Prime

Type your tag names separated by a space and hit enter

Pediculus humanus capitis (head lice) and Pediculus humanus humanus (body lice): response to laboratory temperature and humidity and susceptibility to monoterpenoids.

Abstract

Human pediculosis is produced by Pediculus humanus humanus (Linnaeus 1758) and Pediculus humanus capitis (De Geer 1767). Laboratory-reared body lice, susceptible to insecticides, were used as reference in toxicological studies on head lice. In this work, we evaluated the survival of both subspecies at different temperatures and relative humidities and we propose the optimal conditions for comparative bioassays. Moreover, we used these conditions to test the activity of three monoterpenoids against both lice. The results showed differential response to changes in temperature and humidity between both organisms. The survival of body lice ranged between 83% and 100% and was not affected for the tested conditions. The survival of head lice depended on temperature, humidity, and exposure time. The optimal conditions for head lice were 18 masculineC and 97% relative humidity at 18 h of exposition. The insecticidal activity of three monoterpenoids (pulegone, linalool, and 1,8-cineole), evaluated according the selected conditions by topical application, showed no significant differences between males of body and head lice. To conclude, as head lice required more special laboratory conditions than body lice, the optimal head lice conditions should be used in both organisms in comparative bioassays. Body louse is an appropriate organism for testing products against of head louse.

Links

  • Publisher Full Text
  • Authors+Show Affiliations

    ,

    Centro de Investigaciones de Plagas e Insecticidas, Provincia de Buenos Aires, Argentina. agallardo@citefa.gov.ar

    ,

    Source

    Parasitology research 105:1 2009 Jul pg 163-7

    MeSH

    Animals
    Humidity
    Insecticides
    Monoterpenes
    Parasitic Sensitivity Tests
    Pediculus
    Survival Analysis
    Temperature

    Pub Type(s)

    Journal Article

    Language

    eng

    PubMed ID

    19242723

    Citation

    TY - JOUR T1 - Pediculus humanus capitis (head lice) and Pediculus humanus humanus (body lice): response to laboratory temperature and humidity and susceptibility to monoterpenoids. AU - Gallardo,A, AU - Mougabure Cueto,G, AU - Picollo,M I, Y1 - 2009/02/26/ PY - 2008/11/12/received PY - 2009/2/11/accepted PY - 2009/2/26/aheadofprint PY - 2009/2/27/entrez PY - 2009/2/27/pubmed PY - 2009/7/7/medline SP - 163 EP - 7 JF - Parasitology research JO - Parasitol. Res. VL - 105 IS - 1 N2 - Human pediculosis is produced by Pediculus humanus humanus (Linnaeus 1758) and Pediculus humanus capitis (De Geer 1767). Laboratory-reared body lice, susceptible to insecticides, were used as reference in toxicological studies on head lice. In this work, we evaluated the survival of both subspecies at different temperatures and relative humidities and we propose the optimal conditions for comparative bioassays. Moreover, we used these conditions to test the activity of three monoterpenoids against both lice. The results showed differential response to changes in temperature and humidity between both organisms. The survival of body lice ranged between 83% and 100% and was not affected for the tested conditions. The survival of head lice depended on temperature, humidity, and exposure time. The optimal conditions for head lice were 18 masculineC and 97% relative humidity at 18 h of exposition. The insecticidal activity of three monoterpenoids (pulegone, linalool, and 1,8-cineole), evaluated according the selected conditions by topical application, showed no significant differences between males of body and head lice. To conclude, as head lice required more special laboratory conditions than body lice, the optimal head lice conditions should be used in both organisms in comparative bioassays. Body louse is an appropriate organism for testing products against of head louse. SN - 1432-1955 UR - https://www.unboundmedicine.com/medline/citation/19242723/Pediculus_humanus_capitis__head_lice__and_Pediculus_humanus_humanus__body_lice_:_response_to_laboratory_temperature_and_humidity_and_susceptibility_to_monoterpenoids_ L2 - http://dx.doi.org/10.1007/s00436-009-1378-0 ER -