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El Niño Southern Oscillation and tuna in the western Pacific

Abstract

Nearly 70% of the world's annual tuna harvest, currently 3.2 million tonnes, comes from the Pacific Ocean. Skipjack tuna ( Katsuwonus pelamis ) dominate the catch. Although skipjack are distributed in the surface mixed layer throughout the equatorial and subtropical Pacific, catches are highest in the western equatorial Pacific warm pool, a region characterized by low primary productivity rates1 that has the warmest surface waters of the world's oceans (Fig. 1). Assessments of tuna stocks indicate that recent western Pacific skipjack catches approaching one million tonnes annually are sustainable2. The warm pool, which is fundamental to the El Niño Southern Oscillation (ENSO) and the Earth's climate in general3,4,5, must therefore also provide a habitat capable of supporting this highly productive tuna population. Here we show that apparent spatial shifts in the skipjack population are linked to large zonal displacements of the warm pool that occur during ENSO events5,6. This relationship can be used to predict (several months in advance) the region of highest skipjack abundance, within a fishing ground extending over 6,000 km along the Equator.

a, In the first half of 1989 (La Niña period). b, In the first half of 1992 (El Niño period). The effect of ENSO on the location of the warm pool (SST > 28–29 °C) and the distribution of skipjack catch is clearly evident.

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Figure 2: Skipjack tuna CPUE of the United States purse seine fleet in the western equatorial Pacific.
Figure 3: Displacements of tagged skipjack tuna.

References

  1. Longhurst, A., Sathyendranath, S., Platt, T. & Caverhill, C. An estimate of global primary production in the ocean from satellite radiometer data. J. Plankton Res. 17, 1245–1271 (1995).

    Google Scholar 

  2. Kleiber, P., Argue, A. W. & Kearney, R. E. Assessment of Pacific skipjack tuna ( Katsuwonus pelamis ) resources by estimating standing stock and components of population turnover from tagging data. Can. J. Fish. Aquat. Sci. 44, 1122–1134 (1987).

    Google Scholar 

  3. McPhaden, M. J. & Picaut, J. El Niño-Southern Oscillation displacements of the Western Equatorial Pacific warm pool. Science 50, 1385–1388 (1990).

    Google Scholar 

  4. Jin, F. F. Tropical ocean–atmosphere interaction, the Pacific cold tongue, and the El Niño–Southern Oscillation. Science 274, 76–78 (1996).

    Google Scholar 

  5. Picaut, J., Ioualalen, M., Menkes, C., Delcroix, T. & McPhaden, M. J. Mechanism of the zonal displacement of the Pacific warm pool: implications for ENSO. Science 274, 1486–1489 (1996).

    Google Scholar 

  6. Picaut, J. & Delcroix, T. Equatorial wave sequence associated with warm pool displacement during the 1986–1989 El Niño–La Niña. J. Geophys. Res. 100, 18393–18408 (1995).

    Google Scholar 

  7. Kuroda, Y. & McPhaden, M. J. Variability in the Western Equatorial Pacific Ocean during Japanese Pacific climate study cruises in 1989 and 1990. J. Geophys. Res. 98, 4747–4759 (1993).

    Google Scholar 

  8. Eldin, G., Rodier, M. & Radenac, M.-H. Physical and nutrient variability in the upper equatorial Pacific associated with westerly wind forcing and wave activity in October 1994. Deep Sea Res. (in the press).

  9. Legeckis, R. Long waves in the eastern equatorial Pacific ocean: a view from a geostationary satellite. Science 197, 1179–1181 (1977).

    Google Scholar 

  10. Yamamoto, T. & Nishizawa, S. Small-scale zooplankton aggregations at the front of a Kuroshio warm-core ring. Deep Sea Res. 33, 1729–1740 (1986).

    Google Scholar 

  11. Yoder, J. A., Ackleson, S. G., Barber, R. T., Flament, P. & Balch, W. M. Aline in the sea. Nature 371, 689–692 (1994).

    ADS  Article  Google Scholar 

  12. Power, J. H. Simulations of the effect of advective–diffusive processes on observations of plankton abundance and population rates. J. Plankton Res. 18, 1881–1896 (1996).

