Table 1. Duration, viability of larval and pupal stages of Gonipterus platensis on Eucalyptus hosts.
Duration (days) of the first (I1), second (I2), third (I3) and fourth (I4) instars and of the larval (LS) and pupal stage (PS), and larva to adult (LA) (mean ± SE), amplitudes (days) (A), and viabilities (V, %) of Gonipterus platensis (Coleoptera: Curculionidae) on Eucalyptus camaldulensis, Eucalyptus grandis, Eucalyptus urophylla, and on the E. grandis × E. urophylla hybrids ‘VR3748’ and ‘H13’ at 26 °C and 14:10 h (L:D) photoperiod.
| Parameters | E. camaldulensis | E. grandis | ‘VR3748’ | ‘H13’ | E. urophylla |
|---|---|---|---|---|---|
| I11 | 4.7 ± 0.2c | 9.9 ± 0.5a | 5.8 ± 0.1b | 5.2 ± 0.1bc | 4.5 ± 0.1c |
| I21 | 3.6 ± 0.1d | 9.1 ± 0.3a | 4.9 ± 0.2bc | 5.7 ± 0.2ab | 3.9 ± 0.2cd |
| I31 | 5.0 ± 0.3b | 10.0 ± 0.2a | 5.2 ± 0.2b | 5.0 ± 0.2b | 3.6 ± 0.1c |
| I41 | 4.4 ± 0.3b | 11.5 ± 0.5a | 5.0 ± 0.2b | 5.0 ± 0.2b | 4.3 ± 0.1b |
| LS1 | 17.9 ± 0.2c | 37.6 ± 0.8a | 21.3 ± 0.3b | 20.8 ± 0.4b | 15.7 ± 0.2d |
| V(%)2 | 78.0 ± 4.9a | 24.0 ± 4.0b | 76.0 ± 4.9a | 79.0 ± 5.6a | 93.0 ± 2.6a |
| PS1 | 32.6 ± 0.4bc | 37.5 ± 1.7a | 33.5 ± 0.5ab | 35.3 ± 0.5a | 31.4 ± 0.4c |
| V(%)2 | 33.3 ± 6.5b | 50.0 ± 3.4b | 65.8 ± 3.3a | 74.7 ± 3.1a | 74.2 ± 6.0a |
| LA1 | 50.5 ± 0.5c | 75.1 ± 2.1a | 54.8 ± 0.6b | 56.1 ± 0.7b | 47.2 ± 0.9c |
| A | 47–54 | 66–91 | 50–69 | 49–76 | 43–60 |
| V(%)2 | 27.0 ± 4.2b | 12.0 ± 3.1b | 50.0 ± 4.5a | 59.0 ± 8.1a | 69.0 ± 3.1a |
Notes.
Means followed by the same letter, per row, do not differ by the 1Nemenyi and 2Tukey’s range tests, both at p < 0.05.