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用１．０μｇ／ｍｍ２剂量的黄华碱和野靛碱处理的构树枝分别喂饲桑天牛，黄华碱不表现拒食作用，但野靛碱表现出显著的拒食作用。同样剂量条件下，两种生物碱均能使桑天牛的产卵量和卵孵化率显著下降，但没有引起死亡。用８．０×１０－２，４．０×１０－２，２．０×１０－２，１．０×１０－２，５．０×１０－３μｇ／ｍｍ２剂量的印楝提取物（含ａｚａｄｉｒａｃｈｔｉｎ１０％）处理的构树枝喂饲桑天牛，前二种剂量引起１００％死亡率，２．０×１０－２μｇ／ｍｍ２剂量引起８０％死亡率并导致雌虫不再产卵，而后两种剂量引起的死亡率为３０％和０％，并导致产卵量和卵孵化率较对照急剧地下降。报道了双稠哌啶类生物碱对昆虫引起产卵量和卵孵化率下降作用及天牛科中印楝提取物抑制产卵和卵孵化的作用。
Scutellaria barbata fed with 1.0μg / mm2 doses of felbromine and indomethacin-treated boughs were fed with flos-paeoniflorin, respectively, while fosfatin did not show antifeeding effect, but indocyanine showed a significant antifeedant effect. Under the same dosage, both alkaloids could significantly reduce the oviposition rate and hatching rate of mulberry, but did not cause death. Neem extracts (containing a dose of 8.0 × 10 -2, 4.0 × 10 -2, 2.0 × 10 -2, 1.0 × 10 -2, 5.0 × 10 -3 μg / mm 2 Azadirachtin 10%) treated branches of Morus alba were fed with the first two doses resulting in a 100% mortality and a dose of 2.0 x 10-2 μg / mm2 causing a 80% mortality and causing the females to no longer lay their eggs, whereas the latter two Dose-induced mortality rates were 30% and 0%, resulting in a sharp drop in egg production and egg hatch rates over the control. The effect of double-diketopiperidine alkaloids on the fecundity and egg hatching rate of insects and the suppression of egg hatching by neem extract from Cerambycidae were reported.