期刊
SCIENCE
卷 361, 期 6406, 页码 1023-1025出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aat0985
关键词
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资金
- Wyoming Governor's Big Game License Coalition
- Wyoming Game and Fish Department
- Idaho Department of Fish and Game
- Wyoming NASA Space Grant Consortium
- American Society of Mammalogists
- Safari Club International Foundation
- Idaho Safari Club
- Idaho Transportation Department
- Bureau of Land Management
- U.S. Forest Service
- Pittman-Robertson Wildlife Restoration funds
- Wild Sheep Foundation
- Wyoming Wild Sheep Foundation
- Teton Conservation District
- Grand Teton National Park Foundation
- Wyoming Wildlife-Livestock Disease Research Partnership
- Alces Society
Ungulate migrations are assumed to stem from learning and cultural transmission of information regarding seasonal distribution of forage, but this hypothesis has not been tested empirically. We compared the migratory propensities of bighorn sheep and moose translocated into novel habitats with those of historical populations that had persisted for hundreds of years. Whereas individuals from historical populations were largely migratory, translocated individuals initially were not. After multiple decades, however, translocated populations gained knowledge about surfing green waves of forage (tracking plant phenology) and increased their propensity to migrate. Our findings indicate that learning and cultural transmission are the primary mechanisms by which ungulate migrations evolve. Loss of migration will therefore expunge generations of knowledge about the locations of high-quality forage and likely suppress population abundance.
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