Table 2.

Summary of EPG parameters associated with phloem feeding in B. tabaci during the 6h recording.

Parameter1		Probability2				Biotype	Host Plant (Mean ± SE)
		Biotype	Host	Biotype*Host			Tomato	Cabbage	Cucumber	Cotton	Poinsettia
11	Total duration of E(pd)1	0.892	<0.001		0.048	B	0.6±0.2bc3	3.0±0.4a	0.1±0.0c	0.7±0.2b	0.4±0.1bc
						Q	1.1±0.3b	2.3±0.5a	0.2±0.1c*4	0.8±0.2bc	0.4±0.1bc
12	Number of E(pd)1	0.375	<0.001		0.178	B	4.3±1.0b	16.7±2.2a*	1.2±0.4c	5.1±1.6b	3.9±0.9b
						Q	4.2±0.7b	9.9±1.4a	2.0±0.6c*	4.2±1.0bc	3.5±0.7bc
13	Mean duration of E(pd)1	<0.001	<0.001		0.157	B	0.1±0.0b	0.2±0.0a	0.1±0.0b	0.1±0.0ab	0.1±0.0ab
						Q	0.2±0.0a*	0.3±0.0a	0.1±0.0b*	0.2±0.0ab*	0.1±0.0b
14	Total duration of E(pd)2	0.077	<0.001		0.258	B	39.4±9.1ab	90.8±9.8a	34.3±9.5b	19.4±5.8b	28.5±7.7b
						Q	67.4±10.2ab	82.9±11.7a	26.2±6.5c	28.4±5.0bc	45.1±7.0ab*
15	Number of E(pd)2	0.413	<0.001		0.174	B	4.3±1.0b	16.7±2.2a*	1.2±0.4c	5.0±1.6b	3.9±0.9b
						Q	4.2±0.7b	9.9±1.4a	2.1±0.6c	4.2±1.0bc	3.5±0.7bc
16	Mean duration of E(pd)2	0.001	<0.001		0.007	B	13.0±3.4b	7.8±1.6b	39.7±7.7a*	9.1±4.9b	10.2±2.6b
						Q	22.4±4.3a*	10.6±2.0a	16.8±2.8a	11.1±2.2a*	21.2±4.7a*
17	Potential E(pd)2 index	0.633	<0.001		0.006	B	0.2±0.1ab	0.3±0.0a	0.3±0.1ab*	0.1±0.0b	0.2±0.0ab
						Q	0.3±0.0a	0.3±0.0a	0.1±0.0b	0.1±0.0b	0.3±0.1a
18	Total duration of E(pd)	0.062	<0.001		0.263	B	37.7±8.9ab	93.8±9.9a	34.4±9.5b	20.1±5.9b	28.9±7.7b
						Q	68.5±10.3ab	85.2±11.8a	26.5±6.5c	29.2±5.1bc	45.4±7.0ab*
19	Mean duration of E(pd)	0.005	<0.001		0.007	B	13.1±3.4b	8.0±1.6b	39.8±7.7a	9.2±4.9b	10.3±2.6b
						Q	22.6±4.3a*	10.9±2.0a	17.1±2.8a	11.3±2.2a*	21.3±4.7a*
205	Percentage of whitefly reaching phloem phase	-	-		-	B	94.1a	100a	50b	84.6ab	88a
						Q	92.0a	100a	57.7b	76.9ab	95.4a

¹ For parameters associated with time including 'durations' and 'time to an event', all units are minutes.

The parameters 11-19 were calculated for each insect and then averaged over all insects. Parameter 20 was calculated for all insects

of each treatment.

Total number = number of occurrences of a specific waveform

Total duration = total time in a waveform (summed over all waveform occurrences)

Mean duration = average waveform duration (total time divided by number of occurrences)

Potential E(pd)2 index = (total time in E(pd)2)/(Total recording time minus time to first E(pd)) (van Helden et al. 2000)

Percentage of whitefly reaching phloem phase = whitefly which reaching phloem phrase/all whiteflies tested in the treatment

² Probabilities calculated from general linear model (Two-Way ANOVA) for a 2 x 5 factorial design (parameters 11-19).

Significant differences are highlighted in red (P ≤ 0.05).

³ Letters immediately after the mean values were derived from the comparisons of different host plants within the same whitefly species.

Means followed by the same letters do not differ significantly (Tukey test, P ≤ 0.05).

⁴ Comparison of feeding behaviors of B. tabaci B and Q adults on each of the five host plants. Significant differences are marked

with an asterisk (Independent-Samples T test, P ≤ 0.05)

⁵ Parameter 20 was analyzed with a Chi-square test