Some Biological Characteristics of Ten Fish Species in a Tropical Man-made Lake, Taabo Reservoir, West Africa.
Keywords:
Size, Sex ratio, Length-weight relationships, Condition factor, Freshwater fishes, Taabo Reservoir, West AfricaAbstract
We studied some biological aspects of ten fish species from the Taabo Lake in Ivory Coast (West Africa). These fishes were the most targeted by the artisanal fisheries with about 77% of the captures. Fish populations were sampled during five surveys. Fish size, sex ratio, length-weight relationships and condition factor were analyzed. Standard lengths indicated a wide range for the ten species and the highest sizes recorded in this study were lower than those observed in other aquatic systems of West Africa. Sex ratios differed between species and showed significant variation from the expected ratio of 1:1 for seven species. Males were more abundant in four species (Distichodus rostratus, Tilapia zillii, Pellonula leonensis and Schilbe mandibularis) whereas females predominated in three species (Chrysichthys nigrodigitatus, Synodontis schall and S. punctifer). The values of the parameter “b” in length-weight relationships ranged from 2.702 to 3.267 and the ten fish species presented an allometric growth. The condition factor showed a wide range for all the studied species.
References
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[5] C. Pet-Soede, W. L. T. Van Densen, J. S. Pet and A. M. Machiels. Impact of Indonesian coral reef fisheries on fish community structure and the resultant catch composition. Fisheries Research 51, pp. 35-51, 2001.
[6] J. D. Stevens, R. Bonfil, N. K. Dulvy and P. A. Walker. The effects of fishing on sharks, rays, and chimaeras (chondrichthyans), and the implications for marine ecosystems. ICES Journal of Marine Science 57, pp. 476-494, 2000.
[7] D. Pauly, V. Christensen, S. Guénette, T. J. Pitcher, U. R. Sumaila, C. J. Walters, R. Watson and D. Zeller. Towards sustainability in world fisheries. Nature 418, pp. 689-695, 2002.
[8] G. A. Begg and G. Marteinsdottir. Spatial partitioning of relative fishing mortality and spawning stock biomass of Icelandic cod. Fisheries Research 59, pp. 343-362, 2003.
[9] C. Lévêque and D. Paugy. Impacts des activités humaines. In: C. Lévêque and D. Paugy (eds). Les poissons des eaux continentales africaines : diversité, écologie, utilisation par l'homme. Edition IRD, Paris, pp. 365-383, 1999.
[10] K. L. Kouassi, Y. A. N’go, T. Gnagne, B. Kamagaté, N. H. Mélèdje and I. Savane. Improvement of the Assessment Method of the Main Terms of the Hydrological Balance of the Hydroelectric Dam Lakes of Côte d’Ivoire in a High Hydropluviometric Fluctuations Context: Case of Taabo Lake, European Journal of Scientific Research, 19 (1), pp. 71-84, 2007.
[11] D. Paugy, C. Lévêque and G. G. Teugels. Poissons d'eaux douces et saumâtres de l'Afrique de l'Ouest, édition complète. Tomes I and II. Edition IRDMNHN-MRAC, Paris-Turvuren, 457 + 815p, 2003.
[12] E. D. Le Cren. Length-weight relationships and seasonal cycle in gonad weight and condition in the perch (Perca fluviatilis). Journal of Animal Ecology, 20, pp. 201-219, 1951.
[13] J. H. Zar. Biostatistical Analysis. 4th Edition. Prentice–Hall, Englewood Cliffs, New Jersey, 662p, 1999.
[14] G. V. Nikolsky. The ecology of fishes (translated by L. Birkett). AcademicPress, London, 352p, 1963.
[15] A. E. A. Vazzoler. Biologia da reprodução de peixes Teleósteos: teoria e prática. EDUEM, SBI, Maringá, 169p, 1996.
[16] D. Sudarshan, T. E. Sivaprakasam, M. E. John, A. K. Bhargava, S. M. Patil and V. V. Naik. Chartered fishing vessels operations in the EEZ. Fishery Survey of India Publication No.1, 29p, 1991.
[17] M. E. John and D. Sudarshan.. Fishery biology of yellowfin tuna occurring in oceanic fishing in Indian Seas. In: D.Sudarshan and M.E.John (Eds.). Tuna Research in India, Fishery Survey of India, Bombay, pp. 39-61, 1993.
[18] S. L. Chonder. Length-weight relationship of mature female Labeo gonius (Hamilton) from the Keetham Reservoir. Journal of the Inland Fisheries Society of India 4, pp. 216-217, 1972.
[19] W. R. Martin. The mechanism of environmental control of body form in fishes. University of Toronto. Studies in Biology Series 58, Ontario Fisheries Research Laboratory 70, 172p, 1949.
[20] T. B. Bagenal and F.W. Tesch. Methods of Assessment of Fish Production in Fresh Waters. IBP Handbook No 3, 3rd ed. Oxford Blackwell Scientific Publication, London, pp. 101-136, 1978.
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2015-11-20
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Aliko, N., Assemian, N., Boussou, K., & Konan, koffi. (2015). Some Biological Characteristics of Ten Fish Species in a Tropical Man-made Lake, Taabo Reservoir, West Africa. American Scientific Research Journal for Engineering, Technology, and Sciences, 14(3), 27–34. Retrieved from https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/1047
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