Expected Rate of Senescence and Agedependent Mortality in Fish


IT is usual in fisheries investigations to assume that the mortality of wild fish from natural causes does not rise significantly with age, and calculations on this basis give reliable results for most economically important species1–3. Age is sometimes invoked to explain the disappearance of fish4: at high ages a number of species show a decline in numbers which might be due to natural ageing5,6; but for long-lived species the inference is that few individuals, especially in fished populations, live long enough for the effect of age to be important.

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  1. 1

    Beverton, R. J. H., and Holt, S. J., Min. Agric. and Fish., Fishery Invest., Ser. II, 9 (London, 1957).

  2. 2

    Alm, G., Rep. Inst. Freshw. Res. Drottningholm, 40, 5 (1959).

  3. 3

    Parker, R. R., and Larkin, P. A., J. Fish. Res. Bd., 16, 721 (1959).

  4. 4

    Ricker, W. E., Trans. Amer. Fish. Soc., 77, 114 (1949).

  5. 5

    Gerking, S. B., Gerontologia, 1, 287 (1957).

  6. 6

    Gerking, S. B., Animal Life Spans: Ciba Symp. on Ageing, No. 5 (1959).

  7. 7

    Comfort, A., and Doljanski, F., Gerontologia, 2, 266 (1958).

  8. 8

    Comfort, A., Gerontologia, 4, 177 (1960).

  9. 9

    Comfort, A., Gerontologia (in the press).

  10. 10

    Jones, J. W., and Hynes, H. B. N., J. Anim. Ecol., 19, 59 (1950).

  11. 11

    Hickling, C. F., Fish. Invest., Ser. II, xiii, No. 2 (1933).

  12. 12

    Pycha, R. L., Calif. Fish Game, 42, 23 (1956).

  13. 13

    Milne, L., and Milne, M., Nat. Hist. N.Y., 67, 190 (1958).

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COMFORT, A. Expected Rate of Senescence and Agedependent Mortality in Fish. Nature 191, 822–823 (1961). https://doi.org/10.1038/191822b0

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