Toxicity and repellency of different insecticides to Odontotermes obesus (Rambur, 1842) (Blattodea: Termitidae: Macrotermitinae)

Yıl 2019, Cilt: 43 Sayı: 3, 241 - 251, 01.09.2019

Naeem Iqbal Abid Mahmood Alvı Shafqat Saeed Abdul Rashıed Qamar Saeed Waqar Jaleel Khalid Ali Khan Hamed A. Ghramh

https://doi.org/10.16970/entoted.519906

Cited By: 2

Öz

Fungus-growing termites are important pests for buildings andagriculture in Asia and Africa. This study assessed four insecticides (fipronil 5% SC, imidacloprid 20 SL, thiamethoxam 25 WG and chlorfenapyr 360 SC) for their toxicity and repellency to the fungus-growing termite, Odontotermes obesus (Rambur, 1842) (Blattodea: Termitidae: Macrotermitinae). The study was conducted at Ghazi University, Dera Ghazi Khan, Pakistan fromSeptember-October, 2016 and was undertaken to identify effective termiticides along with their optimal concentrations for future use in baits and localized treatments. The chemicals assessed were differed significantly in their toxicity. Chlorfenapyr and thiamethoxam were more toxic and faster acting with lower LC₅₀ and LT₅₀ values than imidacloprid and fipronil. The four chemicals were statistically similar at each concentration. Odontotermes obesus was not repelled by 0-20 mg/l chlorfenapyr, 0-40 mg/l fipronil, 0-80 mg/l imidacloprid or 0-20 mg/l thiamethoxam. These results suggest that chlorfenapyr, imidacloprid and thiamethoxam may be used as soil termiticides, whereas fipronil can be used both as soil termiticide and in termite baiting programs.

Anahtar Kelimeler

Fungus-growing termites, neurotoxins, soil treatment, termite baiting

Destekleyen Kurum

Higher Education Commission, Pakistan, Grant Project No: 21-631 SRGP/R&D/HEC/2015

Proje Numarası

Higher Education Commission, Pakistan, Grant Project No: 21-631 SRGP/R&D/HEC/2015

Teşekkür

Authors are thankful to Higher Education Commission for providing funds for this study (Project No. 21-631). HAG and KAK extend their appreciation to the Deanship of Scientific Research at King Khalid University. We also gratefully acknowledge the cooperation and assistance of C. D. (Doug) Howick for his helpful review of an earlier draft of the manuscript.

Odontotermes obesus (Rambur, 1842) (Blattodea: Termitidae: Macrotermitinae)’a karşı farklı insektisitlerin zehir ve kaçırıcı özellikleri

Öz

Mantar yetiştiren termitler, Asya ve Afrika'daki tarımsal bölgelerin ve binaların önemli zararlılarıdır. Bu çalışmada, dört farklı insektisitin (fipronil 5% SC, imidacloprid 20 SL, thiamethoxam 25 WG ve chlorfenapyr 360 SC) mantar yetiştirici termit, Odontotermes obesus (Rambur, 1842) (Blattodea: Termitidae: Macrotermitinae) üzerindeki zehir ve kaçırıcı etkileri değerlendirilmiştir. Çalışma, yemlerin ve yerel uygulamaların gelecekteki kullanımları için etkili termisitlerin belirlenmesi ve bunların optimal dozlarının saptanması amacıyla Eylül-Ekim 2016'da Pakistan’ın Dera Ghazi Khan şehrindeki Ghazi Üniversitesi’nde yürütülmüştür. Değerlendirilen kimyasalların zehirliliklerinde önemli farklılıklar görülmüştür. Chlorfenapyr ve thiamethoxam daha düşük LC₅₀ ve LT₅₀ değerleri ile daha fazla zehirli ve daha etkili olurken; imidacloprid ve fipronil daha yüksek LC₅₀ ve LT₅₀ değerleri ile nispeten daha az zehirli ve daha az etkili olarak tespit edilmiştir. Dört kimyasal da istatistiksel olarak her bir dozda birbirleriyle eşit miktarda bulunmuştur. Odontotermes obesus için kaçırıcı olmayan veya çok az kaçırıcılık gösteren chlorfenapyrin 0-20 mg/l dozları, fipronilin 0-40 mg/l dozları, imidacloprid 0-80 mg/l dozları ve thiamethoxamın 0-20 mg/l dozlarında herhangi bir tercih edilmeme durumu görülmemiştir. Bu sonuçlar, Chlorfenapyr, imidaclopridve thiamethoxam toprak termitisitleri olarak ve fipronilinin ise hem toprak termitisiti olarak hem de termit yem programlarında kullanılabileceğini göstermektedir.

Anahtar Kelimeler

Mantar yetiştirici termitler, sinir zehirleri, toprak uygulaması, termit yemi

Proje Numarası

Higher Education Commission, Pakistan, Grant Project No: 21-631 SRGP/R&D/HEC/2015

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