A U.S. Isolate of Theileria orientalis Ikeda Is Not Transstadially Transmitted to Cattle by Rhipicephalus microplus
Ikeda has caused an epidemic of bovine anemia and abortion across several U.S. states. This apicomplexan hemoparasite is transmitted by ticks; however, it is unknown if other North American ticks are competent vectors. Since the disease movement is largely determined by the host tick range(s), the p...
Saved in:
Published in | Pathogens (Basel) Vol. 12; no. 4; p. 559 |
---|---|
Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Switzerland
MDPI AG
05.04.2023
MDPI |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Ikeda has caused an epidemic of bovine anemia and abortion across several U.S. states. This apicomplexan hemoparasite is transmitted by
ticks; however, it is unknown if other North American ticks are competent vectors. Since the disease movement is largely determined by the host tick range(s), the prediction of the
spread among U.S. cattle populations requires determination of additional competent tick vectors. Although
has mostly been eradicated from the U.S., outbreaks in populations occur frequently, and the U.S. remains at risk for reintroduction. Since
is a vector of
and
DNA has been detected in
, the goal of this study was to determine whether
is a competent vector of
. Larval
were applied to a splenectomized,
Ikeda-infected calf for parasite acquisition, removed as molted adults, and applied to two
naïve, splenectomized calves for transmission. After 60 days, the naïve calves remained negative for
by PCR and cytology. Additionally,
was not detected in the salivary glands or larval progeny of acquisition-fed adults. These data suggest that
is not a competent vector of the U.S.
Ikeda isolate. |
---|---|
Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 2076-0817 2076-0817 |
DOI: | 10.3390/pathogens12040559 |