A case of nascent speciation: unique polymorphism of gonophores within hydrozoan Sarsia lovenii
Revealing the mechanisms of life cycle changes is critical for understanding the processes driving hydrozoan evolution. Our analysis of mitochondrial (COI, 16S) and nuclear (ITS1 and ITS2) gene fragments resulted in the discovery of unique polymorphism in the life cycle of Sarsia lovenii from the Wh...
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ftpubmed:oai:pubmedcentral.nih.gov:6820802 2023-05-15T18:43:45+02:00 A case of nascent speciation: unique polymorphism of gonophores within hydrozoan Sarsia lovenii Prudkovsky, Andrey A. Ekimova, Irina A. Neretina, Tatiana V. 2019-10-29 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6820802/ http://www.ncbi.nlm.nih.gov/pubmed/31664107 https://doi.org/10.1038/s41598-019-52026-7 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6820802/ http://www.ncbi.nlm.nih.gov/pubmed/31664107 http://dx.doi.org/10.1038/s41598-019-52026-7 © The Author(s) 2019 Open Access This 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Article Text 2019 ftpubmed https://doi.org/10.1038/s41598-019-52026-7 2019-11-10T01:24:59Z Revealing the mechanisms of life cycle changes is critical for understanding the processes driving hydrozoan evolution. Our analysis of mitochondrial (COI, 16S) and nuclear (ITS1 and ITS2) gene fragments resulted in the discovery of unique polymorphism in the life cycle of Sarsia lovenii from the White Sea. This polymorphic species exhibits two types of gonophores: hydroids produce both free-swimming medusae and attached medusoids (phenotypic polymorphism). Our phylogenetic analysis revealed the intrinsic genetic structure of S. lovenii (genetic polymorphism). Two haplogroups inhabiting the White Sea differ in their reproductive modes. Haplogroup 1 produces attached medusoids, and haplogroup 2 produces free-swimming medusae. Our experiments indicated the possibility of free interbreeding between haplogroups that likely is a rare event in the sea. We propose that inter-haplogroup crossing of S. lovenii in the White Sea may be limited by discordance in periods of spawning or by spatial differences in habitat of spawning specimens. Our finding can be interpreted as a case of nascent speciation that illustrates the patterns of repeated medusa loss in hydrozoan evolution. Life cycle traits of S. lovenii may be useful for elucidating the molecular mechanisms of medusa reduction in hydrozoans. Text White Sea PubMed Central (PMC) Medusa ENVELOPE(157.417,157.417,-79.633,-79.633) White Sea Scientific Reports 9 1 |
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Article Prudkovsky, Andrey A. Ekimova, Irina A. Neretina, Tatiana V. A case of nascent speciation: unique polymorphism of gonophores within hydrozoan Sarsia lovenii |
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Article |
description |
Revealing the mechanisms of life cycle changes is critical for understanding the processes driving hydrozoan evolution. Our analysis of mitochondrial (COI, 16S) and nuclear (ITS1 and ITS2) gene fragments resulted in the discovery of unique polymorphism in the life cycle of Sarsia lovenii from the White Sea. This polymorphic species exhibits two types of gonophores: hydroids produce both free-swimming medusae and attached medusoids (phenotypic polymorphism). Our phylogenetic analysis revealed the intrinsic genetic structure of S. lovenii (genetic polymorphism). Two haplogroups inhabiting the White Sea differ in their reproductive modes. Haplogroup 1 produces attached medusoids, and haplogroup 2 produces free-swimming medusae. Our experiments indicated the possibility of free interbreeding between haplogroups that likely is a rare event in the sea. We propose that inter-haplogroup crossing of S. lovenii in the White Sea may be limited by discordance in periods of spawning or by spatial differences in habitat of spawning specimens. Our finding can be interpreted as a case of nascent speciation that illustrates the patterns of repeated medusa loss in hydrozoan evolution. Life cycle traits of S. lovenii may be useful for elucidating the molecular mechanisms of medusa reduction in hydrozoans. |
format |
Text |
author |
Prudkovsky, Andrey A. Ekimova, Irina A. Neretina, Tatiana V. |
author_facet |
Prudkovsky, Andrey A. Ekimova, Irina A. Neretina, Tatiana V. |
author_sort |
Prudkovsky, Andrey A. |
title |
A case of nascent speciation: unique polymorphism of gonophores within hydrozoan Sarsia lovenii |
title_short |
A case of nascent speciation: unique polymorphism of gonophores within hydrozoan Sarsia lovenii |
title_full |
A case of nascent speciation: unique polymorphism of gonophores within hydrozoan Sarsia lovenii |
title_fullStr |
A case of nascent speciation: unique polymorphism of gonophores within hydrozoan Sarsia lovenii |
title_full_unstemmed |
A case of nascent speciation: unique polymorphism of gonophores within hydrozoan Sarsia lovenii |
title_sort |
case of nascent speciation: unique polymorphism of gonophores within hydrozoan sarsia lovenii |
publisher |
Nature Publishing Group UK |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6820802/ http://www.ncbi.nlm.nih.gov/pubmed/31664107 https://doi.org/10.1038/s41598-019-52026-7 |
long_lat |
ENVELOPE(157.417,157.417,-79.633,-79.633) |
geographic |
Medusa White Sea |
geographic_facet |
Medusa White Sea |
genre |
White Sea |
genre_facet |
White Sea |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6820802/ http://www.ncbi.nlm.nih.gov/pubmed/31664107 http://dx.doi.org/10.1038/s41598-019-52026-7 |
op_rights |
© The Author(s) 2019 Open Access This 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/. |
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CC-BY |
op_doi |
https://doi.org/10.1038/s41598-019-52026-7 |
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Scientific Reports |
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