Yarı Sentetik Spinosyn İnsektisit Olan Spinetoram’ın Alman Hamamböceği [Blatella germanica L. (Blattodea: Blatellidae)] Nimflerine Karşı Ölüm Etkisi

Öz

Bu çalışmada laboratuvar koşullarında yarı-sentetik sponisin insektisidi Spinetoram’ın solüsyon halinde üç farklı uygulama yüzeyinde (beton, fayans ve parke) Blatella germanica (L.)’nin nimflerine karşı rezidual kontak toksisitesi araştırılmıştır. Bu bağlamda üç farklı yüzeyde B. germanica’nın 3. ve 4. dönem nimflerine karşı 1, 3, 5, 7 ve 9 gün süreyle Spinetoram’ın 2.5, 5, 7.5, 10, 15, 25, 50, 75 ve 100 mg aktif madde m-2 konsantrasyonlarında biyolojik testler yürütülmüştür. Spinetoram’ın tüm yüzey uygulamalarında, maruz kalma süreleri ve konsantrasyonları, B. germanica nimflerinin ölüm oranları üzerinde önemli etkiye sebep olduğu gözlemlenmiştir. Uygulanan tüm yüzeylerde daha düşük Spinetoram konsantrasyonları (2.5 ve 5 mg m-2) B. germanica nimflerinde düşük ölüm oranına neden olmuştur. Bununla birlikte, 50, 75 ve 100 mg m-2 konsantrasyonları, B. germanica nimflerinin 9 günlük maruz bırakma süresinden sonra % 100 ölüm ya da % 100’e yakın ölüme neden olmuştur. Genel olarak, B. germanica nimflerinin ölüm oranı maruz bırakma süresiyle artarken, nispeten düşük Spinetoram konsantrasyonlarında (7.5, 10, 15 ve 25 mg m-2) % 100 ölüm sağlanamamıştır. Spinetoram uygulanan üç farklı yüzeyde de Spinetoram konsantrasyonlarının B. germanica nimflerine karşı etkinliğinde önemli farklılıklar ortaya çıkmıştır. 100 mg m-2 Spinetoram konsantrasyonunda B. germanica nimflerinin ölüm oranının 5. gün sonunda beton yüzeyde diğer yüzeylere göre daha yüksek olduğu görülmüştür. Bununla birlikte, diğer Spinetoram konsantrasyonlarında, 5. gün sonunda nimflerin ölüm oranı genellikle üç yüzeyde de benzer bulunmuştur. Sonuç olarak, Spinetoram’ın ev zararlısı olan B. germanica’nın mücadelesinde kullanılma potansiyeline sahip olduğu ve bu böceğin mücadelesinde kullanılan geleneksel sentetik kimyasalların kullanımını düşürebileceği ortaya çıkmıştır.

Anahtar Kelimeler

• Spinetoram
• Blatella germanica
• Nimf
• rezidual kontak toksisite

Mortality Effect of Spinetoram, Semi-Synthetic Spinosyn Insecticide, Against German Cockroach [Blatella germanica L. (Blattodea: Blatellidae)] Nymphs

Öz

The study investigated the toxicity of spinosyn (semi-synthetic) insecticide Spinetoram suspension against Blatella germanica (L.) nymphs on three different surfaces; concrete, ceramic and parquet. In this context, biological tests were carried out at 2.5, 5, 7.5, 10, 15, 25, 50, 75, and 100 mg of Spinetoram active substance m-2 concentrations against B. germanica's 3rd and 4th stage nymphs on three different surfaces for 1, 3, 5, 7 and 9 days. In all surface applications of Spinetoram, exposure times and concentrations have been observed to have a significant effect on the mortality rates of B. germanica nymphs. Lower Spinetoram concentrations (2.5 and 5 mg m-2) on all applied surfaces resulted in low mortality in B. germanica nymphs. However, concentrations of 50, 75 and 100 mg m-2 resulted in 100% mortality or near 100% mortality of the B. germanica nymphs after 9 days of exposure. In general, the mortality rate of B. germanica nymphs increased with increasing exposure time, while at relatively low Spinetoram concentrations (7.5, 10, 15, and 25 mg m-2), 100% mortality was not achieved. Significant differences emerged in the effectiveness of Spinetoram concentrations against B. germanica nymphs on three different Spinetoram applied surfaces. At the 100 mg m-2 concentration, the mortality rate of B. germanica nymphs was found to be higher on the concrete surface at the end of the 5th day compared to the other surfaces. However, in other Spinetoram concentrations, nymph mortality at the end of day 5th was generally similar on all three surfaces. As a result, it has been revealed that Spinetoram has the potential to be used in the control of the house pest B. germanica and may reduce the use of traditional synthetic chemicals used in the control of this insect.

Anahtar Kelimeler

• Spinetoram
• Blatella germanica
• nymph
• residual contact toxicity

Kaynakça

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