Some biological aspects of European seabass Dicentrarchus labrax in Egyptian Mediterranean water and aquaculture, Egypt | ||||
Mediterranean Aquaculture Journal | ||||
Article 3, Volume 7, Issue 1, December 2015, Page 22-35 PDF (673.81 K) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/maj.2015.4630 | ||||
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Authors | ||||
Bakhoum A1; El-Bermawi M.2; Srour M.2; Goda M.1; Hebalah M1 | ||||
1National Institute of Oceanography and Fisheries, Alexandria, Egypt | ||||
2Faculty of Agriculture (Saba Basha), Alexandria Univ., Egypt | ||||
Abstract | ||||
Biological aspects between cultivated and wild sea bass, Dicentrarchus labrax were evaluated. Fish samples were collected seasonally from Boughaz El-Maadiya in the eastern Mediterranean coast and fish farm. The length-weight relationship of seabass from two habitats were calculated and condition factor for seabass captured from El-Maadiya region (Mean ± S.d = 1.044 ± 0.0905) was lower than that for fish farm (Mean ± S.d = 1.158 ± 0.8119). The mean value of natural mortality coefficient for wild seabass was 0.172 ± 0.017. Significant seasonal difference in degrees of stomach fullness of seabass from El-Maadiya region (F = 3.589, df = 3, p<0.05) and fish farm (F = 8.381, df = 3, p<0.01). sex ratio for seabass from El-Maadiya region (X2 =5.21, p < 0.05) differ significantly from cultivated in fish farm. The average of gonadosomatic index (GSI) (0.258 ± 0.2865), hepatosomatic Index (HSI) (1.20 ± 0.5714) and spleen-somatic index (SSI) (0.102 ± 0.0518) for fishes from El-Maadiya region was lower than GSI (0.940 ± 1.5601), HSI (1.486 ± 0.5247) and SSI (0.157 ± 0.2406) for cultured seabass. | ||||
Keywords | ||||
Fishery biology; Natural mortality; Feeding intensity; biological indices | ||||
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