Systemic veterinary drugs for control of the common bed bug, Cimex lectularius, in poultry farms

Parasites & Vectors

Table 1 Dose-mortality assays using deltamethrin with adult male bed bugs from an insecticide-susceptible (Harlan) population of Cimex lectularius

Active ingredient	n	LD₅₀, ng (95% CI)^a	LD₉₀, ng (95% CI)^a	LD₉₉, ng (95% CI)^a	Slope ± SEM	χ² (df)	t-ratio^b
Deltamethrin	140	1.4 (1.0, 2.1)	4.0 (2.8, 7.1)	11.8 (5.9, 51.5)	2.5 ± 0.3	5.8 (5)	7.2*

CI Confidence interval, LD₅₀ lethal dose that killed 50% of bed bugs, LD₉₀ lethal dose that killed 90% of bed bugs, LD₉₉ lethal dose that killed 99% of bed bugs, SEM standard error of the mean
^aLD₅₀, LD₉₀, LD₉₉ were estimated from probit analysis. Values are given in nanograms per insect
^bt-Ratio of the slope. Values > 1.96 denote a significant regression at P < 0.05

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