Is cryptic biodiversity a common phenomenon among Atlantic oceanic squids?
Historically, marine oceanic open environments have been considered without barriers to dispersal, and the subsequent speciation of lineages from distant areas. As a consequence, many marine pelagic marine invertebrates are considered as monotypic cosmopolitan taxa, sometimes even including divergen...
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ftnuigalway:oai:aran.library.nuigalway.ie/:10379/16621 2023-06-11T04:13:14+02:00 Is cryptic biodiversity a common phenomenon among Atlantic oceanic squids? Fernández-Álvarez, Fernando Ángel Villanueva, Roger Allcock, Louise 2021-03-22T13:59:57Z application/pdf http://hdl.handle.net/10379/16621 https://doi.org/10.3390/BDEE2021-09438 en eng MDPI 1st International Electronic Conference on Biological Diversity, Ecology and Evolution Fernández-Álvarez, Fernando Ángel, Villanueva, Roger, & Allcock, Louise. (2021). Is cryptic biodiversity a common phenomenon among Atlantic oceanic squids? Paper presented at the 1st International Electronic Conference on Biological Diversity, Ecology and Evolution, Online, 15-31 March. DOI:10.3390/BDEE2021-09438 http://hdl.handle.net/10379/16621 doi:10.3390/BDEE2021-09438 Attribution-NonCommercial-NoDerivs 3.0 Ireland https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ Atlantic oceanic squids Cephalopoda Systematics Phylogenetics DNA barcoding Conference Paper 2021 ftnuigalway https://doi.org/10.3390/BDEE2021-09438 2023-05-28T18:06:41Z Historically, marine oceanic open environments have been considered without barriers to dispersal, and the subsequent speciation of lineages from distant areas. As a consequence, many marine pelagic marine invertebrates are considered as monotypic cosmopolitan taxa, sometimes even including divergent geographic morphotypes. However, this view has been consistently challenged in the last decades by the discovery of many cryptic species complexes among pelagic marine cosmopolitan invertebrates. Despite their vast ecological importance, oceanic squids of the order Oegopsida Orbigny, 1845 and the superfamily Bathyteuthoidea Vecchione, Young and Sweeney, 2004 are seldomly molecularly tested for cryptic biodiversity covering wide areas. Here, we barcoded specimens belonging to 12 oceanic squid species sampled during several Atlantic oceanic cruises covering Atlantic waters from Brazil to Iceland, and the Mediterranean Sea. For assessing the presence of cryptic lineages, we studied the uncorrected p-distances at the intra- and interclade level and performed molecular species delimitation methods, such as the Poisson Tree Processes and the Generalized Mixed Yule Coalescent approach. Within Atlantic waters, we found cryptic biodiversity in five species: Abraliopsis morisii (Verany, 1839), Ancistrocheirus lessueuri (Orbigny 1842), Chtenopteryx sicula (Verany 1851), Galiteuthis armata Joubin, 1898 and Helicocranchia pfefferi Massy 1907. Atlantic individuals of Pterygioteuthis gemmata Chun, 1908 represent a divergent lineage of those from New Zealand. The divergence values among cryptic lineages of individuals of the same nominal species range from 2.2 to 17%, likely representing different stages of divergence since each putative speciation phenomena. In total, 50% of the tested species revealed cryptic lineages, which indicates that oceanic squid biodiversity is underestimated and it is necessary to develop more studies to assess the diversity of these animals at a global scale. non-peer-reviewed Conference Object Iceland National University of Ireland (NUI), Galway: ARAN New Zealand Joubin ENVELOPE(-64.433,-64.433,-64.783,-64.783) Proceedings of 1st International Electronic Conference on Biological Diversity, Ecology and Evolution 9438 |
institution |
Open Polar |
collection |
National University of Ireland (NUI), Galway: ARAN |
op_collection_id |
ftnuigalway |
language |
English |
topic |
Atlantic oceanic squids Cephalopoda Systematics Phylogenetics DNA barcoding |
spellingShingle |
Atlantic oceanic squids Cephalopoda Systematics Phylogenetics DNA barcoding Fernández-Álvarez, Fernando Ángel Villanueva, Roger Allcock, Louise Is cryptic biodiversity a common phenomenon among Atlantic oceanic squids? |
