RESUMO
Pediculus humanus L. (Psocodea: Pediculidae) can be characterized into three deeply divergent lineages (clades) based on mitochondrial DNA. Clade A consists of both head lice and clothing lice and is distributed worldwide. Clade B consists of head lice only and is mainly found in North and Central America, and in western Europe and Australia. Clade C, which consists only of head lice, is found in Ethiopia, Nepal and Senegal. Twenty-six head lice collected from pupils at different elementary schools in two localities in Algiers (Algeria) were analysed using molecular methods for genotyping lice (cytochrome b and the multi-spacer typing (MST) method. For the first time, we found clade B head lice in Africa living in sympatry with clade A head lice. The phylogenetic analysis of the concatenated sequences of these populations of head lice showed that clade A and clade B head lice had recombined, suggesting that interbreeding occurs when lice live in sympatry.
Assuntos
Infestações por Piolhos/classificação , Pediculus/classificação , Pediculus/genética , Simpatria , Argélia/epidemiologia , Animais , Sequência de Bases , Criança , Citocromos b/genética , DNA Intergênico/genética , Humanos , Proteínas de Insetos/genética , Lansoprazol , Infestações por Piolhos/epidemiologia , Infestações por Piolhos/parasitologia , Dados de Sequência Molecular , Filogenia , Reação em Cadeia da Polimerase , Alinhamento de SequênciaRESUMO
There has been a recent notable increase in scabies and pediculosis pubis and pediculosis capitis. Once the diagnosis is established (preferably by demonstrating the mite or louse), therapy includes consideration of a risk to benefit ratio, explanation of the nature of the infestation to the patient, application of appropriate therapeutic techniques, and follow-up procedures. Resistance of the Sarcoptes mite to modern scabicides has been suggested but not proved. Resistance of the head louse and body louse to modern pediculicides has been reported in other countries but not in the United States.
