Effect of Anthropogenic Activities on Diversity and Abundance of Hemiptera, Diptera and Hymenoptera in Three Contrasting Habitats within a Tertiary Institution in Oye-Ekiti, Ekiti State, Nigeria

The objective of this paper was to evaluate the effect of anthropogenic activities on diversity and abundance of Hemiptera, Diptera and Hymenoptera in three contrasting habitats within a tertiary institution in Oye-Ekiti, Ekiti State, Nigeria using appropriate standard methods including using pitfall traps, jarring and active hunting. Results obtained reveal that a total of 2370 individuals belonging to 3 orders, 20 families and 40 species were recorded. Across the three study sites, Camponotus pennysylvanicushad the highest relative abundance of 42.3700%, 45.393% and 40.361% in Site 1, Site 2 and Site 3 respectively. Diptera had the highest Shannon index and evenness index while Hymenoptera had the highest number of individuals. This indicates that although Hymenoptera had the highest abundance, Diptera had the greatest species diversity and evenness. Results of this study show that Site 1 had the highest abundance (1173) while Site 3 had the lowest abundance (166). The result of percentage composition revealed that Site 1 had the highest percentage composition of Diptera (43%), Site 2 had the highest percentage composition of Hymenoptera (62%) while Site 3 had the highest percentage composition of Hemiptera (70%). However, Site 3 had the lowest percentage composition of Hymenoptera (3%) and Diptera (23%) respectively. The results indicate potential ecological imbalances and suggest that Site 3 may be more ecologically diverse or less disturbed compared to Sites 1 and 2.