Stratification of entomofauna in a fruit Agrosystem: A case study of a soursop orchard (Annona muricata L., 1753) in M'Brimbo, South Côte d’Ivoire
Johnson Félicia, Yokoli Franck, Kissi Thérèse Appoh Perrine and Koua Kouakou Hervé
Insects play a crucial role in the stability of agricultural ecosystems. Their vertical distribution and abundance are correlated with their bioecology. Knowledge of the agronomic status of insect species in agriculture allows for the evaluation of pest damage and the ecosystem services provided by beneficial insects. Various insect collection techniques have been implemented based on research or management objectives. This study aimed to investigate the abundance, role, and vertical distribution of insects associated with soursop cultivation. The methodology employed utilized colored traps (yellow, blue, and white) and attractants (wine, beer, and water) placed along delimited transects in the study plot. Additionally, a sweep net was used for rapid capture of flying insects not attracted to the traps. Inventory results revealed the diversity of insects in soursop orchards, with a total of 51 insect species distributed across 8 orders identified. Five insect species were common to all collection levels, while some were specific to a single level. Seven species were found exclusively in ground traps, five in trunk-level traps, and two in foliage traps. The study indicated that insect distribution in this agrosystem is influenced by various parameters such as ecology, diet, and ecological niche. Regarding trap selectivity, yellow was the most attractive color among colored traps for insects, while wine proved more effective for solvent traps in capturing insects. The results showed that traps installed on tree trunks collected more insect species (44 species, 69.05% of individuals) compared to ground traps (28 species, 20.81% of individuals) and foliage traps (16 species, 10.08% of individuals). For a rapid biodiversity inventory in fruit agrosystems, trunk-level collection is recommended as the most effective method.
Johnson Félicia, Yokoli Franck, Kissi Thérèse Appoh Perrine, Koua Kouakou Hervé. Stratification of entomofauna in a fruit Agrosystem: A case study of a soursop orchard (Annona muricata L., 1753) in M'Brimbo, South Côte d’Ivoire. J Entomol Zool Stud 2024;12(2):17-22. DOI: 10.22271/j.ento.2024.v12.i2a.9293