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The bird cherry-oat aphid (Rhopalosiphum padi L.) development on primary host (Prunus padus L.) was studied in Poznan in 2007–2008. First fundatrices of R. padi were observed already on the bird cherry in March in both years. The largest condensation of population was observed in May. At the second decade of May numerous winged morphs were formed and spring migration into the secondary hosts started...
The aphid fauna obtaiend from hazelnut shrubs consisted of 7 species, dominated by the filbert aphid Myzocallis coryli Goetze. The hazelnut aphid (Corylobium avellanae Schrk.) appeared in small counts during the second year of the study. The other species of identified aphids were winged forms, which appeared incidentaly on the monitored hazelnut trees. The highest number of the filbert aphid was...
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