Is reproductive strategy a key factor in understanding the evolutionary history of Southern Ocean Asteroidea (Echinodermata)?
Abstract Life traits such as reproductive strategy can be determining factors of species evolutionary history and explain the resulting diversity patterns. This can be investigated using phylogeographic analyses of genetic units. In this work, the genetic structure of five asteroid genera with contr...
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ftdoajarticles:oai:doaj.org/article:ab82099773244ea185719b19f411c705 2023-05-15T14:01:48+02:00 Is reproductive strategy a key factor in understanding the evolutionary history of Southern Ocean Asteroidea (Echinodermata)? Camille Moreau Bruno Danis Quentin Jossart Marc Eléaume Chester Sands Guillaume Achaz Antonio Agüera Thomas Saucède 2019-08-01T00:00:00Z https://doi.org/10.1002/ece3.5280 https://doaj.org/article/ab82099773244ea185719b19f411c705 EN eng Wiley https://doi.org/10.1002/ece3.5280 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.5280 https://doaj.org/article/ab82099773244ea185719b19f411c705 Ecology and Evolution, Vol 9, Iss 15, Pp 8465-8478 (2019) Antarctica Asteroidea bipolarity brooding Echinodermata emergence Ecology QH540-549.5 article 2019 ftdoajarticles https://doi.org/10.1002/ece3.5280 2022-12-31T05:38:01Z Abstract Life traits such as reproductive strategy can be determining factors of species evolutionary history and explain the resulting diversity patterns. This can be investigated using phylogeographic analyses of genetic units. In this work, the genetic structure of five asteroid genera with contrasting reproductive strategies (brooding: Diplasterias, Notasterias and Lysasterias versus broadcasting: Psilaster and Bathybiaster) was investigated in the Southern Ocean. Over 1,400 mtDNA cytochrome C oxidase subunit I (COI) sequences were analysed using five species delineation methods (ABGD, ASAP, mPTP, sGMYC and mGMYC), two phylogenetic reconstructions (ML and BA), and molecular clock calibrations, in order to examine the weight of reproductive strategy in the observed differences among phylogeographic patterns. We hypothesised that brooding species would show higher levels of genetic diversity and species richness along with a clearer geographic structuring than broadcasting species. In contrast, genetic diversity and species richness were not found to be significantly different between brooders and broadcasters, but broadcasters are less spatially structured than brooders supporting our initial hypothesis and suggesting more complex evolutionary histories associated to this reproductive strategy. Broadcasters' phylogeography can be explained by different scenarios including deep‐sea colonisation routes, bipolarity or cosmopolitanism, and sub‐Antarctic emergence for the genus Bathybiaster; Antarctic‐ New Zealand faunal exchanges across the Polar Front for the genus Psilaster. Brooders' phylogeography could support the previously formulated hypothesis of a past trans‐Antarctic seaway established between the Ross and the Weddell seas during the Plio‐Pleistocene. Our results also show, for the first time, that the Weddell Sea is populated by a mixed asteroid fauna originating from both the East and West Antarctic. Article in Journal/Newspaper Antarc* Antarctic Antarctica Southern Ocean Weddell Sea Directory of Open Access Journals: DOAJ Articles Antarctic Southern Ocean Weddell Sea New Zealand Weddell Ecology and Evolution 9 15 8465 8478 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Antarctica Asteroidea bipolarity brooding Echinodermata emergence Ecology QH540-549.5 |
spellingShingle |
Antarctica Asteroidea bipolarity brooding Echinodermata emergence Ecology QH540-549.5 Camille Moreau Bruno Danis Quentin Jossart Marc Eléaume Chester Sands Guillaume Achaz Antonio Agüera Thomas Saucède Is reproductive strategy a key factor in understanding the evolutionary history of Southern Ocean Asteroidea (Echinodermata)? |
topic_facet |
Antarctica Asteroidea bipolarity brooding Echinodermata emergence Ecology QH540-549.5 |
