Reconstructing geographical parthenogenesis

Autor(en)
Bernhard Kirchheimer, Johannes Wessely, Andreas Gattringer, Karl Hülber, Dietmar Moser, Christoph C.F. Schinkel, Marc Appelhans, Simone Klatt, Marco Caccianiga, Agnes Dellinger, Antoine Guisan, Michael Kuttner, Jonathan Lenoir, Luigi Maiorano, Diego Nieto-Lugilde, Christoph Plutzar, Jens Christian Svenning, Wolfgang Willner, Elvira Hörandl, Stefan Dullinger
Abstrakt

Asexual taxa often have larger ranges than their sexual progenitors, particularly in areas affected by Pleistocene glaciations. The reasons given for this 'geographical parthenogenesis' are contentious, with expansion of the ecological niche or colonisation advantages of uniparental reproduction assumed most important in case of plants. Here, we parameterized a spread model for the alpine buttercup Ranunculus kuepferi and reconstructed the joint Holocene range expansion of its sexual and apomictic cytotype across the European Alps under different simulation settings. We found that, rather than niche broadening or a higher migration rate, a shift of the apomict's niche towards colder conditions per se was crucial as it facilitated overcoming of topographical barriers, a factor likely relevant for many alpine apomicts. More generally, our simulations suggest potentially strong interacting effects of niche differentiation and reproductive modes on range formation of related sexual and asexual taxa arising from their differential sensitivity to minority cytotype disadvantage.

Organisation(en)
Department für Botanik und Biodiversitätsforschung
Externe Organisation(en)
Georg-August-Universität Göttingen, Universitá degli Studi di Milano, Université de Lausanne, Università degli Studi di Roma La Sapienza, Universidad de Córdoba, Aarhus University, Vienna Institute for Nature Conservation and Analyis (VINCA), Université de Picardie Jules Verne
Journal
Ecology Letters
Band
21
Seiten
392-401
ISSN
1461-023X
DOI
https://doi.org/10.1111/ele.12908
Publikationsdatum
01-2018
Peer-reviewed
Ja
ÖFOS 2012
106003 Biodiversitätsforschung, 106008 Botanik
Schlagwörter
ASJC Scopus Sachgebiete
Ecology, Evolution, Behavior and Systematics
Link zum Portal
https://ucris.univie.ac.at/portal/de/publications/reconstructing-geographical-parthenogenesis(92cc0777-876e-4497-b3e6-884e2080f5b4).html