Propilen Oksit Fumigasyonunun Plodia interpunctella (Hubner) (Lepidoptera: Pyralidae) Ölümleri Üzerine Etkileri

Öz

Bu çalışma 2014-2015 yıllarında Kahramanmaraş Sütçü İmam Üniversitesi Ziraat Fakültesi Bitki Koruma Bölüöü Entomoloji Labaratuvarı’nda gerçekleştirilmiştir. Bu çalışmanın amacı, Plodia interpunctella (Hubner) (Lepidoptera: Pyralidae)'nın etkin kontrolü için metil bromüre (MeBr) alternatif bir fumigant olarak propilen oksidin (PPO) uygulanabilirliğini değerlendirmek ve farklı regresyon teknikleri kullanarak P. interpunctella böceklerinin ölüm oranlarını modellemektir. Yapılan çalışmada; PPO'nun biyolojik etkinliği, kısa maruz kalma süresi (4 saat) altında üç farklı koşulda test edilmiştir: normal atmosferik basınçta (yalnızca PPO), düşük basınçta (PPO+vakum) ve karbon dioksit (CO2) ile zenginleştirilmiş bir atmosferde (PPO+CO2). PPO'ya yönelik tüm uygulamalarda, PPO; farklı hacim aralıklarına sahip farklı mikro şırıngalar kullanılarak yedi veya daha fazla konsantrasyonda doğrudan fümigasyon çemberine uygulanmıştır: sırasıyla yumurtalar için 2.5-25 µl l-1, larvalar için 1.5-45 µl l-1, pupalar için 1.5-30 µl l-1 ve erginler için 0.5-15 µl l-1. Elde edilen sonuçlar, tek başına PPO, PPO+vakum ve PPO+CO2 uygulamalarının sırasıyla yumurtalarda 25 µl l-1, 20 µl l-1 ve 20 µl l-1 konsantrasyonlarında; larvalarda 45 µl l-1, 30 µl l-1 ve 40 µl l-1 konsantrasyonlarında; pupalarda 30 µl l-1, 15 µl l-1 ve 25 µl l-1 konsantrasyonlarında; ve erginlerde 15 µl l-1, 10 µl l-1 ve 10 µl l-1 konsantrasyonlarında %100 ölüm sağladığını göstermektedir. Böcek ölümleri için geliştirilen regresyon modelleri, genellikle üstel ve üçüncü dereceden polinom fonksiyonlarıyla tanımlandığında daha iyi bir uyum gösterdiğini ortaya koymaktadır. Özetle, yapılan bu çalışma PPO uygulamalarının hızlı böcek kontrolünde özellikle Kuru meyve güvesinde umut vadeden bir potansiyel olduğunu ve karantina amaçları için büyük öneme sahip olduğunu göstermektedir.

Anahtar Kelimeler

• Fumigant
• kuru incir
• kuru meyve güvesi
• modelleme
• ölüm orani

The Effects of Propylene oxide Fumigation on the Mortality of Plodia interpunctella (Hubner) (Lepidoptera: Pyralidae)

Abstract

This study was carried out in 2014-2015 at Kahramanmaraş Sütçü İmam University, Faculty of Agriculture, Department of Plant Protection, Entomology Laboratory. This study aims to evaluate the viability of propylene oxide (PPO) as an alternative fumigant to methyl bromide (MeBr) for the efficient control of Plodia interpunctella (Hubner) (Lepidoptera: Pyralidae) and to model the mortality rates of P. interpunctella insects using different regression techniques. The biological effectiveness of PPO was assessed across all life stages of P. interpunctella during a brief exposure period (4 hours) under three conditions: normal atmospheric pressure (PPO alone), low pressure (PPO+Vacuum), and an atmosphere enriched with carbon dioxide (CO2) (PPO+CO2). For all PPO treatments, PPO was directly introduced into the fumigation chamber at seven or more concentrations using different micro-syringes of different volume ranges: 2.5-25 µl l-1, 1.5-45 µl l-1, 1.5-30 µl l-1, and 0.5-15 µl l-1 for eggs, larvae, pupae, and adults, respectively. The results indicate that 100% mortality was observed in eggs at concentrations of 25 µl l-1, 20 µl l-1 and 20 µl l-1; in larvae at concentrations of 45 µl l-1, 30 µl l-1 and 40 µl l-1; in pupae at concentrations of 30 µl l-1, 15 µl l-1 and 25 µl l-1; and in adults at concentrations of 15 µl l-1, 10 µl l-1 and 10 µl l-1 for the PPO alone, PPO+Vacuum, and PPO+CO2 treatments, respectively. The results obtained from the developed regression models for insect mortality reveal that these models generally exhibited a better fit when described by exponential and third-order polynomial functions. In summary, this study indicates that PPO treatments hold significant promise for rapid insect control, particularly in the case of the Indian meal moth, rendering them invaluable for quarantine purposes.

Keywords

• Indian meal moth
• dried figs
• fumigant
• modelling
• mortality

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