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

@article{Keesing2017RateON,
  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},
  year={2017},
  volume={98},
  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… 
1 Citations
A natural constant predicts survival to maximum age
TLDR
It is shown that mean adult M can be approximated from the general law of decay if the average maximum age reached by individuals in a cohort is known, providing strong evidence that the evolutionary theories of ageing are the norm in natural populations.

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