CHANGES IN THE LEVELS OF THEILERIA ORIENTALIS IKEDA TYPE INFECTION IN HAEMAPHYSALIS LONGICORNIS NYMPHS OVER A SIX-MONTH PERIOD.

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dc.citation.issue5
dc.citation.volume107
dc.contributor.authorZhao Y
dc.contributor.authorLawrence KE
dc.contributor.authorMinor M
dc.contributor.authorGedye K
dc.contributor.authorWang B
dc.contributor.authorPomroy W
dc.contributor.authorPotter M
dc.date.accessioned2023-03-02T02:22:08Z
dc.date.available2021
dc.date.available2023-03-02T02:22:08Z
dc.date.issued2021-09-01
dc.description.abstractThis study aimed to investigate whether the infection intensity of Theileria orientalis Ikeda type organisms within Haemaphysalis longicornis larvae and nymph stages fluctuated over 6 mo after feeding as larvae on infected calves in the field. Naïve larvae, hatched from eggs, were fed on infected calves for 5 days while contained within cotton socks glued over the calves' ears. Larvae were first sampled immediately post-feeding and then sampled every 3 wk for 23 wk in total, after molting to nymphs. All larvae and nymphs were tested for T. orientalis Ikeda organisms using quantitative PCR. The qPCR results showed that the infection intensity of Haemaphysalis longicornis larvae and nymphs was not constant over the sampling period, and after initially dropping after molting to nymphs, it then rose with fasting to a maximum at 17 and 23 wk post-feeding. The significant rise in T. orientalis Ikeda organisms observed at 23 wk postfeeding may explain why more severe clinical cases of bovine theileriosis in New Zealand are seen in the spring when nymphs are the predominant instar questing.
dc.description.publication-statusPublished
dc.format.extent710 - 716
dc.identifierhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000696462900001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=c5bb3b2499afac691c2e3c1a83ef6fef
dc.identifier.citationJOURNAL OF PARASITOLOGY, 2021, 107 (5), pp. 710 - 716
dc.identifier.doi10.1645/20-177
dc.identifier.eissn1937-2345
dc.identifier.elements-id448563
dc.identifier.harvestedMassey_Dark
dc.identifier.issn0022-3395
dc.relation.isPartOfJOURNAL OF PARASITOLOGY
dc.rightsCC BY-NC-ND 4.0
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectTheileriosis
dc.subjectCattle
dc.subjectEar bags
dc.subjectBovine
dc.subjectTheileria orientally
dc.subjectIkeda
dc.subjectNew Zealand
dc.subject.anzsrc06 Biological Sciences
dc.subject.anzsrc07 Agricultural and Veterinary Sciences
dc.titleCHANGES IN THE LEVELS OF THEILERIA ORIENTALIS IKEDA TYPE INFECTION IN HAEMAPHYSALIS LONGICORNIS NYMPHS OVER A SIX-MONTH PERIOD.
dc.typeJournal article
pubs.notesNot known
pubs.organisational-group/Massey University
pubs.organisational-group/Massey University/College of Sciences
pubs.organisational-group/Massey University/College of Sciences/School of Natural Sciences
pubs.organisational-group/Massey University/College of Sciences/School of Veterinary Science
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