Adaptive alien genes are maintained amid a vanishing introgression footprint in a sea squirt
International audience Human transport of species across oceans disrupts natural dispersal barriers and facilitates hybridization between previously allopatric species. The recent introduction of the North Pacific sea squirt, Ciona robusta, into the native range of the North Atlantic sea squirt, Cio...
Published in: | Evolution Letters |
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Online Access: | https://hal.science/hal-04562298 https://hal.science/hal-04562298/document https://hal.science/hal-04562298/file/Touchard_2024_EvolLet.pdf https://doi.org/10.1093/evlett/qrae016 |
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ftanrparis:oai:HAL:hal-04562298v1 2024-09-15T18:24:17+00:00 Adaptive alien genes are maintained amid a vanishing introgression footprint in a sea squirt Touchard, Fanny Cerqueira, Frédérique Bierne, Nicolas Viard, Frédérique Institut des Sciences de l'Evolution de Montpellier (UMR ISEM) Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Institut de recherche pour le développement IRD : UR226-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM) ANRANR-10-LABX-04-01 (Labex CeMEB) ANR-16-IDEX-0006,MUSE,MUSE(2016) ANR-23-CE02-0020,DockEvol,DockEvol: utiliser les ports comme des laboratoires darwiniens pour étudier l'évolution marine dans l'Anthopocène(2023) 2024-04-27 https://hal.science/hal-04562298 https://hal.science/hal-04562298/document https://hal.science/hal-04562298/file/Touchard_2024_EvolLet.pdf https://doi.org/10.1093/evlett/qrae016 en eng HAL CCSD Wiley Open Access info:eu-repo/semantics/altIdentifier/doi/10.1093/evlett/qrae016 hal-04562298 https://hal.science/hal-04562298 https://hal.science/hal-04562298/document https://hal.science/hal-04562298/file/Touchard_2024_EvolLet.pdf doi:10.1093/evlett/qrae016 info:eu-repo/semantics/OpenAccess ISSN: 2056-3744 Evolution Letters https://hal.science/hal-04562298 Evolution Letters, 2024, ⟨10.1093/evlett/qrae016⟩ Biological invasions Adaptive introgression Selective sweep Local adaptation Anthropogenic hybridization Marinas [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] [SDV.BBM.GTP]Life Sciences [q-bio]/Biochemistry Molecular Biology/Genomics [q-bio.GN] [SDV.BID]Life Sciences [q-bio]/Biodiversity info:eu-repo/semantics/article Journal articles 2024 ftanrparis https://doi.org/10.1093/evlett/qrae016 2024-07-31T23:35:33Z International audience Human transport of species across oceans disrupts natural dispersal barriers and facilitates hybridization between previously allopatric species. The recent introduction of the North Pacific sea squirt, Ciona robusta, into the native range of the North Atlantic sea squirt, Ciona intestinalis, is a good example of this outcome. Recent studies have revealed an adaptive introgression in a single chromosomal region from the introduced into the native species. Here, we monitored this adaptive introgression over time, examining both the frequency of adaptive alleles at the core and the hitchhiking footprint in the shoulders of the introgression island by studying a thousand Ciona spp. individuals collected in 22 ports of the contact zone, 14 of which were sampled 20 generations apart. For that purpose, we developed a KASP multiplex genotyping approach, which proved effective in identifying native, nonindigenous and hybrid individuals and in detecting introgressed haplotypes. We found no early generation hybrids in the entire sample, and field observations suggest a decline in the introduced species. At the core region of the introgression sweep, where the frequency of C. robusta alleles is the highest and local adaptation genes must be, we observed stable frequencies of adaptive alien alleles in both space and time. In contrast, we observed erosion of C. robusta ancestry tracts in flanking chromosomal shoulders on the edges of the core, consistent with the second phase of a local sweep and a purge of hitchhiked incompatible mutations. We hypothesize that adaptive introgression may have modified the competition relationships between the native and invasive species in human-altered environments. Article in Journal/Newspaper North Atlantic Portail HAL-ANR (Agence Nationale de la Recherche) Evolution Letters |
institution |
Open Polar |
collection |
Portail HAL-ANR (Agence Nationale de la Recherche) |
op_collection_id |
ftanrparis |
language |
English |
topic |
Biological invasions Adaptive introgression Selective sweep Local adaptation Anthropogenic hybridization Marinas [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] [SDV.BBM.GTP]Life Sciences [q-bio]/Biochemistry Molecular Biology/Genomics [q-bio.GN] [SDV.BID]Life Sciences [q-bio]/Biodiversity |
