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DOI | 10.1098/rspb.2019.0983 |
Long-distance dispersal, ice sheet dynamics and mountaintop isolation underlie the genetic structure of glacier ice worms | |
Hotaling, Scott1; Shain, Daniel H.2; Lang, Shirley A.3; Bagley, Robin K.4; Tronstad, Lusha M.5; Weisrock, David W.6; Kelley, Joanna L.1 | |
发表日期 | 2019 |
ISSN | 0962-8452 |
EISSN | 1471-2954 |
卷号 | 286期号:1905 |
英文摘要 | Disentangling the contemporary and historical factors underlying the spatial distributions of species is a central goal of biogeography. For species with broad distributions but little capacity to actively disperse, disconnected geographical distributions highlight the potential influence of passive, long-distance dispersal (LDD) on their evolutionary histories. However, dispersal alone cannot completely account for the biogeography of any species, and other factors-e.g. habitat suitability, life history-must also be considered. North American ice worms (Mesenchytraeus solifugus) are ice-obligate annelids that inhabit coastal glaciers from Oregon to Alaska. Previous studies identified a complex biogeographic history for ice worms, with evidence for genetic isolation, unexpectedly close relationships among geographically disjunct lineages, and contemporary migration across large (e.g. greater than 1500 km) areas of unsuitable habitat. In this study, we analysed genome-scale sequence data for individuals from most of the known ice worm range. We found clear support for divergence between populations along the Pacific Coast and the inland flanks of the Coast Mountains (mean F-ST = 0.60), likely precipitated by episodic ice sheet expansion and contraction during the Pleistocene. We also found support for LDD of ice worms from Alaska to Vancouver Island, perhaps mediated by migrating birds. Our results highlight the power of genomic data for disentangling complex biogeographic patterns, including the presence of LDD. |
WOS研究方向 | Life Sciences & Biomedicine - Other Topics ; Environmental Sciences & Ecology ; Evolutionary Biology |
来源期刊 | PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/99217 |
作者单位 | 1.Washington State Univ, Sch Biol Sci, Pullman, WA 99164 USA; 2.Rutgers State Univ, Dept Biol, Camden, NJ USA; 3.Rowan Univ, Grad Sch Biomed Sci, Stratford, NJ USA; 4.Univ Iowa, Dept Biol, Iowa City, IA 52242 USA; 5.Univ Wyoming, Wyoming Nat Divers Database, Laramie, WY 82071 USA; 6.Univ Kentucky, Dept Biol, Lexington, KY USA |
推荐引用方式 GB/T 7714 | Hotaling, Scott,Shain, Daniel H.,Lang, Shirley A.,et al. Long-distance dispersal, ice sheet dynamics and mountaintop isolation underlie the genetic structure of glacier ice worms[J],2019,286(1905). |
APA | Hotaling, Scott.,Shain, Daniel H..,Lang, Shirley A..,Bagley, Robin K..,Tronstad, Lusha M..,...&Kelley, Joanna L..(2019).Long-distance dispersal, ice sheet dynamics and mountaintop isolation underlie the genetic structure of glacier ice worms.PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES,286(1905). |
MLA | Hotaling, Scott,et al."Long-distance dispersal, ice sheet dynamics and mountaintop isolation underlie the genetic structure of glacier ice worms".PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES 286.1905(2019). |
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