Table 4. Effects of purified Cry2Aa incorporating into artificial diet on life-table parameters of Cyrtorhinus lividipennis.
| Parameters | Treatments | ||
| Control | 300 µg/ml Cry2Aa | 40 µg/ml PA | |
| 2nd instar developmental time (days ± SE)a | 2.1±0.15 (35) | 2.3±0.13 (35) | 2.4±0.21 (23) |
| 3rd instar developmental time (days ± SE)a | 2.5±0.10 (28) | 2.6±0.13(29) | 4.2±0.36 (13)** |
| 4th instar developmental time (days ± SE)a | 3.1±0.17 (21) | 3.1±0.24 (22) | 7.0±0.58 (3)** |
| 5th instar developmental time (days ± SE)a | 4.2±0.18 (20) | 4.1±0.20 (20) | — |
| 2nd instar-adult developmental time (days ± SE)a | 11.8±0.40 (20) | 11.7±0.40 (20) | — |
| Preimaginal survival (%)b | 55.6 | 55.6 | 0.0 |
| Male weight (mg ± SE)c | 0.41±0.02 | 0.40±0.02 | — |
| Female weight (mg ± SE)c | 0.58±0.02 | 0.54±0.02 | — |
Nymphs of C. lividipennis were fed with an artificial diet containing 300 µg/ml Cry2Aa or 40 µg/ml PA (positive control). Pure diet served as a negative control (N = 36). The experiment lasted until adult eclosed. Statistical comparisons were made separately for each of the insecticidal compounds comparing with the control. Asterisks denote significant differences: P<0.01.
a
Mann–Whitney U-test with Bonferroni correction (adjusted α = 0.025).
b
Chi-square test with Bonferroni correction (adjusted α = 0.025).
c
Student's t-test.