Environmental Biology of Fishes

, Volume 58, Issue 1, pp 45–52

Growth, Natural Mortality, Length–weight Relationship, Maximum Length and Length-at-first-maturity of the Coelacanth Latimeria chalumnae

  • Rainer Froese
  • Maria Lourdes D. Palomares
Article

Abstract

Based on the re-interpretation of published data, the von Bertalanffy growth function parameters of the coelacanth, Latimeria chalumnae, are estimated as L=218 cm total length, s.e. 23; K=0.059 (year−1), s.e. 0.012; t0=−3.3 (year), s.e. 0.5, corresponding to a life span of 48 years. The length–weight relationship of the form W=a*TLb, with wet weight (W) in g and total length (TL) in cm, is estimated as a=0.0278, b=2.89, r2=0.893, n=87, range=42.5–183 cm TL. Using extreme value theory, the maximum length for female coelacanths is estimated as 199 cm TL (95% confidence interval=175–223 cm TL) and for males as 168 cm TL (95% confidence interval 155–180 cm TL). Based on data from seven females with embryos or mature eggs, the length-at-first-maturity for females is estimated to be about 150 cm TL, corresponding to an age of about 16 years. Based on the value of t0=−3.3 years and on the presence of three scale rings found in a newborn coelacanth, the period of embryogenesis lasts for about three years, the longest known in vertebrates. The natural mortality rate is estimated at M=0.12. Population food consumption is found to be 1.4 times the existing biomass per year, and gross food conversion efficiency indicates that only 10% of the consumed food is utilized for somatic growth.

von Bertalanffy growth function life-span embryogenesis food consumption biomass 

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Copyright information

© Kluwer Academic Publishers 2000

Authors and Affiliations

  • Rainer Froese
    • 1
  • Maria Lourdes D. Palomares
    • 2
  1. 1.International Center for Living Aquatic Resources Management (ICLARM)Makati CityPhilippines
  2. 2.International Center for Living Aquatic Resources Management (ICLARM)Makati CityPhilippines

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