Assessing the diversity and abundance of aquatic insects odoponyi seasonal stream in nagongera subcounty, tororo district
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Date
2024
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Busitema University
Abstract
Aquatic insects are fundamental components in aquatic ecosystems due to their significant roles that they play in these habitats which mainly ecosystem health bio-monitoring. This study aimed to assess the diversity and abundance of aquatic insects in Odoponyi seasonal stream in Nagongera Subcounty, Tororo District. Sampling was conducted at multiple sites, above 100m apart and insect samples were identified upto family level and quantified. A total of seventy-four (74) insects has been collected from the selected sites of Odoponyi seasonal stream in Nagongera Subcounty which includes three orders and eleven families. Across this aquatic habitats, hemiptera(30) and Odonata (33) were more at site 1 than site 2 and 3, while the least order recorded was coleoptera with nine (11) insect species collected. Results on family relative abundance indicate that Notonectidae family had the greatest relative abundance (36.49%) among the aquatic insects collected, followed by Coenagrionidae and Libellulidae family (18.92%), dysticidae(9.46%), corduliidae(4.05%), Aeshinidae, Nepidae and Gyrinidae(2.70%) and finally Gerridae, Hydrophilidae and and Hydraenidae with the least relative abundance (1.35%) along the stream. The diversity indices indicate higher dominance of aquatic insects at site 1 (0.4386) than site 2 (0.3633) and site 3 (0.36). However, site 2 and site 3 had higher diversity (1.055) and evenness (0.954) than site 1 (0.9038) and evenness (0.823). Further efforts should be fostered in terms of duration for data collection and using other methods for data collection since this data was collected using kick net method. Preferably for better results, a hydraulic sampling device ought to be used.
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Kuloba, I. (2024). Assessing the diversity and abundance of aquatic insects Odoponyi Seasonal Stream in Nagongera Subcounty, Tororo District [Undergraduate, Research Report]. Busitema University