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Grishina DY, Schepetov DM, Antokhina TI, Malaquias MAE, Valdés Á, Ekimova IA. Panmixia and local endemism: a revision of the Eubranchus rupium species complex with a description of new species. INVERTEBR SYST 2024; 38:IS24032. [PMID: 39106334 DOI: 10.1071/is24032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Accepted: 07/09/2024] [Indexed: 08/09/2024]
Abstract
Species of the genus Eubranchus Forbes, 1838 (Mollusca: Gastropoda: Nudibranchia) are common faunistic elements of boreal benthic ecosystems, associated with hydroid communities. Recent studies have suggested that the widely distributed trans-Arctic E. rupium (Møller, 1842) constitutes a complex of at least three candidate species, but the detailed taxonomy of the complex remains unresolved. The purpose of the present paper is to conduct an integrative taxonomic study including molecular genetic methods (a phylogenetic analysis using COI , 16S rRNA and histone H3 with application of species delimitation methods) and morphological study (light and scanning electron microscopy) of E. rupium and closely related species. The specific aims of this study were to establish the species boundaries, morphological variability, and the phylogeographic structure within this group. The phylogeographic analysis included a TCS -based network analysis, an analysis of molecular variance (AMOVA), divergence time estimations, and ancestral area reconstructions. We demonstrate that specimens initially identified as E. rupium included three distinctive species: the nominal E. rupium with an amphiboreal range, the new species Eubranchus novik sp. nov. from the Sea of Japan, for which a taxonomic description is provided in this paper, and Eubranchus sp. from the northern Kuril Islands, which requires the collection and study of additional material for formal description. Our results confirm the amphiboreal distribution of E. rupium , as no geographic structure was found across Pacific, Arctic and Atlantic populations, and the results of the AMOVA analysis showed no differences between groups of samples from different geographic regions. The divergence of the 'Eubrancus rupium species complex' is estimated from the late Miocene or the Miocene-Pliocene boundary to the late Pliocene. It is hypothesised that the most probable ancestral region for the Eubranchus rupium species complex is the north-western Pacific, and the subsequent speciation likely occurred due to dispersal followed by allopatric speciation. ZooBank: urn:lsid:zoobank.org:pub:228E0C46-0BF7-4DDD-9C00-67B50E298D65.
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Affiliation(s)
| | | | - Tatiana I Antokhina
- A.N. Severtsov Institute of Ecology and Evolution, Moscow, Russian Federation
| | - Manuel António E Malaquias
- Department of Natural History, University Museum of Bergen, University of Bergen, Bergen, Norway; and Institute of Marine Sciences-OKEANOS, University of the Azores, Horta, Portugal
| | - Ángel Valdés
- Department of Biological Sciences, California State Polytechnic University, Pomona, CA, USA
| | - Irina A Ekimova
- Lomonosov Moscow State University, Moscow, Russian Federation
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Meca MA, Kongsrud JA, Kongshavn K, Alvestad T, Meißner K, Budaeva N. Diversity of Orbiniella (Orbiniidae, Annelida) in the North Atlantic and the Arctic. Zookeys 2024; 1205:51-88. [PMID: 38947165 PMCID: PMC11211660 DOI: 10.3897/zookeys.1205.120300] [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: 02/08/2024] [Accepted: 04/13/2024] [Indexed: 07/02/2024] Open
Abstract
In this work, the diversity of the genus Orbiniella in the Nordic Seas and the North Atlantic waters south of Iceland is studied based on the analyses of molecular markers (mitochondrial COI, 16S rDNA and nuclear ITS2) and morphological characters. Our results showed the presence of at least five genetic lineages in the studied material which could also be morphologically identified by their segmental annulation patterns, the number and the shape of acicular spines, and the length and the shape of pygidial lobes. The species name Orbiniellapetersenae is assigned to one of the lineages restricting its geographical and vertical distribution to the deep-sea areas north of Iceland and Jan Mayen, and three lineages are described as new species (i.e., Orbiniellagriegi Meca & Budaeva, sp. nov., Orbiniellamayhemi Meca & Budaeva, sp. nov., and Orbiniellaparapari Meca & Budaeva, sp. nov.) elevating the number of known species in the genus to 25. Three deep-sea species of Orbiniella in our study are reported only north of the Greenland-Iceland-Scotland Ridge, one deep-sea species found south of the ridge. A single shallow-water species is distributed along the ridge and on the Norwegian shelf.
