Diversity and dynamics of insect pests of paddy rice stored in the city of Issia; Central-West of Côte D’Ivoire

Paddy rice stocks are attacked by pests that sometimes cause enormous damage. This study aims to assess the diversity and abundance of insect pests of stored paddy rice in the city of Issia. Three samples in three kilograms were taken per bag at different levels of the bag and sorted manually in three stores in the city. The collected insects were examined using a Binocular magnifying glass in the laboratory. Overall, 4867 insects were inventoried. They are all beetles belonging to three families; Bostrichydae (Rhyzoperta dominica); Tenebrionidae (Tribolium chestnut); Curculiondae (Sitophilus oryzae L and Sitophilus zeamais). Data analysis showed that Tenebrionidae slightly predominate with 36.78%; followed by Bostrichydae with 35.63% and finally Curculiondae with 27.59. The study revealed that environmental conditions and storage duration influence the multiplication and evolution of insect populations in stocks.