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VOL. 10, ISSUE 5 (2025)
Diversity and distribution of macroinvertebrates in three dam lakes of korhogo department (Côte d'Ivoire) : Influence of environmental parameters
Authors
Dely Pecosse Boua, Kobenan Mathieu Kra, Michel Laurince Yapo
Abstract
In order to assess the diversity of aquatic macroinvertebrates and
their relationship with environmental parameters in three dam lakes (Koko,
Nangakaha and Nindjo) located in the Korhogo department in northern Côte
d'Ivoire, sampling campaigns were carried out from June 2023 to April 2024.
Environmental parameters were measured using appropriate equipment.
Macroinvertebrate sampling was carried out using a hand net and a Van Veen
grab. The results revealed significant variations between lakes for certain
environmental parameters, including conductivity, turbidity, dissolved oxygen
and transparency. The Koko dam lake, located in an urban area, showed highs
mineralisation, high turbidity and low dissolved oxygen concentration,
indicating a degraded ecological state. A total of 4,548 individuals belonging
to 3 phyla, 4 classes, 12 orders, 35 families and 89 taxa were collected.
Insects, particularly Diptera (Chironomidae), dominated richness and abundance,
followed by Gastropoda. Koko Lake recorded the highest abundance (45%), with a
dominance of pollution-tolerant Chironomidae. The Nangakaha dam lake had the
highest diversity indices (Shannon and equitability), reflecting better
ecological conditions. Redundancy analysis (RDA) showed that the distribution
of taxa was strongly correlated with environmental parameters. Chironomidae and
certain molluscs were associated with high mineralisation, while other taxa
were linked to better oxygenated and more transparent waters.
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Pages:39-46
How to cite this article:
Dely Pecosse Boua, Kobenan Mathieu Kra, Michel Laurince Yapo "Diversity and distribution of macroinvertebrates in three dam lakes of korhogo department (Côte d'Ivoire) : Influence of environmental parameters". International Journal of Entomology Research, Vol 10, Issue 5, 2025, Pages 39-46
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