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Using neutral cline decay to estimate contemporary dispersal: a generic tool and its application to a major crop pathogen

Rieux, A; Lenormand, T; Carlier, J; de Lapeyre de Bellaire, L; Ravigné, V; (2013) Using neutral cline decay to estimate contemporary dispersal: a generic tool and its application to a major crop pathogen. Ecology Letters , 16 (6) 721 - 730. 10.1111/ele.12090. Green open access

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Abstract

Dispersal is a key parameter of adaptation, invasion and persistence. Yet standard population genetics inference methods hardly distinguish it from drift and many species cannot be studied by direct mark-recapture methods. Here, we introduce a method using rates of change in cline shapes for neutral markers to estimate contemporary dispersal. We apply it to the devastating banana pest Mycosphaerella fijiensis, a wind-dispersed fungus for which a secondary contact zone had previously been detected using landscape genetics tools. By tracking the spatio-temporal frequency change of 15 microsatellite markers, we find that σ, the standard deviation of parent–offspring dispersal distances, is 1.2 km/generation1/2. The analysis is further shown robust to a large range of dispersal kernels. We conclude that combining landscape genetics approaches to detect breaks in allelic frequencies with analyses of changes in neutral genetic clines offers a powerful way to obtain ecologically relevant estimates of dispersal in many species.

Type: Article
Title: Using neutral cline decay to estimate contemporary dispersal: a generic tool and its application to a major crop pathogen
Open access status: An open access version is available from UCL Discovery
DOI: 10.1111/ele.12090
Publisher version: http://dx.doi.org/10.1111/ele.12090
Language: English
Additional information: © 2013 The Authors. Ecology Letters published by John Wiley & Sons Ltd and CNRS. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. http://creativecommons.org/licenses/by/3.0/
Keywords: Dispersal ecology, emergent disease, gene flow estimation, genetic clines, landscape genetics, Mycosphaerella fijiensis ;neutral markers, non-equilibrium populations, secondary contact
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/1469785
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