Studies on the insect-resistance to insecticides : II. Resistance of human body louse, Pediculus humanus corporis de Geer, collected from different sources
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چکیده
منابع مشابه
The Experimental Infection of the Human Body Louse, Pediculus Humanus Corporis, with Murine and Epidemic Louse-borne Typhus Strains
Experiments are described which demonstrate that human body lice (Pediculus humanus corporis), were infected experimentally with murine and epidemic louse-borne strains of typhus fever by feeding on suitably prepared rabbits. Details of the two methods of infection, the "bleb technique" and the "I.V. technique," are presented. It is concluded that the experimental infection of human lice with t...
متن کاملToxicity of Five Herbal Extracts against Head Louse (Pediculus Humanus Capitis De Geer.: Phthiraptera) in Vitro
Head lice infestation caused by Pediculus humanus capitis De Geer. (Phthiraptera) is one of the most important public health problem in children worldwide. Currently, head lice resistance to chemical pediculicide are increasing, thus new alternative pediculicides from herb or plant are needed for head lice treatment. The aim of this study were to evaluate toxicity of five herbal extracts from A...
متن کاملPrevalence and levels of permethrin resistance in Pediculus humanus capitis De Geer (Anoplura: Pediculidae) from Buenos Aires, Argentina.
Permethrin has been used extensively for control of Pediculus humanus capitis De Geer (Anoplura: Pediculidae) in Argentina since 1990, resulting in the development of resistance to this and other pyrethroids. This resistance was first detected in some field populations in 1997. A survey for resistance in Buenos Aires in 2001 revealed significant resistance levels in lice on children at 24 of 26...
متن کاملPermethrin-resistant head lice (Anoplura: Pediculidae) in Argentina are susceptible to spinosad.
The insecticidal activity of spinosad was evaluated against susceptible and permethrin-resistant human lice. In a permethrin-susceptible strain of the body louse, Pediculus humanus humanus L. (Anoplura: Pediculidae), the toxicity of spinosad was similar to that established for permethrin, with an LD50 value of 1.2 ng/insect and 2.4 ng/insect, respectively. Topical application of spinosad to pop...
متن کاملLetter: High-level of Heteroplasmy in the Mitochondrial Cox1- Minichromosome of the Human Body Louse, Pediculus humanus, and the Human Head Louse, Pediculus capitis
The mitochondrial (mt) genome of bilateral animals typically consists of a single chromosome, ~16 kb long, and contains 37 genes. Variation in mt gene sequence within an individual, i.e. heteroplasmy, is common in bilateral animals but usually occurs at very low levels. In the lineage that led to the human body louse, the typical mt chromosome has fragmented into 18 minichromosomes: each minich...
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ژورنال
عنوان ژورنال: Medical Entomology and Zoology
سال: 1953
ISSN: 0424-7086,2185-5609
DOI: 10.7601/mez.4.54_1