Journal
VETERINARY PARASITOLOGY
Volume 233, Issue -, Pages 39-42Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.vetpar.2016.11.020
Keywords
Babesia ovata; Midgut stage; Midgut contents; Artificial induction
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Funding
- Japan Society for the Promotion of Science (JSPS) KAKENHI Grant [14J05872, 26850190, 25252050, 06660253, 25292173, 26660229, 15H05264, 16H05028]
- Grants-in-Aid for Scientific Research [16J08221, 26660229, 14J05872, 25252050, 06660253, 16K18794, 26850190] Funding Source: KAKEN
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The initial development of Babesia ovata in the midgut of the vector tick Haemaphysalis longicornis has been demonstrated through in vitro and in vivo studies. Although the research on the partial developmental cycles of B. ovata in the tick midgut was performed in our previous study by using ticks fed on experimentally B. ovata-infected cattle, detailed information on the developmental stages of B. ovata in H. longicornis was limited. This report describes the sequential development of stages of B. ovata in an in vitro study using B. ovata-infected erythrocytes and tick midgut contents. The in vivo study also confirmed the developmental stages in the midgut contents of artificially B. ovata-infected ticks. In this observation, we have recognized the distinct forms of B. ovata developmental stages in the tick midgut; the aggregation forms and ray bodies with shorter spikes and light-stained cytoplasm were shown by Giemsa staining. The similarities and differences of the stages as compared to previous reports have been discussed. (C) 2016 Elsevier B.V. All rights reserved.
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