Farid Hemida

• Biodiversity Journal, 11 (4): 0853-0860

  Mohamed Daoudi, Benabdallah Bachir Bouiadjra, Jose Antonio Garcia Charton, Ibrahim El Khalil Behmene & Farid Hemida
  Growth and mortality of Conger conger (Linnaeus, 1758) (Pisces Congridae) in the Algerian basin
  https://doi.org/10.31396/Biodiv.Jour.2020.11.4.853.860

  ABSTRACT
  The growth and mortality of Conger conger (Linnaeus, 1758) (Pisces Congridae) were determined from 295 individuals, ranging from 38.9 to 174 cm total length, collected in the Algerian basin. The von Bertalanffy growth equation was established on the basis of the analysis of size structures by the ELEFAN I method, and is written as follows: L_t=224.4*(1-e^-0.2t). The height-weight relationship shows a higher allometry Wt=0.0003*Lt^3.4. The total (Z) and natural (M) mortality rates are 1.28 and 0.25 per year respectively. The exploitation rate E = 80% seems to show an overexploitation of the C. conger stock in the Algerian basin, for which we propose for this situation, management scenarios for this fishery, based on changes in fishing effort and variations in the size of the mesh of the trawl.

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