Embryonic development of human lice: rearing conditions and susceptibility to spinosad
The embryonic development of human lice was evaluated according to the changes in the morphology of the embryo observed through the transparent chorion. Based on ocular and appendage development, three stages of embryogenesis were established: early, medium, and late. Influence of temperature and re...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Fundação Oswaldo Cruz (FIOCRUZ)
2006-05-01
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| Series: | Memorias do Instituto Oswaldo Cruz |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762006000300005 |
| _version_ | 1797756552148418560 |
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| author | Gastón Mougabure Cueto Eduardo Zerba María Inés Picollo |
| author_facet | Gastón Mougabure Cueto Eduardo Zerba María Inés Picollo |
| author_sort | Gastón Mougabure Cueto |
| collection | DOAJ |
| description | The embryonic development of human lice was evaluated according to the changes in the morphology of the embryo observed through the transparent chorion. Based on ocular and appendage development, three stages of embryogenesis were established: early, medium, and late. Influence of temperature and relative humidity (RH) on the laboratory rearing of Pediculus humanus capitis eggs was assessed. The optimal ranges for temperature and RH were 27-31°C and 45-75%. The susceptibility of human louse eggs to insecticide spinosad (a macrocyclic lactone) was assessed by immersion method. The results showed similar susceptibility to spinosad in early, medium, and late stages of head lice eggs. In addition, this study showed similar susceptibility of head and body lice eggs to spinosad, an insecticide that has not been used as pediculicide in Argentina (lethal concentration 50: 0.01%). |
| first_indexed | 2024-03-12T18:02:06Z |
| format | Article |
| id | doaj.art-17067c4db2034d01ac468550ca9aaae2 |
| institution | Directory Open Access Journal |
| issn | 0074-0276 1678-8060 |
| language | English |
| last_indexed | 2024-03-12T18:02:06Z |
| publishDate | 2006-05-01 |
| publisher | Fundação Oswaldo Cruz (FIOCRUZ) |
| record_format | Article |
| series | Memorias do Instituto Oswaldo Cruz |
| spelling | doaj.art-17067c4db2034d01ac468550ca9aaae22023-08-02T09:32:33ZengFundação Oswaldo Cruz (FIOCRUZ)Memorias do Instituto Oswaldo Cruz0074-02761678-80602006-05-01101325726110.1590/S0074-02762006000300005Embryonic development of human lice: rearing conditions and susceptibility to spinosadGastón Mougabure CuetoEduardo ZerbaMaría Inés PicolloThe embryonic development of human lice was evaluated according to the changes in the morphology of the embryo observed through the transparent chorion. Based on ocular and appendage development, three stages of embryogenesis were established: early, medium, and late. Influence of temperature and relative humidity (RH) on the laboratory rearing of Pediculus humanus capitis eggs was assessed. The optimal ranges for temperature and RH were 27-31°C and 45-75%. The susceptibility of human louse eggs to insecticide spinosad (a macrocyclic lactone) was assessed by immersion method. The results showed similar susceptibility to spinosad in early, medium, and late stages of head lice eggs. In addition, this study showed similar susceptibility of head and body lice eggs to spinosad, an insecticide that has not been used as pediculicide in Argentina (lethal concentration 50: 0.01%).http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762006000300005human liceembryogenesisspinosad |
| spellingShingle | Gastón Mougabure Cueto Eduardo Zerba María Inés Picollo Embryonic development of human lice: rearing conditions and susceptibility to spinosad Memorias do Instituto Oswaldo Cruz human lice embryogenesis spinosad |
| title | Embryonic development of human lice: rearing conditions and susceptibility to spinosad |
| title_full | Embryonic development of human lice: rearing conditions and susceptibility to spinosad |
| title_fullStr | Embryonic development of human lice: rearing conditions and susceptibility to spinosad |
| title_full_unstemmed | Embryonic development of human lice: rearing conditions and susceptibility to spinosad |
| title_short | Embryonic development of human lice: rearing conditions and susceptibility to spinosad |
| title_sort | embryonic development of human lice rearing conditions and susceptibility to spinosad |
| topic | human lice embryogenesis spinosad |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762006000300005 |
| work_keys_str_mv | AT gastonmougaburecueto embryonicdevelopmentofhumanlicerearingconditionsandsusceptibilitytospinosad AT eduardozerba embryonicdevelopmentofhumanlicerearingconditionsandsusceptibilitytospinosad AT mariainespicollo embryonicdevelopmentofhumanlicerearingconditionsandsusceptibilitytospinosad |