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Table 1. Developmental time (Mean ± SEM, n) and fecundity (Mean ± SEM, n) of aphids that developed as conspecific or heterospecific pairs on either the same tissue for five consecutive days, or on different tissues, of TAM 107 wheat plants. Sg = Schizaphis graminum, Dn = Diuraphis noxia, Rp = Rhopalosiphum padi.
Sg and Sg
Rp and Rp
Dn and Dn
Sg and Dn
Sg and Rp
Sg
Dn
Sg
Rp
Development time
Same tissue
10.50 ± 0.34
10.08 ± 0.33
11.82 ± 0.33 a
11.17 ± 0.40
13.83 ± 0.60
10.60 ± 0.27
10.40 ± 0.34
(12)
(13)
(11)
(6)
(6)
(10)
(10)
Different tissues
11.25 ± 0.41
10.29 ± 0.42
13.67 ± 0.37 b
11.31 ± 0.31
13.77 ± 0.32
10.30 ± 0.34
9.78 ± 0.43
(8)
(7)
(9)
(13)
(13)
(10)
(9)
F (df)
1.98 (1, 18)
0.15 (1, 18)
14.07 (1, 18)
0.07 (1, 17)
0.01 (1, 17)
0.49 (1, 18)
1.30 (1, 17)
P
0.176
0.706
0.015
0.793
0.919
0.493
0.270
Fecundity
Same tissue
30.21 ± 1.46 b
21.54 ± 1.38
14.59 ± 1.03
30.17 ± 2.88
9.33 ± 1.45
30.10 ± 1.33
20.70 ± 3.89
(12)
(13)
(11)
(6)
(6)
(10)
(10)
Different tissues
25.69 ± 1.39 a
22.00 ± 2.65
12.39 ± 1.08
27.69 ± 1.77
11.00 ± 0.72
27.40 ± 1.47
25.00 ± 4.14
(8)
(7)
(9)
(13)
(13)
(10)
(9)
F (df)
4.54 (1, 18)
0.03 (1, 18)
2.17 (1, 18)
0.58 (1, 17)
1.35 (1, 17)
1.86 (1, 18)
0.57 (1, 17)
P
0.047
0.866
0.158
0.457
0.261
0.190
0.459
Means within a column bearing different letters were significantly different (P < 0.05, PROC GLM, LS MEANS)
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