  Combining intercropping with semiochemical releases: optimization of alternative control of Sitobion avenae 1 in wheat crops in China; ; et al in Entomologia Experimentalis et Applicata (2011) Detailed reference viewed: 21 (3 ULg)Role of prey–host plant associations on Harmonia axyridis and Episyrphus balteatus field distribution and efficiency.; Haubruge, Eric  ; Francis, Frédéric in Entomologia Experimentalis et Applicata (2008), 128 Detailed reference viewed: 10 (0 ULg) Discrimination of parasitized aphids by a hoverfly predator: effects on larval performance, foraging, and oviposition behavior; Verheggen, François ; Francis, Frédéric et alin Entomologia Experimentalis et Applicata (2008), 128(1), 73-80 The choice of oviposition site by female aphidophagous predators is crucial for offspring performance, especially in hoverflies whose newly hatched larvae are unable to move over large distance. Predator ... [more ▼] The choice of oviposition site by female aphidophagous predators is crucial for offspring performance, especially in hoverflies whose newly hatched larvae are unable to move over large distance. Predator and parasitoid interactions within the aphidophagous guild are likely to be very important in influencing the choices made by predatory hoverfly females. In the present study, the foraging and oviposition behavior of the aphidophagous hoverfly Episyrphus balteatus DeGeer (Diptera: Syrphidae) was investigated with respect to the parasitized state of its aphid prey, Acyrthosiphon pisum Harris (Homoptera: Aphididae), that were parasitized by Aphidius ervi Haliday (Hymenoptera: Aphidiidae). We also recorded the number of eggs laid by hoverfly females when subjected to parasitized aphids. Furthermore, we studied the influence of being fed with parasitized aphids on hoverfly larval performance. Hoverfly females did not exhibit any preference for plants infested with unparasitized or aphids parasitized for 7 days. On the other hand, plants infested with mummies or exuvia were less attractive for E. balteatus. These results were correlated with (i) the number of eggs laid by E. balteatus females and (ii) larval performance. Thus, our results demonstrate that E. balteatus behavior is affected by parasitoid presence through their exploitation of aphid colonies. Indeed, hoverfly predators select their prey according to the developmental state of the parasitoid larvae. [less ▲] Detailed reference viewed: 47 (6 ULg)Predatory hoverflies select their oviposition site according to aphid host plant and aphid species; Verheggen, François ; Francis, Frédéric et alin Entomologia Experimentalis et Applicata (2007), 125(1), 13-21 The hoverfly Episyrphus balteatus De Geer (Diptera: Syrphidae) is an abundant and efficient aphid-specific predator. Several aphidophagous parasitoids and predators are known to respond positively to ... [more ▼] The hoverfly Episyrphus balteatus De Geer (Diptera: Syrphidae) is an abundant and efficient aphid-specific predator. Several aphidophagous parasitoids and predators are known to respond positively to aphid-infested plants. Semiochemicals from the latter association usually mediate predator/parasitoid foraging behavior toward sites appropriate for offspring fitness. In this study, we investigated the effect of aphid host plant and aphid species on foraging and oviposition behavior of E. balteatus. Behavioral observations were conducted using the Noldus Observer v. 5.0, which allows observed insect behavior to be subdivided into different stages. Additionally, the influence of aphid species and aphid host plant on offspring fitness was tested in a second set of experiments. Acyrthosiphon pisum Harris and Megoura viciae Buckton were equally attractive for E. balteatus whereas Aphis fabae Scopoli (all Homoptera: Aphididae) were less attractive. These results were correlated with (i) the number of eggs laid, which was significantly higher for the two first aphid species, and (ii) the fitness of hoverfly larvae, pupae, and adults. Two solanaceous plant species, Solanum nigrum L. and Solanum tuberosum L. (Solanaceae), which were infested with Myzus persicae Sulzer (Homoptera: Aphididae), were also compared using the same approach. Discrimination between these two M. persicae host plants was observed, with S. tuberosum being preferred as an oviposition site by the predatory hoverfly. Larval and adult fitness was correlated with the behavioral observations. Our results demonstrated the importance of the prey-host plant association on the choice of the oviposition site by an aphid predator, which is here shown to be related to offspring fitness. [less ▲] Detailed reference viewed: 71 (8 ULg)Mechanisms for tolerance to diatomaceous earth between strains of Tribolium castaneum; Haubruge, Eric ; in Entomologia Experimentalis et Applicata (2001), 101 Detailed reference viewed: 5 (1 ULg)Mortality in Oryzaephilus surinamensis following short-term exposure to conditioned kernels by high-density cultureMignon, Jacques ; Haubruge, Eric ; et alin Entomologia Experimentalis et Applicata (1996), 80(3), 555-557 Detailed reference viewed: 17 (5 ULg) |
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