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Affiliation(s)
- Miguel A. Meca
- Department of Natural History, University Museum of Bergen, University of Bergen, Bergen, NorwayUniversity of BergenBergenNorway
| | - Jon Anders Kongsrud
- Department of Natural History, University Museum of Bergen, University of Bergen, Bergen, NorwayUniversity of BergenBergenNorway
| | - Katrine Kongshavn
- Department of Natural History, University Museum of Bergen, University of Bergen, Bergen, NorwayUniversity of BergenBergenNorway
| | - Tom Alvestad
- Department of Natural History, University Museum of Bergen, University of Bergen, Bergen, NorwayUniversity of BergenBergenNorway
| | - Karin Meißner
- Senckenberg Forschungsinstitute und Naturmuseun, German Centre for Marine Biodiversity Research, Hamburg, GermanySenckenberg Forschungsinstitute und Naturmuseun, German Centre for Marine Biodiversity ResearchHamburgGermany
| | - Nataliya Budaeva
- Department of Natural History, University Museum of Bergen, University of Bergen, Bergen, NorwayUniversity of BergenBergenNorway
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Del Olmo I, Roma-Cavagliani J, Martín-Hervás MDR, Langeneck J, Cervera JL, Álvarez-Campos P. Integrative taxonomy in Syllis prolifera (Annelida, Syllidae): from a unique cosmopolitan species to a complex of pseudocryptic species. INVERTEBR SYST 2024; 38:IS24004. [PMID: 38909605 DOI: 10.1071/is24004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 05/21/2024] [Indexed: 06/25/2024]
Abstract
Syllis prolifera (Syllidae, Syllinae) is an abundant species of marine annelids commonly found in warm to temperate waters worldwide. Although morphological variability occurs among populations, S. prolifera has long been considered a cosmopolitan species, widely distributed in coastal environments, including acidified and polluted areas. However, the increasing number of cases of cryptic and pseudocryptic speciation in several polychaete families in recent years has led us to question whether S. prolifera represents a single globally distributed taxon or is a species complex. To address this question, we conducted an integrative study, combining morphological, ecological and molecular data of 52 S. prolifera specimens collected in different localities across the western Mediterranean Sea and the Gulf of Cadiz. Our phylogenetic and species delimitation analyses that included two mitochondrial DNA markers (COI and 16S rRNA ) were congruent in not considering S. prolifera a unique entity. Five distinct lineages that can also be recognised by certain morphological and ecological traits were identified from these analyses instead. Overall, our study does not support the homogeneity of S. prolifera across the Mediterranean Sea, providing a new example of pseudocrypticism in marine invertebrates.
