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Growth and mortality of Conger conger (Linnaeus, 1758) (Pisces Congridae) in the Algerian basin

Received 15.05.2020; accepted 01.10.2020; published online 22.11.2020 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: Lt=224.4*(1-e ). The heightweight relationship shows a higher allometry Wt=0.0003*Lt. 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.