International Journal of Fisheries and Aquatic Research

International Journal of Fisheries and Aquatic Research


International Journal of Fisheries and Aquatic Research
International Journal of Fisheries and Aquatic Research
Vol. 4, Issue 4 (2019)

Effect of three exogenous foods used in Oreochromis niloticus (Linné, 1758) foods on the diversity and structure of aquatic entomofauna stands in Blondey fishponds (Ivory Coast; West Africa)


Idrissa Adama Camara, Nangounon Soro, Kouadio Kouakou Norbert, Doumbia Lacina, Ouattara Allassane, Dramane Diomande

The insect class strongly contributes to the nutrition of fish in ponds. However, the use of exogenous foods in fish farming often modify the physicochemical quality of water in fish ponds. Thus, the diversity and structure of the insect class can be disrupted. This study aims to evaluate the effect of three exogenous foods used in Oreochromis niloticus foodsing on the diversity and structure of the insect community in Blondey fish ponds. Those foods formulated solely with animal by-products were tested in juvenile and adult stages. Thus, seven fishponds whose four (E1, E2, E3, E4) at juvenile stage and three (E7, E8, E9) at adult stage were selected. Among them, E2, E3, E4, E8 received exogenous food while E1 and E9 stocked with no exogenous food were used as witness. Insects samples were taken monthly using artificial substrats, from october 2016 to June 2017. A total of 100 insects taxa divided into seven orders dominated by Odonata, Coleoptera and Diptera were obtained. The taxonomic richness was high in fishponds that received exogenous food s and low in those without exogenous foods during the two stages (adulte and juvenile). The fishponds E4 and E8 that received housefly maggot meal registered the highest taxonomic richness. Concerning water quality of the fishponds that received exogenous foods, it oscillated between poor and very poor. The Focused Principal Component Analysis (FPCA) indicates that dissolved oxygen, pH, transparency and phosphate influence significantly the abundance of Setodes sp., Nilodorum brevibucca and Nilodorum brevipalpis in Blondey fishponds.
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How to cite this article:
Idrissa Adama Camara, Nangounon Soro, Kouadio Kouakou Norbert, Doumbia Lacina, Ouattara Allassane, Dramane Diomande. Effect of three exogenous foods used in Oreochromis niloticus (Linné, 1758) foods on the diversity and structure of aquatic entomofauna stands in Blondey fishponds (Ivory Coast; West Africa). International Journal of Fisheries and Aquatic Research, Volume 4, Issue 4, 2019, Pages 48-54
International Journal of Fisheries and Aquatic Research