| Project/Area Number |
18H02216
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 39050:Insect science-related
|
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| Research Institution | Okinawa Institute of Science and Technology Graduate University |
|---|
Principal Investigator |
Mikheyev Alexander 沖縄科学技術大学院大学, 生態・進化学ユニット, 准教授 (90601162)
|
|---|
| Project Period (FY) |
2018-04-01 – 2021-03-31
|
| Project Status |
Completed (Fiscal Year 2020)
|
| Budget Amount *help |
¥16,900,000 (Direct Cost: ¥13,000,000、Indirect Cost: ¥3,900,000)
Fiscal Year 2020: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2019: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Fiscal Year 2018: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
|
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| Keywords | evolution / parasites / honey bees / Proteomics / Honey bees / Varroa / Transcriptomics / mites / viruses / coevolution |
|---|
| Outline of Final Research Achievements |
Successful host switches by parasites are evolutionary events that enable them to access new resources, and can lead to eventual speciation. Host switch events can be difficult to observe, yet they can lead to worldwide pandemics. We reconstructed the demographic history of host switches by two species of ectoparasites, Varroa mites, which are the principal drivers of worldwide honey bee declines. Varroa mites are believed to be “quasi-clonal”, making their worldwide success a genetic paradox. However, we found that the host switch involved the genetic equivalent of hundreds of individuals, explaining the remarkable adaptation of the parasites to both diverse bee populations and pesticides. These results highlight the importance of demographic parameters, particularly genetic diversity, for parasitic host switches.
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| Academic Significance and Societal Importance of the Research Achievements |
Our results highlight the importance of demographic parameters, particularly genetic diversity, for parasitic host switches
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