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Schmider-Martínez A, Maturana CS, Poveda Y, Rosenfeld S, López-Farrán Z, Saucède T, Poulin E, González-Wevar C. Laevilacunaria (Mollusca, Gastropoda) in the Southern Ocean: A comprehensive occurrence dataset. Biodivers Data J 2023; 11:e111982. [PMID: 38312333 PMCID: PMC10838097 DOI: 10.3897/bdj.11.e111982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 10/03/2023] [Indexed: 02/06/2024] Open
Abstract
Background The present dataset is a compilation of georeferenced occurrences of the littorinid genus Laevilacunaria Powell, 1951 (Mollusca, Gastropoda) in the Southern Ocean. Occurrence data were obtained from field expeditions (Antarctic and sub-Antarctic sampling) between 2015 and 2022, together with a review of published literature including records from 1887 to 2022. Three Laevilacunaria species have been recorded from the Southern Ocean: Laevilacunariabennetti, L.antarctica and L.pumilio. New information The present dataset includes 75 occurrences, representing the most exhaustive database of this Antarctic and sub-Antarctic littorinid genus. The publication of this data paper was funded by the Belgian Science Policy Office (BELSPO, contract n°FR/36/AN1/AntaBIS) in the Framework of EU-Lifewatch as a contribution to the SCAR Antarctic biodiversity portal (biodiversity.aq).
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Affiliation(s)
- Andreas Schmider-Martínez
- Instituto de Ciencias Marinas y Limnológicas (ICML), Facultad de Ciencias, Universidad Austral de Chile, Valdivia, ChileInstituto de Ciencias Marinas y Limnológicas (ICML), Facultad de Ciencias, Universidad Austral de ChileValdiviaChile
- Centro i-mar, Universidad de Los Lagos, Puerto Montt, ChileCentro i-mar, Universidad de Los LagosPuerto MonttChile
| | - Claudia S. Maturana
- Instituto de Biodiversidad de Ecosistemas Antárticos y Subantárticos (BASE), Santiago, ChileInstituto de Biodiversidad de Ecosistemas Antárticos y Subantárticos (BASE)SantiagoChile
- Cape Horn International Center (CHIC), Puerto Williams, ChileCape Horn International Center (CHIC)Puerto WilliamsChile
| | - Yarleth Poveda
- Universidad Austral de Chile, Valdivia, ChileUniversidad Austral de ChileValdiviaChile
| | - Sebastián Rosenfeld
- Instituto de Biodiversidad de Ecosistemas Antárticos y Subantárticos (BASE), Santiago, ChileInstituto de Biodiversidad de Ecosistemas Antárticos y Subantárticos (BASE)SantiagoChile
- Centro de Investigación Gaia‑Antártica, Universidad de Magallanes, Punta Arenas, ChileCentro de Investigación Gaia‑Antártica, Universidad de MagallanesPunta ArenasChile
| | - Zambra López-Farrán
- Centro Fondap de Investigación en Dinámica de Ecosistemas Marinos de Altas Latitudes (IDEAL), Universidad Austral de Chile, Valdivia, ChileCentro Fondap de Investigación en Dinámica de Ecosistemas Marinos de Altas Latitudes (IDEAL), Universidad Austral de ChileValdiviaChile
| | - Thomas Saucède
- Biogéoscience, UMR CNRS 6282, Université de Bourgougne 6, Dijon, FranceBiogéoscience, UMR CNRS 6282, Université de Bourgougne 6DijonFrance
| | - Elie Poulin
- Instituto de Biodiversidad de Ecosistemas Antárticos y Subantárticos (BASE), Santiago, ChileInstituto de Biodiversidad de Ecosistemas Antárticos y Subantárticos (BASE)SantiagoChile
| | - Claudio González-Wevar
- Instituto de Biodiversidad de Ecosistemas Antárticos y Subantárticos (BASE), Santiago, ChileInstituto de Biodiversidad de Ecosistemas Antárticos y Subantárticos (BASE)SantiagoChile
- Centro Fondap de Investigación en Dinámica de Ecosistemas Marinos de Altas Latitudes (IDEAL), Universidad Austral de Chile, Valdivia, ChileCentro Fondap de Investigación en Dinámica de Ecosistemas Marinos de Altas Latitudes (IDEAL), Universidad Austral de ChileValdiviaChile
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2
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Maroni PJ, Wilson NG. Multiple
Doris
“
kerguelenensis
” (Nudibranchia) species span the Antarctic Polar Front. Ecol Evol 2022; 12:e9333. [PMID: 36188511 PMCID: PMC9486823 DOI: 10.1002/ece3.9333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 08/25/2022] [Accepted: 08/30/2022] [Indexed: 11/27/2022] Open
Abstract
Despite strong historical biogeographical links between benthic faunal assemblages of the Magellan region of South America and the Antarctic Peninsula, very few studies have documented contemporary movement and gene flow in or out of the Southern Ocean, especially across the Antarctic Polar Front (APF). In fact, oceanographic barriers such as the APF and Antarctica's long geologic isolation have substantially separated the continents and facilitated the evolution of endemic marine taxa found within the Antarctic region. The Southern Ocean benthic sea slug complex, Doris “kerguelenensis,” are a group of direct‐developing, simultaneous hermaphrodites that lack a dispersive larval stage. To date, there are 59 highly divergent species known within this complex. Here, we provide evidence to show intraspecific genetic connectivity occurs across the APF for multiple species within the D. “kerguelenensis” nudibranch species complex. We addressed questions of genetic connectivity by examining the phylogeographic structure of the three best‐sampled D. “kerguelenensis” species and another three trans‐APF species using the protein coding mtDNA gene, cytochrome oxidase I. We also highlight alternative refugia uses among species with the same life history traits (i.e., benthic and direct developers) and for some species, extremely large distributions are established (e.g., circumpolarity). By improving our sampling of these nudibranchs, we gain better insight into the population structure and connectivity of the Antarctic region. This work also demonstrates how difficult it is to make generalizations across Antarctic marine species, even among ecologically‐similar, closely related species.
