Age and growth of Spondyliosoma cantharus (Sparidae) in the Gulf of Tunis
Age and the growth of the black seabream Spondyliosoma cantharus (Linnaeus, 1758) from the Gulf of Tunis were investigated using scales and otoliths. The length-weight relationship showed that the growth rates were isometric for females whereas males and the whole sample present a positive allometry...
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| Format: | Article |
| Language: | English |
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Consejo Superior de Investigaciones Científicas
2015-09-01
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| Series: | Scientia Marina |
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| Online Access: | http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1593 |
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| author | Nejla Mouine-Oueslati Romdhani Ahlem Chater Ines Mohamed-Hédi Ktari Nadia Chakroun-Marzouk |
| author_facet | Nejla Mouine-Oueslati Romdhani Ahlem Chater Ines Mohamed-Hédi Ktari Nadia Chakroun-Marzouk |
| author_sort | Nejla Mouine-Oueslati |
| collection | DOAJ |
| description | Age and the growth of the black seabream Spondyliosoma cantharus (Linnaeus, 1758) from the Gulf of Tunis were investigated using scales and otoliths. The length-weight relationship showed that the growth rates were isometric for females whereas males and the whole sample present a positive allometry. The monthly evolution in marginal increment data of scales and otoliths revealed that only one annulus is formed per year in April. Fish length and radii of the scales or otoliths were closely correlated. The von Bertalanffy growth equation was fitted on mean back-calculated length-at-age data, resulting in the parameter values L∞=35.4 cm, k=0.15 y–1 and t0=–0.19 y for scales and L∞=38.6 cm, k=0.10 y–1 and t0=–0.14 y for otoliths. Parameters estimated from scale and otoliths were significantly similar. However, taking into consideration the lower standard deviations of means for estimates based on otolith readings and the higher variance explained by the regression line fitted to otoliths, the latter seem to be more appropriate for ageing S. cantharus. The maximum age of the black seabream of the Gulf of Tunis is 10 years. Large discrepancies in growth parameters between geographic areas are the result of different growth patterns. |
| first_indexed | 2024-12-23T03:23:19Z |
| format | Article |
| id | doaj.art-c27e21312a4f4e88b68741ad803c4670 |
| institution | Directory Open Access Journal |
| issn | 0214-8358 1886-8134 |
| language | English |
| last_indexed | 2024-12-23T03:23:19Z |
| publishDate | 2015-09-01 |
| publisher | Consejo Superior de Investigaciones Científicas |
| record_format | Article |
| series | Scientia Marina |
| spelling | doaj.art-c27e21312a4f4e88b68741ad803c46702022-12-21T18:01:56ZengConsejo Superior de Investigaciones CientíficasScientia Marina0214-83581886-81342015-09-0179331932410.3989/scimar.04234.13A1564Age and growth of Spondyliosoma cantharus (Sparidae) in the Gulf of TunisNejla Mouine-Oueslati0Romdhani Ahlem1Chater Ines2Mohamed-Hédi Ktari3Nadia Chakroun-Marzouk4Université de Tunis El Manar, Faculté des Sciences de Tunis, UR11ES12 Biologie de la Reproduction et du Développement animalUniversité de Tunis El Manar, Faculté des Sciences de Tunis, UR11ES12 Biologie de la Reproduction et du Développement animalUniversité de Tunis El Manar, Faculté des Sciences de Tunis, UR11ES12 Biologie de la Reproduction et du Développement animalUniversité de Tunis El Manar, Faculté des Sciences de Tunis, UR11ES12 Biologie de la Reproduction et du Développement animalUniversité de Tunis El Manar, Faculté des Sciences de Tunis, UR11ES12 Biologie de la Reproduction et du Développement animalAge and the growth of the black seabream Spondyliosoma cantharus (Linnaeus, 1758) from the Gulf of Tunis were investigated using scales and otoliths. The length-weight relationship showed that the growth rates were isometric for females whereas males and the whole sample present a positive allometry. The monthly evolution in marginal increment data of scales and otoliths revealed that only one annulus is formed per year in April. Fish length and radii of the scales or otoliths were closely correlated. The von Bertalanffy growth equation was fitted on mean back-calculated length-at-age data, resulting in the parameter values L∞=35.4 cm, k=0.15 y–1 and t0=–0.19 y for scales and L∞=38.6 cm, k=0.10 y–1 and t0=–0.14 y for otoliths. Parameters estimated from scale and otoliths were significantly similar. However, taking into consideration the lower standard deviations of means for estimates based on otolith readings and the higher variance explained by the regression line fitted to otoliths, the latter seem to be more appropriate for ageing S. cantharus. The maximum age of the black seabream of the Gulf of Tunis is 10 years. Large discrepancies in growth parameters between geographic areas are the result of different growth patterns.http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1593spondyliosoma cantharusgrowthscalesotolithslength-weight relationshipgulf of tunis |
| spellingShingle | Nejla Mouine-Oueslati Romdhani Ahlem Chater Ines Mohamed-Hédi Ktari Nadia Chakroun-Marzouk Age and growth of Spondyliosoma cantharus (Sparidae) in the Gulf of Tunis Scientia Marina spondyliosoma cantharus growth scales otoliths length-weight relationship gulf of tunis |
| title | Age and growth of Spondyliosoma cantharus (Sparidae) in the Gulf of Tunis |
| title_full | Age and growth of Spondyliosoma cantharus (Sparidae) in the Gulf of Tunis |
| title_fullStr | Age and growth of Spondyliosoma cantharus (Sparidae) in the Gulf of Tunis |
| title_full_unstemmed | Age and growth of Spondyliosoma cantharus (Sparidae) in the Gulf of Tunis |
| title_short | Age and growth of Spondyliosoma cantharus (Sparidae) in the Gulf of Tunis |
| title_sort | age and growth of spondyliosoma cantharus sparidae in the gulf of tunis |
| topic | spondyliosoma cantharus growth scales otoliths length-weight relationship gulf of tunis |
| url | http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1593 |
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