Table S3 Relationship between the aphid species Dysaphis plantaginea, D. cf. devecta, and Aphis pomi assessed by Spearman's rank test at the Ticino, Valais, and Zurich site. The average aphid infestation at a study site and within a year was used for correlation analysis. Significant correlations after FDR correction are highlighted in bold. The number of colonies (D. plantaginea), the number of red-curled leaves (D. cf. devecta) and the number of aphids (A. pomi) was taken as measure of aphid infestation.
D. plantaginea / D. cf. devecta / A. pomirs / P / rs / P / rs / P
D. plantaginea
Ticino (n = 143)
Year 1 / - / - / 0.222 / 0.008 / 0.445 / <0.0001
Year 2 / - / - / -0.105 / 0.211 / 0.020 / 0.809
Valais (n = 142)
Year 1 / - / - / 0.021 / 0.801 / -0.029 / 0.733
Year 2 / - / - / 0.147 / 0.081 / 0.137 / 0.105
Zurich (n = 153)
Year 1 / - / - / - / - / 0.083 / 0.308
D. cf. devecta
Ticino (n = 143)
Year 1 / 0.222 / 0.008 / - / - / 0.005 / 0.957
Year 2 / -0.105 / 0.211 / - / - / 0.001 / 0.998
Valais (n = 142)
Year 1 / 0.021 / 0.801 / - / - / 0.107 / 0.204
Year 2 / 0.147 / 0.081 / - / - / 0.063 / 0.460
Zurich (n = 153)
Year 1 / - / - / - / - / - / -
A. pomi
Ticino (n = 143)
Year 1 / 0.445 / <0.0001 / 0.005 / 0.957 / - / -
Year 2 / 0.020 / 0.809 / 0.001 / 0.998 / - / -
Valais (n = 142)
Year 1 / -0.029 / 0.733 / 0.107 / 0.204 / - / -
Year 2 / 0.137 / 0.105 / 0.063 / 0.460 / - / -
Zurich (n = 153)
Year 1 / 0.083 / 0.308 / - / - / - / -