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Growth and production of the venerid bivalve Eurhomalea exalbida in the Beagle Channel, Tierra del Fuego
Lomovasky, B.J.; Brey, T.; Morriconi, E.; Calvo, J. (2002). Growth and production of the venerid bivalve Eurhomalea exalbida in the Beagle Channel, Tierra del Fuego. J. Sea Res. 48(3): 209-216. dx.doi.org/10.1016/s1385-1101(02)00133-8
In: Journal of Sea Research. Elsevier/Netherlands Institute for Sea Research: Amsterdam; Den Burg. ISSN 1385-1101, more
Peer reviewed article  

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Keywords
    Biological production; Clams; Growth; Mortality; Production; Production; Production; Eurhomalea exalbida (Dillwyn, 1817) [WoRMS]; PSW, Argentina, Tierra del Fuego, Beagle Channel [Marine Regions]; PSW, Chile, Tierra del Fuego, Beagle Channel [Marine Regions]; Marine

Authors  Top 
  • Lomovasky, B.J., correspondent
  • Brey, T.
  • Morriconi, E.
  • Calvo, J.

Abstract
    Growth, mortality and productivity of the hard clam Eurhomalea exalbida from Ushuaia Bay, Beagle Channel, were investigated. The parameters of the von Bertalanffy growth function were estimated to be H = 74 mm, K = 0.18 y -1, t0 = 0.15 y. Maximum individual production amounted to 2.74 g shell-free wet mass (SFWM) at 49.5 mm shell height. Animals between 40 mm and 70 mm shell height contributed most to overall population somatic production P of 134 g SFWM m -2 y -1. Mean annual biomass B amounted to 1123 g SFWM m -2 y -1. Annual P/B ratio and mortality rate Z were estimated to be 0.12 y -1 and 0.14 y -1, respectively. Slow growth and low turnover make this population less suitable for sustainable commercial exploitation.

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