description |
Abstract Life traits such as reproductive strategy can be determining factors of species evolutionary history and explain the resulting diversity patterns. This can be investigated using phylogeographic analyses of genetic units. In this work, the genetic structure of five asteroid genera with contrasting reproductive strategies (brooding: Diplasterias, Notasterias and Lysasterias versus broadcasting: Psilaster and Bathybiaster) was investigated in the Southern Ocean. Over 1,400 mtDNA cytochrome C oxidase subunit I (COI) sequences were analysed using five species delineation methods (ABGD, ASAP, mPTP, sGMYC and mGMYC), two phylogenetic reconstructions (ML and BA), and molecular clock calibrations, in order to examine the weight of reproductive strategy in the observed differences among phylogeographic patterns. We hypothesised that brooding species would show higher levels of genetic diversity and species richness along with a clearer geographic structuring than broadcasting species. In contrast, genetic diversity and species richness were not found to be significantly different between brooders and broadcasters, but broadcasters are less spatially structured than brooders supporting our initial hypothesis and suggesting more complex evolutionary histories associated to this reproductive strategy. Broadcasters' phylogeography can be explained by different scenarios including deep‐sea colonisation routes, bipolarity or cosmopolitanism, and sub‐Antarctic emergence for the genus Bathybiaster; Antarctic‐ New Zealand faunal exchanges across the Polar Front for the genus Psilaster. Brooders' phylogeography could support the previously formulated hypothesis of a past trans‐Antarctic seaway established between the Ross and the Weddell seas during the Plio‐Pleistocene. Our results also show, for the first time, that the Weddell Sea is populated by a mixed asteroid fauna originating from both the East and West Antarctic. |
format |
Article in Journal/Newspaper |
author |
Camille Moreau Bruno Danis Quentin Jossart Marc Eléaume Chester Sands Guillaume Achaz Antonio Agüera Thomas Saucède |
author_facet |
Camille Moreau Bruno Danis Quentin Jossart Marc Eléaume Chester Sands Guillaume Achaz Antonio Agüera Thomas Saucède |
author_sort |
Camille Moreau |
title |
Is reproductive strategy a key factor in understanding the evolutionary history of Southern Ocean Asteroidea (Echinodermata)? |
title_short |
Is reproductive strategy a key factor in understanding the evolutionary history of Southern Ocean Asteroidea (Echinodermata)? |
title_full |
Is reproductive strategy a key factor in understanding the evolutionary history of Southern Ocean Asteroidea (Echinodermata)? |
title_fullStr |
Is reproductive strategy a key factor in understanding the evolutionary history of Southern Ocean Asteroidea (Echinodermata)? |
title_full_unstemmed |
Is reproductive strategy a key factor in understanding the evolutionary history of Southern Ocean Asteroidea (Echinodermata)? |
title_sort |
is reproductive strategy a key factor in understanding the evolutionary history of southern ocean asteroidea (echinodermata)? |
publisher |
Wiley |
publishDate |
2019 |
url |
https://doi.org/10.1002/ece3.5280 https://doaj.org/article/ab82099773244ea185719b19f411c705 |
geographic |
Antarctic Southern Ocean Weddell Sea New Zealand Weddell |
geographic_facet |
Antarctic Southern Ocean Weddell Sea New Zealand Weddell |
genre |
Antarc* Antarctic Antarctica Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctica Southern Ocean Weddell Sea |
op_source |
Ecology and Evolution, Vol 9, Iss 15, Pp 8465-8478 (2019) |
op_relation |
https://doi.org/10.1002/ece3.5280 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.5280 https://doaj.org/article/ab82099773244ea185719b19f411c705 |
op_doi |
https://doi.org/10.1002/ece3.5280 |
container_title |
Ecology and Evolution |
container_volume |
9 |
container_issue |
15 |
container_start_page |
8465 |
op_container_end_page |
8478 |
_version_ |
1766271837015113728 |