Table 2 Fitness parameters (mean ± standard error of the mean) for Dysaphis plantaginea reared on plants belonging to three Malus sylvestris populations (Danish, French and Romanian, i.e. hereafter referred as to “Syl_Dk”, “Syl_Fr”, “Syl_Ro”, respectively) and to the Malus domestica genepool (“Dom”).

From: Genetic structure of Malus sylvestris and potential link with preference/performance by the rosy apple aphid pest Dysaphis plantaginea

Parameters

GLM/Cox models P value

Dom

Syl_Dk

Syl_Fr

Syl_Ro

n = 25

n = 28

n = 29

n = 28

Daily fecundity

0.69 (NS)

2.33 ± 0.26

2.46 ± 0.26

2.38 ± 0.22

2.08 ± 0.22

Survival (days)

0.34 (NS)

9.20 ± 0.34

9.75 ± 0.14

9.28 ± 0.39

9.50 ± 0.31

  

n = 56

n = 73

n = 80

n = 80

Aphid weight (µg)

0.043 (*)

557.88 ± 39.05 a

427.92 ± 28.54 b

476.30 ± 22.84 ab

490.26 ± 32.20 ab

  1. The letters within a row indicate significant differences associated with pairwise comparisons using estimated marginal means.
  2. *P < 0.05; **P < 0.01; ***P < 0.001 associated with GLM models (using respectively a quasi-Poisson for daily fecundity and Gamma distribution aphid weight) or Cox models (for survival) (degree of freedom = 3 for each test).
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