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Affiliation(s)
- Paige J. Maroni
- School of Biological Sciences (M092) University of Western Australia Crawley Western Australia Australia
- Western Australian Museum, Research & Collections Welshpool Western Australia Australia
| | - Nerida G. Wilson
- School of Biological Sciences (M092) University of Western Australia Crawley Western Australia Australia
- Western Australian Museum, Research & Collections Welshpool Western Australia Australia
- Securing Antarctica's Environmental Future Western Australian Museum Welshpool Western Australia Australia
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3
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Cowart DA, Schiaparelli S, Alvaro MC, Cecchetto M, Le Port AS, Jollivet D, Hourdez S. Origin, diversity, and biogeography of Antarctic scale worms (Polychaeta: Polynoidae): a wide-scale barcoding approach. Ecol Evol 2022; 12:e9093. [PMID: 35866013 PMCID: PMC9288932 DOI: 10.1002/ece3.9093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 05/06/2022] [Accepted: 05/23/2022] [Indexed: 11/14/2022] Open
Abstract
The Antarctic marine environment hosts diversified and highly endemic benthos owing to its unique geologic and climatic history. Current warming trends have increased the urgency of understanding Antarctic species history to predict how environmental changes will impact ecosystem functioning. Antarctic benthic lineages have traditionally been examined under three hypotheses: (1) high endemism and local radiation, (2) emergence of deep‐sea taxa through thermohaline circulation, and (3) species migrations across the Polar Front. In this study, we investigated which hypotheses best describe benthic invertebrate origins by examining Antarctic scale worms (Polynoidae). We amassed 691 polynoid sequences from the Southern Ocean and neighboring areas: the Kerguelen and Tierra del Fuego (South America) archipelagos, the Indian Ocean, and waters around New Zealand. We performed phylogenetic reconstructions to identify lineages across geographic regions, aided by mitochondrial markers cytochrome c oxidase subunit I (Cox1) and 16S ribosomal RNA (16S). Additionally, we produced haplotype networks at the species scale to examine genetic diversity, biogeographic separations, and past demography. The Cox1 dataset provided the most illuminating insights into the evolution of polynoids, with a total of 36 lineages identified. Eunoe sp. was present at Tierra del Fuego and Kerguelen, in favor of the latter acting as a migration crossroads. Harmothoe fuligineum, widespread around the Antarctic continent, was also present but isolated at Kerguelen, possibly resulting from historical freeze–thaw cycles. The genus Polyeunoa appears to have diversified prior to colonizing the continent, leading to the co‐occurrence of at least three cryptic species around the Southern and Indian Oceans. Analyses identified that nearly all populations are presently expanding following a bottleneck event, possibly caused by habitat reduction from the last glacial episodes. Findings support multiple origins for contemporary Antarctic polynoids, and some species investigated here provide information on ancestral scenarios of (re)colonization. First, it is apparent that species collected from the Antarctic continent are endemic, as the absence of closely related species in the Kerguelen and Tierra del Fuego datasets for most lineages argues in favor of Hypothesis 1 of local origin. Next, Eunoe sp. and H. fuligineum, however, support the possibility of Kerguelen and other sub‐Antarctic islands acting as a crossroads for larvae of some species, in support of Hypothesis 3. Finally, the genus Polyeunoa, conversely, is found at depths greater than 150 m and may have a deep origin, in line with Hypothesis 2. These “non endemic” groups, nevertheless, have a distribution that is either north or south of the Antarctic Polar Front, indicating that there is still a barrier to dispersal, even in the deep sea.
