Unexpected biodiversity of epizoic gastropod genus Marseniopsis (Velutinidae) within a phylogenetic framework for the family
Marseniopsis Bergh, 1886 is a genus of marine gastropods (Velutinidae) which includes nine described species, eight of which endemic to Antarctica. This genus is characterized by a peculiar planktotrophic larva, the “limacosphaera”, with a potentially long pelagic life, which is a really uncommon de...
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ftunivromairis:oai:iris.uniroma1.it:11573/854490 2024-02-04T09:55:28+01:00 Unexpected biodiversity of epizoic gastropod genus Marseniopsis (Velutinidae) within a phylogenetic framework for the family FASSIO, GIULIA OLIVERIO, Marco MODICA, MARIA VITTORIA Alvaro, M. C Schiaparelli, S. Fassio, Giulia Oliverio, Marco Alvaro, M. C Modica, MARIA VITTORIA Schiaparelli, S. 2015 STAMPA http://hdl.handle.net/11573/854490 http://www.evoluzione2015.net/userfiles/CMS_Pagina/files/Abstract_eBook_Evoluzione2015.pdf eng eng EDISES country:ITA info:eu-repo/semantics/altIdentifier/isbn/9788879598828 ispartofbook:Evoluzione 2015 - Conference Program Evoluzione 2015 - VI congress of the Italian Society for Evolutionary Biology volume:1 firstpage:25 lastpage:25 numberofpages:1 http://hdl.handle.net/11573/854490 http://www.evoluzione2015.net/userfiles/CMS_Pagina/files/Abstract_eBook_Evoluzione2015.pdf info:eu-repo/semantics/conferenceObject 2015 ftunivromairis 2024-01-10T18:03:25Z Marseniopsis Bergh, 1886 is a genus of marine gastropods (Velutinidae) which includes nine described species, eight of which endemic to Antarctica. This genus is characterized by a peculiar planktotrophic larva, the “limacosphaera”, with a potentially long pelagic life, which is a really uncommon developmental strategy for Antarctic gastropods. In addition, we observed several different colour patterns, within and amongst presumed conspecific samples. We produced a dataset of COI, 16S and 28S genes of 107 samples of Marseniopsis from the Ross Sea, the Dumont d'Urville Sea, the tip of the Antarctic Peninsula and the Weddell sector. Through genetic distances and Automatic Barcode Gap Discovery (ABGD) we identified 14 MOTUs, 10 of which exclusively from the Weddell Sea-Antarctic Peninsula. The isolation-by-distance analysis did not show any significant correlation between genetic and geographic distances among populations of each clade. These results suggest the presence of a hidden biodiversity of Antarctic Marseniopsis. Mantel colour turned out not to be a diagnostic character and probably due to the alimentary homochromy of Marseniopsis with ascidians. The absence of isolation-by-distance and the presence of some MOTUs in all sampling areas are congruent with the long pelagic life of the Marseniopsis larva. However, some MOTUs distribution restricted to Weddell Sea-Antarctic Peninsula lets hypothesize the existence of a second type of larva, with a limited dispersion capacity. We also produce a preliminary phylogenetic reconstruction of this family, as a starting point to extend our investigation to the Velutinidae worldwide. Conference Object Antarc* Antarctic Antarctic Peninsula Antarctica D'Urville Sea Dumont D'Urville Sea Ross Sea Weddell Sea Sapienza Università di Roma: CINECA IRIS Antarctic The Antarctic Antarctic Peninsula Weddell Sea Ross Sea Weddell Dumont d'Urville ENVELOPE(140.017,140.017,-66.667,-66.667) Dumont-d'Urville ENVELOPE(140.013,140.013,-66.667,-66.667) D'Urville Sea ENVELOPE(140.000,140.000,-65.000,-65.000) |
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Open Polar |
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Sapienza Università di Roma: CINECA IRIS |
op_collection_id |
ftunivromairis |
language |
English |
description |
