Table 1.

Mean ± SE number of whiteflies* landing on (a) Tomato chlorosis virus (ToSRV)-infected and (b) Tomato severe rugose virus (ToCV)-infected tomato leaves, mock-inoculated tomato leaves, and brown background (blank) 6 h after release from the launch platform. Plexiglass sheets containing a coating of mineral oil were placed on top of the leaves to provide a uniform landing surface (65 × 65 cm) and avoid the confounding effects of leaf olfactory cues. Each assay was repeated four times.

(a)
Treatment	Non-Viruliferous (n = 48)	Viruliferous (n = 48)
ToSRV-infected	8.85 ± 1.34 a	8.98 ± 1.29 a
Mock-inoculated	4.17 ± 0.76 b	3.29 ± 0.44 b
Blank	1.71 ± 0.40 c	1.67 ± 0.24 c
df	2141	2141
F	40.087	37.910
P	<0.0001	<0.0001
(b)
ToCV-infected	8.35 ± 0.97 a	7.48 ± 0.74 a
Mock-inoculated	5.85 ± 0.68 b	5.65 ± 0.86 b
Blank	2.15 ± 0.32 c	4.81 ± 0.88 b
df	2141	2141
F	27.237	5.791
P	<0.0001	0.0038

* Mean values represent the number of whiteflies landing per target (11 × 11 cm). Means followed by the same letter within columns indicate no significant (p > 0.05) differences between treatments according to an ANOVA followed by a Fisher Protected LSD test. Data was transformed by ln(x+1) before analysis. Infection status of viruliferous whiteflies was verified by PCR as described in Section 2.1.