Efficiency of four types of beetles traps in rubber plantation in the Southern of Côte d’Ivoire

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The current study focuses on different types of beetle’s traps in rubber plantations in the localities of Bongo and Toupah, in the south of Côte d’Ivoire. The objective of this work is to determine the most efficient trap for capturing beetles in these agrosystems. Four trapping methods, namely yellow trap on the ground, yellow trap at height, screen trap and pitfall trap were used in plantations of different ages. The investigation resulted in more captures of beetles from the screen traps with means of 236.5 and 365.5 beetles in Toupah and Bongo, respectively. Pitfall traps captured fewer individuals (22.58 and 39.83 individuals from Toupah and Bongo, respectively). Yellow traps on the ground and height captured more individuals in 1 to 5 years aged plantations. Pitfall traps captured more individuals in 6 to 10 year aged plantations and screen traps captured more beetles in the forests. Beetle’s family richness is higher in screen traps with means of 23.83 and 19 families, whereas the pitfall trap captured the fewest beetles’ families with means of 8.58 and 6.58 families captured from Bongo and Toupah, respectively. Yellow ground traps, yellow height traps and screen traps captured more phytophagous beetles. However, pitfall traps captured more predators and fewer phytophagous. The screen trap appeared as the most effective and most suitable trap against beetles in rubber plantations.