Marseniopsis Bergh, 1886 is a genus of marine gastropods (Velutinidae) which includes nine described species, eight of which endemic to Antarctica. This genus is characterized by a peculiar planktotrophic larva, the “limacosphaera”, with a potentially long pelagic life, which is a really uncommon developmental strategy for Antarctic gastropods. In addition, we observed several different colour patterns, within and amongst presumed conspecific samples. We produced a dataset of COI, 16S and 28S genes of 107 samples of Marseniopsis from the Ross Sea, the Dumont d'Urville Sea, the tip of the Antarctic Peninsula and the Weddell sector. Through genetic distances and Automatic Barcode Gap Discovery (ABGD) we identified 14 MOTUs, 10 of which exclusively from the Weddell Sea-Antarctic Peninsula. The isolation-by-distance analysis did not show any significant correlation between genetic and geographic distances among populations of each clade. These results suggest the presence of a hidden biodiversity of Antarctic Marseniopsis. Mantel colour turned out not to be a diagnostic character and probably due to the alimentary homochromy of Marseniopsis with ascidians. The absence of isolation-by-distance and the presence of some MOTUs in all sampling areas are congruent with the long pelagic life of the Marseniopsis larva. However, some MOTUs distribution restricted to Weddell Sea-Antarctic Peninsula lets hypothesize the existence of a second type of larva, with a limited dispersion capacity. We also produce a preliminary phylogenetic reconstruction of this family, as a starting point to extend our investigation to the Velutinidae worldwide. |
author2 |
Fassio, Giulia Oliverio, Marco Alvaro, M. C Modica, MARIA VITTORIA Schiaparelli, S. |
format |
Conference Object |
author |
FASSIO, GIULIA OLIVERIO, Marco MODICA, MARIA VITTORIA Alvaro, M. C Schiaparelli, S. |
spellingShingle |
FASSIO, GIULIA OLIVERIO, Marco MODICA, MARIA VITTORIA Alvaro, M. C Schiaparelli, S. Unexpected biodiversity of epizoic gastropod genus Marseniopsis (Velutinidae) within a phylogenetic framework for the family |
author_facet |
FASSIO, GIULIA OLIVERIO, Marco MODICA, MARIA VITTORIA Alvaro, M. C Schiaparelli, S. |
author_sort |
FASSIO, GIULIA |
title |
Unexpected biodiversity of epizoic gastropod genus Marseniopsis (Velutinidae) within a phylogenetic framework for the family |
title_short |
Unexpected biodiversity of epizoic gastropod genus Marseniopsis (Velutinidae) within a phylogenetic framework for the family |
title_full |
Unexpected biodiversity of epizoic gastropod genus Marseniopsis (Velutinidae) within a phylogenetic framework for the family |
title_fullStr |
Unexpected biodiversity of epizoic gastropod genus Marseniopsis (Velutinidae) within a phylogenetic framework for the family |
title_full_unstemmed |
Unexpected biodiversity of epizoic gastropod genus Marseniopsis (Velutinidae) within a phylogenetic framework for the family |
title_sort |
unexpected biodiversity of epizoic gastropod genus marseniopsis (velutinidae) within a phylogenetic framework for the family |
publisher |
EDISES |
publishDate |
2015 |
url |
http://hdl.handle.net/11573/854490 http://www.evoluzione2015.net/userfiles/CMS_Pagina/files/Abstract_eBook_Evoluzione2015.pdf |
long_lat |
ENVELOPE(140.017,140.017,-66.667,-66.667) ENVELOPE(140.013,140.013,-66.667,-66.667) ENVELOPE(140.000,140.000,-65.000,-65.000) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Weddell Sea Ross Sea Weddell Dumont d'Urville Dumont-d'Urville D'Urville Sea |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Weddell Sea Ross Sea Weddell Dumont d'Urville Dumont-d'Urville D'Urville Sea |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica D'Urville Sea Dumont D'Urville Sea Ross Sea Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica D'Urville Sea Dumont D'Urville Sea Ross Sea Weddell Sea |
op_relation |
info:eu-repo/semantics/altIdentifier/isbn/9788879598828 ispartofbook:Evoluzione 2015 - Conference Program Evoluzione 2015 - VI congress of the Italian Society for Evolutionary Biology volume:1 firstpage:25 lastpage:25 numberofpages:1 http://hdl.handle.net/11573/854490 http://www.evoluzione2015.net/userfiles/CMS_Pagina/files/Abstract_eBook_Evoluzione2015.pdf |
_version_ |
1789959462544474112 |