Academic Research Journal of
Agricultural Science and Research
Academic Research Journal of Agricultural Science and Research
Vol. 6(1), pp. 11-19. January, 2018.
Full Length Research
FISH DIVERSITY ASSESSMENT IN A MANGROVE ECOSYSTEM OF SOUTH BENIN (WEST AFRICA)
Louis Babatoundé LAWANI 1,2, Aliou FOUSSENI 1,2, Vincent Joseph MAMA 1; Antoine CHIKOU 2, Djiman LEDEROUN 2, Philippe LALEYE 2
1 National Institute for Agricultural Research of Benin (INRAB), 01 BP 988 Cotonou, Benin.
2 Laboratory of Hydrobiology and Aquaculture, Faculty of Agricultural Sciences. University of Abomey-Calavi (LHA) 01 BP 526 Benin.
Accepted 23 December 2017
Fish is an important food
for many rural populations particularly in Africa. In order to assess
the current state of those resources of the Ouidah lagoon in south
Benin, a study has been carried out. It aims at investigating on the
water quality and to assess the fish diversity of Ouidah lagoon. In this
study, water quality parameters such as temperature, pH, dissolved
oxygen and depth were measured monthly. Common fishing gears were
identified and fish landing from local fishermen were recorded monthly.
The results of the water quality analysis show that there is a
significant difference between the values of dissolved oxygen, pH and
depth of the different stations unlike other physicochemical parameters.
Twenty-one (21) fish species belonging to sixteen (16) families were
identified. Cichlids were the most represented family (19.09%) with four
species, followed by Clupeids (9.52%) with two species. Other fish
families such as, Elopidae, Gerreidae, Haemilidae, Aralichthydae, are
represented only by one specie. In Ouidah lagoon, local fishermen use
different gears for fishing: gillnets, throwing nets and traps.
Biological indexes calculated showed differences between fish diversity.
It is noted also a bad distribution of individuals from one specie to
another. Fish distribution in Ouidah lagoon has been influenced by sea
through fish migrations and the rehabilitation of the mangrove swamp in
the zone which provides better ecological conditions.
How to cite this article: LAWANI LB, FOUSSENI A, MAMA VJ, CHIKOU A, LEDEROUN D, LALEYE P (2018). FISH DIVERSITY ASSESSMENT IN A MANGROVE ECOSYSTEM OF SOUTH BENIN (WEST AFRICA). Acad. Res. J. Agri. Sci. Res. 6(1): 11-19