Academic Journal
Ancient and modern colonization of North America by hemlock woolly adelgid, Adelges tsugae (Hemiptera: Adelgidae), an invasive insect from East Asia ; Molecular Ecology
| العنوان: | Ancient and modern colonization of North America by hemlock woolly adelgid, Adelges tsugae (Hemiptera: Adelgidae), an invasive insect from East Asia ; Molecular Ecology |
|---|---|
| المؤلفون: | Havill, Nathan P., Shiyake, Shigehiko, Galloway, Ashley Lamb, Foottit, Robert G., Yu, Guoyue, Paradis, Annie, Elkinton, Joseph S., Montgomery, Michael E., Sano, Masakazu, Caccone, Adalgisa |
| المساهمون: | Entomology |
| سنة النشر: | 2016 |
| المجموعة: | VTechWorks (VirginiaTech) |
| مصطلحات موضوعية: | complex life cycle, cyclical parthenogenesis, host range, invasive species |
| الوصف: | Hemlock woolly adelgid, Adelges tsugae, is an invasive pest of hemlock trees (Tsuga) in eastern North America. We used 14 microsatellites and mitochondrial COI sequences to assess its worldwide genetic structure and reconstruct its colonization history. The resulting information about its life cycle, biogeography and host specialization could help predict invasion by insect herbivores. We identified eight endemic lineages of hemlock adelgids in central China, western China, Ulleung Island (South Korea), western North America, and two each in Taiwan and Japan, with the Japanese lineages specializing on different Tsuga species. Adelgid life cycles varied at local and continental scales with different sexual, obligately asexual and facultatively asexual lineages. Adelgids in western North America exhibited very high microsatellite heterozygosity, which suggests ancient asexuality. The earliest lineages diverged in Asia during Pleistocene glacial periods, as estimated using approximate Bayesian computation. Colonization of western North America was estimated to have occurred prior to the last glacial period by adelgids directly ancestral to those in southern Japan, perhaps carried by birds. The modern invasion from southern Japan to eastern North America caused an extreme genetic bottleneck with just two closely related clones detected throughout the introduced range. Both colonization events to North America involved host shifts to unrelated hemlock species. These results suggest that genetic diversity, host specialization and host phylogeny are not predictive of adelgid invasion. Monitoring non-native sentinel host trees and focusing on invasion pathways might be more effective methods of preventing invasion than making predictions using species traits or evolutionary history. ; USDA NIFA Award [2007-35302-18097]; US Forest Service Northern and Southern Research Stations; Yale Institute for Biospheric Studies ; This project was supported by USDA NIFA Award 2007-35302-18097, the US Forest Service Northern and ... |
| نوع الوثيقة: | article in journal/newspaper still image |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 0962-1083 1365-294X |
| Relation: | http://hdl.handle.net/10919/97881; https://doi.org/10.1111/mec.13589; 25 |
| DOI: | 10.1111/mec.13589 |
| الاتاحة: | http://hdl.handle.net/10919/97881 https://doi.org/10.1111/mec.13589 |
| Rights: | CC0 1.0 Universal ; http://creativecommons.org/publicdomain/zero/1.0/ |
| رقم الانضمام: | edsbas.B088489A |
| قاعدة البيانات: | BASE |
| تدمد: | 09621083 1365294X |
|---|---|
| DOI: | 10.1111/mec.13589 |