globalchange  > 气候变化与战略
DOI: 10.1073/pnas.2001283117
论文题名:
Two centuries of monarch butterfly collections reveal contrasting effects of range expansion and migration loss on wing traits
作者: Freedman M.G.; Dingle H.; Strauss S.Y.; Ramírez S.R.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期:46
起始页码: 28887
结束页码: 28893
语种: 英语
英文关键词: Relaxed selection | migration | monarch butterfly | morphology | range expansion
Scopus关键词: article ; butterfly ; human tissue ; information center ; nonhuman ; wing
英文摘要: Migratory animals exhibit traits that allow them to exploit seasonally variable habitats. In environments where migration is no longer beneficial, such as oceanic islands, migration-association traits may be selected against or be under relaxed selection. Monarch butterflies are best known for their continent-scale migration in North America but have repeatedly become established as nonmigrants in the tropical Americas and on Atlantic and Pacific Islands. These replicated nonmigratory populations provide natural laboratories for understanding the rate of evolution of migration-associated traits. We measured >6,000 museum specimens of monarch butterflies collected from 1856 to the present as well as contemporary wild-caught monarchs from around the world. We determined 1) how wing morphology varies across the monarch’s global range, 2) whether initial long-distance founders were particularly suited for migration, and 3) whether recently established nonmigrants show evidence for contemporary phenotypic evolution. We further reared >1,000 monarchs from six populations around the world under controlled conditions and measured migration-associated traits. Historical specimens show that 1) initial founders are well suited for long-distance movement and 2) loss of seasonal migration is associated with reductions in forewing size and elongation. Monarch butterflies raised in a common garden from four derived nonmigratory populations exhibit genetically based reductions in forewing size, consistent with a previous study. Our findings provide a compelling example of how migration-associated traits may be favored during the early stages of range expansion, and also the rate of reductions in those same traits upon loss of migration. © 2020 National Academy of Sciences. All rights reserved.
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被引频次[WOS]:22   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163946
Appears in Collections:气候变化与战略

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作者单位: Freedman, M.G., Center for Population Biology, University of California, Davis, CA 95616, United States, Department of Evolution and Ecology, University of California, Davis, CA 95616, United States; Dingle, H., Department of Entomology and Nematology, University of California, Davis, CA 95616, United States; Strauss, S.Y., Center for Population Biology, University of California, Davis, CA 95616, United States, Department of Evolution and Ecology, University of California, Davis, CA 95616, United States; Ramírez, S.R., Center for Population Biology, University of California, Davis, CA 95616, United States, Department of Evolution and Ecology, University of California, Davis, CA 95616, United States

Recommended Citation:
Freedman M.G.,Dingle H.,Strauss S.Y.,et al. Two centuries of monarch butterfly collections reveal contrasting effects of range expansion and migration loss on wing traits[J]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(46)
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