    Google Scholar 

  13. Flament, P., Kennan, S. C., Knox, R. A., Niiler, P. P. & Bernstein, R. L. The three-dimensional structure of an upper ocean vortex in the tropical Pacific ocean. Nature 383, 610–613 (1996).

    ADS  CAS  Article  Google Scholar 

  14. Laurs, R. M., Fiedler, P. C. & Montgomery, D. R. Albacore tuna catch distributions relative to environmental features observed from satellites. Deep Sea Res. 31, 1085–1099 (1984).

    Google Scholar 

  15. Fiedler, P. C. & Bernard, H. J. Tuna aggregation and feeding near fronts observed in satellite imagery. Continent. Shelf Res. 7, 871–881 (1987).

    Google Scholar 

  16. Richards, L. J. & Schnute, J. T. An experimental and statistical approach to the question: is CPUE an index of abundance? Can. J. Fish. Aquat. Sci. 43, 1214–1227 (1986).

    Google Scholar 

  17. Chen, W. Y. Assessment of Southern Oscillation sea level pressure indices. Month. Weath. Rev. 110, 800–807 (1982).

    Google Scholar 

  18. Cane, M. A., Zebiak, S. E. & Dolan, S. C. Experimental forecasts of El Niño. Nature 321, 827–832 (1986).

    ADS  Article  Google Scholar 

  19. Barnett, T. P. et al. On the prediction of the El Niño of 1986–87. Science 241, 192–196 (1988).

    Google Scholar 

  20. Chen, D., Zebiak, S., Busalacchi, A. J. & Cane, M. A. An improved procedure for El Niño forecasting: implications for predictability. Science 269, 1699–1702 (1995).

    Google Scholar 

  21. Chavez, F. P. & Barber, R. T. An estimate of new production in the equatorial Pacific. Deep Sea Res. 34, 1229–1243 (1987).

    Google Scholar 

  22. Sharp, G. D. & Dizon, A. E. (ed.) The Physiological Ecology of Tunas (Academic, San Diego, 1978).

    Google Scholar 

  23. Dragovitch, A. The food of skipjack and yellowfin tunas in the Atlantic ocean. Fish. Bull. US 70, 1087–1110 (1970).

    Google Scholar 

  24. Roger, C. & Grandperrin, R. Pelagic food webs in the tropical Pacific. Limnol. Oceanogr. 21, 731–735 (1976).

    Google Scholar 

  25. Roger, C. The plankton of the tropical western Indian ocean as a biomass indirectly supporting surface tunas (yellowfin, Thunnus albacares and skipjack, Katsuwonus pelamis ). Environ. Biol. Fish. 39, 161–172 (1994).

    Google Scholar 

  26. Vinogradov, M. E. in Analysis of Marine Ecosystems (ed. Longhurst, A. R.) (Academic, San Diego, 1981).

    Google Scholar 

  27. Hansen, D. V. & Swenson, M. S. Mixed layer circulation during EqPac and some thermochemical implications for the equatorial cold tongue. Deep Sea Res. 43, 707–724 (1996).

    Google Scholar 

  28. Piontkovski, S. A. & Williams, R. Multiscale variability of tropical ocean zooplankton biomass. ICES J. Mar. Sci. 52, 643–656 (1995).

    Google Scholar 

  29. Eckman, J. E. Modelling physical–biological coupling in the ocean: the U.S. GLOBEC Program. Deep Sea Res. 41, 1–5 (1994).

    Google Scholar 

  30. Hampton, J. Estimates of tag-reporting and tag-shedding rates in a large-scale tuna tagging experiments in the western tropical Pacific Ocean. Fish. Bull. US 95, 68–79 (1997).

    Google Scholar 

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Acknowledgements

We thank colleagues who provided data used in this study, particularly J. Joseph, R. Allen and M. Hinton for providing catch data for eastern Pacific tuna fisheries, and R. Grandperrin, J.-M. André and K. Bigelow for comments. This work was supported by the European Union-funded South Pacific Regional Tuna Resource Assessment and Monitoring Project of the Oceanic Fisheries Programme of the South Pacific Commission.

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  1. Correspondence and requests for materials should be addressed to P.L.

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    Correspondence to P. Lehodey.

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    Lehodey, P., Bertignac, M., Hampton, J. et al. El Niño Southern Oscillation and tuna in the western Pacific. Nature 389, 715–718 (1997). https://doi.org/10.1038/39575

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