Acta Entomologica Sinica (2005) 48, 526-530

Shu-Qing Wan, Han-Hong Xu, Shan-Huan Zhao, Zhi-Sheng Jiang, Zhi-Zhen Shang and Zhun Liu (2005)
[Contact toxicity of polyacetylenes to Periplaneta americana and their effects on AChE and ATPase]
Acta Entomologica Sinica 48 (4), 526-530
Abstract: The contact toxicity of 11 synthetic polyacetylenes was tested to newly hatched Periplaneta americana larvae with the method of drug film. The results showed these compounds, 1-t-butyl-4-hydroxymethyl-diacetylene, 1-benzyl-4-methyl-diacetylene and di-ethyl-2-propargyl-thiophosphate caused high mortality of over 70% to the larvae at 20 µg/cm². The LC₅₀ of 1-benzyl-4-methyl diacetylene and di-ethyl-2-propargyl thiophosphate was 3.91 µg/cm² and 1.50 µg/cm², respectively. The effect on AChE of the insect indicated that 1-t-butyl-4-hydroxymethyl-diacetylene, 1-phenyl-4-o-nitrophenyl-diacetylene and di-ethyl-2-propargyl-thiophosphate inhibited its activity, and the inhibition rate was 12.00%, 27.24% and 62.22%, respectively. To ATPase, 1-t-butyl-4-hydroxymethyl diacetylene and di-ethyl-2-propargyl thiophosphate inhibited the activity of Na⁺K⁺ATPase, and the inhibition rate was 44.55% and 31.44%, respectively; but 1-phenyl-4-(3,4-methylenedioxy)-phenyl-diacetylene and 1-phenyl-4-m-nitrophenyl-diacetylene enhanced the activity of the enzyme, and the activation rate was 24.98% and 20.61%; 1-t-butyl-4-hydroxymethyl-diacetylene, 1-phenyl-4-p-methoxyphenyl-diacetylene and 1-phenyl-4-o-nitrophenyl-diacetylene inhibited the activity of Ca²⁺Mg²⁺ATPase, and the inhibition rate was 49.02%, 38.53% and 35.32%, respectively; but other compounds enhanced activity of the enzyme, among them the highest activity was observed with 1-phenyl-4-(3,4-methylenedioxy)-phenyl-diacetylene, and the activation rate was 81.12%.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Chinese)
Database assignments for author(s): Zhisheng Jiang

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Periplaneta americana