Age and growth patterns of the lizard fish, Saurida undosquamis (Richardson, 1848), from the Gulf of Suez, Red Sea, Egypt | ||||
| Al-Azhar Journal of Agricultural Research | ||||
| Volume 50, Issue 1, June 2025, Page 37-44 PDF (1.65 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ajar.2025.337182.1386 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Adel Mohamed Lotfy  1; Mohsen Saleh Hussein2; Hasan Yousef Allam3; Mohammed Gaber Desouky4
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| 1Faculty of Agriculture, Al Azhar University | ||||
| 2Department of Fish Production, Faculty of Agriculture, Al-Azhar University | ||||
| 3Department of Fish Production, Faculty of Agriculture, Al-Azhar University. | ||||
| 4National institute of oceanography and fisheries (NIOF) | ||||
| Abstract | ||||
| The lizardfish, Saurida undosquamis, is a species of significant economic importance in the Suez Gulf. This study examined its growth and reproductive characteristics, with age estimation conducted through otolith readings from specimens collected at Attaka Harbor over a one-year period from January to December 2023. A total of 3,183 fish were analyzed to establish the weight- length relationships, yielding the parameters. For males, a = 0.0143, b = 3.0784, while for females, they were a = 0.0077, b = 3.0225. Growth patterns were modeled using the function of growth by Von-Bertalanffy, with parameters, for males as L∞ = 44.9 cm, K = 0.558 year-1 and to = - 0.61, and for females as L∞ = 49.23 cm, K = 0.571 year-1, and to = -0.82. These growth parameters facilitated the estimation of total mortality rates through length-transformed catch data, revealing rates of 3.77 per year for male 2.22 per year for female. | ||||
| Keywords | ||||
| Saurida undosquamis; Growth patterns; Mortality rate; Otolith readings; Weight-length relationship | ||||
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