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Table 1 Nymphal durations of viruliferous, non-viruliferous, and control populations of Sogatella furcifera at different temperatures

From: Effects of southern rice black-streaked dwarf virus on the development and fecundity of its vector, Sogatella furcifera

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
  1. * In the same column at the same temperature, mean values (± SE) followed by different letters differ significantly at the P = 0.05 level by SNK (q-test).
  2. 1) One way ANOVA: F = 45.0, df = 2, P = 0.0001 for 20°C; F = 0.04, df = 2, P = 0.9581 for 25°C; F = 2.5, df = 2, P = 0.0914 for 28°C.
  3. 2) One way ANOVA: F = 33.7, df = 2, P = 0.0001 for 20°C; F = 10.0, df = 2, P = 0.0001 for 25°C; F = 0.3, df = 2, P = 0.7229 for 28°C.
  4. 3) One way ANOVA: F = 9.0, df = 2, P = 0.0003 for 20°C; F = 151.9, df = 2, P = 0.0001 for 25°C; F = 0.5, df = 2, P = 0.5825 for 28°C.
  5. 4) One way ANOVA: F = 5.7, df = 2, P = 0.0052 for 20°C; F = 3.3, df = 2, P = 0.0397 for 25°C; F = 0.3, df = 2, P = 0.7547 for 28°C.
  6. 5) One way ANOVA: F = 54.8, df = 2, P = 0.0001 for 20°C; F = 2.7, df = 2, P = 0.0776 for 25°C; F = 0.1, df = 2, P = 0.8658 for 28°C.