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Diet composition and food habits of Caranx rhonchus (Carangidae) from the Gulf of Gabes (central Mediterranean)

Published online by Cambridge University Press:  25 June 2008

Ayda Sley ,
Othman Jarboui ,
Mohamed Ghorbel  and
Abderrahmen Bouain
Ayda Sley*
Affiliation:
Faculté des Sciences de Sfax, BP 802–3018 Sfax, Tunisie
Othman Jarboui
Affiliation:
Institut National des Sciences et Technologies de la Mer (Centre de Sfax), BP 1035–3018, Sfax, Tunisie
Mohamed Ghorbel
Affiliation:
Institut National des Sciences et Technologies de la Mer (Centre de Sfax), BP 1035–3018, Sfax, Tunisie
Abderrahmen Bouain
Affiliation:
Faculté des Sciences de Sfax, BP 802–3018 Sfax, Tunisie
*
Correspondence should be addressed to: Ayda Sley Faculté des Sciences de Sfax BP 802–3018 Sfax, Tunisie email: [email protected]
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Abstract

From June 2004 to May 2006, 1040 Caranx rhonchus (Carangidae) ranging from 6.5 to 30.6 cm in total length (TL), fished in the Gulf of Gabes (south Tunisia, central Mediterranean), were used to investigate feeding habits of the species. This study was based mainly on the evolution of the index of relative importance (IRI) with respect to sex, fish size and season. Among 1040 stomachs examined, 595 were empty (%VI = 57.2). The vacuity index (%VI) differed significantly across months and declined slightly with season. A total of 13 species representing 12 different families belonging to four major groups: teleosts, crustaceans, molluscs and annelids, were identified in stomach contents of Caranx rhonchus.

Caranx rhonchus is primarily an opportunistic piscivorous fish with a diet characterized by a wide range of species. Teleosts occurred in the majority of stomachs, with a total of the relative importance (%IRI) of 52.7%. The anchovy Engraulis encrasicolus were the most important teleost species (%IRI = 11.2), while crustaceans were the second most important food category consumed (47.1%).

There were no significant differences in the diet between males and females, but significant differences were found with season and among size-classes.

Keywords

dietCaranx rhonchusGulf of Gabes
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 88 , Issue 4 , August 2008 , pp. 831 - 836
Copyright
Copyright © Marine Biological Association of the United Kingdom 2008

