Contribution à l'étude des races de thons Thunnus thynnus: caractères biométriques du thon tunisien et considérations sur sa croissance.
The study involved 103 tuna specimens caught along the Tunisian coasts during the period between 1923 and 1927. Different morphological parameters have been registered including the size of certain organs (eye, fins, anus and head) and/ or the height of the body, etc. The biological parameters revealed that the Tunisian tuna collected samples were very heterogeneous and do not form a single group. Hence, a comparative study on the spawning at different regions of the Tunisian coast would be useful in order to understand the issue of Tuna migration. Indeed, the differences in fish habitats (growth pattern) have a big impact on the values of the biological parameters and the screening of different fish races. The position of the eye, the fin or the anus on the body of the tuna could indicate if the animal during its travel crosses or not the Gibraltar Strait.
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| Format: | Book/Monograph/Conference Proceedings biblioteca |
| Language: | French |
| Published: |
Station Océanographique de Salammbô (SOS)
1927
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| Subjects: | Thon, Biométrie, Croissance, Thunnus thynnus, |
| Online Access: | http://hdl.handle.net/1834/8852 |
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| Summary: | The study involved 103 tuna specimens caught along the Tunisian coasts during the period between 1923 and 1927. Different morphological parameters have been registered including the size of certain organs (eye, fins, anus and head) and/ or the height of the body, etc. The biological parameters revealed that the Tunisian tuna collected samples were very heterogeneous and do not form a single group. Hence, a comparative study on the spawning at different regions of the Tunisian coast would be useful in order to understand the issue of Tuna migration. Indeed, the differences in fish habitats (growth pattern) have a big impact on the values of the biological parameters and the screening of different fish races. The position of the eye, the fin or the anus on the body of the tuna could indicate if the animal during its travel crosses or not the Gibraltar Strait. |
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