Identification of Trombiculid Chigger Mites Collected on Rodents from Southern Vietnam and Molecular Detection of Rickettsiaceae Pathogen

Trombiculid "chigger" mites (Acari) are ectoparasites that feed blood on rodents and another animals. A crosssectional survey was conducted in 7 ecosystems of southern Vietnam from 2015 to 2016. Chigger mites were identified with morphological characteristics and assayed by polymerase chai...

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Published inKorean journal of parasitology Vol. 58; no. 4; pp. 445 - 450
Main Authors Binh, Minh Doan, Truong, Sinh Cao, Thanh, Dong Le, Ba, Loi Cao, Van, Nam Le, Nhu, Binh Do
Format Journal Article
LanguageKorean
Published 2020
Subjects
ectoparasite
Oriental tsutsugamushi
Rickettsia sp
chigger mite
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Summary:Trombiculid "chigger" mites (Acari) are ectoparasites that feed blood on rodents and another animals. A crosssectional survey was conducted in 7 ecosystems of southern Vietnam from 2015 to 2016. Chigger mites were identified with morphological characteristics and assayed by polymerase chain reaction for detection of rickettsiaceae. Overall chigger infestation among rodents was 23.38%. The chigger index among infested rodents was 19.37 and a mean abundance of 4.61. A total of 2,770 chigger mites were identified belonging to 6 species, 3 genera, and 1 family, and pooled into 141 pools (10-20 chiggers per pool). Two pools (1.4%) of the chiggers were positive for Orientia tsutsugamushi. Ricketsia spp. was not detected in any pools of chiggers. Further studies are needed including a larger number and diverse hosts, and environmental factors to assess scrub typhus.
Bibliography:KISTI1.1003/JNL.JAKO202030060641375
ISSN:0023-4001
1738-0006