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References

REFERENCES

Andaloro, F. and Pipetone, C. (1997) Food and feeding habits of the amberjack, Seriola dumerili in the central Mediterranean Sea during the spawing season. Cahiers de Biologie Marine 38, 1–96.Google Scholar
Ben-Salem, M. (1988) Régime alimentaire de Trachurus trachurus (Linnaeus, 1758) et de Trachurus mediterraneus (Steindachner, 1868) (Poissons, Téléostéens, Carangidae) de la province Atlantico-Méditerranéenne. Cybium 12, 247–253.Google Scholar
Ben Salem, M. and Ktari, M.H. (1980) Présentation des espèces du genre Trachurus (Rafinesque, 1810) et Caranx (Lacepède, 1801) (poissons, Téléostéens, Carangidae) des côtes tunisiennes: morphologie et biologie. Bulletin de l'Office National des Pêches, Tunisie 4, 155–168.Google Scholar
Berg, J. (1979) Discussion of the methods of investigating the food of fishes with reference to a preliminary study of the food of Gobiusculus flavescens (Gobiidae). Cahiers de Biologie Marine 50, 263–273.Google Scholar
Bigg, M.A. and Perez, M.A. (1985) Modified volume: a frequency–volume method to assess marine mammal food habits. In Beddington, J.R. et al. (eds) Marine mammals and fisheries. London: George Allen & Unwin, pp. 277–283.Google Scholar
Boely, T., Wysokinski, A. and Elwertowski, J. (1973) Les chinchards des côtes sénégalaises et mauritaniennes: biologie, déplacement, ressources. ORSTOM–FAO DSP, no. 46, 46 pp.Google Scholar
Bowman, R.E. and Bowman, E.W. (1980) Diurnal variation in the feeding intensity and catchability of silver hake (Merluccius bilinearis). Canadian Journal of Fisheries and Aquatic Sciences 37, 1565–1572.Google Scholar
Bradai, M.N. (2000) Diversité du peuplement ichtyque et contribution à la connaissance des sparidés du Golfe de Gabès. PhD thesis, Faculty of Sciences of Sfax, Sfax, Tunisia.Google Scholar
Chavance, P., Ba, I. and Krivospitchenko, S. (1991) Les petits poissons pélagiques côtiers de la Zone Economique Exclusive mauritanienne (ZEE). Bulletin du Centre National de Recherches Océanographiques et des Pêche (Mauritania) 23, 281–93.Google Scholar
Cortés, E. (1997) A critical review of methods of studying fish feeding based on analysis of stomach contents: application to elasmobranch fishes. Canadian Journal of Fisheries and Aquatic Sciences 54, 726–738.Google Scholar
Fezzani, S. (2006) Etude biologique et dynamique des espèces du genre Trachurus des côtes tunisiennes. PhD thesis, University of Tunis II, Faculty of Scienes of Tunis, Tunis, Tunisia.Google Scholar
Fischer, W.Bauchot, M.L. and Schneider, M. (1987) Fiches de la FAO d'identification des espèces pour les besoins de la pêche (Révision 1) Méditerranée et Mer Noire. Zone de pêche 37. II. Vertebrés Rome, pp. 761–11530.Google Scholar
Gaamour, A. (1999) La sardinelle ronde (Sardinella aurita, Valenciennes, 1847) dans les eaux tunisiennes: reproduction, croissance et pêche dans la région de Cap Bon. PhD thesis, Western Bretagne University, France.Google Scholar
Hyslop, E.J. (1980) Stomach contents analysis—a review of methods and their application. Journal of Fish Biology 17, 411–429.CrossRefGoogle Scholar
Kompowski, A. (1976) A study on the food and feeding habits of Trachurus trachurus, Trachurus trecaea, Trachurus picturatus and Caranx rhonchus in the region of Cape Blanc. Acta Ichthyologica et Piscatoria 6, 35–55.CrossRefGoogle Scholar
MacDonald, J.S. and Green, R.H. (1983) Redundancy of variables used to describe importance of prey species in fish diets. Canadian Journal of Fisheries and Aquatic Sciences 40, 635–637.CrossRefGoogle Scholar
Maigret, J. and Ly, B. (1986) Les poissons de mer de Mauritanie (ed. Sciences Naturelle), 213 pp.Google Scholar
Marchal, E. (1991) Location of the main West Africa pelagic stock, les pêcheries oust Africaines: variabilités, instabilities et changement (ed. de l'OORSTOM. Institut Français de Recherches Scientifiques pour le Développement en Coopération), pp. 185–191.Google Scholar
Ould Mohamed, A. (1999) Systématique et biologie of Caranx rhonchus (Geoffory Saint-Hiliaire, 1817, Téléostéen; Carangidae) des côtes tunisiennes et mauritaniennes. PhD thesis, University of Tunis II, Faculty of Sciences of Tunis, Tunis, Tunisia.Google Scholar
Overko, S.M. (1978) Morpho-biological characteristics of Caranx rhonchus in the eastern central Atlantic. COPACE/PACE SETS no. 10, 3 pp.Google Scholar
Pinkas, L., Oliphant, M.S. and Iverson, I.L.K. (1971) Food habits of albacore, bluefin tuna and bonito in California waters. Fishery Bulletin 152, 1–105.Google Scholar
Santic, M., Jardas, I. and Pallaoro, A. (2004) Feeding habits of horse mackerel, Trachurus trachurus (Linneaus, 1758), from the central Adriatic Sea. Journal of Applied Ichthyology 21, 125–130.CrossRefGoogle Scholar
Severin, R.J. (1983) Quelques particularités de la chaine alimentaire marine dans la région du banc d'Arguin Mauritani. Bulletin. Centre National de Recherches Océanographiques et des Pêches (Mauritania) 11, 41–52.Google Scholar
Sokal, R.R., Rohlf, F.J. (1981) Biometry. San Francisco, USA: W.H. Freeman and Co.Google Scholar
Tirasin, M.E. and Jørgensen, T. (1999) An evaluation of the precision of diet description. Marine Ecology Progress Series 182, 243–252.Google Scholar