Conquered from the deep sea? A new deep-sea isopod species from the Antarctic shelf shows pattern of recent colonization.

The Amundsen Sea, Antarctica, is amongst the most rapidly changing environments of the world. Its benthic inhabitants are barely known and the BIOPEARL 2 project was one of the first to biologically explore this region. Collected during this expedition, Macrostylis roaldi sp. nov. is described as th...

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Autores principales:	Torben Riehl, Stefanie Kaiser
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5dee1b9232134958bcbcc4fe8e7b40c6
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spelling	oai:doaj.org-article:5dee1b9232134958bcbcc4fe8e7b40c62021-11-18T08:09:29ZConquered from the deep sea? A new deep-sea isopod species from the Antarctic shelf shows pattern of recent colonization.1932-620310.1371/journal.pone.0049354https://doaj.org/article/5dee1b9232134958bcbcc4fe8e7b40c62012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23145160/?tool=EBIhttps://doaj.org/toc/1932-6203The Amundsen Sea, Antarctica, is amongst the most rapidly changing environments of the world. Its benthic inhabitants are barely known and the BIOPEARL 2 project was one of the first to biologically explore this region. Collected during this expedition, Macrostylis roaldi sp. nov. is described as the first isopod discovered on the Amundsen-Sea shelf. Amongst many characteristic features, the most obvious characters unique for M. roaldi are the rather short pleotelson and short operculum as well as the trapezoid shape of the pleotelson in adult males. We used DNA barcodes (COI) and additional mitochondrial markers (12S, 16S) to reciprocally illuminate morphological results and nucleotide variability. In contrast to many other deep-sea isopods, this species is common and shows a wide distribution. Its range spreads from Pine Island Bay at inner shelf right to the shelf break and across 1,000 m bathymetrically. Its gene pool is homogenized across space and depth. This is indicative for a genetic bottleneck or a recent colonization history. Our results suggest further that migratory or dispersal capabilities of some species of brooding macrobenthos have been underestimated. This might be relevant for the species' potential to cope with effects of climate change. To determine where this species could have survived the last glacial period, alternative refuge possibilities are discussed.Torben RiehlStefanie KaiserStefanie KaiserPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 11, p e49354 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Torben Riehl Stefanie Kaiser Stefanie Kaiser Conquered from the deep sea? A new deep-sea isopod species from the Antarctic shelf shows pattern of recent colonization.
description	The Amundsen Sea, Antarctica, is amongst the most rapidly changing environments of the world. Its benthic inhabitants are barely known and the BIOPEARL 2 project was one of the first to biologically explore this region. Collected during this expedition, Macrostylis roaldi sp. nov. is described as the first isopod discovered on the Amundsen-Sea shelf. Amongst many characteristic features, the most obvious characters unique for M. roaldi are the rather short pleotelson and short operculum as well as the trapezoid shape of the pleotelson in adult males. We used DNA barcodes (COI) and additional mitochondrial markers (12S, 16S) to reciprocally illuminate morphological results and nucleotide variability. In contrast to many other deep-sea isopods, this species is common and shows a wide distribution. Its range spreads from Pine Island Bay at inner shelf right to the shelf break and across 1,000 m bathymetrically. Its gene pool is homogenized across space and depth. This is indicative for a genetic bottleneck or a recent colonization history. Our results suggest further that migratory or dispersal capabilities of some species of brooding macrobenthos have been underestimated. This might be relevant for the species' potential to cope with effects of climate change. To determine where this species could have survived the last glacial period, alternative refuge possibilities are discussed.
format	article
author	Torben Riehl Stefanie Kaiser Stefanie Kaiser
author_facet	Torben Riehl Stefanie Kaiser Stefanie Kaiser
author_sort	Torben Riehl
title	Conquered from the deep sea? A new deep-sea isopod species from the Antarctic shelf shows pattern of recent colonization.
title_short	Conquered from the deep sea? A new deep-sea isopod species from the Antarctic shelf shows pattern of recent colonization.
title_full	Conquered from the deep sea? A new deep-sea isopod species from the Antarctic shelf shows pattern of recent colonization.
title_fullStr	Conquered from the deep sea? A new deep-sea isopod species from the Antarctic shelf shows pattern of recent colonization.
title_full_unstemmed	Conquered from the deep sea? A new deep-sea isopod species from the Antarctic shelf shows pattern of recent colonization.
title_sort	conquered from the deep sea? a new deep-sea isopod species from the antarctic shelf shows pattern of recent colonization.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/5dee1b9232134958bcbcc4fe8e7b40c6
work_keys_str_mv	AT torbenriehl conqueredfromthedeepseaanewdeepseaisopodspeciesfromtheantarcticshelfshowspatternofrecentcolonization AT stefaniekaiser conqueredfromthedeepseaanewdeepseaisopodspeciesfromtheantarcticshelfshowspatternofrecentcolonization AT stefaniekaiser conqueredfromthedeepseaanewdeepseaisopodspeciesfromtheantarcticshelfshowspatternofrecentcolonization
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Conquered from the deep sea? A new deep-sea isopod species from the Antarctic shelf shows pattern of recent colonization.

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