Rare, long‐distance dispersal underpins genetic connectivity in the pink sea fan, Eunicella verrucosa
Abstract Characterizing patterns of genetic connectivity in marine species is of critical importance given the anthropogenic pressures placed on the marine environment. For sessile species, population connectivity can be shaped by many processes, such as pelagic larval duration, oceanographic bounda...
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ftdoajarticles:oai:doaj.org/article:f634631a95894a8c9f223b1b1d1c5630 2024-09-15T18:25:28+00:00 Rare, long‐distance dispersal underpins genetic connectivity in the pink sea fan, Eunicella verrucosa Kirsty L. Macleod Tom L. Jenkins Matthew J. Witt Jamie R. Stevens 2024-03-01T00:00:00Z https://doi.org/10.1111/eva.13649 https://doaj.org/article/f634631a95894a8c9f223b1b1d1c5630 EN eng Wiley https://doi.org/10.1111/eva.13649 https://doaj.org/toc/1752-4571 1752-4571 doi:10.1111/eva.13649 https://doaj.org/article/f634631a95894a8c9f223b1b1d1c5630 Evolutionary Applications, Vol 17, Iss 3, Pp n/a-n/a (2024) genetic structure oceanographic modelling octocoral RAD sequencing single nucleotide polymorphism Evolution QH359-425 article 2024 ftdoajarticles https://doi.org/10.1111/eva.13649 2024-08-05T17:49:45Z Abstract Characterizing patterns of genetic connectivity in marine species is of critical importance given the anthropogenic pressures placed on the marine environment. For sessile species, population connectivity can be shaped by many processes, such as pelagic larval duration, oceanographic boundaries and currents. This study combines restriction‐site associated DNA sequencing (RADseq) and passive particle dispersal modelling to delineate patterns of population connectivity in the pink sea fan, Eunicella verrucosa, a temperate octocoral. Individuals were sampled from 20 sites covering most of the species' northeast Atlantic range, and a site in the northwest Mediterranean Sea to inform on connectivity across the Atlantic‐Mediterranean transition. Using 7510 neutral SNPs, a geographic cline of genetic clusters was detected, partitioning into Ireland, Britain, France, Spain (Atlantic), and Portugal and Spain (Mediterranean). Evidence of significant inbreeding was detected at all sites, a finding not detected in a previous study of this species based on microsatellite loci. Genetic connectivity was characterized by an isolation by distance pattern (IBD) (r2 = 0.78, p < 0.001), which persisted across the Mediterranean‐Atlantic boundary. In contrast, exploration of ancestral population assignment using the program ADMIXTURE indicated genetic partitioning across the Bay of Biscay, which we suggest represents a natural break in the species' range, possibly linked to a lack of suitable habitat. As the pelagic larval duration (PLD) is unknown, passive particle dispersal simulations were run for 14 and 21 days. For both modelled PLDs, inter‐annual variations in particle trajectories suggested that in a long‐lived, sessile species, range‐wide IBD is driven by rare, longer dispersal events that act to maintain gene flow. These results suggest that oceanographic patterns may facilitate range‐wide stepping‐stone genetic connectivity in E. verrucosa and highlight that both oceanography and natural breaks in a species' ... Article in Journal/Newspaper Northeast Atlantic Directory of Open Access Journals: DOAJ Articles Evolutionary Applications 17 3 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
genetic structure oceanographic modelling octocoral RAD sequencing single nucleotide polymorphism Evolution QH359-425 |
spellingShingle |
genetic structure oceanographic modelling octocoral RAD sequencing single nucleotide polymorphism Evolution QH359-425 Kirsty L. Macleod Tom L. Jenkins Matthew J. Witt Jamie R. Stevens Rare, long‐distance dispersal underpins genetic connectivity in the pink sea fan, Eunicella verrucosa |
topic_facet |
genetic structure oceanographic modelling octocoral RAD sequencing single nucleotide polymorphism Evolution QH359-425 |
description |
Abstract Characterizing patterns of genetic connectivity in marine species is of critical importance given the anthropogenic pressures placed on the marine environment. For sessile species, population connectivity can be shaped by many processes, such as pelagic larval duration, oceanographic boundaries and currents. This study combines restriction‐site associated DNA sequencing (RADseq) and passive particle dispersal modelling to delineate patterns of population connectivity in the pink sea fan, Eunicella verrucosa, a temperate octocoral. Individuals were sampled from 20 sites covering most of the species' northeast Atlantic range, and a site in the northwest Mediterranean Sea to inform on connectivity across the Atlantic‐Mediterranean transition. Using 7510 neutral SNPs, a geographic cline of genetic clusters was detected, partitioning into Ireland, Britain, France, Spain (Atlantic), and Portugal and Spain (Mediterranean). Evidence of significant inbreeding was detected at all sites, a finding not detected in a previous study of this species based on microsatellite loci. Genetic connectivity was characterized by an isolation by distance pattern (IBD) (r2 = 0.78, p < 0.001), which persisted across the Mediterranean‐Atlantic boundary. In contrast, exploration of ancestral population assignment using the program ADMIXTURE indicated genetic partitioning across the Bay of Biscay, which we suggest represents a natural break in the species' range, possibly linked to a lack of suitable habitat. As the pelagic larval duration (PLD) is unknown, passive particle dispersal simulations were run for 14 and 21 days. For both modelled PLDs, inter‐annual variations in particle trajectories suggested that in a long‐lived, sessile species, range‐wide IBD is driven by rare, longer dispersal events that act to maintain gene flow. These results suggest that oceanographic patterns may facilitate range‐wide stepping‐stone genetic connectivity in E. verrucosa and highlight that both oceanography and natural breaks in a species' ... |
format |
Article in Journal/Newspaper |
author |
Kirsty L. Macleod Tom L. Jenkins Matthew J. Witt Jamie R. Stevens |
author_facet |
Kirsty L. Macleod Tom L. Jenkins Matthew J. Witt Jamie R. Stevens |
author_sort |
Kirsty L. Macleod |
title |
Rare, long‐distance dispersal underpins genetic connectivity in the pink sea fan, Eunicella verrucosa |
title_short |
Rare, long‐distance dispersal underpins genetic connectivity in the pink sea fan, Eunicella verrucosa |
title_full |
Rare, long‐distance dispersal underpins genetic connectivity in the pink sea fan, Eunicella verrucosa |
title_fullStr |
Rare, long‐distance dispersal underpins genetic connectivity in the pink sea fan, Eunicella verrucosa |
title_full_unstemmed |
Rare, long‐distance dispersal underpins genetic connectivity in the pink sea fan, Eunicella verrucosa |
title_sort |
rare, long‐distance dispersal underpins genetic connectivity in the pink sea fan, eunicella verrucosa |
publisher |
Wiley |
publishDate |
2024 |
url |
https://doi.org/10.1111/eva.13649 https://doaj.org/article/f634631a95894a8c9f223b1b1d1c5630 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
Evolutionary Applications, Vol 17, Iss 3, Pp n/a-n/a (2024) |
op_relation |
https://doi.org/10.1111/eva.13649 https://doaj.org/toc/1752-4571 1752-4571 doi:10.1111/eva.13649 https://doaj.org/article/f634631a95894a8c9f223b1b1d1c5630 |
op_doi |
https://doi.org/10.1111/eva.13649 |
container_title |
Evolutionary Applications |
container_volume |
17 |
container_issue |
3 |
_version_ |
1810465989066752000 |