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| Content Provider | Springer Nature Link |
|---|---|
| Author | Watari, Yuya Nagata, Junco Funakoshi, Kimitake |
| Copyright Year | 2010 |
| Abstract | The small Indian mongoose Herpestes auropunctatus, which was recently determined to be a separate species from the Javan mongoose H. javanicus, is one of the most notorious invasive predators known. A population of Herpestes sp. was recently reported at Kagoshima prefecture on Kyushu Island, one of the main Japanese islands. Surprisingly, the trapping actions and information from residents after this report suggest that this Herpestes sp. population has been established in this area for at least 30 years. In this study, based on mitochondrial DNA sequences, we identified seven recently obtained Herpestes sp. individuals from this area as H. auropunctatus, confirming that an additional mongoose population has been established on Kyushu Island. Confirmation of the spatial distribution of the mongoose and surveillance systems in surrounding areas are urgently needed to prevent further expansion of this mongoose’s distribution. It also highlights the large gap between the accepted scientific knowledge relating to biosecurity against biological invasion and local knowledge on the ground, even when the introduced species is notorious and relatively conspicuous. Recent progressions of invasibility studies would greatly contribute to the prioritization of allocating adequate resources to areas with high invasion risks.フイリマングースHerpestes auropunctatusは、世界各地で甚大な影響をおよぼしてきた侵略的外来種のひとつとして知られている。なお、近年本種は、本種と同種として扱われてきたジャワマングースH. javanicusとは別種であることが確認されている。これにより、これまで日本の沖縄島や奄美大島をはじめ、世界各地でジャワマングースとされていた移入個体群は今後フイリマングースとして扱われることになる。近年、Herpestes属の一種が九州の鹿児島県において生息していることが確認された。さらに衝撃的なことに、その後の捕獲状況や住民の情報を総合すると、この個体群は少なくとも 30 年前からこの地域に定着していることが推測されたのである。本研究では、今回新たに発見された九州のマングース7 個体のサンプルを用いミトコンドリア DNA 配列による種の同定を行った。解析の結果、7 個体すべてがフイリマングースH. auropunctatusと同定され、日本においては、沖縄島、奄美大島のほかに九州にも本種が定着していることが確認された。本個体群に対して、まずは分布の拡大を防ぐことが最も優先されるべき取り組みである。そのためには、本個体群の分布域の正確な把握と、周辺地域の監視体制の設立が急務であろう。今回浮き彫りになった教訓としては、マングースような有名で比較的発見されやすい外来種のケースにおいてさえも、外来生物の移入や影響を防ぐ上で最も重要とされるバイオセキュリティーという取り組みが、実際にはほとんど機能していないという点が挙げられる。外来生物の監視をすべての地域で実施するのは困難であるため、優先順位に応じた対策努力の配分が重要となるであろう。近年の外来生物研究の進展による外来種の侵入リスク評価が、こうした戦略に大きく貢献するはずである。 |
| Starting Page | 269 |
| Ending Page | 276 |
| Page Count | 8 |
| File Format | |
| ISSN | 13873547 |
| Journal | Biological Invasions |
| Volume Number | 13 |
| Issue Number | 2 |
| e-ISSN | 15731464 |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2010-06-29 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Eradication Herpestes javanicus Invasive species Precautionary principle Predator Species introductions Developmental Biology Ecology Plant Sciences Freshwater & Marine Ecology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ecology Ecology, Evolution, Behavior and Systematics |
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