spellingShingle |
Biological invasions Adaptive introgression Selective sweep Local adaptation Anthropogenic hybridization Marinas [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] [SDV.BBM.GTP]Life Sciences [q-bio]/Biochemistry Molecular Biology/Genomics [q-bio.GN] [SDV.BID]Life Sciences [q-bio]/Biodiversity Touchard, Fanny Cerqueira, Frédérique Bierne, Nicolas Viard, Frédérique Adaptive alien genes are maintained amid a vanishing introgression footprint in a sea squirt |
topic_facet |
Biological invasions Adaptive introgression Selective sweep Local adaptation Anthropogenic hybridization Marinas [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] [SDV.BBM.GTP]Life Sciences [q-bio]/Biochemistry Molecular Biology/Genomics [q-bio.GN] [SDV.BID]Life Sciences [q-bio]/Biodiversity |
description |
International audience Human transport of species across oceans disrupts natural dispersal barriers and facilitates hybridization between previously allopatric species. The recent introduction of the North Pacific sea squirt, Ciona robusta, into the native range of the North Atlantic sea squirt, Ciona intestinalis, is a good example of this outcome. Recent studies have revealed an adaptive introgression in a single chromosomal region from the introduced into the native species. Here, we monitored this adaptive introgression over time, examining both the frequency of adaptive alleles at the core and the hitchhiking footprint in the shoulders of the introgression island by studying a thousand Ciona spp. individuals collected in 22 ports of the contact zone, 14 of which were sampled 20 generations apart. For that purpose, we developed a KASP multiplex genotyping approach, which proved effective in identifying native, nonindigenous and hybrid individuals and in detecting introgressed haplotypes. We found no early generation hybrids in the entire sample, and field observations suggest a decline in the introduced species. At the core region of the introgression sweep, where the frequency of C. robusta alleles is the highest and local adaptation genes must be, we observed stable frequencies of adaptive alien alleles in both space and time. In contrast, we observed erosion of C. robusta ancestry tracts in flanking chromosomal shoulders on the edges of the core, consistent with the second phase of a local sweep and a purge of hitchhiked incompatible mutations. We hypothesize that adaptive introgression may have modified the competition relationships between the native and invasive species in human-altered environments. |
author2 |
Institut des Sciences de l'Evolution de Montpellier (UMR ISEM) Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Institut de recherche pour le développement IRD : UR226-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM) ANRANR-10-LABX-04-01 (Labex CeMEB) ANR-16-IDEX-0006,MUSE,MUSE(2016) ANR-23-CE02-0020,DockEvol,DockEvol: utiliser les ports comme des laboratoires darwiniens pour étudier l'évolution marine dans l'Anthopocène(2023) |
format |
Article in Journal/Newspaper |
author |
Touchard, Fanny Cerqueira, Frédérique Bierne, Nicolas Viard, Frédérique |
author_facet |
Touchard, Fanny Cerqueira, Frédérique Bierne, Nicolas Viard, Frédérique |
author_sort |
Touchard, Fanny |
title |
Adaptive alien genes are maintained amid a vanishing introgression footprint in a sea squirt |
title_short |
Adaptive alien genes are maintained amid a vanishing introgression footprint in a sea squirt |
title_full |
Adaptive alien genes are maintained amid a vanishing introgression footprint in a sea squirt |
title_fullStr |
Adaptive alien genes are maintained amid a vanishing introgression footprint in a sea squirt |
title_full_unstemmed |
Adaptive alien genes are maintained amid a vanishing introgression footprint in a sea squirt |
title_sort |
adaptive alien genes are maintained amid a vanishing introgression footprint in a sea squirt |
publisher |
HAL CCSD |
publishDate |
2024 |
url |
https://hal.science/hal-04562298 https://hal.science/hal-04562298/document https://hal.science/hal-04562298/file/Touchard_2024_EvolLet.pdf https://doi.org/10.1093/evlett/qrae016 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 2056-3744 Evolution Letters https://hal.science/hal-04562298 Evolution Letters, 2024, ⟨10.1093/evlett/qrae016⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1093/evlett/qrae016 hal-04562298 https://hal.science/hal-04562298 https://hal.science/hal-04562298/document https://hal.science/hal-04562298/file/Touchard_2024_EvolLet.pdf doi:10.1093/evlett/qrae016 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1093/evlett/qrae016 |
container_title |
Evolution Letters |
_version_ |
1810464620670877696 |