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Affiliation(s)
- Dominique A Cowart
- Department of Evolution, Ecology, and Behavior University of Illinois at Urbana - Champaign Urbana Illinois USA.,Company for Open Ocean Observations and Logging (COOOL) La Réunion France
| | - Stefano Schiaparelli
- Department of Earth, Environmental and Life Science (DiSTAV) University of Genoa Genoa Italy.,Italian National Antarctic Museum (MNA, Section of Genoa) University of Genoa Genoa Italy
| | - Maria Chiara Alvaro
- Department of Earth, Environmental and Life Science (DiSTAV) University of Genoa Genoa Italy
| | - Matteo Cecchetto
- Department of Earth, Environmental and Life Science (DiSTAV) University of Genoa Genoa Italy.,Italian National Antarctic Museum (MNA, Section of Genoa) University of Genoa Genoa Italy
| | - Anne-Sophie Le Port
- CNRS UMR 7144 'Adaptation et Diversité en Milieux Marins' (AD2M) Team 'Dynamique de la Diversité Marine' (DyDiv), Station Biologique de Roscoff Sorbonne Université Roscoff France
| | - Didier Jollivet
- CNRS UMR 7144 'Adaptation et Diversité en Milieux Marins' (AD2M) Team 'Dynamique de la Diversité Marine' (DyDiv), Station Biologique de Roscoff Sorbonne Université Roscoff France
| | - Stephane Hourdez
- CNRS UMR 7144 'Adaptation et Diversité en Milieux Marins' (AD2M) Team 'Dynamique de la Diversité Marine' (DyDiv), Station Biologique de Roscoff Sorbonne Université Roscoff France.,Laboratoire d'Ecogéochimie des Environnements Benthiques (LECOB), Observatoire Océanologique de Banyuls UMR 8222 CNRS-Sorbonne Université Banyuls-sur-mer France
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4
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Arkhipkin AI, Brickle P, Lee B, Shaw PW, McKeown NJ. Taxonomic re-appraisal for toothfish (Dissostichus: Notothenioidea) across the Antarctic Polar Front using genomic and morphological studies. JOURNAL OF FISH BIOLOGY 2022; 100:1158-1170. [PMID: 35174488 DOI: 10.1111/jfb.15013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 02/03/2022] [Accepted: 02/14/2022] [Indexed: 06/14/2023]
Abstract
The Patagonian toothfish, Dissostichus eleginoides, is one of the largest predatory fishes inhabiting Southern Ocean waters spanning the Antarctic Polar Front (APF), a prominent biogeographic boundary restricting gene flow and driving species divergence between Antarctic and sub-Antarctic waters. In the light of emerging threats to toothfish conservation and sustainability, this study investigated genetic [mtDNA sequences and genome wide nuclear single nucleotide polymorphisms (SNPs)] and morphological data to critically evaluate the taxonomic status of toothfish north (Chile and Patagonian shelf) and south (South Georgia and South Sandwich Islands) of the APF. mtDNA revealed reciprocally monophyletic lineages on either side of the APF with coalescent analysis indicating these diverged during the Pleistocene. Integration with data from other sources suggests the Chilean/Patagonian lineage is endemic. SNP analysis confirmed restricted nuclear gene flow between both groups and revealed a consensus suite of positive outlier SNPs compatible with adaptive divergence between these groups. Finally, several morphological features permit unequivocal assignment of individuals to either of the clades. Based on the genetic, phenotypic and ecological divergence, the authors propose that toothfish on either side of the APF be recognised as distinct species, with the name D. eleginoides used for toothfish occurring in South American waters north of the APF and toothfish south of the APF being classified using the new name D. australis reflecting their southern distribution.
