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International Journal of Fisheries and Aquatic Studies
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(ICV-Poland) Impact Value: 76.37, Impact Factor: RJIF 5.69
E-ISSN: 2347-5129, P-ISSN: 2394-0506

International Journal of Fisheries and Aquatic Studies

2019, Vol. 7, Issue 4, Part B

Feeding ecology of Marcusenius senegalensis (Pisces: Osteoglossiformes: Mormyridae; Steindachner, 1870) from Niger River in Northern Benin


Author(s): Kayode Nambil Adjibade, Alphonse Adite, Hamidou Arame, Rachad Sidi Imorou and Stanislas Pejanos Sonon

Abstract: Also known as bulldog fish, Marcusenius senegalensis is the dominant Mormyrid in Niger River in Northern Benin where the species is intensively exploited for sale and subsistence. The current research investigated the trophic ecology of this electric fish in order to document resource exploitation and feeding habits. Marcusenius senegalensis individuals were sampled monthly and stomach contents of the 2019 individuals collected were analyzed. The results indicated that Marcusenius senegalensis is an invertivore consuming a wide spectrum of food resources dominated by aquatic insects (74.38%), detritus (8.98%), sand particles (8.19%), crustaceans (3.92%), mollusks (2.51%) and phytoplankton (1.13%). Diet breadths were high and varied between 2.22 and 4.98, leading to a trophic plasticity behavior of the species. Diet overlaps between size classes were greater and averaged (Øjk)= 0.88. In Niger River, feeding grounds are now being severely degraded. Sustainable exploitation of Marcusenius senegalensis requires a community-based approach of habitat protection and conservation of this valuable Mormyrid.

Pages: 86-92  |  197 Views  22 Downloads

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How to cite this article:
Kayode Nambil Adjibade, Alphonse Adite, Hamidou Arame, Rachad Sidi Imorou and Stanislas Pejanos Sonon. Feeding ecology of Marcusenius senegalensis (Pisces: Osteoglossiformes: Mormyridae; Steindachner, 1870) from Niger River in Northern Benin. International Journal of Fisheries and Aquatic Studies. 2019; 7(4): 86-92.
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