Population structure and fisheries characteristics of the striped red mullet Mullus surmuletus from Matrouh fishing area, Mediterranean Sea, Egypt | ||
| Egyptian Journal of Aquatic Biology and Fisheries | ||
| Article 43, Volume 26, Issue 3, May and June 2022, Pages 745-755 PDF (639.13 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejabf.2022.246450 | ||
| Authors | ||
| Eman M. Hassanien; Sahar F. Mehanna | ||
| Abstract | ||
| Population dynamic parameters of the striped red mullet, Mullus surmuletus caught by trammel nets operating in Matrouh fishing area, Mediterranean Sea, Egypt were studied. Samples (n = 1153) were collected between May 2020 and April 2021 and ranged from 9.1 to 30 cm in total length and from 15 to 325 g in weight. The length and weight relationship was W = 0.011 L3.028 with r² = 0.98. Growth parameters of the von Bertalanffy model were L∞ = 34.91 cm, K= 0.26 year-1 and t0 = -0.77 year. Estimates of total (Z), natural (M) and fishing (F) mortalities were 1.48, 0.55 and 0.93, respectively and the estimated exploitation ratio was 0.63 indicating that the resource is being overexploited in this area. The estimated length at first capture (Lc = 13.74 cm) was found to be less than the estimated length at first sexual maturity (Lm = 15.35 cm), indicating that this species didn’t have the chance to spawn at least once in the fishery before being fished. It’s our suggestion, that according to first-maturity length results, the minimum legal size MLS regulation should be revised to be at least above 16 cm. | ||
| Keywords | ||
| Age and growth; mortality; Mullus surmuletus; Matrouh; Mediterranean Sea; Egypt | ||
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