Population dynamics of 15 fish species in Grand-Lahou lagoon (West Africa, Côte d’Ivoire)
Paper Details
Population dynamics of 15 fish species in Grand-Lahou lagoon (West Africa, Côte d’Ivoire)
Abstract
This study described growth, mortality, recruitment patterns and exploitation rates of 15 fish species in Grand-Lahou lagoon (Côte d’Ivoire). Monthly length-frequency data collected from artisanal fisheries from November 2013 to October 2014 were analyzed with FiSAT software using the ELEFAN package to estimate the population parameters of fishes. Asymptotic values for total length (L∞) ranged from 15.75 cm for Synodontis schall to 59.80 cm for Trachinotus teraia. Growth rate (k) varied from 0.19 for Coptodon guineensis to 0.98 for Caranx hippos. The growth performance index estimates were close to the values found by other authors for most of the fish species. The total mortality (Z) high values were recorded for Synodontis schall (Z= 4.15 year-1; M = 2.50 year-1) Schilbe mandibularis (Z= 2.19 year-1; M=1.33 year-1). Fishing mortality (F) and exploitation rate (E) were found to be less than the optimum levels of exploitation for most fish species. The exploitation rate (E) was higher than the maximum sustainable yield (Emax) for Caranx hippos and higher than E0.5 for Eucinostomus melanopterus, Elops lacerta and Synodontis schall. Recruitment was noted as year-round and bimodal for most studied populations. These results demonstrate that some fish stocks necessitate effective management measures particularly C. hippos, E. melanopterus, E. lacerta and S. schall.
Abowei J, George A, Davies O. 2010. Mortality, Exploitation rate and Recruitment pattern of Callinectes amnicola from Okpoka Creek, Niger Delta, Nigeria. Asian Journal of Agriculture Sciences, p 27-34.
Albaret JJ, Laë R. 2003. Impact of fishing on fish assemblages in tropical lagoons: The example of the Ebrie lagoon West Africa. Aquatic Living Resource 16, 1-9.
Aripin IE, Showers PAT. 2000. Population parameters of small pelagic fishes caught off Tawi-Tawi, Philippines. ICLARM Fishbyte 23, 21–26.
Baijot E, Moreau J. 1997. Biology and demographic status of the main fish species in the reservoirs of Burkina-Faso. In: Baijot, E., Moreau, J., Bouda, S. (Eds.), Hydrobiological aspects of fisheries in Small Reservoirs in the Sahel Region. Technical Centre for the European Communities, Wageningen, the Netherlands, p 79–109.
Bodji MI, Konan KJ, Ouattara NI, Atsé BC. 2015. Paramètres de croissance et d’exploitation de la carpe blanche Pomadasys jubelini (Cuvier, 1830) dans les complexes lagunaires de Grand-Lahou, Ebrié et Aby (Côte d’Ivoire, Afrique de l’Ouest). Tropicultura 3, 186-198.
Chikou A. 2006. Etude de la démographie et de l’exploitation halieutique de six espèces de poissons chats (Teleostei, siluriformes) dans le delta de l’Ouémé au Bénin. Thèse de doctorat, Université de liège France, p 459.
Costanza R, Darge R, Degroot R, Farber S, Grasso M. Hannon B. 1997. The value of the world’s ecosystem services and natural capital. Nature 387, 253-260.
Diaby M, N’da K, Konan KS. 2012. La pêche des Mugilidae dans la lagune de Grand-Lahou (Côte d’Ivoire): analyse de l’organisation de la pêche, des captures et de l’effort de pêche. Tropiculture 3, 173-179.
Dumay O, Tari PS, Tomasini JA, Mouillot D. 2004. Functional groups of lagoon fish species in languedoc roussillon southern France. Journal of Fish Biology 64, 970-983.
Durand JR, Skubich M. 1982. Les lagunes ivoiriennes. Aquaculture 27, 211-250.
Gayanilo Jr FC, Pauly D. 1997. The FAO-ICLARM Fish Stock Assessment Tools (FISAT): Reference manual. FAO Computerised Information Series Fisheries FAO, Rome. p 262.
Gulland J. 1971. The Fish Resources of the Oceans. FAO/Fishing News Books, Surrey, p 255.
