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  Landscape and oceanic barriers shape dispersal and population structure in the island nematode Pristionchus pacificus

Morgan, K., McGaughran, A., Ganeshan, S., Herrmann, M., & Sommer, R. (2014). Landscape and oceanic barriers shape dispersal and population structure in the island nematode Pristionchus pacificus. Biological Journal of the Linnean Society, 112(1), 1-15. doi:10.1111/bij.12255.

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アイテムのパーマリンク: https://hdl.handle.net/21.11116/0000-000A-8D15-0 版のパーマリンク: https://hdl.handle.net/21.11116/0000-000F-3EBB-A
資料種別: 学術論文

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 作成者:
Morgan, K1, 著者           
McGaughran, A1, 著者           
Ganeshan, S, 著者
Herrmann, M1, 2, 著者           
Sommer, RJ1, 著者           
所属:
1Department Integrative Evolutionary Biology, Max Planck Institute for Developmental Biology, Max Planck Society, ou_3375786              
2Entomo-Nematology Group, Department Integrative Evolutionary Biology, Max Planck Institute for Developmental Biology, Max Planck Society, ou_3507713              

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 要旨: Despite the biological importance and diversity of nematodes, little is known of the factors influencing their dispersal and shaping their evolutionary history. Populations of the cosmopolitan species Pristionchus pacificus are characterized by high genetic diversity and strong spatial structure, which contrasts with patterns detected in nematode species such as Caenorhabditis elegans. The environmentally heterogeneous volcanic Mascarene Islands provide an ideal setting for investigating fine-scale patterns of nematode migration and gene flow. Based on the analysis of data from 19 nuclear microsatellites and one mitochondrial marker, we infer support for the colonization of both La Réunion Island and Mauritius from similar multiple geographical sources. Although the long-term persistence of populations on both islands is well supported, the historical colonization of one island from the other cannot be discounted. In fact, periodic, bi-directional migration between the islands following their initial colonization is strongly supported in isolation with migration analyses, supporting the occurrence of rare trans-oceanic dispersal events in P. pacificus. Through a combination of population and landscape genetic analyses we also infer non-uniform dispersal across the landscape on the island of La Réunion, probably mediated by the movements of beetle hosts. Collectively, we show that gene flow in P. pacificus is limited by environmental and oceanic barriers, and shaped by the intricacies of the nematode–beetle host interaction.

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 日付: 2014-05
 出版の状態: 出版
 ページ: -
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 識別子(DOI, ISBNなど): DOI: 10.1111/bij.12255
 学位: -

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出版物名: Biological Journal of the Linnean Society
  省略形 : Biol. J. Linn. Soc. Lond.
種別: 学術雑誌
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出版社, 出版地: London : Wiley
ページ: - 巻号: 112 (1) 通巻号: - 開始・終了ページ: 1 - 15 識別子(ISBN, ISSN, DOIなど): ISSN: 0024-4066
CoNE: https://pure.mpg.de/cone/journals/resource/954922646052