Oikos
O17231
Gols, R., van Dam, N. M., Raaijmakers, C. E., Dicke,
M. and Harvey, J. A. 2009. Are population differences
in plant quality reflected in the preference and performance of two endoparasitoid wasps? – Oikos 118:
733–743.
Appendix 1. Table A1, Table A2 and Figure A1.
Table A1. ANOVA tables on performance parameters of the insects when reared on four different plant populations. Statistical analysis
was performed on log10-transformed development times.
Development time
F-value
Insect species
Source
DF
MS
P. xylostella
Plant
Sex
Plant×Sex
Error
3
1
3
268
6.211E-3
1.40E-5
3.221E-4
5.436E-4
D. semiclausum
Plant
Sex
Plant×Sex
Error
3
1
3
277
P. brassicae
Plant
Sex
Plant×Sex
Error
C. glomerata
Plant
Sex
Plant×Sex
Error
Adult mass
F-value
p-value
DF
MS
p-value
11.4
0.03
0.59
<0.001
0.87
0.62
3
1
3
267
0.00294
6.55074
0.00525
0.00242
1.22
2711
2.17
0.30
<0.001
0.09
1.602E-3
3.452E-4
2.736E-4
1.627E-4
9.85
2.12
1.68
<0.001
0.15
0.17
3
1
3
275
31933
1449800
12478
11612
2.75
125
1.07
0.04
<0.001
0.36
3
1
3
154
2.501E-3
2.370E-3
3.663E-4
1.620E-4
15.4
14.6
2.26
<0.001
<0.001
0.084
3
1
3
154
411.93
1603.27
19.22
31.45
13.1
51.0
0.61
<0.001
<0.001
0.61
3
1
3
336
3.625E-3
1.086E-2
7.57E-5
1.969E-4
18.4
55.2
0.38
<0.001
<0.001
0.76
1
3
3
335
0.14549
1.19771
0.00263
0.00630
23.1
190
0.42
<0.001
<0.001
0.74
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Table A2. ANOVA tables on glucosinolates concentrations measured in leaf tissues of four different plant populations.
Source
Transformation
DF
MS
F-value
p-value
Sinigrin
Population
Error
Arcsin(x × 0.01)
4
61
0.27971
0.01731
16.2
<0.001
Gluconapin
Population
Error
Arcsin(x × 0.01)
4
61
0.13208
0.00082
161
<0.001
Glucobrassicin
Population
Error
Log10
4
61
0.43212
0.04385
9.85
<0.001
Gluconasturtiin
Population
Error
Log10(x +1 )
4
61
0.004149
0.001743
2.38
0.06
Total
Population
Error
4
61
466.5
156.9
2.97
<0.03
Figure A1. Composition of the volatile blend emitted by individual plants (n = 5) from three different B. nigra and one B. juncea population. The day prior to volatile sampling, plants were infested with 10 L3 P. xylostella larvae, which remained on the plant during volatile
collection. Each bar depicts mean peak are g–1 fresh weight of above-ground tissue. Compounds of which the emitted concentrations
differed significantly among the populations are marked with an asterisks (p <0.05). DMNT: (E)-3,4,8-dimethyl-1,3,7-nonatriene.
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