Insecticidal activity of pyrethrum extract and its four insecticidal constituents against house flies. I.—Preparation and relative toxicity of the pure constituents; Statistical analysis of the action of mixtures of these components

1962 ◽  
Vol 13 (3) ◽  
pp. 172-185 ◽  
Author(s):  
R. M. Sawicki ◽  
M. Elliott ◽  
J. C. Gower ◽  
M. Snarey ◽  
E. M. Thain
Keyword(s):  
Statistical Analysis ◽  
Insecticidal Activity ◽  
Relative Toxicity ◽  
House Flies

scholarly journals Chemical Composition and Insecticidal Properties of Essential Oils of Piper septuplinervium and P. subtomentosum (Piperaceae)

2014 ◽  
Vol 9 (10) ◽  
pp. 1934578X1400901
Author(s):  
Mónica Constanza Ávila Murillo ◽  
Luis Enrique Cuca Suarez ◽  
Jairo Alonso Cerón Salamanca
Keyword(s):  
Statistical Analysis ◽  
Essential Oils ◽  
Insecticidal Activity ◽  
Spodoptera Frugiperda ◽  
Insect Pests ◽  
Pearson Correlation ◽  
Oil Composition ◽  
Aerial Parts ◽  
Leaf Oil ◽  
Main Component

Essential oils of Piper subtomentosum (leaves and inflorescences) and Piper septuplinervium (aerial parts) were analyzed by GC-MS; sixty-three compounds were determined, representing 92.0%, 86.9 %, and 91.8 % of the total relative oil composition of the leaves, inflorescences, and aerial parts, respectively. The most abundant component in the aerial parts and inflorescence oils was α-pinene (27.3%, 21.0%, respectively), and δ-cadinene was the main component of the leaf oil. Insecticidal activity of the essential oils were determined on the Spodoptera frugiperda second instar larvae; the essential oil from the aerial parts of P. septuplinervium was the most active against insect pests (LC50= 9.4 μL/L of air). Statistical analysis by direct Pearson correlation showed that the insecticidal activity of the essential oils was primarily due to camphene and α- and β-pinene. The effect of the oils on the insect life cycle was also evaluated, and in some cases, a delay in growth and inhibition of the oviposition in the females were observed.

The Relative Toxicity of Some Aryl Analogs of Allethrin to House Flies

1954 ◽  
Vol 47 (5) ◽  
pp. 888-890
Author(s):  
W. A. Gersdorff ◽  
Norman Mitlin
Keyword(s):  
Relative Toxicity ◽  
House Flies

Relative Toxicity of Allethrin Analogs to House Flies

1951 ◽  
Vol 44 (1) ◽  
pp. 70-73 ◽  
Author(s):  
W. A. Gersdorff ◽  
Norman Mitlin
Keyword(s):  
Relative Toxicity ◽  
House Flies

scholarly journals The Relative Toxicity to House Flies of the Methyl and Ethyl Analogs of Allethrin

1953 ◽  
Vol 46 (6) ◽  
pp. 945-948 ◽  
Author(s):  
W. A. Gersdorff ◽  
Norman Mitlin
Keyword(s):  
Relative Toxicity ◽  
House Flies

Reversibility of the knockdown effect at application of aerosols against pyrethroid-resistant house flies

2021 ◽  
pp. 30-36
Author(s):  
Tatyana Alekseevna Davlianidze ◽  
Keyword(s):  
Nervous System ◽  
Insecticidal Activity ◽  
Natural Populations ◽  
Insect Nervous System ◽  
Knockdown Resistance ◽  
Russian Market ◽  
House Flies ◽  
System Sensitivity ◽  
Flying Insects ◽  
Knockdown Effect

Knockdown resistance to pyrethroids and pyrethrins is the first sign of insecticide resistance, suggesting a decrease in insect nervous system sensitivity. On the Russian market of insecticides, there are many products in the aerosol package intended for the destruction of flying insects, which include pyrethroids, which provide a quick knockdown effect in insecticide susceptible insect strains. In resistant populations, in many cases, the reversibility of paralysis is observed, which indicates insufficient effectiveness of insecticidal products. The insecticidal activity of four products in aerosol package containing pyrethroids or pyrethrins in various concentrations on houseflies in natural populations was studied in comparison with the insecticide susceptible against laboratory on strain S-NIID. The most effective formulation was on the basis of natural pyrethrins. The reversibility of paralysis of resistant populations was detected using all aerosols and amounted to 0–37 % for the Kaluga strain, 10–93 % for the Krasnogorsk, KSK-1 0–87 %, KSK-2 20–99 %, S-NIID 0 %.

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