Evaluation of the Effects of Different Ultrasonic and Under Ultrasonic Limits Sound Frequencies on the Larvae of Culex pipiens (L.) (Diptera: Culicidae)

Year 2019, Volume: 9 Issue: 4, 2026 - 2034, 01.12.2019

Halil Ozkurt Hakan Kavur

https://doi.org/10.21597/jist.541901

Abstract

Known as vector arthropods, mosquitoes transmit
several types of diseases to human. Applied vector programmes worldwide against
mosquitoes have different agents such as microorganisms, chemicals, natural
enemies, physical barriers, etc. We aimed to determine the effects of varying
sound frequencies above and below ultrasonic level (10.8 kHz, 20.0 kHz and 24.5
kHz), on Culex pipiens larvae with
three replicates. In total, 720 mosquito larvae located in
modified container with produced three different level sound frequencies piezo
transducers were used in our experiment lasting eight hours. Also, the same
number of larvae were used as control groups. Second instar larvae
were detected more sensitive to used frequencies level. Also, in terms of
larval mortality, the most effective sound frequency was 10.8 kHz in which 129
larvae died. It was concluded that the mortal effect was not related to the change in
the frequency of sound; and this effect was related to acoustic resonance of
the larvae used in the study.

Keywords

Mosquitoes, Culex pipiens, Sound Frequencies, Ultrasonic, Acoustic Resonance

Ultrasonik ve Ultrasonik Sınır Altındaki Farklı Ses Frekanslarının Culex pipiens (L.)’in (Diptera: Culicidae) Larvaları Üzerine Etkilerinin Değerlendirilmesi

Abstract

Vektör eklembacaklılar olarak bilinen sivrisinekler, insanlığa çeşitli
hastalıkları bulaştırırlar. Dünya çapında, sivrisineklere karşı uygulanan
mücadele programları, mikroorganizmaları, kimyasalları, doğal düşmanlarını,
bazı fiziksel bariyerler gibi farklı ajanlardan oluşmaktadır. Çalışmamızda,
ultrasonik ses seviyenin üstündeki ve altındaki değişen ses frekanslarının Culex pipiens larvalarına olan etkilerini belirlemeye çalıştık. Toplamda sekiz saat süren deneylerimizde, 3 farklı
düzeyde (10.8 kHz, 20.0 kHz ve
24.5 kHz), 3 tekrarda, ses frekansı üreten piezo transdüktörlü modifiye kaplarda bulunan 720 adet sivrisinek
larvası kullanılmıştır. Kontrol grubu olarak da aynı sayıda larva
kullanılmıştır. Culex pipiens’in ikinci evre larvalarının,
kullanılan frekans seviyelerine daha duyarlı olduğu bulunmuştur. Ayrıca larva
mortalite açısından en etkili ses frekansı, 129 ölü larvanın gözlemlendiği,
10.8 kHz olarak tespit edilmiştir. Kullanılan üç ayrı frekans için larvalar
üzerinde gözlemlenen mortal etkinin, değişen düzeylerde uygulanan ses
frekansları ile doğrudan ilişkili olmadığı, larvaların her birinin akustik
rezonans sınırları ile ilgili olduğu tarafımızca tespit edilmiştir.

Keywords

Sivrisinek, Culex pipiens, Ses Frekansı, Ultrasonik, Akustik Rezonans

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