Inventory of Odonata in Kisangani city and its surroundings: A study of fish ponds and fields (Democratic Republic of the Congo)

Alfred Sembaito Toengaho; Célestin Danadu Mizani; Onésime Mubenga Kankonda; Jonathan Kosele Kada; Jean Ngabu Chembu; Ernest Lukosha Tambwe; Alidor Busanga Kankonda

doi:10.51867/ajernet.7.2.103

Autores

Alfred Sembaito Toengaho University of Kisangani, Democratic Republic of the Congo
Célestin Danadu Mizani University of Kisangani, Democratic Republic of the Congo https://orcid.org/0009-0007-7535-4099
Onésime Mubenga Kankonda University of Kisangani, Democratic Republic of the Congo https://orcid.org/0000-0003-3362-8198
Jonathan Kosele Kada University of Kisangani, Democratic Republic of the Congo
Jean Ngabu Chembu University of Kisangani, Democratic Republic of the Congo
Ernest Lukosha Tambwe Higher Institute of Agricultural Studies of Bengamisa, (ISEA-Bengamisa), Democratic Republic of the Congo
Alidor Busanga Kankonda University of Kisangani, Democratic Republic of the Congo

DOI:

https://doi.org/10.51867/ajernet.7.2.103

Palavras-chave:

Bioindicators, Faunal Survey, Fields, Habitat Disturbance, Kisangani (DR Congo), Odonata, Ponds

Resumo

This study assessed the diversity and distribution of Odonata in two habitat types in Kisangani and its surroundings, Democratic Republic of the Congo: fish ponds and fields. Sampling was conducted between January and March 2025 using sweep nets. A total of 939 individuals were recorded, belonging to two suborders, three families, 23 genera, and 42 species. Fish ponds showed higher species richness, with 42 species and 725 individuals, compared with 31 species and 214 individuals in fields. The assemblages were dominated by Anisoptera, particularly the family Libellulidae. In fish ponds, Chalcostephia flavifrons was the dominant species, accounting for 38.06% of individuals, whereas Palpopleura portia dominated in fields, representing 20.09%. Diversity indices demonstrated high diversity in both habitats, with Shannon index values of 2.628 for fish ponds and 2.739 for fields. Evenness was also high, indicating a relatively balanced distribution of individuals among species. The Jaccard similarity index revealed 65% similarity between the two habitats. These results indicate that fish ponds constitute favourable habitats for maintaining Odonata diversity, probably due to the permanence of water and the presence of aquatic vegetation. Fields also supported notable diversity, but were dominated by species more tolerant of disturbance. This study, therefore, provides baseline data for monitoring Odonata and for the ecological management of aquatic and agricultural habitats in Kisangani. We recommend that local environmental and agricultural management decision makers incorporate the protection of fish ponds and limit the excessive use of agrochemical inputs in agricultural fields in order to preserve habitat heterogeneity and maintain Odonata diversity as reliable indicators of freshwater ecosystem integrity.

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