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

Singh, N.; Johnson, D. T.

Larvae. SigniÞcant differences in larval numbers were found in traps treated with pheromone lure as compared with untreated controls for all 4 d (Table 3) . Overall, the baited traps caught three-fold more larvae than untreated controls. Trap catches only decreased two-fold with the introduction of chicks (days 1 and 2 vs. day 3 and 4). The treatment-by-day interaction was not signiÞcant suggesting the stable effect of pher- Fig. 2 . Response of lesser mealworm adults to a range of pheromone lure (lesser mealworm lure) doses, 20 g each component of lesser mealworm lure, 10 g CDV, 2 g fresh CD, and a combination of 20 g lesser mealworm lure with 10 g CDV or 2 g CD in laboratory two-choice pitfall bioassays at air ßow rate of 0.5 liter/min. Lesser mealworm lure contains: (R)-(ϩ)-limonene, (E)-␤-ocimene, (S)-(ϩ)-linalool, (R)-(ϩ)-daucene, and 2-nonanone in 9.6: 60.0: 9.6: 17.3: 3.5 ratios, respectively. CDV contains: 2-methyl-propanoic acid, 2,3-butanediol, butanoic acid, 2-pentanone, 1-octen-3-ol, 2-chlorocyclohexanol, pentanoic acid, and dodecanal in 3.3: 27.9: 10.8: 5.4: 12.1: 17.3: 17.6: 5.6 ratios, respectively. Response Index ϭ (T Ϫ C/Tot)*100, for which T is the number responding to the treatment, C is the number responding to the control, and Tot is the total number of adults released. Data are expressed as means Ϯ SE (N ϭ 4). Bars with different letters are signiÞcantly different (P Ͻ 0.05; Tukey Kramer HSD-test). omone over time (F ϭ 1.80; df ϭ 3, 169; P ϭ 0.14). The larval population distribution did not change signiÞcantly inside the poultry house over the space and time as evident from nonsigniÞcant interactions between block and day (F ϭ 1.73; df ϭ 9, 169; P ϭ 0.08). The treatment-by-block interaction was signiÞcant suggesting the variable effect of pheromone over space (F ϭ 7.30; df ϭ 3, 169; P ϭ 0.0001).