Attractiveness of an Aggregation Pheromone Lure and Chicken Droppings to Adults and Larvae of Alphitobius diaperinus (Coleoptera: Tenebrionidae)

Singh, N.; Johnson, D. T.

Statistical Analyses. Laboratory Two-Choice Pitfall Bioassay. Attractiveness or repellency of treatments was expressed as a response index (RI) shown by Suzuki and Sugawara (1979) . It was calculated as RI ϭ (T Ϫ C/Tot)*100, where T is the number responding to the treatment, C is the number responding to control, and Tot is the number of adult/larvae released per replicate into the test arena. Positive RIs indicate attraction to the treatment and negative RIs indicate repellency; and the values range from Ϫ100 (complete repellency) to 100 (complete attraction). The mean RIs among the treatments were compared using the nonparametric KruskalÐWallis test followed by Tukey Kramer honestly signiÞcant difference (HSD) for multiple comparisons (P ϭ 0.05) (JMP 2009).