Comparative study on Liza ramada (Risso, 1827) fishery status and management between Suez Canal Lakes, Egypt | ||||
| Egyptian Journal of Aquatic Biology and Fisheries | ||||
| Article 22, Volume 23, Issue 3, July 2019, Page 271-282 PDF (790.79 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejabf.2019.47937 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Sahar F. Mehanna; Asaar S. El-Sherbeny; Mohammad El-Mor ; Noha M. Eid
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| Abstract | ||||
| The population parameters of the thin lipped grey mullet Liza ramada in the Suez Canal lakes; Bitter and Timsah Lakes were investigated based on samples collected from landing sites of the Timsah and Bitter lakes during the period from December 2016 to November 2017. Based on the reading of scale‟s growth rings, the life span for L. ramada was 6 years at Bitter lakes and 7 years at Timsah Lake. The growth parameters (L∞ and K) of von Bertalanffy growth equation for combined sexes of L. ramada in Bitter Lakes were L∞ = 49.48 cm and K= 0.48/yr. while L. ramada population in Timsah Lake have L∞ = 52.2 cm and K= 0.46/yr. Mortality parameters (Z, M, F) were 2.54, 0.57 and 1.96 year-1 respectively at Bitter Lakes and the same parameters were 2.05, 0.53 and 1.52 year-1 respectively at Lake Timsah. The estimated exploitation ratios were 0.77 and 0.74 year-1 for L. ramada population at Bitter and Timsah Lakes respectively. Relative yield per recruit (Y/R)' model was used for evaluating L. ramada fishery status and the results obtained revealed that stock of L. ramada in both investigated areas; Bitter and Timsah Lakes were being overexploited and a suitable management measures should be applied for protecting these valuable fishery resources. | ||||
| Keywords | ||||
| Suez Canal; Lake Timsah; Bitter Lakes; Liza ramada; fishery status; Management | ||||
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