plodia interpunctella

This study aimed to evaluate different diets effects on the biological parameters of plodia interpunctella (Hubner). Three hosts namely; date, almond and peanut. Results showed that the hatchability percentage, weight per larva, pupation percentage and adult emergence percentage were the highest on almonds diet. Incubation period, generation time and life cycle were shortest in almonds. Also data indicated that almonds were the most preferred host. The efficacy of three microwave powers was investigated against two plodia interpunctella stages. The result cleared that the increase in microwave power and exposure times caused an increase in eggs and larvae reduction rate % and accordingly the microwave power more effective in larvae than egg stage. Also, results showed that there is no harmful effect on the chemical fruits characteristics under microwave treatment.

The oral toxicity of 5 Photorhabdus spp. strains collected in different regions of Korea was determined in the larvae of Plodia interpunctella, Galleria mellonella, Lucilia caesar, and Culex pipiens pallens. When diet or water containing culture media containing 1 of the 5 different strains was ingested by immature insects, the first instar larvae of both G. mellonella and L. caesar

Laboratory studies were carried out on the effect of 50 mm Hg on six important storedproduct pests: Trogoderma granarium , Lasioderma serricorne, Oryzaephilus surinamensis, Tribolium castaneum, Ephestia cautella and Plodia interpunctella. At 30°C and a relative humidity of 55% the egg stage was found to be the most resistant stage in all species, the times needed to obtain 99% mortality being 46, 91, 32, 22, 45 and 49 h, respectively. Additional studies indicated that at lower temperatures or at higher relative humidities the times needed to achieve mortality were prolonged. Treatment time must be based on the sensitivity of the most resistant stage of the most resistant species. However, no less important are temperature and the relative humidity in the chamber, both these parameters being determined by the condition of the commodity. Methods of application of low pressures in commercial flexible chambers named GrainPro CocoonsTM previously known as Volcani CubesTM made of welded P...

... The headspace sample was obtained from vials equilibrated in a 25–26°C sand bath by placing the needle of a Hamilton syringe (gastight, 10 μl capacity, bottom-entry bevel or side-entry bevel as noted on [Table 3] and [Table 4]) (Supelco Co., Bellefonte, Pa) through the ...

... The headspace sample was obtained from vials equilibrated in a 25–26°C sand bath by placing the needle of a Hamilton syringe (gastight, 10 μl capacity, bottom-entry bevel or side-entry bevel as noted on [Table 3] and [Table 4]) (Supelco Co., Bellefonte, Pa) through the ...

Weekly sampling of the Indian meal moth, Plodia interpunctella, was conducted over 15 consecutive weeks at 19 locations within a maize storage facility. Direct sampling consisted of maize samples from two depths from the maize surface, and was compared with three indirect sampling techniques: (1) cardboard traps intended for trapping of late instar larvae and pupae; (2) unbaited sticky traps at two heights above the maize intended for trapping adults; and (3) probe traps inserted into the maize intended for trapping both larvae and adults. Temperature was recorded weekly and maize moisture content every 2 weeks at each sampled location. Total catches for the entire sampling period were highest with cardboard traps followed by maize samples, sticky traps, and probe traps. Spatial statistics were used to examine the distribution pattern of weekly catches for each sampling technique: (1) larvae in both top and bottom maize samples indicated similar aggregated distribution patterns; (2) catches with cardboard traps and sticky traps at both heights suggested a random distribution pattern; and (3) catches with probe traps were considered too low for analysis. For each weekly sampling event, the level of spatial association between sampling techniques was investigated in which the spatial distribution of larvae in top samples was compared with: (1) larvae in bottom maize samples; (2) cardboard trap catches; and (3) adults sticky traps. Catches of adults in low sticky traps were compared with: (4) adults in high sticky traps; (5) cardboard trap catches; and (6) larvae in bottom maize samples. Of the six spatial associations, only larvae in the top and bottom maize samples were significantly associated, while there was no significant spatial association involving catches with indirect sampling techniques. We used response surface regression analysis to evaluate the relative contribution of six explanatory variables in a model fitted to the abundance of larvae in maize samples (order of importance): y-coordinate of sampling locations, vertical position of samples, temperature, number of weekly sampling event, moisture content, and x-coordinate of sampling locations. Using additional response surface regression analyses with the same explanatory variables, we showed that abundance of larvae in maize samples was a poor predictor for the occurrence of P. interpunctella individuals in indirect samples. The implications of different spatial distribution patterns for different sampling techniques of P. interpunctella are discussed.