In-field production of parasitoids of Dysaphis plantaginea by using the rowan aphid Dysaphis sorbi as substitute host

A system was developed to provide the parasitic wasp Ephedrus persicae Froggatt (Hymenoptera: Braconidae: Aphidiinae), which attacks the rosy apple aphid Dysaphis plantaginea (Passerini) (Homoptera: Aphididae), with the alternative host Dysaphis sorbi Kaltenbach (Homoptera: Aphididae) in apple orchards. Rowan trees (Sorbus aucuparia L.) arranged along the side of an unsprayed orchard were artificially infested in late February 2002 with eggs of D. sorbi. Colonies of D. sorbi successfully developed from the introduced eggs and persisted on several trees until the end of June. The only primary parasitoid species emerging from a sample of mummified aphids collected in spring from the infested rowan trees was the braconid wasp species E. persicae. In a host-switching experiment, nymphs of D. plantaginea proved suitable for female parasitoids originating from mummified D. sorbi. A series of mummies collected from the rowan trees in early summer contained diapausing parasitoids and hyperparasitoids that only hatched in April of the following spring. These observations suggest the possibility of establishing a local population of E. persicae in apple orchards, so that D. plantaginea can be readily attacked by diapause-emerging parasitoids in early spring

Religion and Fundamental Rights in European Politics: Convergences and Divisions at the European Parliament

European legislators must increasingly deal with issues related to fundamental rights. Religion is a frequent topic obliging them to do so. It is not directly part of the EU's competences but is a source of values underlying policy choices and a tricky political object. Relying on the findings of a survey about what Members of the European Parliament (MEPs) believe and what they do with these beliefs, the article analyzes potential tensions created by religion in the implementation of human rights by the EU. A first part shows how and to what extent European law meets religion, and how it leaves ample room for flexibility but also for divergent interpretations. A second part states that MEPs agree largely on the principle of separation between politics and religion, but may be divided when it comes to drawing boundaries between the two domains. The conclusion points out the limits of the rule of law to prevent conflicts and suggests that human rights may inspire support as well as cause resistance to Europeanization. © 2013 Springer Science+Business Media Dordrecht.SCOPUS: ar.jinfo:eu-repo/semantics/publishe