Journal article
Archipelagos of the Anthropocene: rapid and extensive differentiation of native terrestrial vertebrates in a single metropolis
Molecular Ecology, Vol.26(9), pp.2466-2481
2017
Abstract
Some of the best evidence for rapid evolutionary change comes from studies of archipelagos and oceanic islands. City parks are analogous systems as they create geographically isolated green spaces that differ in size, structure, and complexity. Very little, however, is known about whether city parks in single urban centres drive selection and result in the diversification of native species. Here, we provide evidence for the rapid genetic and morphological differentiation of a native lizard (Intellagama lesueurii) at four geographically close yet unconnected parks within one city. Year of establishment of each city park varied from 1855 (oldest) to 2001 (youngest) equating to a generation time range of 32 to three generations. Genetic divergence among city park populations was large despite the small pairwise geographic distances (< 5km) and found to be two to three times higher for microsatellites and three to 33 times higher for mtDNA relative to non-urban populations. Patterns of morphological differentiation were also found to be most extensive among the four city park populations. In contrast to non-urban populations, city park populations showed significant differentiation in relative body size, relative head and limb morphology and relative forelimb and hindlimb length. Crucially, we show that these patterns of differentiation are unlikely to have been caused by founder events and/or drift alone. Our results suggest that city park 'archipelagos' could represent theatres for rapid evolution that may, in time, favour adaptive diversification.
Details
- Title
- Archipelagos of the Anthropocene: rapid and extensive differentiation of native terrestrial vertebrates in a single metropolis
- Authors
- Bethan Littleford-Colquhoun (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and EngineeringChristofer J Clemente (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and EngineeringMartin J Whiting (Author) - Macquarie UniversityDaniel Ortiz-Barrientos (Author) - University of QueenslandCeline H Frere (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
- Publication details
- Molecular Ecology, Vol.26(9), pp.2466-2481
- Publisher
- Wiley-Blackwell Publishing Ltd.
- Date published
- 2017
- DOI
- 10.1111/mec.14042
- ISSN
- 0962-1083
- Copyright note
- Copyright © 2017 Wiley-Blackwell Publishing Ltd. This is the accepted version of the following article: Littleford-Colquhoun, B. L., Clemente, C., Whiting, M. J., Ortiz-Barrientos, D. and Frère, C. H. (2017), Archipelagos of the Anthropocene: rapid and extensive differentiation of native terrestrial vertebrates in a single metropolis. Mol Ecol, 26: 2466-2481. doi:10.1111/mec.14042, which has been published in final form at http://dx.doi.org/10.1111/mec.14042
- Organisation Unit
- School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; GeneCology Research Centre - Legacy; School of Science, Technology and Engineering
- Language
- English
- Record Identifier
- 99451067002621
- Output Type
- Journal article
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- Collaboration types
- Domestic collaboration
- Web Of Science research areas
- Biochemistry & Molecular Biology
- Ecology
- Evolutionary Biology