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Pre-laying period, egg-laying number and hatching rate of H. axyridis. (A) Pre-oviposition period, numbers of samples for each treatment = 36. (B) In a single trial lasting 42 days of eggs laid by H. axyridis, numbers of samples for each treatment = 36. (C) Hatching rate, numbers of samples for each treatment = 50. Line bars represent standard error of the mean. Bars with different letters are significantly different (Tukey–Kramer tests, P < 0.05).
