Abstract:
BACKGROUND:As global change and anthropogenic pressures continue to increase, conservation and management increasingly needs to consider species' potential to adapt to novel environmental conditions. Therefore, it is imperative to characterise the main selective forces acting on ecosystems, and how these may influence the evolutionary potential of populations and species. Using a multi-model seascape genomics approach, we compare putative environmental drivers of selection in three sympatric southern African marine invertebrates with contrasting ecology and life histories: Cape urchin (Parechinus angulosus), Common shore crab (Cyclograpsus punctatus), and Granular limpet (Scutellastra granularis). RESULTS:Using pooled (Pool-seq), restriction-site associated DNA sequencing (RAD-seq), and seven outlier detection methods, we characterise genomic variation between populations along a strong biogeographical gradient. Of the three species, only S. granularis showed significant isolation-by-distance, and isolation-by-environment driven by sea surface temperatures (SST). In contrast, sea surface salinity (SSS) and range in air temperature correlated more strongly with genomic variation in C. punctatus and P. angulosus. Differences were also found in genomic structuring between the three species, with outlier loci contributing to two clusters in the East and West Coasts for S. granularis and P. angulosus, but not for C. punctatus. CONCLUSION:The findings illustrate distinct evolutionary potential across species, suggesting that species-specific habitat requirements and responses to environmental stresses may be better predictors of evolutionary patterns than the strong environmental gradients within the region. We also found large discrepancies between outlier detection methodologies, and thus offer a novel multi-model approach to identifying the principal environmental selection forces acting on species. Overall, this work highlights how adding a comparative approach to seascape genomics (both with multiple models and species) can elucidate the intricate evolutionary responses of ecosystems to global change.
journal_name
BMC Evol Bioljournal_title
BMC evolutionary biologyauthors
Nielsen ES,Henriques R,Beger M,Toonen RJ,von der Heyden Sdoi
10.1186/s12862-020-01679-4subject
Has Abstractpub_date
2020-09-16 00:00:00pages
121issue
1issn
1471-2148pii
10.1186/s12862-020-01679-4journal_volume
20pub_type
杂志文章abstract:BACKGROUND:For over 50 years, attempts have been made to introgress agronomically useful traits from Erianthus sect. Ripidium (Tripidium) species into sugarcane based on both genera being part of the 'Saccharum Complex', an interbreeding group of species believed to be involved in the origins of sugarcane. However, rec...
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更新日期:2010-08-17 00:00:00
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更新日期:2010-06-11 00:00:00
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更新日期:2011-12-16 00:00:00
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更新日期:2013-11-27 00:00:00
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更新日期:2008-08-19 00:00:00
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pub_type: 杂志文章
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更新日期:2008-04-11 00:00:00
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更新日期:2012-01-17 00:00:00
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pub_type: 杂志文章,收录出版
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pub_type: 杂志文章
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更新日期:2008-04-23 00:00:00
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更新日期:2017-01-31 00:00:00
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