Rate of natural mortality in the sea star Archaster angulatus (Echinodermata: Asteroidea)

  title={Rate of natural mortality in the sea star Archaster angulatus (Echinodermata: Asteroidea)},
  author={John K. Keesing},
  journal={Journal of the Marine Biological Association of the United Kingdom},
  pages={1689 - 1693}
  • J. Keesing
  • Published 3 July 2017
  • Environmental Science
  • Journal of the Marine Biological Association of the United Kingdom
The population size structure from a total of 876 individuals, together with published values of growth rate, maximum size and size at age were used to estimate an instantaneous rate of natural mortality (M) of 0.46–0.59 year−1 in a population of the sea star Archaster angulatus from south-western Australia. Peak abundance (17%) of all animals sampled was 105–109 mm arm radius (means of 4.2–4.8 years of age) and only one per cent of sea stars are predicted to live beyond 8 years in the… 
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