Table 1 Nymphal durations of viruliferous, non-viruliferous, and control populations of Sogatella furcifera at different temperatures
Temperature | Population | Number | Nymphal stage duration (days ± S.E.) * | ||||
|---|---|---|---|---|---|---|---|
2nd instar1) | 3rd instar2) | 4th instar3) | 5th instar4) | Total5) | |||
20°C | Viruliferous | 61 | 6.9 ± 0.3a | 5.3 ± 0.2a | 5.0 ± 0.1a | 6.4 ± 0.1a | 23.6 ± 0.5a |
Non-viruliferous | 12 | 7.8 ± 1.8a | 6.3 ± 0.3a | 4.8 ± 0.3ab | 6.3 ± 0.3ab | 25.0 ± 1.5a | |
Control | 36 | 3.8 ± 0.1b | 3.5 ± 0.1b | 4.0 ± 0.2b | 5.6 ± 0.2b | 16.8 ± 0.4b | |
25°C | Viruliferous | 32 | 2.4 ± 0.2a | 2.2 ± 0.1b | 2.5 ± 0.0b | 3.6 ± 0.1a | 11.0 ± 0.4a |
Non-viruliferous | 37 | 2.4 ± 0.1a | 2.6 ± 0.1a | 3.6 ± 0.1a | 3.6 ± 0.1a | 10.6 ± 0.2a | |
Control | 38 | 2.4 ± 0.1a | 2.1 ± 0.1b | 2.4 ± 0.1b | 3.4 ± 0.1a | 10.2 ± 0.2a | |
28°C | Viruliferous | 41 | 1.2 ± 0.1a | 1.9 ± 0.1a | 2.0 ± 0.1a | 3.0 ± 0.1a | 8.4 ± 0.1a |
Non-viruliferous | 36 | 1.6 ± 0.1a | 1.9 ± 0.1a | 1.9 ± 0.1a | 3.0 ± 0.1a | 8.5 ± 0.2a | |
Control | 38 | 1.8 ± 0.1a | 1.8 ± 0.1a | 2.0 ± 0.1a | 3.0 ± 0.1a | 8.4 ± 0.2a | |