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Table 3 Interaction analysis of EPG variables among biotypes, sexes and virus status on Bemisia tabaci by multivariate statistics

From: Changes in Bemisia tabaci feeding behaviors caused directly and indirectly by cucurbit chlorotic yellows virus

Variables P value1
Biotype Sex Insect status Plant status Biotype * Sex Biotype * Insect status Biotype * Plant status Sex * Insect status Sex * Plant status Biotype * Sex * Insect status Biotype * Sex * Plant status
Non-phloem variables
 1. Duration of 1st probe (min) 0.243 0.106 0.892 < 0.001 0.002 0.363 0.349 0.490 0.349 0.774 0.799
 2. Total number of C (#) 0.538 0.007 0.001 0.002 0.252 0.087 0.381 0.240 0.714 0.491 0.478
 3. Total duration of C (min) 0.029 0.115 0.399 0.063 0.993 0.307 0.853 0.650 0.520 0.430 0.193
 4. Total number of pd. (#) 0.696 0.911 < 0.001 0.007 0.685 0.052 0.783 0.649 0.926 0.761 0.357
 5. Time to 1st E from 1st probe (min) 0.018 0.174 0.281 0.044 0.030 0.484 0.869 0.194 0.312 0.551 0.442
 6. Total number of probes before 1st E (#) 0.316 0.407 0.003 0.557 < 0.001 0.161 0.105 0.264 0.934 0.299 0.397
Phloem variables
 7. Total duration of 1st E1 (min) 0.616 0.491 0.002 < 0.001 0.951 0.121 0.120 0.417 0.286 0.685 0.959
 8. Total number of E1 (#) 0.311 0.474 0.594 0.584 0.710 0.010 0.027 0.865 0.079 0.586 0.075
 9. Total duration of E1 (min) 0.723 0.965 < 0.001 < 0.001 0.249 0.604 0.365 0.738 0.822 0.108 0.027
 10.Total number of E2 (#) 0.043 0.943 0.098 0.916 0.849 < 0.001 0.018 0.122 0.001 0.820 0.011
 11. Total duration of E2 (min) < 0.001 0.799 0.469 0.098 0.845 0.929 0.973 0.043 0.065 0.087 0.280
 12. Total number of E1 after 1st E2 (#) 0.010 0.525 0.512 0.690 0.490 < 0.001 0.001 0.678 0.026 0.169 0.030
 13. Total duration of E1 after 1st E2 (min) 0.138 0.468 0.079 < 0.001 0.356 0.990 0.566 0.007 0.046 0.126 0.015
 14. Percentage of E (%)2 0.173 0.039 0.089 < 0.001 0.024 0.150 0.951 < 0.001 0.047 0.002 0.730
  1. 1p values calculated using multivariate analysis with main effects of biotype (B and Q), sex (male and female), insect status (non-viruliferous and viruliferous), plant status (non-viruliferous and viruliferous) and their interaction. Bolded P values are significant at P<0.05. 2Percentage of E (%) = equals the percentage of total duration of E (E1 + E2). EPG waveforms are as: C = pathway; pd. = potential drop (intracellular puncture); E1 = phloem salivary secretion; E2 = phloem sap ingestion. E = E1 + E2