E3S Web Conf.
Volume 314, 2021The 6th edition of the International Conference on GIS and Applied Computing for Water Resources (WMAD21)
|Number of page(s)||7|
|Section||Climate Change & Natural Hazard Related to Water|
|Published online||26 October 2021|
Study of the mortality and exploitation parameters of Sander lucioperca (Linnaeus, 1758) in the Al Massira Reservoir
Environmental Engineering Team, Sciences and Techniques Faculty, Sultan Moulay Slimane University, Beni-Mellal, Morocco
2 International expert in aquaculture, Morocco
* Email: firstname.lastname@example.org
The mortality parameters and exploitation of Sander lucioperca were studied for the first time in the reservoir of Al-Massira Dam. These parameters were estimated based on sizefrequency data processed by FISAT II software. Parameters such as total mortality (Z), natural mortality (M), fishing mortality (F), and exploitation rate (E) obtained are respectively 1.71 year-1; 0.42 year-1; 1.29 year-1 and 0.75. This study thus shows that this species undergoes fishing mortality (1.29 year-1) much higher than natural mortality (M = 0.42 year-1). Furthermore, Sander lucioperca is found in a state of overexploitation with an exploitation rate (E = 0.75) higher than the estimated maximum exploitation rate (Emax = 0.65).
Key words: Sander lucioperca / Al-Massira Dam / Mortality / Exploitation
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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