Cargando…

Ploidy Variation and Its Implications for Reproduction and Population Dynamics in Two Sympatric Hawaiian Coral Species

Standing genetic variation is a major driver of fitness and resilience and therefore of fundamental importance for threatened species such as stony corals. We analyzed RNA-seq data generated from 132 Montipora capitata and 119 Pocillopora acuta coral colonies collected from Kāneʻohe Bay, Oʻahu, Hawa...

Descripción completa

Detalles Bibliográficos
Autores principales: Stephens, Timothy G, Strand, Emma L, Putnam, Hollie M, Bhattacharya, Debashish
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10445776/
https://www.ncbi.nlm.nih.gov/pubmed/37566739
http://dx.doi.org/10.1093/gbe/evad149
_version_ 1785094251869110272
author Stephens, Timothy G
Strand, Emma L
Putnam, Hollie M
Bhattacharya, Debashish
author_facet Stephens, Timothy G
Strand, Emma L
Putnam, Hollie M
Bhattacharya, Debashish
author_sort Stephens, Timothy G
collection PubMed
description Standing genetic variation is a major driver of fitness and resilience and therefore of fundamental importance for threatened species such as stony corals. We analyzed RNA-seq data generated from 132 Montipora capitata and 119 Pocillopora acuta coral colonies collected from Kāneʻohe Bay, Oʻahu, Hawaiʻi. Our goals were to determine the extent of colony genetic variation and to study reproductive strategies in these two sympatric species. Surprisingly, we found that 63% of the P. acuta colonies were triploid, with putative independent origins of the different triploid clades. These corals have spread primarily via asexual reproduction and are descended from a small number of genotypes, whose diploid ancestor invaded the bay. In contrast, all M. capitata colonies are diploid and outbreeding, with almost all colonies genetically distinct. Only two cases of asexual reproduction, likely via fragmentation, were identified in this species. We report two distinct strategies in sympatric coral species that inhabit the largest sheltered body of water in the main Hawaiian Islands. These data highlight divergence in reproductive behavior and genome biology, both of which contribute to coral resilience and persistence.
format Online
Article
Text
id pubmed-10445776
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher Oxford University Press
record_format MEDLINE/PubMed
spelling pubmed-104457762023-08-24 Ploidy Variation and Its Implications for Reproduction and Population Dynamics in Two Sympatric Hawaiian Coral Species Stephens, Timothy G Strand, Emma L Putnam, Hollie M Bhattacharya, Debashish Genome Biol Evol Article Standing genetic variation is a major driver of fitness and resilience and therefore of fundamental importance for threatened species such as stony corals. We analyzed RNA-seq data generated from 132 Montipora capitata and 119 Pocillopora acuta coral colonies collected from Kāneʻohe Bay, Oʻahu, Hawaiʻi. Our goals were to determine the extent of colony genetic variation and to study reproductive strategies in these two sympatric species. Surprisingly, we found that 63% of the P. acuta colonies were triploid, with putative independent origins of the different triploid clades. These corals have spread primarily via asexual reproduction and are descended from a small number of genotypes, whose diploid ancestor invaded the bay. In contrast, all M. capitata colonies are diploid and outbreeding, with almost all colonies genetically distinct. Only two cases of asexual reproduction, likely via fragmentation, were identified in this species. We report two distinct strategies in sympatric coral species that inhabit the largest sheltered body of water in the main Hawaiian Islands. These data highlight divergence in reproductive behavior and genome biology, both of which contribute to coral resilience and persistence. Oxford University Press 2023-08-11 /pmc/articles/PMC10445776/ /pubmed/37566739 http://dx.doi.org/10.1093/gbe/evad149 Text en © The Author(s) 2023. Published by Oxford University Press on behalf of Society for Molecular Biology and Evolution. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Article
Stephens, Timothy G
Strand, Emma L
Putnam, Hollie M
Bhattacharya, Debashish
Ploidy Variation and Its Implications for Reproduction and Population Dynamics in Two Sympatric Hawaiian Coral Species
title Ploidy Variation and Its Implications for Reproduction and Population Dynamics in Two Sympatric Hawaiian Coral Species
title_full Ploidy Variation and Its Implications for Reproduction and Population Dynamics in Two Sympatric Hawaiian Coral Species
title_fullStr Ploidy Variation and Its Implications for Reproduction and Population Dynamics in Two Sympatric Hawaiian Coral Species
title_full_unstemmed Ploidy Variation and Its Implications for Reproduction and Population Dynamics in Two Sympatric Hawaiian Coral Species
title_short Ploidy Variation and Its Implications for Reproduction and Population Dynamics in Two Sympatric Hawaiian Coral Species
title_sort ploidy variation and its implications for reproduction and population dynamics in two sympatric hawaiian coral species
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10445776/
https://www.ncbi.nlm.nih.gov/pubmed/37566739
http://dx.doi.org/10.1093/gbe/evad149
work_keys_str_mv AT stephenstimothyg ploidyvariationanditsimplicationsforreproductionandpopulationdynamicsintwosympatrichawaiiancoralspecies
AT strandemmal ploidyvariationanditsimplicationsforreproductionandpopulationdynamicsintwosympatrichawaiiancoralspecies
AT putnamholliem ploidyvariationanditsimplicationsforreproductionandpopulationdynamicsintwosympatrichawaiiancoralspecies
AT bhattacharyadebashish ploidyvariationanditsimplicationsforreproductionandpopulationdynamicsintwosympatrichawaiiancoralspecies