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|Title:||Transstadial and transovarial transmission of orientia tsutsugamushi in leptotrombidium imphalum and leptotrombidium chiangraiensis (acari: Trombiculidae)|
Stephen P. Frances
Kenneth J. Linthicum
Armed Forces Research Institute of Medical Sciences, Thailand
Australian Army Malaria Institute
USDA Agricultural Research Service, Gainesville
|Keywords:||Agricultural and Biological Sciences;Immunology and Microbiology;Medicine;Veterinary|
|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.|
|Appears in Collections:||Scopus 2006-2010|
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