Temporal abundance and distribution of Octopus vulgaris (Cuvier, 1797) in the southern Atlantic waters of Morocco. | ||||
| Egyptian Journal of Aquatic Biology and Fisheries | ||||
| Article 24, Volume 25, Issue 6, November and December 2021, Page 313-326 PDF (707.04 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejabf.2021.212488 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| Brahim Oubahaouali et al. | ||||
| Abstract | ||||
| A study on the presence of Octopus vulgaris (Cuvier, 1797) in the southern Atlantic coastal waters of Morocco was carried out using data collected by boarding a cephalopod offshore trawler operating in this area by calculating the catch per unit effort (CPUE). The study showed a remarkable abundance of young Octopus individuals in terms of catches compared to large individuals over the entire study period, whether day or night, with lower yields during the nights. Winter trips produced the highest yields. The first days of resumption of fishing, (after a closed season) relating to each trip, showed very large quantities of catch except for the 2016 summer trip. Yields between the 2016 and 2017 summer trips remain relatively constant, while those of the winter trip of 2017/2018 experienced a very significant fall, with a quota achievement rate not reaching 49% compared to 81% achieved during the 2016/2017 winter trip. The results obtained by this study concluded that such management of Octopus vulgaris requires first and foremost good control of its temporal distribution based on the knowledge of the biological and physical phenomena, which interact and govern the abundance and the fluctuations of the stocks of this species. | ||||
| Keywords | ||||
| Abundance; CPUE; Distribution; Octopus vulgaris; Recruitment; Trawler | ||||
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