Cryptic species and hybridisation in corals: challenges and opportunities for conservation and restoration
The conservation and management of coral reef ecosystems will benefit from accurate assessments of reef-building coral species diversity. However, the true diversity of corals may be obfuscated by cryptic yet genetically distinct groups, which are likely more pervasive than currently recognised. Her...
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| Language: | English |
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2024-11-01
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| Online Access: | https://peercommunityjournal.org/articles/10.24072/pcjournal.492/ |
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| author | Riginos, Cynthia Popovic, Iva Meziere, Zoe Garcia, Vhon Byrne, Ilha Howitt, Samantha M. Ishida, Hisatake Bairos-Novak, Kevin Humanes, Adriana Scharfenstein, Hugo Richards, Thomas Briggs, Ethan Clark, Vanessa Lei, Chuan Khan, Mariam Prata, Katharine E. |
| author_facet | Riginos, Cynthia Popovic, Iva Meziere, Zoe Garcia, Vhon Byrne, Ilha Howitt, Samantha M. Ishida, Hisatake Bairos-Novak, Kevin Humanes, Adriana Scharfenstein, Hugo Richards, Thomas Briggs, Ethan Clark, Vanessa Lei, Chuan Khan, Mariam Prata, Katharine E. |
| author_sort | Riginos, Cynthia |
| collection | DOAJ |
| description | The conservation and management of coral reef ecosystems will benefit from accurate assessments of reef-building coral species diversity. However, the true diversity of corals may be obfuscated by cryptic yet genetically distinct groups, which are likely more pervasive than currently recognised. Here, we investigate the prevalence of cryptic coral groups and assess evidence for their permeability to gene flow (hybridisation) via a structured literature review of genomic studies. Using reproducible criteria to detect distinct genetic groups that are sympatric, we find that 68% of nominal species represented in population genomic studies show evidence for comprising partially reproductively isolated groups and that these distinct groups are often linked by gene flow. Cryptic genetic groups frequently segregate by environment, especially depth, and may differ by phenotypic characteristics including resilience to heat stress. This hidden biodiversity creates challenges for coral conservation and restoration planning that are not well appreciated, including hiding true population declines, biasing estimates for species’ phenotypic breadth, overestimating the resilience of species to stressors, yielding uncertainty in evolutionary dynamics inferred from past studies, and implying that reproductive barriers may limit mating between local and translocated corals. Incorporating the expectation that coral cryptic taxa with incomplete species boundaries will frequently be encountered is critical to the long-term success of coral conservation and restoration programs. Studying these phenomena in more detail will directly benefit conservation and restoration goals. Thus, we detail recommendations for best practice and strategies for identifying cryptic taxa and hybridisation. In addition, cryptic coral taxa present an untapped resource for studying speciation which could provide rich opportunities for collaboration among coral and speciation biologists and fill key knowledge gaps relevant to conservation and restoration. |
| format | Article |
| id | doaj-art-331a6ef6bb244c2ca1e7d436211e09f5 |
| institution | Kabale University |
| issn | 2804-3871 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Peer Community In |
| record_format | Article |
| series | Peer Community Journal |
| spelling | doaj-art-331a6ef6bb244c2ca1e7d436211e09f52025-02-07T10:17:17ZengPeer Community InPeer Community Journal2804-38712024-11-01410.24072/pcjournal.49210.24072/pcjournal.492Cryptic species and hybridisation in corals: challenges and opportunities for conservation and restoration Riginos, Cynthia0https://orcid.org/0000-0002-5485-4197Popovic, Iva1https://orcid.org/0000-0001-6582-4236Meziere, Zoe2https://orcid.org/0000-0001-6874-8523Garcia, Vhon3https://orcid.org/0000-0002-8933-452XByrne, Ilha4https://orcid.org/0000-0003-3909-2902Howitt, Samantha M.5https://orcid.org/0009-0002-6272-5261Ishida, Hisatake6https://orcid.org/0000-0001-8401-8395Bairos-Novak, Kevin7https://orcid.org/0000-0002-0152-1452Humanes, Adriana8https://orcid.org/0000-0001-7962-2635Scharfenstein, Hugo9https://orcid.org/0000-0003-3408-2350Richards, Thomas10https://orcid.org/0000-0001-5945-6545Briggs, Ethan11https://orcid.org/0000-0002-3475-5669Clark, Vanessa12https://orcid.org/0000-0001-6125-9399Lei, Chuan13https://orcid.org/0000-0002-5691-8545Khan, Mariam14https://orcid.org/0009-0008-8530-1465Prata, Katharine E.15https://orcid.org/0000-0001-6679-0066School of the Environment, The University of Queensland, St Lucia, QLD, Australia; Department of Marine Sciences – Tjärnö Marine Laboratory, University of Gothenburg, Strömstad, Sweden; Australian Institute of Marine Science, Townsville, QLD, AustraliaSchool of the Environment, The University of Queensland, St Lucia, QLD, Australia; Australian Institute of Marine