Üç farklı yüksek ses frekansına maruz kalmış Culex pipiens (L.) (Diptera: Culicidae) larvalarında değişen mortal etkiler

Year 2019, Volume: 44 Issue: 3, 970 - 976, 30.09.2019

Halil Özkurt , Hakan Kavur

https://doi.org/10.17826/cumj.507991

Abstract

Amaç: Çalışmamızın amacı, Culex pipiens larvalarına farklı ses frekansları (ultrasonik değer altı ve üstü), uygulanarak, larvalar üzerindeki mortalite etkisini istatistiksel olarak araştırılmasıdır.

Gereç ve Yöntem: Toplamda sekiz saat süren deneylerimizde, 3 farklı düzeyde (14,8 kHz, 20,0 kHz ve 26.5 kHz) ses frekansı üreten piezo transdüktörlü modifiye kaplarda bulunan 240 adet sivrisinek larvası kullanılmıştır. 

Bulgular: Denemelerimizde kullanılan toplam 240 Culex pipiens larvasının 121’i, uygulanan ses frekanslarının tümünde ölmüştür. İkinci evre larvalar, kullanılan ses frekanslarına hassasiyeti en fazla olan evre olarak tespit edilmiştir. Denememizde, 14,8 kHz’lik ultrasonik ses frekansının, en fazla mortaliteye neden olduğu saptanmıştır.

Sonuç: Çalışmamızda kullandığımız ses frekansları (ultrasonik değer altı ve üstü) sivrisinek larvaları üzerinde değişen oranlarda mortal etkiler göstermiştir. Farklı mortalite değerleri, sivrisinek larvaları arasında akustik rezonans değerlerinin farklı olduğunu göstermektedir. Ayrıca erken evre larvalarda (L1 ve L2) mortalitenin yüksek olması çeşitli morfolojik sebeplerden meydana gelebilmektedir. 

Keywords

Culex pipiens, Ultrasonik, Mortalite, Frekans, Larva, Ses

Variable mortal effects in larvae of Culex pipiens (L.) (Diptera: Culicidae) exposed to three different high sound frequencies

Abstract

Purpose: The aim of our study was to evaluate the mortality rate of Culex pipiens larvae which were subjected to ultrasonic values above and below sound frequencies.

Materials and Methods: In our lasting eight-hour experiments, 240 mosquito larvae in piezo-transducer modified vessels producing sound frequency at three different levels (14.8 kHz, 20.0 kHz and 26.5 kHz) were used. 

Results: Of the 240 Culex pipiens larvae used in our experiments, 121 of them died in all of the applied sound frequencies. The second stage larvae were found to be the most sensitive to the frequencies used. In our study, 14.8 kHz ultrasonic sound frequency was found to cause the highest mortality.

Conclusion: Sound frequencies under and above ultrasonic show a varying proportions mortal effect on mosquito larvae. Different mortality values show that acoustic resonance values are different among the mosquito instars. Furthermore, the high mortality rate in early stage larvae (L1 and L2) may be due to various morphological reasons.

Keywords

Culex pipiens, Ultrasonic, Mortality, Frequency, Larvae, Sound

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