Laë R. 1982. Les pêcheries artisanales lagunaires ouest Africaines : échantillonnage et dynamique de la ressource et de l’exploitation. Editions ORSTOM, Paris p 201.
Mathews CP, Samuel M. 1990. Using the growth performance index to choose species for Aquaculture: An example from Kuwait. Aquabyte 2, 2-4.
Montcho AS. 2011. Diversité et exploitation des poissons de la rivière Pendjari (Bénin, Afrique de l’Ouest). Thèse de Doctorat en Sciences Agronomiques, Université d’Abomey-Calavi, Bénin 201.
Niyonkuru C, Lalèyè P, Villanueva MC, Moreau J. 2003. Population Parameters of Main Fish Species of Lake Nokoue in Benin. Abstract. Third Internat. Conf. Pan African Fish and Fisheries Association, Cotonou, Benin 10-14.
N’Goran YN. 1998. Statistiques de pêche en lagune Aby (Côte d’Ivoire): évolution de l’effort et des captures de 1979 à 1990. Journal Ivoirien d’Océanologie et Limnologie Abidjan 1, 25-37.
Paugy D, Levêque C, Teugels G.G. 2003a. Faunes des poissons d’eaux douces et saumâtres de l’Afrique de l’ouest Tome 1 MRAC, Tervuren , p 457.
Paugy D, Lévêque C, Teugels G.G. 2003b. Faune des poissons d’eaux douces et saumâtres de L’Afrique de l’Ouest. Tome 2 MRAC, Tervuren, p 815.
Pauly D. 1979. Theory and management of tropical multispecies stocks: a review with emphasis on the Southeast Asian demersal fisheries study Review.
Pauly D. 1980. A selection of simple method for the assessment of tropical fish stocks. FAO, p 54.
Pauly D. 1982. Studying single-species dynamics in a tropical multispecies context. In: Theory and Management of Tropical Fisheries. Pauly D, Murphy GI. (Eds), ICLARM Conf. Proc 9, 33–70.
Pauly D. 1983. Length-converted catch curves. A powerful tool for fisheries research in the tropics. Part1. ICLARM Fishbyte 2, 9-13.
Pauly D, Munro JL. 1984. Once more on the comparison of growth in fish and invertebrates. ICLARM Fishbyte 2, 1-21.
Pauly D, Caddy JF. 1985. A modification of Bhattacharya’s method for the analysis of mixtures of normal distributions. FAO Fish Circ., p 16.
Qasim SZ. 1973. Some Implication of the problem of age and growth in marine fishes from Indian waters. Indian Journal of Fisheries 20, 351–371.
Rudnick DT, Chen Z, Childers JB, Fontaire T. 1999. Phosphorus and nitrogen inputs to Florida Bay: the importance of everglades, watershed. Estuaries 25, 34-67.
Segbefia J, Nunoo KEF, Dankwa RH. 2013. Species Composition, Abundance, and Growth of Three Common Fish Species of the Volta Estuary, Ghana International Journal of Fisheries and Aquaculture Sciences 1, 79-97.
Sparre P, Ursin E, Venema SC. 1989. Introduction to tropical fish stock assessment. FA0 Fishery Technical Paper 306/1.
Villanueva MSC. 2004. Biodiversité et relations trophiques dans quelques milieux estuariens et lagunaires de l’Afrique de l’Ouest: Adaptation aux pressions environnementales. Thèse de Doctorat de l’Institut National Polytechnique de Toulouse France 272.
Weber W. 1976. The influence of hydrographic factors on the spawning time of tropical fish. In: Fisheries Resources and their Management in Southeast Asia (Ed.: Tiews, K.) p 269-281.
Welcomme RI, De Merona B. 1988. Fish communities of rivers in: Biology and ecology of African freshwater fishes. Levêque c, Bruton MN, Ssentongo GW, ORSTOM, Paris (Eds), p 251-272.
Coulibaly Bakari, Tah Léonard, Kouadio Konan Justin, Koivogui Pierre, Tidiani Koné, Essétchi paul Kouamélan, 2022. Population dynamics of 15 fish species in Grand-Lahou lagoon (West Africa, Côte d’Ivoire). Int. J. Biosci., 20(1), 1-11.
Copyright © 2022 by the Authors. This article is an open access article and distributed under the terms and conditions of the Creative Commons Attribution 4.0 (CC BY 4.0) license.