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Keywords = sandpaper fig

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17 pages, 4900 KiB  
Article
Allele Surfing and Holocene Expansion of an Australian Fig (Ficus—Moraceae)
by Brendan C. Wilde, Susan Rutherford, Jia-Yee S. Yap and Maurizio Rossetto
Diversity 2021, 13(6), 250; https://doi.org/10.3390/d13060250 - 7 Jun 2021
Cited by 2 | Viewed by 4467
Abstract
The creek sandpaper fig of southeastern Australia, Ficus coronata Spin, is culturally significant to Australian traditional owners who made use of the leaves to smooth timber and ate the fruit. The species is thought to have a long history on the continent, with [...] Read more.
The creek sandpaper fig of southeastern Australia, Ficus coronata Spin, is culturally significant to Australian traditional owners who made use of the leaves to smooth timber and ate the fruit. The species is thought to have a long history on the continent, with some suggesting a Gondwanan origin. However, distributional patterns and overall ecology suggest a recent expansion across suitable habitats. We used landscape genomic techniques and environmental niche modelling to reconstruct its history and explore whether the species underwent a recent and rapid expansion along the east coast of New South Wales. Genomic analysis of 178 specimens collected from 32 populations throughout the species’ New South Wales distribution revealed a lack of genetic diversity and population structure. Some populations at the species’ southern and western range limits displayed unexpected diversity, which appears to be the result of allele surfing. Field work and genetic evidence suggest a Holocene expansion which may have increased since European colonisation. We also present a novel method for detecting allele surfing—MAHF (minor allele at highest frequency). Full article
(This article belongs to the Special Issue Evolutionary Ecology and Conservation of Native Plants)
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