IDEAS home Printed from https://ideas.repec.org/a/eee/marpol/v54y2015icp86-97.html
   My bibliography  Save this article

Global patterns in the bycatch of sharks and rays

Author

Listed:
  • Oliver, Shelby
  • Braccini, Matias
  • Newman, Stephen J.
  • Harvey, Euan S.

Abstract

This study comprised a meta-analysis of elasmobranch bycatch in commercial longline, trawl, purse-seine and gillnet fisheries in order to obtain a general perspective of bycatch patterns, and to expose knowledge gaps and identify management and research priorities. Two bycatch ratios were considered: the number and the weight of elasmobranch bycatch relative to that of the target species captured. Patterns were determined through machine learning algorithms with gear type, oceanic region, habitat and the presence or absence of bycatch management measures as candidate predictors. There are considerable information gaps. Most of the current information on elasmobranch bycatch is for the North Atlantic, which is not where the greatest fishing pressure is exerted, so several fisheries were largely under-represented. Overall for sharks, gear type was the most important predictor with pelagic longline fisheries in the South Atlantic displaying the highest bycatch ratios. No patterns were found for ray bycatch ratios. For the fisheries considered in this study, pelagic longlines, and deep-sea and coastal trawl fisheries had the largest total annual shark and ray bycatch, respectively. Blue sharks (Prionace glauca, Carcharhinidae) dominated the total annual bycatch of longline fisheries. For other fishing gears, the annual species-specific bycatch composition varied across oceanic regions. Many of the fisheries with the largest elasmobranch bycatch operate over large spatial scales and often in international waters. International management, mitigation and cooperation are an essential component for the sustainability of elasmobranch bycatch species. Data collection systems and data availability are required at a global scale to improve assessments of elasmobranch bycatch and this should be a high priority for ongoing management and monitoring.

Suggested Citation

  • Oliver, Shelby & Braccini, Matias & Newman, Stephen J. & Harvey, Euan S., 2015. "Global patterns in the bycatch of sharks and rays," Marine Policy, Elsevier, vol. 54(C), pages 86-97.
  • Handle: RePEc:eee:marpol:v:54:y:2015:i:c:p:86-97
    DOI: 10.1016/j.marpol.2014.12.017
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0308597X14003546
    Download Restriction: Full text for ScienceDirect subscribers only

