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VOL. 10, ISSUE 12 (2025)
Diversity and abundance of aquatic insects in three lentic ecosystems of the Bongouanou Department (Cote d’Ivoire)
Authors
Fato Edouard Motchie, Kouakou Barthelemy Koffi, Affoue Danielle Kouame Ouanko, Bi Gnamien Willy Taunin Goore
Abstract
This study aimed to assess the biodiversity of
aquatic insects in three lacustrine ecosystems subjected to different levels of
anthropogenic pressure in the department of Bongouanou (Côte d’Ivoire). The
study was conducted in Lakes Sokotè and Kaby, located in urban areas, and Lake
Ehuikro, located in a peri-urban area. Data were collected monthly from May
2017 to April 2018. Benthic aquatic insects were sampled using a Van Veen grab,
while insects associated with aquatic macrophytes were collected using a hand
net. Out of a total of 55 taxa recorded, Lake Ehuikro was the most diverse with
39 taxa, whereas Lakes Kaby and Sokotè harbored 32 and 23 taxa, respectively.
At the family level, Baetidae dominated the assemblage in Lake Ehuikro,
accounting for 29.77% of the total abundance. In Lakes Sokotè and Kaby,
Chironomidae were the most abundant, with proportions of 86.43% and 33.41%,
respectively. The ecological quality of the three water bodies was assessed
based on the tolerance/intolerance of insects to water pollution using their
relative abundance. Tolerant individuals dominated the assemblage in Lake
Sokotè (94.67%), indicating very poor water quality. Lake Kaby was
characterized by a predominance of intermediate insects (48.90%) with a
considerable proportion of tolerant insects (40.46%), suggesting poor water
quality. In contrast, Lake Ehuikro was mainly populated by intermediate
(54.34%) and intolerant insects (29.77%), indicating good water quality. This
study highlights variations in aquatic insect diversity according to the
environmental characteristics of these three ecosystems. The results provide a
baseline for improved management of these water bodies.
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Pages:193-198
How to cite this article:
Fato Edouard Motchie, Kouakou Barthelemy Koffi, Affoue Danielle Kouame Ouanko, Bi Gnamien Willy Taunin Goore "Diversity and abundance of aquatic insects in three lentic ecosystems of the Bongouanou Department (Cote d’Ivoire)". International Journal of Entomology Research, Vol 10, Issue 12, 2025, Pages 193-198
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