Abstract
This study is devoted to the analysis of statistical data monitoring various aphid species by two distinct traps - suction trap and Lamber's pan trap. As cereals form the most abundant agricultural crop in the Czech Republic the study is focused on the cereal aphids. We primarily investigated following cereal aphid species: bird cherry-oat aphid (Rhopalosiphum padi Linnaeus, 1758), rose-grain aphid (Metopolophium dirhodum Walker, 1849), English grain aphid (Sitobion avenae Fabricius, 1775), and Russian wheat aphid (Diuraphis noxia Kurdjumov, 1913). Marginally, we also included three potato aphid species (Aphis nasturtii Kaltenbach, 1843, Myzus persicae Sulzer, 1776 and Phorodon humuli Schrank, 1801) into the study. Several aspects of aphid life cycle as abundance, flight activity and their migration have been examined in details. We identified the invasion behaviour for cereal aphids with recognized primary migration during the end of June. The applied analysis of the sum of effective temperatures (SET) for first cereal aphid catches revealed the bird cherry-oat aphid (Rhopalosiphum padi Linnaeus, 1758) as the aphid species requiring lower SET for their first catch (SET = 126.2). There was no correlation concerning the altitude, i.e. the location of primary data collection, found within the used data set.