Age, growth and mortality of the Gilthead Seabream, Sparus aurata (Family: Sparidae) in Bardawill lagoon, North Sinai, Egypt
Gamal, M., El-Ameen, M., Ahmed, M., El-Dakar, A., Kassem, S., El-Beak, A. (2023). Age, growth and mortality of the Gilthead Seabream, Sparus aurata (Family: Sparidae) in Bardawill lagoon, North Sinai, Egypt. EKB Journal Management System, 13(3), 19-32. doi: 10.21608/eja.2025.85049.1049
Mohamed Gamal; Missara El-Ameen; Mohamed Salem Ahmed; Ashraf Youssef El-Dakar; Samah Kassem; Ahmed El-Beak. "Age, growth and mortality of the Gilthead Seabream, Sparus aurata (Family: Sparidae) in Bardawill lagoon, North Sinai, Egypt". EKB Journal Management System, 13, 3, 2023, 19-32. doi: 10.21608/eja.2025.85049.1049
Gamal, M., El-Ameen, M., Ahmed, M., El-Dakar, A., Kassem, S., El-Beak, A. (2023). 'Age, growth and mortality of the Gilthead Seabream, Sparus aurata (Family: Sparidae) in Bardawill lagoon, North Sinai, Egypt', EKB Journal Management System, 13(3), pp. 19-32. doi: 10.21608/eja.2025.85049.1049
Gamal, M., El-Ameen, M., Ahmed, M., El-Dakar, A., Kassem, S., El-Beak, A. Age, growth and mortality of the Gilthead Seabream, Sparus aurata (Family: Sparidae) in Bardawill lagoon, North Sinai, Egypt. EKB Journal Management System, 2023; 13(3): 19-32. doi: 10.21608/eja.2025.85049.1049

Age, growth and mortality of the Gilthead Seabream, Sparus aurata (Family: Sparidae) in Bardawill lagoon, North Sinai, Egypt

Egyptian Journal for Aquaculture
Volume 13, Issue 3, September 2023, Page 19-32  XML PDF (526.6 K)
Document Type: Original Article
DOI: 10.21608/eja.2025.85049.1049
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Authors
Mohamed Gamal1; Missara El-Ameen2; Mohamed Salem Ahmed3; Ashraf Youssef El-Dakar2; Samah Kassem email 4; Ahmed El-Beak5
1Fisheries, faculty of Aquaculture and marine fisheries,Arish university, North Sinia, Egypt
2aquaculture and marine fisheries, arish university.
3aquaculture and marine fisheries, arish university
4center laboratory for aquaculture reserches (CLAR)
5general authority for fish resources development (GAFRD)
Abstract
Age, growth, and mortality of the Gilthead Seabream, Sparus aurata were studied from a small-scaled fishery of Bardawil lagoon, (North Sinai, Egypt).499 specimens of Sparus aurata varied from 9.7 to 29 cm with weights ranging between 16.6 and 325.3 g. were collected from October to April during fishing season 2020-2021. The relationship between length and weight was W= 0.0239 L2.8357 (R2 = 0.9677) Age was determined by otoliths and age groups 0 to 5 years were observed. Growths in length and weight at the end of each year were calculated. The growth parameters of von Bertalanffy equation were calculated as (L∞ = 39.38, K = 0.1615 year-1, t0 = -2.31 year-1 and W∞= 798.5). Growth performance index was 2.40 for length and 1.14 for weight. Mortality rates were 0.794 year-1; 0.23 year-1 and 0.56 year-1 for total, natural and fishing mortality, respectively. The currently of the exploitation rate (E) = 0.71.
Keywords
Bardawil lagoon; gilthead seabream (Sparus aurata); Length &Weight relationship; Age; and mortality
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