Age, Growth and Mortality of Liza carinata Valenciennes, 1836 (Pisces: Mugilidae) in Bitter Lakes, Suez Canal, Egypt | ||||
| Egyptian Journal of Aquatic Biology and Fisheries | ||||
| Article 23, Volume 23, Issue 3, July 2019, Page 283-290 PDF (790.81 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejabf.2019.47938 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Sahar F. Mehanna; Asaar S. El-Sherbeny; Mohammad El-Mor ; Noha M. Eid
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| Abstract | ||||
| The longevity, growth and mortality parameters of keeled mullet Liza carinata population in the Bitter Lakes, Suez Canal, Egypt were estimated during the period from December 2016 to November 2017. The estimated length-weight relationship for combined sexes (♂♀) was W= 0.0177 L2.8115. The longevity of this species was estimated to be 4 years. The highest growth rate in length was recorded in the first year of life (66.35 %). Growth for both sexes was described by the von Bertalanffy equation as: Lt = 23.5 (1-e -0.42 (t+1.07)) for growth in length; Wt = 128 (1-e-0.42 (t+1.07))2.8 for growth in weight. Based on these growth parameters, the total mortality (Z) was estimated to be 2.56 y-1. The estimated values for natural mortality (M) and fishing mortality (F) were 0.51 y-1 and 2.05 y-1 respectively. The estimated value of the exploitation rate (E) was 0.8 y-1. All the results refers to that the L. carinata stock in the Bitter Lakes, Suez Canal suffer from high rates of fishing effort exceeding that gives maximum sustainable yield and consequently a depleted stock. | ||||
| Keywords | ||||
| Suez Canal; Bitter Lakes; Liza carinata; Population dynamics; Age; Growth; mortality | ||||
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