Dynamics of Theileria orientalis genotype population in cattle in a year-round grazing system

被引：6

作者：

Masatani, Tatsunori ^{[1
]}

Yoshihara, Shunpei ^{[2
]}

Matsubara, Atsuko ^{[3
]}

Gotoh, Takafumi ^{[3
]}

Takahashi, Hideyuki ^{[3
]}

Tanaka, Tetsuya ^{[4
]}

Andoh, Masako ^{[5
]}

Endo, Yasuyuki ^{[6
]}

Matsuo, Tomohide ^{[2
]}

机构：

[1] Kagoshima Univ, Joint Fac Vet Med, Transboundary Anim Dis Res Ctr, Kagoshima 8900065, Japan

[2] Kagoshima Univ, Joint Fac Vet Med, Parasitol Lab, Kagoshima 8900065, Japan

[3] Kyushu Univ, Grad Sch Agr, Kuju Agr Res Ctr, Oita 8780201, Japan

[4] Kagoshima Univ, Joint Fac Vet Med, Infect Dis Lab, Kagoshima 8900065, Japan

[5] Kagoshima Univ, Joint Fac Vet Med, Lab Vet Publ Hlth, Kagoshima 8900065, Japan

[6] Kagoshima Univ, Joint Fac Vet Med, Lab Small Anim Internal Med, Kagoshima 8900065, Japan

来源：

ACTA PARASITOLOGICA | 2016年 / 61卷 / 02期

关键词：

Cattle; MPSP; PCR; Theileria orientalis; Tick; POLYMERASE-CHAIN-REACTION; PIROPLASM SURFACE-PROTEINS; HAEMAPHYSALIS-LONGICORNIS TICKS; SERGENTI INFECTION; GENETIC DIVERSITY; EPIDEMIOLOGIC SURVEY; NEW-CALEDONIA; JAPAN; OKINAWA; HERDS;

D O I：

10.1515/ap-2016-0056

中图分类号：

R38 [医学寄生虫学]; Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ; 100103 ;

摘要：

Theirelia orientalis is a tick-borne haemoprotozoan parasite, and infection with this parasite is one of the most important diseases for grazing cattle. Co-infection of cattle with different genotypes of T. orientalis often occurs. In this study, we investigated the temporal dynamics of genotypes in cattle in a year-round grazing system in Japan. Genotype-specific PCR assays to determine major piroplasm surface protein (MPSP) genotypes (types 1 to 5) of T. orientalis were performed by using time-course blood samples collected from grazing cattle and ticks in a pasture. All 20 cattle investigated in this study were infected with T. orientalis. By using genotype-specific PCR, we detected the combination of genotypes of T. orientalis (types 1 to 5) from each cattle. These multiple genotypes of T. orientalis were also confirmed in ticks. Notably, each genotype of T. orientalis in cattle was temporally detected from cattle and more variable genotypes were found in summer. The observed temporal dynamics of the MPSP genotypes of T. orientalis in cattle could be explained by host immunity against the parasites or genetic recombination of parasite in ticks.

引用

页码：419 / 424

页数：6

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