globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.13681
论文题名:
Legacy introductions and climatic variation explain spatiotemporal patterns of invasive hybridization in a native trout
作者: Muhlfeld C.C.; Kovach R.P.; Al-Chokhachy R.; Amish S.J.; Kershner J.L.; Leary R.F.; Lowe W.H.; Luikart G.; Matson P.; Schmetterling D.A.; Shepard B.B.; Westley P.A.H.; Whited D.; Whiteley A.; Allendorf F.W.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2017
语种: 英语
英文关键词: Biodiversity ; Climate change ; Cutthroat trout ; Hybridization ; Introgression ; Invasion ; Propagule pressure ; Translocation
英文摘要: Hybridization between invasive and native species, a significant threat to worldwide biodiversity, is predicted to increase due to climate-induced expansions of invasive species. Long-term research and monitoring are crucial for understanding the ecological and evolutionary processes that modulate the effects of invasive species. Using a large, multidecade genetics dataset (N = 582 sites, 12,878 individuals) with high-resolution climate predictions and extensive stocking records, we evaluate the spatiotemporal dynamics of hybridization between native cutthroat trout and invasive rainbow trout, the world's most widely introduced invasive fish, across the Northern Rocky Mountains of the United States. Historical effects of stocking and contemporary patterns of climatic variation were strongly related to the spread of hybridization across space and time. The probability of occurrence, extent of, and temporal changes in hybridization increased at sites in close proximity to historical stocking locations with greater rainbow trout propagule pressure, warmer water temperatures, and lower spring precipitation. Although locations with warmer water temperatures were more prone to hybridization, cold sites were not protected from invasion; 58% of hybridized sites had cold mean summer water temperatures (<11°C). Despite cessation of stocking over 40 years ago, hybridization increased over time at half (50%) of the locations with long-term data, the vast majority of which (74%) were initially nonhybridized, emphasizing the chronic, negative impacts of human-mediated hybridization. These results show that effects of climate change on biodiversity must be analyzed in the context of historical human impacts that set ecological and evolutionary trajectories. © 2017 John Wiley & Sons Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61127
Appears in Collections:影响、适应和脆弱性

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作者单位: Northern Rocky Mountain Science Center U.S. Geological Survey West Glacier, MT USA; Flathead Lake Biological Station Division of Biological Sciences University of Montana Polson, MT USA; Northern Rocky Mountain Science Center U.S. Geological Survey Bozeman, MT USA; Montana Fish, Wildlife and Parks Missoula, MT USA; Division of Biological Sciences University of Montana Missoula, MT USA; B.B. Shepard and Associates Livingston, MT USA; School of Fisheries and Ocean Sciences University of Alaska Fairbanks, AK USA; Wildlife Biology Program Department of Ecosystem and Conservation Sciences College of Forestry and Conservation University of Montana Missoula, MT USA

Recommended Citation:
Muhlfeld C.C.,Kovach R.P.,Al-Chokhachy R.,et al. Legacy introductions and climatic variation explain spatiotemporal patterns of invasive hybridization in a native trout[J]. Global Change Biology,2017-01-01
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