丁香对赤拟谷盗卵和幼虫的致死作用

Lethal effects of Syzygium aromaticum on the eggs and larvae of Tribolium castaneum

在室内条件下,研究了丁香干燥花蕾粉末对赤拟谷盗卵和幼虫的影响。结果表明:丁香对赤拟谷盗卵孵化有明显的抑制作用,对赤拟谷盗幼虫有致死作用并且全部致死时间随着赤拟谷盗幼虫龄期的增大而延长,龄期越小的幼虫其全部致死时间越短。

Syzygium aromaticum is a traditional medicinal material, which has been used as a disinfectant, antiseptic and spice. The influence of medicinal material S. aromaticum （clove） on the eggs and larvae of Tribolium castaneum was studied in the laboratory. Clove was crushed and the ambient temperature was （30±1） ℃. The results were shown as. a. both day 1 and day 4 eggs dealt with clove couldn＇t hatch, whereas the eggs dealt with wheat flour hatched normally; b. the larvae of different instars dealt with the same dosage （3g） of clove had different death rates. All of the 1st instar larvae died 48h after treatment. The death rate of the 3rd instar larvae was higher than that of the 4th instar larvae, while the death rate of the 5th instar larvae and the 6th instar larvae had no significant difference from each other but lower than that of the 4th instar larvae. Furthermore, the older the larvae, the longer time the larvae would take to die completely.