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Title: Transstadial and transovarial transmission of orientia tsutsugamushi in leptotrombidium imphalum and leptotrombidium chiangraiensis (acari: Trombiculidae)
Authors: Siriporn Phasomkusolsil
Panita Tanskul
Supaporn Ratanatham
Pochaman Watcharapichat
Duangporn Phulsuksombati
Stephen P. Frances
Kriangkrai Lerdthusnee
Kenneth J. Linthicum
Armed Forces Research Institute of Medical Sciences, Thailand
Mahidol University
Australian Army Malaria Institute
USDA Agricultural Research Service, Gainesville
Keywords: Agricultural and Biological Sciences;Immunology and Microbiology;Medicine;Veterinary
Issue Date: 1-Nov-2009
Citation: Journal of Medical Entomology. Vol.46, No.6 (2009), 1442-1445
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.
ISSN: 00222585
Appears in Collections:Scopus 2006-2010

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