Cross-kingdom competitions among microbes, arthropods, and vertebrates for animal carcasses
| Project/Area Number |
18K06430
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 45040:Ecology and environment-related
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| Research Institution | Nihon University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
笠原 康裕 北海道大学, 低温科学研究所, 准教授 (20273849)
大舘 智志 北海道大学, 低温科学研究所, 助教 (60292041)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2018: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 動物死体 / 自動撮影カメラ / スカベンジング / 資源競争 / 生物間相互作用 / 分解 / 死肉性昆虫 / 食肉目 / 微生物 / 動物遺体 / 遷移 / ハエ / 種間相互作用 / 競争 / 昆虫 / 哺乳類 |
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| Outline of Final Research Achievements |
In this study, we studied how species interactions among distantly-related organisms affect the limited resources by using vertebrate carcasses as a model. Specifically, we observed the carcass fate of a raccoon in the summer 2018-2021 and quantified the effects of consumption by necrophagous insects and microbes on the time to detection and the consumption rate by vertebrate scavengers. The results showed that consumption by fly larvae (especially Chrysomya pinguis) and microbes greatly limited the carcasses available for consumption by mammalian carnivores (red fox and raccoon dog), while the activities of the fly larvae accelerated the detection of carcasses by the carnivores.
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| Academic Significance and Societal Importance of the Research Achievements |
資源競争は，これまで最も活発な研究がなされてきた生物間相互作用であり，生物群集を形作る重要な要素となりうることが分かっている．しかし，従来の研究は，近縁種間による競争に注目したものが多く，非近縁種間での生物間相互作用が資源の利用可能性にどのような影響をもたらすのかについては十分な研究がなされていない．本研究では，脊椎動物死体をモデルとして，非近縁な生物間においても，正負両面の効果を持つ複雑な相互作用が生じうることを示した．こうした知見は，生物多様性と生態系機能や生態系サービスの関係性を明らかにするうえでも欠かせないものである．
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Report
(4 results)
Research Products
(12 results)