    File URL: https://libkey.io/10.1016/j.marpol.2014.12.017?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Davies, R.W.D. & Cripps, S.J. & Nickson, A. & Porter, G., 2009. "Defining and estimating global marine fisheries bycatch," Marine Policy, Elsevier, vol. 33(4), pages 661-672, July.
    2. Gilman, Eric L., 2011. "Bycatch governance and best practice mitigation technology in global tuna fisheries," Marine Policy, Elsevier, vol. 35(5), pages 590-609, September.
    3. Worm, Boris & Davis, Brendal & Kettemer, Lisa & Ward-Paige, Christine A. & Chapman, Demian & Heithaus, Michael R. & Kessel, Steven T. & Gruber, Samuel H., 2013. "Global catches, exploitation rates, and rebuilding options for sharks," Marine Policy, Elsevier, vol. 40(C), pages 194-204.
    4. Petter Johnsen, Jahn & Eliasen, Søren, 2011. "Solving complex fisheries management problems: What the EU can learn from the Nordic experiences of reduction of discards," Marine Policy, Elsevier, vol. 35(2), pages 130-139, March.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Brooke M D’Alberto & John K Carlson & Sebastián A Pardo & Colin A Simpfendorfer, 2019. "Population productivity of shovelnose rays: Inferring the potential for recovery," PLOS ONE, Public Library of Science, vol. 14(11), pages 1-24, November.
    2. Gareth L Jordaan & Jorge Santos & Johan C Groeneveld, 2020. "Shark discards in selective and mixed-species pelagic longline fisheries," PLOS ONE, Public Library of Science, vol. 15(8), pages 1-19, August.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Erhardt, Tobias & Weder, Rolf, 2020. "Shark hunting: On the vulnerability of resources with heterogeneous species," Resource and Energy Economics, Elsevier, vol. 61(C).
    2. Sybersma, Stacie, 2015. "Review of shark legislation in Canada as a conservation tool," Marine Policy, Elsevier, vol. 61(C), pages 121-126.
    3. Eric Gilman & Milani Chaloupka & Brett Wiedoff & Jeremy Willson, 2014. "Mitigating Seabird Bycatch during Hauling by Pelagic Longline Vessels," PLOS ONE, Public Library of Science, vol. 9(1), pages 1-12, January.
    4. Jordan S Goetze & Tim J Langlois & Joe McCarter & Colin A Simpfendorfer & Alec Hughes & Jacob Tingo Leve & Stacy D Jupiter, 2018. "Drivers of reef shark abundance and biomass in the Solomon Islands," PLOS ONE, Public Library of Science, vol. 13(7), pages 1-16, July.
    5. Andrew T Fields & Debra L Abercrombie & Rowena Eng & Kevin Feldheim & Demian D Chapman, 2015. "A Novel Mini-DNA Barcoding Assay to Identify Processed Fins from Internationally Protected Shark Species," PLOS ONE, Public Library of Science, vol. 10(2), pages 1-10, February.
    6. Mercedes Rosello & Juan Vilata & Dyhia Belhabib, 2021. "Atlantic Shortfin Mako: Chronicle of a Death Foretold?," Laws, MDPI, Open Access Journal, vol. 10(3), pages 1-12, June.
    7. Evans, K. & Young, J.W. & Nicol, S. & Kolody, D. & Allain, V. & Bell, J. & Brown, J.N. & Ganachaud, A. & Hobday, A.J. & Hunt, B. & Innes, J. & Gupta, A. Sen & van Sebille, E. & Kloser, R. & Patterson,, 2015. "Optimising fisheries management in relation to tuna catches in the western central Pacific Ocean: A review of research priorities and opportunities," Marine Policy, Elsevier, vol. 59(C), pages 94-104.
    8. Cláudia Fernandes, Ana & Pérez, Nélida & Prista, Nuno & Santos, Juan & Azevedo, Manuela, 2015. "Discards composition from Iberian trawl fleets," Marine Policy, Elsevier, vol. 53(C), pages 33-44.
    9. de Vos, B.I. & Döring, R. & Aranda, M. & Buisman, F.C. & Frangoudes, K. & Goti, L. & Macher, C. & Maravelias, C.D. & Murillas-Maza, A. & van der Valk, O. & Vasilakopoulos, P., 2016. "New modes of fisheries governance: Implementation of the landing obligation in four European countries," Marine Policy, Elsevier, vol. 64(C), pages 1-8.
    10. Mariana G Bender & Gustavo R Machado & Paulo José de Azevedo Silva & Sergio R Floeter & Cassiano Monteiro-Netto & Osmar J Luiz & Carlos E L Ferreira, 2014. "Local Ecological Knowledge and Scientific Data Reveal Overexploitation by Multigear Artisanal Fisheries in the Southwestern Atlantic," PLOS ONE, Public Library of Science, vol. 9(10), pages 1-9, October.
    11. Reis, G.G. & Heidemann, M.S. & Goes, H.A.A. & Molento, C.F.M., 2021. "Can radical innovation mitigate environmental and animal welfare misconduct in global value chains? The case of cell-based tuna," Technological Forecasting and Social Change, Elsevier, vol. 169(C).
    12. Humber, Frances & Andriamahefazafy, Mialy & Godley, Brendan John & Broderick, Annette Cameron, 2015. "Endangered, essential and exploited: How extant laws are not enough to protect marine megafauna in Madagascar," Marine Policy, Elsevier, vol. 60(C), pages 70-83.
    13. Fauconnet, Laurence & Rochet, Marie-Joëlle, 2016. "Fishing selectivity as an instrument to reach management objectives in an ecosystem approach to fisheries," Marine Policy, Elsevier, vol. 64(C), pages 46-54.
    14. Trenkel, Verena M. & Hintzen, Niels T. & Farnsworth, Keith D. & Olesen, Christian & Reid, David & Rindorf, Anna & Shephard, Samuel & Dickey-Collas, Mark, 2015. "Identifying marine pelagic ecosystem management objectives and indicators," Marine Policy, Elsevier, vol. 55(C), pages 23-32.
    15. Friedrich, Laura A. & Jefferson, Rebecca & Glegg, Gillian, 2014. "Public perceptions of sharks: Gathering support for shark conservation," Marine Policy, Elsevier, vol. 47(C), pages 1-7.
    16. Diego Cardeñosa & Andrew Fields & Debra Abercrombie & Kevin Feldheim & Stanley K H Shea & Demian D Chapman, 2017. "A multiplex PCR mini-barcode assay to identify processed shark products in the global trade," PLOS ONE, Public Library of Science, vol. 12(10), pages 1-9, October.
    17. Erhardt, Tobias & Weder, Rolf, 2015. "Shark Hunting: International Trade and the Imminent Extinction of Heterogeneous Species," Working papers 2015/07, Faculty of Business and Economics - University of Basel.
    18. Davies, Tim K. & Mees, Chris C. & Milner-Gulland, E.J., 2014. "The past, present and future use of drifting fish aggregating devices (FADs) in the Indian Ocean," Marine Policy, Elsevier, vol. 45(C), pages 163-170.
    19. Guanais, José Hugo Gondim & Medeiros, Rodrigo Pereira & McConney, Patrick A., 2015. "Designing a framework for addressing bycatch problems in Brazilian small-scale trawl fisheries," Marine Policy, Elsevier, vol. 51(C), pages 111-118.
    20. Sigurðardóttir, Sigríður & Stefánsdóttir, Elísabet Kemp & Condie, Harriet & Margeirsson, Sveinn & Catchpole, Thomas L. & Bellido, Jose M. & Eliasen, Søren Qvist & Goñi, Raquel & Madsen, Niels & Palial, 2015. "How can discards in European fisheries be mitigated? Strengths, weaknesses, opportunities and threats of potential mitigation methods," Marine Policy, Elsevier, vol. 51(C), pages 366-374.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:marpol:v:54:y:2015:i:c:p:86-97. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: . General contact details of provider: http://www.elsevier.com/locate/marpol .

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.elsevier.com/locate/marpol .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service hosted by the Research Division of the Federal Reserve Bank of St. Louis . RePEc uses bibliographic data supplied by the respective publishers.