Publication: Transstadial and transovarial transmission of orientia tsutsugamushi in leptotrombidium imphalum and leptotrombidium chiangraiensis (acari: Trombiculidae)
Issued Date
2009-11-01
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ISSN
00222585
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2-s2.0-75549090559
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Mahidol University
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SCOPUS
Bibliographic Citation
Journal of Medical Entomology. Vol.46, No.6 (2009), 1442-1445
Suggested Citation
Siriporn Phasomkusolsil, Panita Tanskul, Supaporn Ratanatham, Pochaman Watcharapichat, Duangporn Phulsuksombati, Stephen P. Frances, Kriangkrai Lerdthusnee, Kenneth J. Linthicum Transstadial and transovarial transmission of orientia tsutsugamushi in leptotrombidium imphalum and leptotrombidium chiangraiensis (acari: Trombiculidae). Journal of Medical Entomology. Vol.46, No.6 (2009), 1442-1445. doi:10.1603/033.046.0628 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/26967
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Title
Transstadial and transovarial transmission of orientia tsutsugamushi in leptotrombidium imphalum and leptotrombidium chiangraiensis (acari: Trombiculidae)
Abstract
Transovarial transmission of Orientia tsutsugamushi (Hayashi) in laboratory colonies of Leptotrombidium chiangraiensis Tanskul & Linthicum and Leptotrombidium imphalum (Vercammen-Grandjean & Langston) (Acari: Trombiculidae) was studied for two generations. In L. chiangraiensis, the transovarial and filial infection rate was 100% in each generation. Only infected females were produced. In L. imphalum, the transovarial infection rate of the parental generation was 100% but declined to 93.3% in the F 1 generation. The overall filial infection rate was 100% in the F1 but was only 62.3% in the F 2 generation. In infected lines, only infected females were produced in the F 1 generation, but 1.5% of the F 2 progeny were infected males. Lower rates of transovarial transmission in L. imphalum may be the cause of the lower natural infection rates found in nature.