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| Chater, Ines; Romdhani, Ahlem; Ktari, Mohamed Hédi; Mahe, Kelig. |
| Analysis of diet composition and feeding intensity of the brown meager (Sciaena umbra, Linnaeus, 1758) was realised seasonally and according to the fish size in the Central Mediterranean sea (Gulf of Tunis). Specimens were collected, monthly from October 2008 to September 2011 from the landings of the small-scale fisheries. In all, 272 stomachs of brown meagre measuring between 15.3 and 49.2cm total length (TL) were examined. The prey items identified in stomachs belong to six groups: Crustacea (Decapoda, Amphipoda, Isopoda, Mysidacea, Stomatopoda…), Annelida, Mollusca, Teleostei, Angiosperma and Algae. 118 stomachs were empty (43.4%). This percentage varied throughout the year. The lowest feeding intensity was recorded in summer during spawning period... |
| Tipo: Text |
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| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00117/22791/20593.pdf |
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| Romdhani, Ahlem; Chater, Ines; Ktari, Mohamed Hédi; Dufour, Jean-louis; Mahe, Kelig. |
| The age of fish in a population is fundamental to most of the questions fishery biologists attempt to answer about that population. The aim of this study was to report the parameters of the weight-length relationship and to estimate the age and growth of Phycis phycis (Linnaeus, 1766) in Gulf of Tunis. A sample of 272 specimens of P. phycis was collected from the landings of the small-scale artisanal fisheries between September 2007 and June 2010. The total length (TL) ranged from 14 to 55.5cm and total weight (TW) from 45 to 1779g. Length-weight relationship were described by allometrically positive for the females (TW = 0.0083*TL3. 0703), males (TW= 0.0063*TL3.1471), and both sexes (TW= 0.0082*TL3. 0759). No significant differences were found between... |
| Tipo: Text |
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| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00117/22790/20592.pdf |
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