Antifeedant and repellency effect of plant solutions on Cydalima perspectalis (Walker) (Lepidoptera: Crambidae) larvae and adults

عنوان دوره: دومین کنگره بین المللی حشره شناسی ایران

Cydalima perspectalis (Walker) (Lepidoptera: Crambidae), pest threatening of hyrcanian boxwood tress is native to Asia was first reported from Germany and Netherlands in 2007 and then quickly spread across Europe and causing severe damage to native boxwoods first time has been reported fromsome areas of Mazandaran inMay 2016. So that these living fossils will be endangered. Using this new pest control solutions that are compatible with forest ecosystem will help to preserve plant and animal species and also will not have damages resulting from the use of chemical pesticides. In this study the effect of purely plant solution (Plants native to Iran and soluble compounds are in the patent) generated by the group was studied to control boxwood moth in laboratory and field. Two, Three and four instar larvae were collected from Kelarabad and Sisara in Mazandaran and were kept hungry 8 hours before the test. 20 larvae of each age were placed in three containers with 3 plants boxwood (1- control 2- sprayed with a first solution 3- sprayed with a second solution in different doses) and the number of larvae were attracted to the various box plants and their leaves feed rate (mm) was recorded after 24 h. In another experiment 10 moths (5 females and 5 males) were placed in a closed area that includes boxwood plants were sprayed with herbal solution 2 and control plants. The moths for 3 to 10 days were allowed to oviposit and their behavior was observed. The ovipositing rate of females on control and spraying plants were estimated. The experiment was repeated 4 times. The results showed that the plant solution 2 at high doses property has repellent and anti-feeding rate of 95% for 2 and 3 juveniles ages and 90% for 4 age of larvae and 80% of 2 and 3 instar larvae were died after 4 days and the 4 age larvae were died after 6 days without eating. The results of field experiments showed that different ages of larvae had been sprayed on trees showed 90% mortality and there was no significant difference between the studied areas. The oviposition rate of adults that had been sprayed by plant solutions were 90% less than the control. Therefore, it is suggested using the sustainable natural methods such as plant solutions that are not harmful.

boxwood moth؛ plant solutions؛ repellency؛ anti-feedant؛ anti-oviposition