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Affiliation(s)
| | - Paul Brickle
- South Atlantic Environmental Research Institute (SAERI), Stanley, Falkland Islands
| | - Brendon Lee
- Fisheries Department, Stanley, Falkland Islands
| | - Paul W Shaw
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth, UK
| | - Niall J McKeown
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth, UK
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5
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Segovia NI, González-Wevar CA, Naretto J, Rosenfeld S, Brickle P, Hüne M, Bernal V, Haye PA, Poulin E. The right tool for the right question: contrasting biogeographic patterns in the notothenioid fish Harpagifer spp. along the Magellan Province. Proc Biol Sci 2022; 289:20212738. [PMID: 35382596 PMCID: PMC8984805 DOI: 10.1098/rspb.2021.2738] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Molecular-based analysis has become a fundamental tool to understand the role of Quaternary glacial episodes. In the Magellan Province in southern South America, ice covering during the last glacial maximum (20 ka) radically altered the landscape/seascape, speciation rates and distribution of species. For the notothenioid fishes of the genus Harpagifer, in the area are described two nominal species. Nevertheless, this genus recently colonized South America from Antarctica, providing a short time for speciation processes. Combining DNA sequences and genotyping-by-sequencing SNPs, we evaluated the role of Quaternary glaciations over the patterns of genetic structure in Harpagifer across its distribution in the Magellan Province. DNA sequences showed low phylogeographic structure, with shared and dominant haplotypes between nominal species, suggesting a single evolutionary unit. SNPs identified contrastingly two groups in Patagonia and a third well-differentiated group in the Falkland/Malvinas Islands with limited and asymmetric gene flow. Linking the information of different markers allowed us to infer the relevance of postglacial colonization mediated by the general oceanographic circulation patterns. Contrasting rough- and fine-scale genetic patterns highlights the relevance of combined methodologies for species delimitation, which, depending on the question to be addressed, allows discrimination among phylogeographic structure, discarding incipient speciation, and contemporary spatial differentiation processes.
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Affiliation(s)
- N I Segovia
- Departamento de Ciencias Ecológicas, Instituto Milenio de Ecología y Biodiversidad (IEB), Universidad de Chile. Las Palmeras 3425, Ñuñoa, Santiago, Chile.,Departamento de Biología Marina, Facultad de Ciencias del Mar, Universidad Católica del Norte, Larrondo 1281, Coquimbo, Chile.,Instituto Milenio en Socio-ecología Costera (SECOS), Coquimbo, Chile.,Instituto Milenio Biodiversidad de Ecosistemas Antárticos y subAntárticos (MI-BASE), Valdivia, Chile
| | - C A González-Wevar
- Departamento de Ciencias Ecológicas, Instituto Milenio de Ecología y Biodiversidad (IEB), Universidad de Chile. Las Palmeras 3425, Ñuñoa, Santiago, Chile.,Instituto Milenio Biodiversidad de Ecosistemas Antárticos y subAntárticos (MI-BASE), Valdivia, Chile.,Instituto de Ciencias Marinas y Limnológicas (ICML), Facultad de Ciencias, Universidad Austral de Chile, Casilla 567, Valdivia, Chile.,Centro de Investigación en Dinámicas de Ecosistemas de Altas Latitudes (Fondap IDEAL), Universidad Austral de Chile
| | - J Naretto
- Costa Humboldt, Puerto Varas, Los Lagos, Chile
| | - S Rosenfeld
- Departamento de Ciencias Ecológicas, Instituto Milenio de Ecología y Biodiversidad (IEB), Universidad de Chile. Las Palmeras 3425, Ñuñoa, Santiago, Chile.,Laboratorio de Ecosistemas Antárticos y sub-Antárticos, Universidad de Magallanes, Chile
| | - P Brickle
- South Atlantic Environmental Research Institute (SAERI), PO Box 609, Stanley Cottage, Port Stanley, Falkland Islands, UK
| | - M Hüne
- Departamento de Ciencias Ecológicas, Instituto Milenio de Ecología y Biodiversidad (IEB), Universidad de Chile. Las Palmeras 3425, Ñuñoa, Santiago, Chile.,Centro de Investigación para la Conservación de los Ecosistemas Australes (ICEA), Punta Arenas, Chile
| | - V Bernal
- Departamento de Ciencias Ecológicas, Instituto Milenio de Ecología y Biodiversidad (IEB), Universidad de Chile. Las Palmeras 3425, Ñuñoa, Santiago, Chile.,Instituto Milenio Biodiversidad de Ecosistemas Antárticos y subAntárticos (MI-BASE), Valdivia, Chile
| | - P A Haye
- Departamento de Biología Marina, Facultad de Ciencias del Mar, Universidad Católica del Norte, Larrondo 1281, Coquimbo, Chile.,Instituto Milenio en Socio-ecología Costera (SECOS), Coquimbo, Chile
| | - E Poulin
- Departamento de Ciencias Ecológicas, Instituto Milenio de Ecología y Biodiversidad (IEB), Universidad de Chile. Las Palmeras 3425, Ñuñoa, Santiago, Chile.,Instituto Milenio Biodiversidad de Ecosistemas Antárticos y subAntárticos (MI-BASE), Valdivia, Chile
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6
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Maroni PJ, Baker BJ, Moran AL, Woods HA, Avila C, Johnstone GJ, Stark JS, Kocot KM, Lockhart S, Saucède T, Rouse GW, Wilson NG. One Antarctic slug to confuse them all: the underestimated diversity of Doris kerguelenensis. INVERTEBR SYST 2022. [DOI: 10.1071/is21073] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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