Investigating the side effects of lufenuron and hexaflumoron toxins on the biological parameters of Habrobracon hebetor (Say) (Hym.: Braconidae) in laboratory conditions
Subject Areas : entomology and othea arthropods
f. damghanizade
1
(
Department Entomology. Islamic Azad University. Arak Branch. Arak. Iran
)
r. vafaie
2
(
دانشگاه آزاد اراک
)
S. Chavoshi
3
(
استادیار، گروه حشره شناسی، دانشگاه آزاد اسلامی، واحد اراک، ایران
)
Keywords:
Abstract :
The wasp Habrobracon hebetor (Say) (Hym.: Braconidae) is an external and social larve stage parasitoid of a large number of pests, including the raisin moth Ephestia figulilella (Gregson) (Lep.: Pyralidae). Wasps of the Braconidae family are one of the most important pest parasitoids. The performance of parasitoids can be affected by use of insecticides. In order to simultaneously use of biological control agents and pesticides in pest management, it is necessary to know the effect of pesticides on biological control agents. In this study, the side effects of Lufenuron and Hexaflumuron on the biological parameters of the parasitoid wasp H. hebetor in laboratory conditions and the host flour moth Ephestia kuehniella (Zeller) (Lep.,: Pyralidae) in the form of a two-factor randomized complete design, the first factor is the type of insecticide (Lufenuron and Hexaflumuron each with a consumption concentration of 500ppm) and the second factor is the wasp life stage including three stages (larve, pupa and adult insect) were performed with three repetitions (5pairs of wasps per repetition). Hexaflumuron and Lufenuron insecticides are chitin synthesis inhibitors and belong to the group of insect growth regulators. Consumption of these two compounds disrupts the normal activity of the internal secretory systems and disrupts the growth and development of insects. The results of the present study showed that the insecticides Lufenuron and Hexaflumuron have an effect on the life span parameters, the average total egg, the number of daily eggs, the hatching rate and the sexual population ratio of the wasp H. hebetor. Both insecticides caused a decrease in the mentioned parameters, and this decrease was more observed in Hexaflumuron insecticide than in Lufenuron insecticide. Also, the life stages of the insect affected the above parameters and minimal effects and changes were obtained in the pupal stage.
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