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| Content Provider | Springer Nature Link |
|---|---|
| Author | Yara, Kaori Matsuo, Kazunori Sasawaki, Terunori Shimoda, Takeshi Moriya, Seiichi |
| Copyright Year | 2012 |
| Abstract | We describe here the parasitoid wasps Torymus sinensis Kamijo and T. beneficus Yasumatsu & Kamijo (early-spring and late-spring strains), which are introduced and indigenous natural enemies of the chestnut gall wasp Dryocosmus kuriphilus Yasumatsu, an invasive chestnut pest in Japan. We recently discovered specimens of T. koreanus Kamijo, endemic in Korea, among Torymus parasitoids collected from D. kuriphilus galls in a Japanese chestnut orchard. In this study we compare the composition of Torymus parasitoids emerging from D. kuriphilus galls before and after the release of T. sinensis. Before the release of T. sinensis, early-spring and late-spring strains of T. beneficus predominated (58.3 and 20.8% of specimens collected). However, a few years after the release, both T. beneficus strains had been almost completely displaced by T. sinensis. In contrast to the rapid decrease in T. beneficus, T. koreanus did not decrease drastically before and even after the release of T. sinensis (approximately 10–20% of specimens collected). These results suggest that not a few T. koreanus were present in the Japanese chestnut orchard investigated at least several years after the release of T. sinensis, although both the T. beneficus strains were rapidly displaced by T. sinensis during this period. |
| Starting Page | 55 |
| Ending Page | 60 |
| Page Count | 6 |
| File Format | |
| ISSN | 00036862 |
| Journal | Applied Entomology and Zoology |
| Volume Number | 47 |
| Issue Number | 1 |
| e-ISSN | 1347605X |
| Language | English |
| Publisher | Springer Japan |
| Publisher Date | 2012-01-10 |
| Publisher Place | Japan |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Torymus koreanus Torymus sinensis Torymus beneficus Natural enemy Dryocosmus kuriphilus Applied Ecology Agriculture Entomology Environmental Management Plant Pathology Zoology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Insect Science |
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