S. Ahmed et al., K. (2021). Age, growth and mortality of the Bartail Flathead (Platycephalus indicus) in Bardawil lagoon, North Sinai, Egypt.. Egyptian Journal of Aquatic Biology and Fisheries, 25(4), 241-252. doi: 10.21608/ejabf.2021.187867
Kassem S. Ahmed et al.. "Age, growth and mortality of the Bartail Flathead (Platycephalus indicus) in Bardawil lagoon, North Sinai, Egypt.". Egyptian Journal of Aquatic Biology and Fisheries, 25, 4, 2021, 241-252. doi: 10.21608/ejabf.2021.187867
S. Ahmed et al., K. (2021). 'Age, growth and mortality of the Bartail Flathead (Platycephalus indicus) in Bardawil lagoon, North Sinai, Egypt.', Egyptian Journal of Aquatic Biology and Fisheries, 25(4), pp. 241-252. doi: 10.21608/ejabf.2021.187867
S. Ahmed et al., K. Age, growth and mortality of the Bartail Flathead (Platycephalus indicus) in Bardawil lagoon, North Sinai, Egypt.. Egyptian Journal of Aquatic Biology and Fisheries, 2021; 25(4): 241-252. doi: 10.21608/ejabf.2021.187867
Age, growth and mortality of the Bartail Flathead (Platycephalus indicus) in Bardawil lagoon, North Sinai, Egypt.
Age, growth, and mortality of bartail flathead (Platycephalus indicus) were studied from a small-scale fishery of Bardawil lagoon, North Sinai, Egypt. A total of 947 specimens of Platycephalus indicus varied from 17.9 to 52.1 cm TL with weights ranging between 27.6 and 1003.7 g were collected from August to December during two fishing seasons 2019-2020. A subsample of 654 specimens was taken for age determination using otoliths readings. The relationship between length and weight was W = 0.002 L3.3402 (R2 = 0.98) indicating positive allometric growth. Age was determined and age groups 0 to 5 years were observed. Growth in length and weight at the end of each year of life was calculated. The growth parameters of von Bertalanffy equation were calculated as L∞ = 59.98 cm TL, K = 0.34 yr-1, t0 = -0.44 year and W∞ = 1737.9 g. The growth performance index was calculated as φ = 3.09 for length and φ= 1.69 for weight. Mortality rates were 1.152 yr-1, 0.482 yr-1 and 0.67 yr-1 for total, natural and fishing mortality, respectively. The current exploitation rate (E) was 0.583 for both sexes combined.
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