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Historical human activities reshape evolutionary trajectories across both native and introduced ranges

The same vectors that introduce species to new ranges could move them among native populations, but how human‐mediated dispersal impacts native ranges has been difficult to address because human‐mediated dispersal and natural dispersal can simultaneously shape patterns of gene flow. Here, we disenta...

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Autores principales: Einfeldt, Anthony L., Jesson, Linley K., Addison, Jason A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7381589/
https://www.ncbi.nlm.nih.gov/pubmed/32724534
http://dx.doi.org/10.1002/ece3.6391
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author Einfeldt, Anthony L.
Jesson, Linley K.
Addison, Jason A.
author_facet Einfeldt, Anthony L.
Jesson, Linley K.
Addison, Jason A.
author_sort Einfeldt, Anthony L.
collection PubMed
description The same vectors that introduce species to new ranges could move them among native populations, but how human‐mediated dispersal impacts native ranges has been difficult to address because human‐mediated dispersal and natural dispersal can simultaneously shape patterns of gene flow. Here, we disentangle human‐mediated dispersal from natural dispersal by exploiting a system where the primary vector was once extensive but has since ceased. From 10th to 19th Centuries, ships in the North Atlantic exchanged sediments dredged from the intertidal for ballast, which ended when seawater ballast tanks were adopted. We investigate genetic patterns from RADseq‐derived SNPs in the amphipod Corophium volutator (n = 121; 4,870 SNPs) and the annelid Hediste diversicolor (n = 78; 3,820 SNPs), which were introduced from Europe to North America, have limited natural dispersal capabilities, are abundant in intertidal sediments, but not commonly found in modern water ballast tanks. We detect similar levels of genetic subdivision among introduced North American populations and among native European populations. Phylogenetic networks and clustering analyses reveal population structure between sites, a high degree of phylogenetic reticulation within ranges, and phylogenetic splits between European and North American populations. These patterns are inconsistent with phylogeographic structure expected to arise from natural dispersal alone, suggesting human activity eroded ancestral phylogeographic structure between native populations, but was insufficient to overcome divergent processes between naturalized populations and their sources. Our results suggest human activity may alter species' evolutionary trajectories on a broad geographic scale via regional homogenization and global diversification, in some cases precluding historical inference from genetic data.
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spelling pubmed-73815892020-07-27 Historical human activities reshape evolutionary trajectories across both native and introduced ranges Einfeldt, Anthony L. Jesson, Linley K. Addison, Jason A. Ecol Evol Original Research The same vectors that introduce species to new ranges could move them among native populations, but how human‐mediated dispersal impacts native ranges has been difficult to address because human‐mediated dispersal and natural dispersal can simultaneously shape patterns of gene flow. Here, we disentangle human‐mediated dispersal from natural dispersal by exploiting a system where the primary vector was once extensive but has since ceased. From 10th to 19th Centuries, ships in the North Atlantic exchanged sediments dredged from the intertidal for ballast, which ended when seawater ballast tanks were adopted. We investigate genetic patterns from RADseq‐derived SNPs in the amphipod Corophium volutator (n = 121; 4,870 SNPs) and the annelid Hediste diversicolor (n = 78; 3,820 SNPs), which were introduced from Europe to North America, have limited natural dispersal capabilities, are abundant in intertidal sediments, but not commonly found in modern water ballast tanks. We detect similar levels of genetic subdivision among introduced North American populations and among native European populations. Phylogenetic networks and clustering analyses reveal population structure between sites, a high degree of phylogenetic reticulation within ranges, and phylogenetic splits between European and North American populations. These patterns are inconsistent with phylogeographic structure expected to arise from natural dispersal alone, suggesting human activity eroded ancestral phylogeographic structure between native populations, but was insufficient to overcome divergent processes between naturalized populations and their sources. Our results suggest human activity may alter species' evolutionary trajectories on a broad geographic scale via regional homogenization and global diversification, in some cases precluding historical inference from genetic data. John Wiley and Sons Inc. 2020-05-24 /pmc/articles/PMC7381589/ /pubmed/32724534 http://dx.doi.org/10.1002/ece3.6391 Text en © 2020 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Research
Einfeldt, Anthony L.
Jesson, Linley K.
Addison, Jason A.
Historical human activities reshape evolutionary trajectories across both native and introduced ranges
title Historical human activities reshape evolutionary trajectories across both native and introduced ranges
title_full Historical human activities reshape evolutionary trajectories across both native and introduced ranges
title_fullStr Historical human activities reshape evolutionary trajectories across both native and introduced ranges
title_full_unstemmed Historical human activities reshape evolutionary trajectories across both native and introduced ranges
title_short Historical human activities reshape evolutionary trajectories across both native and introduced ranges
title_sort historical human activities reshape evolutionary trajectories across both native and introduced ranges
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7381589/
https://www.ncbi.nlm.nih.gov/pubmed/32724534
http://dx.doi.org/10.1002/ece3.6391
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