Genetic structure along the strandline: Unravelling invasion history in a one-dimensional system

S Ohadi; PK Ades; R Ford; AE Strand; J Tibbits; MB Mesgaran; RD Cousens

Journal article

Genetic structure along the strandline: Unravelling invasion history in a one-dimensional system

S Ohadi, PK Ades, R Ford, AE Strand, J Tibbits, MB Mesgaran, RD Cousens

Journal of Biogeography | WILEY | Published : 2016

DOI: 10.1111/jbi.12640

Abstract

Aim: To unravel the genetic processes involved in a case of invasion by one species, the self-incompatible Cakile maritima Scop. (Brassicaceae) in Australia, as it has replaced a related prior invader, Cakile edentula (Bigelow) Hook. Location: Southern and eastern coastlines of Australia. Methods: Genetic diversity within and between populations was characterized at a continental scale using microsatellite (SSR) markers to examine nuclear diversity and cleaved amplified polymorphic sequence (CAPS) markers to examine chloroplasts. DNA was sourced from 24 populations of C. maritima along its putative invasion trajectory and, for comparison, from four populations of C. edentula that are current..

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University of Melbourne Researchers

Peter Ades Author

Roger Cousens Author

Related Projects (1)

Interactions among invading species: transient hybridisation and rates of replacement

Habitats are often invaded sequentially by multiple species. Interactions between these invaders can potentially alter their rates of spread..

Grants

Funding Acknowledgements

We thank Audrey Leo for her help with the molecular work. Special thanks go to Marie Jasieniuk and Miki Okada for extracting DNA from some North American samples and to all the volunteers who collected samples of Cakile in Australia and overseas. S.O. was funded by a Victorian International Research Scholarship.