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Genomic tools for management and conservation of Atlantic cod in a coastal marine protected area

Author

Listed:
  • Marion Sinclair-Waters

    (Dalhousie University [Halifax])

  • Paul Bentzen

    (Dalhousie University [Halifax])

  • Corey J. Morris

    (NWAFC - Northwest Atlantic Fisheries Centre - DFO - Fisheries and Oceans Canada)

  • Daniel E. Ruzzante

    (Dalhousie University [Halifax])

  • Matthew P. Kent

    (NMBU - Norwegian University of Life Sciences, Centre for Integrative Genetics - NMBU - Norwegian University of Life Sciences)

  • Sigbjørn Lien

    (NMBU - Norwegian University of Life Sciences, Centre for Integrative Genetics - NMBU - Norwegian University of Life Sciences)

  • Ian Bradbury

    (Dalhousie University [Halifax], NWAFC - Northwest Atlantic Fisheries Centre - DFO - Fisheries and Oceans Canada)

Abstract

Marine protected areas (MPAs) can serve as effective tools for the management and conservation of exploited marine species. The Gilbert Bay MPA in coastal Labrador was created to protect a genetically distinct population of Atlantic cod (Gadus morhua); however, decreases in abundance continue to occur potentially due to exploitation outside the MPA. We developed a single-nucleotide polymorphism (SNP) panel to identify Gilbert Bay cod in areas outside MPA boundaries where mixing with offshore cod occurs. In total, 361 individuals from Gilbert Bay, surrounding areas, and offshore were genotyped for 10 913 SNPs. Using F ST rankings and guided regularized random forest, we selected 23 SNPs that together generate 100% accuracy in individual assignment and accurately estimate the proportion of Gilbert Bay cod in fishery samples from sites outside MPA boundaries: on average, fishery samples included 17.3% Gilbert Bay cod. Estimates of effective population size for the Gilbert Bay population ranged from 655 to 1114. Our findings demonstrate the power of using genomic approaches for management of an exploited marine species and enhancing the design of MPAs.

Suggested Citation

  • Marion Sinclair-Waters & Paul Bentzen & Corey J. Morris & Daniel E. Ruzzante & Matthew P. Kent & Sigbjørn Lien & Ian Bradbury, 2018. "Genomic tools for management and conservation of Atlantic cod in a coastal marine protected area," Post-Print hal-04828052, HAL.
    • Handle: RePEc:hal:journl:hal-04828052
    DOI: 10.1139/cjfas-2017-0254
    Note: View the original document on HAL open archive server: https://hal.science/hal-04828052v1
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    References listed on IDEAS

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    2. Daniel Pauly & Villy Christensen & Sylvie Guénette & Tony J. Pitcher & U. Rashid Sumaila & Carl J. Walters & R. Watson & Dirk Zeller, 2002. "Towards sustainability in world fisheries," Nature, Nature, vol. 418(6898), pages 689-695, August.
    3. Morris, Corey J. & Green, John M., 2014. "MPA regulations should incorporate adaptive management—The case of Gilbert Bay Labrador Atlantic cod (Gadus morhua)," Marine Policy, Elsevier, vol. 49(C), pages 20-28.
    4. Bastiaan Star & Alexander J. Nederbragt & Sissel Jentoft & Unni Grimholt & Martin Malmstrøm & Tone F. Gregers & Trine B. Rounge & Jonas Paulsen & Monica H. Solbakken & Animesh Sharma & Ola F. Wetten &, 2011. "The genome sequence of Atlantic cod reveals a unique immune system," Nature, Nature, vol. 477(7363), pages 207-210, September.
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