Science, Townsville, QLD, AustraliaSchool of the Environment, The University of Queensland, St Lucia, QLD, Australia; Australian Institute of Marine Science, Townsville, QLD, AustraliaSchool of the Environment, The University of Queensland, St Lucia, QLD, AustraliaSchool of the Environment, The University of Queensland, St Lucia, QLD, Australia; Australian Institute of Marine Science, Townsville, QLD, AustraliaSchool of the Environment, The University of Queensland, St Lucia, QLD, AustraliaSchool of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD, AustraliaSchool of the Environment, The University of Queensland, St Lucia, QLD, AustraliaSchool of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, UKSchool of BioSciences, The University of Melbourne, Melbourne, VIC, AustraliaSchool of the Environment, The University of Queensland, St Lucia, QLD, AustraliaSchool of the Environment, The University of Queensland, St Lucia, QLD, AustraliaSchool of the Environment, The University of Queensland, St Lucia, QLD, AustraliaSchool of the Environment, The University of Queensland, St Lucia, QLD, AustraliaSchool of the Environment, The University of Queensland, St Lucia, QLD, AustraliaSchool of the Environment, The University of Queensland, St Lucia, QLD, Australia; Australian Institute of Marine Science, Townsville, QLD, AustraliaThe conservation and management of coral reef ecosystems will benefit from accurate assessments of reef-building coral species diversity. However, the true diversity of corals may be obfuscated by cryptic yet genetically distinct groups, which are likely more pervasive than currently recognised. Here, we investigate the prevalence of cryptic coral groups and assess evidence for their permeability to gene flow (hybridisation) via a structured literature review of genomic studies. Using reproducible criteria to detect distinct genetic groups that are sympatric, we find that 68% of nominal species represented in population genomic studies show evidence for comprising partially reproductively isolated groups and that these distinct groups are often linked by gene flow. Cryptic genetic groups frequently segregate by environment, especially depth, and may differ by phenotypic characteristics including resilience to heat stress. This hidden biodiversity creates challenges for coral conservation and restoration planning that are not well appreciated, including hiding true population declines, biasing estimates for species’ phenotypic breadth, overestimating the resilience of species to stressors, yielding uncertainty in evolutionary dynamics inferred from past studies, and implying that reproductive barriers may limit mating between local and translocated corals. Incorporating the expectation that coral cryptic taxa with incomplete species boundaries will frequently be encountered is critical to the long-term success of coral conservation and restoration programs. Studying these phenomena in more detail will directly benefit conservation and restoration goals. Thus, we detail recommendations for best practice and strategies for identifying cryptic taxa and hybridisation. In addition, cryptic coral taxa present an untapped resource for studying speciation which could provide rich opportunities for collaboration among coral and speciation biologists and fill key knowledge gaps relevant to conservation and restoration.https://peercommunityjournal.org/articles/10.24072/pcjournal.492/adaptation, conservation, coral, cryptic species, ecotype, gene flow, hybridization, introgression, conservation, restoration, speciation |
| spellingShingle | Riginos, Cynthia Popovic, Iva Meziere, Zoe Garcia, Vhon Byrne, Ilha Howitt, Samantha M. Ishida, Hisatake Bairos-Novak, Kevin Humanes, Adriana Scharfenstein, Hugo Richards, Thomas Briggs, Ethan Clark, Vanessa Lei, Chuan Khan, Mariam Prata, Katharine E. Cryptic species and hybridisation in corals: challenges and opportunities for conservation and restoration Peer Community Journal adaptation, conservation, coral, cryptic species, ecotype, gene flow, hybridization, introgression, conservation, restoration, speciation |
| title | Cryptic species and hybridisation in corals: challenges and opportunities for conservation and restoration
|
| title_full | Cryptic species and hybridisation in corals: challenges and opportunities for conservation and restoration
|
| title_fullStr | Cryptic species and hybridisation in corals: challenges and opportunities for conservation and restoration
|
| title_full_unstemmed | Cryptic species and hybridisation in corals: challenges and opportunities for conservation and restoration
|
| title_short | Cryptic species and hybridisation in corals: challenges and opportunities for conservation and restoration
|
| title_sort | cryptic species and hybridisation in corals challenges and opportunities for conservation and restoration |
| topic | adaptation, conservation, coral, cryptic species, ecotype, gene flow, hybridization, introgression, conservation, restoration, speciation |
| url | https://peercommunityjournal.org/articles/10.24072/pcjournal.492/ |
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