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- Ki Jung Nam; Jim Hardie
- Physiological entomology 2014 v.39 no.2 pp. 143-152
- Prunus padus; Prunus virginiana; Rhopalosiphum padi; adults; artificial diets; barley; beans; genotype; grasses; growing season; host plants; leaves; morphs; nymphs; parturition; plant extracts; progeny; seedlings
- ... Host acceptance by gynoparae and winged virginoparae of the bird cherry‐oat aphid Rhopalosiphum padi (L.) is investigated utilizing leaves and aqueous extracts of the primary and secondary hosts, as well as nonhost plants. Gynoparae are specialized to reproduce on bird cherry Prunus padus L., whereas virginoparae reproduce and feed on various grasses. Host acceptance is assessed using levels of re ...
- Frauke Fedderwitz; Niklas Björklund; Velemir Ninkovic; Göran Nordlander
- Physiological entomology 2014 v.39 no.2 pp. 103-110
- Hylobius abietis; Picea abies; adults; egg production; females; forest regeneration; girdling; locomotion; males; plant response; seedlings; Europe
- ... The pine weevil [Hylobius abietis (L.); Coleoptera: Curculionidae] has a high economic impact on forest regeneration in Europe. The general biology of the pine weevil has received considerable attention, although there is insufficient knowledge about its diel behaviour and time budget. Therefore, in the present study, the feeding and locomotion behaviour of individual adult weevils on Norway spruc ...