Effects of 5 different insecticides on mortality of the Leafroller parazitoid Itoplectis maculator (Fabricius, 1775) (Ichneumonidae, Hymenoptera)

Abstract

In this study, effects of five different insecticides used in orchards on mortality of the parasitoid Itoplectis maculator of the leafroller pests [Archips rosana (Linnaeus, 1758) (Lepidoptera: Tortricidae)] were evaluated. Insecticides were applied to adult parasitoids in particular doses using a petri dish bioassay technique. Experiments were performed in five replicates and observed deaths were recorded periodically for 24 hours. Diazinon, Dichlorvos and Deltamethrin caused a 100% mortality rate at the end of the first 8-hour period, whereas Lambda-cyhalothrin and Alpha-cypermethrin caused the same mortality at the end of 24 hours. The ranking according to their effects on duration of mortality was Dichlorvos>Diazinon>Deltamethrin>Alpha-cypermethrin>Lambda-cyhalothrin. All these information will contribute to the development of biological control methods in orchards against leafroller pests.

Keywords

• Alpha-cypermethrin
• Diazinon
• Dichlorvos
• Deltamethrin
• Itoplectis maculator
• Lambda-cyhalothrin

Beş farkli insektisitin Yaprakbükenler üzerinde parazitoid olan Itoplectis maculator (Fabricius, 1775) (Ichneumonidae, Hymenoptera)’un mortalitesine etkisi

Öz

Bu çalışmada, yaprakbükenler [Archips rosana (Linnaeus, 1758) (Lepidoptera: Tortricidae)] üzerinde parazitoid olan Itoplectis maculator üzerinde meyve bahçelerinde kullanılan 5 farklı insektisitin mortalite süresine etkisi değerlendirildi. Petri içinde ergin parasitoidler uygulama dozundaki insektisetlerle muamele edildi. Deneyler beş tekrarlı olarak gerçekleştirilerek 24 saat boyunca gözlenen ölümler belirli periyotlarda kayıt edildi. Diazinon, Dichlorvos ve Deltamethrin ilk 8 saatlik periyot sonucunda %100 ölüme yol açarken Lambda-cyhalothrin ve Alpha-cypermethrin 24 saatlik periyodun sonunda ölüme neden olduğu belirlenmiştir. Mortalite süresine göre Dichlorvos > Diazinon > Deltamethrin > Alpha-cypermethrin > Lambda-cyhalothrin sıralaması bulunmuştur. Bütün bu bilgiler meyve bahçelerinde yaprakbükenler ile biyolojik mücadele yöntemlerinin geliştirilmesine katkı sağlayacaktır.

Anahtar Kelimeler

• Alpha-cypermethrin
• Diazinon
• Dichlorvos
• Deltamethrin
• Itoplectis maculator
• Lambdacyhalothrin

Kaynakça

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