doing so, provides a central resource for fisheries researchers and managers focusing on this topic to stimulate further collaborative research on this important fisheries issue.

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