2022 Fiscal Year Final Research Report
Reexamination of the boundary between the Palaearctic and Oriental regions in regional zoogeographybased on the concept of connectivity
| Project/Area Number |
18H03602
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Medium-sized Section 4:Geography, cultural anthropology, folklore, and related fields
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
西川 完途 京都大学, 地球環境学堂, 准教授 (10335292)
遠藤 秀紀 東京大学, 総合研究博物館, 教授 (30249908)
押田 龍夫 帯広畜産大学, 畜産学部, 教授 (50374765)
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| Project Period (FY) |
2018-04-01 – 2022-03-31
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| Keywords | 動物地理 / 地理的変異 / 適応進化 / 生殖隔離 / 標高分布 / 島嶼 / コネクティビティ / 種多様性 |
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| Outline of Final Research Achievements |
In this study, fieldwork and specimen and material analysis were conducted based on distribution connectivity, to delineate the boundary between the Palearctic and Oriental regions of regional zoogeography in Asia, and geological analyses as well as morphological and genetic analyses of geographic differentiation and its factors were conducted. In the continental area, the Paleoarctic element was newly identified at the high elevation of Indochina. It was suggested that changes in horizontal and elevational distributions associated with past climatic changes have formed the present mosaic-like boundaries. Some of the populations distributed at low elevations and on islands may have been affected by anthropogenic influences, leading to confusion in understanding the zoogeographic elements. Overlaying the results of diverse taxa with different living habitats and migratory dispersal abilities provided an integrated understanding of the two geographic regions.
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| Free Research Field |
アジアにおける陸上動物の動物地理学
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| Academic Significance and Societal Importance of the Research Achievements |
本研究はアジアにおける旧北区と東洋区の境界を再検討したものである．これらの地域には山間部や島嶼が含まれ，アクセスが困難な地域が多いことから，これまでに不十分だった生物多様性の知見を増大させ，動物区系地理学と関連させて，地理的要素と地域性に着目しながら，動物の移動分散や進化の歴史を明らかにすることができた．このことは学術的意義が大きく，また生物多様性ホットスポットにおける動物種の保全や生息地管理を実施していくための基礎となる知見を提供した点で社会的意義があるといえる．
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