topic_facet |
Atlantic oceanic squids Cephalopoda Systematics Phylogenetics DNA barcoding |
description |
Historically, marine oceanic open environments have been considered without barriers to dispersal, and the subsequent speciation of lineages from distant areas. As a consequence, many marine pelagic marine invertebrates are considered as monotypic cosmopolitan taxa, sometimes even including divergent geographic morphotypes. However, this view has been consistently challenged in the last decades by the discovery of many cryptic species complexes among pelagic marine cosmopolitan invertebrates. Despite their vast ecological importance, oceanic squids of the order Oegopsida Orbigny, 1845 and the superfamily Bathyteuthoidea Vecchione, Young and Sweeney, 2004 are seldomly molecularly tested for cryptic biodiversity covering wide areas. Here, we barcoded specimens belonging to 12 oceanic squid species sampled during several Atlantic oceanic cruises covering Atlantic waters from Brazil to Iceland, and the Mediterranean Sea. For assessing the presence of cryptic lineages, we studied the uncorrected p-distances at the intra- and interclade level and performed molecular species delimitation methods, such as the Poisson Tree Processes and the Generalized Mixed Yule Coalescent approach. Within Atlantic waters, we found cryptic biodiversity in five species: Abraliopsis morisii (Verany, 1839), Ancistrocheirus lessueuri (Orbigny 1842), Chtenopteryx sicula (Verany 1851), Galiteuthis armata Joubin, 1898 and Helicocranchia pfefferi Massy 1907. Atlantic individuals of Pterygioteuthis gemmata Chun, 1908 represent a divergent lineage of those from New Zealand. The divergence values among cryptic lineages of individuals of the same nominal species range from 2.2 to 17%, likely representing different stages of divergence since each putative speciation phenomena. In total, 50% of the tested species revealed cryptic lineages, which indicates that oceanic squid biodiversity is underestimated and it is necessary to develop more studies to assess the diversity of these animals at a global scale. non-peer-reviewed |
format |
Conference Object |
author |
Fernández-Álvarez, Fernando Ángel Villanueva, Roger Allcock, Louise |
author_facet |
Fernández-Álvarez, Fernando Ángel Villanueva, Roger Allcock, Louise |
author_sort |
Fernández-Álvarez, Fernando Ángel |
title |
Is cryptic biodiversity a common phenomenon among Atlantic oceanic squids? |
title_short |
Is cryptic biodiversity a common phenomenon among Atlantic oceanic squids? |
title_full |
Is cryptic biodiversity a common phenomenon among Atlantic oceanic squids? |
title_fullStr |
Is cryptic biodiversity a common phenomenon among Atlantic oceanic squids? |
title_full_unstemmed |
Is cryptic biodiversity a common phenomenon among Atlantic oceanic squids? |
title_sort |
is cryptic biodiversity a common phenomenon among atlantic oceanic squids? |
publisher |
MDPI |
publishDate |
2021 |
url |
http://hdl.handle.net/10379/16621 https://doi.org/10.3390/BDEE2021-09438 |
long_lat |
ENVELOPE(-64.433,-64.433,-64.783,-64.783) |
geographic |
New Zealand Joubin |
geographic_facet |
New Zealand Joubin |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
1st International Electronic Conference on Biological Diversity, Ecology and Evolution Fernández-Álvarez, Fernando Ángel, Villanueva, Roger, & Allcock, Louise. (2021). Is cryptic biodiversity a common phenomenon among Atlantic oceanic squids? Paper presented at the 1st International Electronic Conference on Biological Diversity, Ecology and Evolution, Online, 15-31 March. DOI:10.3390/BDEE2021-09438 http://hdl.handle.net/10379/16621 doi:10.3390/BDEE2021-09438 |
op_rights |
Attribution-NonCommercial-NoDerivs 3.0 Ireland https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ |
op_doi |
https://doi.org/10.3390/BDEE2021-09438 |
container_title |
Proceedings of 1st International Electronic Conference on Biological Diversity, Ecology and Evolution |
container_start_page |
9438 |
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1768389998089863168 |