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Genetic diversity and connectivity of chemosynthetic cold seep mussels from the U.S. Atlantic margin
BACKGROUND: Deep-sea mussels in the subfamily Bathymodiolinae have unique adaptations to colonize hydrothermal-vent and cold-seep environments throughout the world ocean. These invertebrates function as important ecosystem engineers, creating heterogeneous habitat and promoting biodiversity in the d...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9204967/ https://www.ncbi.nlm.nih.gov/pubmed/35715723 http://dx.doi.org/10.1186/s12862-022-02027-4 |
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author | DeLeo, Danielle M. Morrison, Cheryl L. Sei, Makiri Salamone, Veronica Demopoulos, Amanda W. J. Quattrini, Andrea M. |
author_facet | DeLeo, Danielle M. Morrison, Cheryl L. Sei, Makiri Salamone, Veronica Demopoulos, Amanda W. J. Quattrini, Andrea M. |
author_sort | DeLeo, Danielle M. |
collection | PubMed |
description | BACKGROUND: Deep-sea mussels in the subfamily Bathymodiolinae have unique adaptations to colonize hydrothermal-vent and cold-seep environments throughout the world ocean. These invertebrates function as important ecosystem engineers, creating heterogeneous habitat and promoting biodiversity in the deep sea. Despite their ecological significance, efforts to assess the diversity and connectivity of this group are extremely limited. Here, we present the first genomic-scale diversity assessments of the recently discovered bathymodioline cold-seep communities along the U.S. Atlantic margin, dominated by Gigantidas childressi and Bathymodiolus heckerae. RESULTS: A Restriction-site Associated DNA Sequencing (RADSeq) approach was used on 177 bathymodiolines to examine genetic diversity and population structure within and between seep sites. Assessments of genetic differentiation using single-nucleotide polymorphism (SNP) data revealed high gene flow among sites, with the shallower and more northern sites serving as source populations for deeper occurring G. childressi. No evidence was found for genetic diversification across depth in G. childressi, likely due to their high dispersal capabilities. Kinship analyses indicated a high degree of relatedness among individuals, and at least 10–20% of local recruits within a particular site. We also discovered candidate adaptive loci in G. childressi and B. heckerae that suggest differences in developmental processes and depth-related and metabolic adaptations to chemosynthetic environments. CONCLUSIONS: These results highlight putative source communities for an important ecosystem engineer in the deep sea that may be considered in future conservation efforts. Our results also provide clues into species-specific adaptations that enable survival and potential speciation within chemosynthetic ecosystems. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s12862-022-02027-4. |
format | Online Article Text |
id | pubmed-9204967 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-92049672022-06-18 Genetic diversity and connectivity of chemosynthetic cold seep mussels from the U.S. Atlantic margin DeLeo, Danielle M. Morrison, Cheryl L. Sei, Makiri Salamone, Veronica Demopoulos, Amanda W. J. Quattrini, Andrea M. BMC Ecol Evol Research BACKGROUND: Deep-sea mussels in the subfamily Bathymodiolinae have unique adaptations to colonize hydrothermal-vent and cold-seep environments throughout the world ocean. These invertebrates function as important ecosystem engineers, creating heterogeneous habitat and promoting biodiversity in the deep sea. Despite their ecological significance, efforts to assess the diversity and connectivity of this group are extremely limited. Here, we present the first genomic-scale diversity assessments of the recently discovered bathymodioline cold-seep communities along the U.S. Atlantic margin, dominated by Gigantidas childressi and Bathymodiolus heckerae. RESULTS: A Restriction-site Associated DNA Sequencing (RADSeq) approach was used on 177 bathymodiolines to examine genetic diversity and population structure within and between seep sites. Assessments of genetic differentiation using single-nucleotide polymorphism (SNP) data revealed high gene flow among sites, with the shallower and more northern sites serving as source populations for deeper occurring G. childressi. No evidence was found for genetic diversification across depth in G. childressi, likely due to their high dispersal capabilities. Kinship analyses indicated a high degree of relatedness among individuals, and at least 10–20% of local recruits within a particular site. We also discovered candidate adaptive loci in G. childressi and B. heckerae that suggest differences in developmental processes and depth-related and metabolic adaptations to chemosynthetic environments. CONCLUSIONS: These results highlight putative source communities for an important ecosystem engineer in the deep sea that may be considered in future conservation efforts. Our results also provide clues into species-specific adaptations that enable survival and potential speciation within chemosynthetic ecosystems. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s12862-022-02027-4. BioMed Central 2022-06-17 /pmc/articles/PMC9204967/ /pubmed/35715723 http://dx.doi.org/10.1186/s12862-022-02027-4 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/ (https://creativecommons.org/publicdomain/zero/1.0/) ) applies to the data made available in this article, unless otherwise stated in a credit line to the data. |
spellingShingle | Research DeLeo, Danielle M. Morrison, Cheryl L. Sei, Makiri Salamone, Veronica Demopoulos, Amanda W. J. Quattrini, Andrea M. Genetic diversity and connectivity of chemosynthetic cold seep mussels from the U.S. Atlantic margin |
title | Genetic diversity and connectivity of chemosynthetic cold seep mussels from the U.S. Atlantic margin |
title_full | Genetic diversity and connectivity of chemosynthetic cold seep mussels from the U.S. Atlantic margin |
title_fullStr | Genetic diversity and connectivity of chemosynthetic cold seep mussels from the U.S. Atlantic margin |
title_full_unstemmed | Genetic diversity and connectivity of chemosynthetic cold seep mussels from the U.S. Atlantic margin |
title_short | Genetic diversity and connectivity of chemosynthetic cold seep mussels from the U.S. Atlantic margin |
title_sort | genetic diversity and connectivity of chemosynthetic cold seep mussels from the u.s. atlantic margin |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9204967/ https://www.ncbi.nlm.nih.gov/pubmed/35715723 http://dx.doi.org/10.1186/s12862-022-02027-4 |
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