Academic Journal
High levels of effective long-distance dispersal may blur ecotypic divergence in a rare terrestrial orchid
| العنوان: | High levels of effective long-distance dispersal may blur ecotypic divergence in a rare terrestrial orchid |
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| المؤلفون: | Vanden Broeck, A., Van Landuyt, W., Cox, K., De Bruyn, L., Gyselings, R., Oostermeijer, G., Valentin, B., Bozic, G., Dolinar, B., Illyés, Z., Mergeay, J. |
| المصدر: | Vanden Broeck , A , Van Landuyt , W , Cox , K , De Bruyn , L , Gyselings , R , Oostermeijer , G , Valentin , B , Bozic , G , Dolinar , B , Illyés , Z & Mergeay , J 2014 , ' High levels of effective long-distance dispersal may blur ecotypic divergence in a rare terrestrial orchid ' , BMC Ecology , vol. 14 , 20 . https://doi.org/10.1186/1472-6785-14-20 |
| سنة النشر: | 2014 |
| المجموعة: | Universiteit van Amsterdam: Digital Academic Repository (UvA DARE) |
| الوصف: | Background: Gene flow and adaptive divergence are key aspects of metapopulation dynamics and ecological speciation. Long-distance dispersal is hard to detect and few studies estimate dispersal in combination with adaptive divergence. The aim of this study was to investigate effective long-distance dispersal and adaptive divergence in the fen orchid ( Liparis loeselii (L.) Rich.). We used amplified fragment length polymorphism (AFLP)-based assignment tests to quantify effective long-distance dispersal at two different regions in Northwest Europe. In addition, genomic divergence between fen orchid populations occupying two distinguishable habitats, wet dune slacks and alkaline fens, was investigated by a genome scan approach at different spatial scales (continental, landscape and regional) and based on 451 AFLP loci. Results: We expected that different habitats would contribute to strong divergence and restricted gene flow resulting in isolation-by-adaptation. Instead, we found remarkably high levels of effective long-distance seed dispersal and low levels of adaptive divergence. At least 15% of the assigned individuals likely originated from among-population dispersal events with dispersal distances up to 220 km. Six (1.3%) ‘outlier’ loci, potentially reflecting local adaptation to habitat-type, were identified with high statistical support. Of these, only one (0.22%) was a replicated outlier in multiple independent dune-fen population comparisons and thus possibly reflecting truly parallel divergence. Signals of adaptation in response to habitat type were most evident at the scale of individual populations. Conclusions: The findings of this study suggest that the homogenizing effect of effective long-distance seed dispersal may overwhelm divergent selection associated to habitat type in fen orchids in Northwest Europe. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | https://dare.uva.nl/personal/pure/en/publications/high-levels-of-effective-longdistance-dispersal-may-blur-ecotypic-divergence-in-a-rare-terrestrial-orchid(84a4625d-34cb-4954-b2af-b1e78f1cf482).html |
| DOI: | 10.1186/1472-6785-14-20 |
| الاتاحة: | https://dare.uva.nl/personal/pure/en/publications/high-levels-of-effective-longdistance-dispersal-may-blur-ecotypic-divergence-in-a-rare-terrestrial-orchid(84a4625d-34cb-4954-b2af-b1e78f1cf482).html https://doi.org/10.1186/1472-6785-14-20 https://hdl.handle.net/11245.1/84a4625d-34cb-4954-b2af-b1e78f1cf482 https://pure.uva.nl/ws/files/29167150/1472_6785_14_20.pdf http://www.scopus.com/inward/record.url?scp=84903668784&partnerID=8YFLogxK |
| Rights: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.E9E23AD6 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1186/1472-6785-14-20 |
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