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Fishery-seal interactions in Irish waters: Current perspectives and future research priorities

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  • Cronin, M.
  • Jessopp, M.
  • Houle, J.
  • Reid, D.

Abstract

Interactions between seals and the fishing industry are an on-going problem in Ireland and indeed globally across the range of most seal species. These interactions occur at both the operational (seal damage to catches and fishing gear) and biological (competition for shared resources) level. With declines in fish stocks there has been increased interest in the extent of competition for resources between commercial fisheries and seals. High levels of seal damage perceived by the fishing industry has led to frequent calls for seal culls, highlighting the significance of the problem. However, the scale of interaction between seals and commercial fishing and aquaculture in Ireland heretofore remained unclear. A comprehensive review of existing data, augmented with data from key stakeholders on the current state of play is presented to provide a realistic and representative account of the situation. This suggests that seal interactions with commercial fisheries in Ireland are most significant in inshore (<12 nautical miles from shore) static-net (or passive) fisheries (e.g. gill/tangle nets) and have increased following the driftnet ban in 2006, which suggests displacement of seal interactions from salmon to other fisheries. The industry highlighted pollack, angler fish, cod, and turbot fisheries as the main inshore fisheries currently impacted by operational damage to gear and catch by seals. Seal damage to line-caught salmon continues, with industry feedback suggesting large geographical variation in the range of damage levels reported. Salmon farming installations are also increasingly being targeted by seals, with significant losses due to seal depredation being reported. In the absence of robust data on seal depredation, the extent to which changes in fishing gear and practices have reduced damage levels, or resulted in displacement of seal foraging effort, is unknown. Recommendations are made to suggest how research efforts should be focused to address critical data gaps identified in the study.

Suggested Citation

  • Cronin, M. & Jessopp, M. & Houle, J. & Reid, D., 2014. "Fishery-seal interactions in Irish waters: Current perspectives and future research priorities," Marine Policy, Elsevier, vol. 44(C), pages 120-130.
    • Handle: RePEc:eee:marpol:v:44:y:2014:i:c:p:120-130
    DOI: 10.1016/j.marpol.2013.08.015
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    References listed on IDEAS

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    1. Cooke, Justin & Leaper, Russell & Wade, Paul & Lavigne, David & Taylor, Barbara, 2012. "Management rules for marine mammal populations: A response to Lonergan," Marine Policy, Elsevier, vol. 36(2), pages 389-392.
    2. Kenneth T. Frank & Brian Petrie & Jonathan A. D. Fisher & William C. Leggett, 2011. "Transient dynamics of an altered large marine ecosystem," Nature, Nature, vol. 477(7362), pages 86-89, September.
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    Cited by:

    1. Torbjörn Jansson & Staffan Waldo, 2022. "Managing Marine Mammals and Fisheries: A Calibrated Programming Model for the Seal-Fishery Interaction in Sweden," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 81(3), pages 501-530, March.
    2. Ocampo Reinaldo, Matías & Milessi, Andrés C. & Romero, María Alejandra & Crespo, Enrique & Wolff, Matthias & González, Raúl A., 2016. "Assessing the effects of demersal fishing and conservation strategies of marine mammals over a Patagonian food web," Ecological Modelling, Elsevier, vol. 331(C), pages 31-43.

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