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Affiliation(s)
- Irene Del Olmo
- Centro de Investigación en Biodiversidad y Cambio Global (CIBC-UAM), Departamento de Biología (Zoología), Facultad de Ciencias, Universidad Autónoma de Madrid, Spain
| | - Josep Roma-Cavagliani
- Departamento de Biología, Facultad de Ciencias del Mar y Ambientales, Campus de Excelencia Internacional del Mar (CEI•MAR), Universidad de Cádiz, Avenida República Saharaui, s/n, E-11510 Puerto Real, Spain
| | - María Del Rosario Martín-Hervás
- Centro de Investigación en Biodiversidad y Cambio Global (CIBC-UAM), Departamento de Biología (Zoología), Facultad de Ciencias, Universidad Autónoma de Madrid, Spain; and Departamento de Biología, Facultad de Ciencias del Mar y Ambientales, Campus de Excelencia Internacional del Mar (CEI•MAR), Universidad de Cádiz, Avenida República Saharaui, s/n, E-11510 Puerto Real, Spain
| | - Joachim Langeneck
- Consorzio Interuniversitario per le Scienze del Mare (CoNISMa), Unità Locale di Ricerca (ULR) di Lecce, c/o Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali (DiSTeBA), Palazzina A, Campus Ecotekne, strada provinciale Lecce-Monteroni, I-73100 Lecce, Italy
| | - Juan Lucas Cervera
- Departamento de Biología, Facultad de Ciencias del Mar y Ambientales, Campus de Excelencia Internacional del Mar (CEI•MAR), Universidad de Cádiz, Avenida República Saharaui, s/n, E-11510 Puerto Real, Spain; and Instituto Universitario de Investigación Marina (INMAR), CEI•MAR, Universidad de Cádiz, Avenida República Saharaui, s/n, E-11510 Puerto Real, Spain
| | - Patricia Álvarez-Campos
- Centro de Investigación en Biodiversidad y Cambio Global (CIBC-UAM), Departamento de Biología (Zoología), Facultad de Ciencias, Universidad Autónoma de Madrid, Spain
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Cahill AE, Meglécz E, Chenuil A. Scientific history, biogeography, and biological traits predict presence of cryptic or overlooked species. Biol Rev Camb Philos Soc 2024; 99:546-561. [PMID: 38049930 DOI: 10.1111/brv.13034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 11/13/2023] [Accepted: 11/15/2023] [Indexed: 12/06/2023]
Abstract
Genetic data show that many nominal species are composed of more than one biological species, and thus contain cryptic species in the broad sense (including overlooked species). When ignored, cryptic species generate confusion which, beyond biodiversity or vulnerability underestimation, blurs our understanding of ecological and evolutionary processes and may impact the soundness of decisions in conservation or medicine. However, very few hypotheses have been tested about factors that predispose a taxon to contain cryptic or overlooked species. To fill this gap, we surveyed the literature on free-living marine metazoans and built two data sets, one of 187,603 nominal species and another of 83 classes or phyla, to test several hypotheses, correcting for sequence data availability, taxon size and phylogenetic relatedness. We found a strong effect of scientific history: the probability of a taxon containing cryptic species was highest for the earliest described species and varied among time periods potentially consistently with an influence of prevailing scientific theories. The probability of cryptic species being present was also increased for species with large distribution ranges. They were more frequent in the north polar and south polar zones, contradicting previous predictions of more cryptic species in the tropics, and supporting the hypothesis that many cryptic species diverged recently. The number of cryptic species varied among classes, with an excess in hydrozoans and polychaetes, and a deficit in actinopterygians, for example, but precise class ranking was relatively sensitive to the statistical model used. For all models, biological traits, rather than phylum, appeared responsible for the variation among classes: there were fewer cryptic species than expected in classes with hard skeletons (perhaps because they provide good characters for taxonomy) and image-forming vision (in which selection against heterospecific mating may enhance morphological divergence), and more in classes with internal fertilisation. We estimate that among marine free-living metazoans, several thousand additional cryptic species complexes could be identified as more sequence data become available. The factors identified as important for marine animal cryptic species are likely important for other biomes and taxa and should aid many areas in biology that rely on accurate species identification.
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Affiliation(s)
- Abigail E Cahill
- Biology Department, Albion College, 611 East Porter St., Albion, MI, 49224, USA
| | - Emese Meglécz
- Aix Marseille Univ, Avignon Univ, CNRS, IRD, IMBE, Station Marine d'Endoume, Chemin de la Batterie des Lions, Marseille, 13007, France
| | - Anne Chenuil
- Aix Marseille Univ, Avignon Univ, CNRS, IRD, IMBE, Station Marine d'Endoume, Chemin de la Batterie des Lions, Marseille, 13007, France
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Teixeira MAL, Fourreau CJL, Sempere-Valverde J, Carvalho S. Two new records and description of a new Perinereis (Annelida, Nereididae) species for the Saudi Arabian Red Sea region. Zookeys 2024; 1196:331-354. [PMID: 38726099 PMCID: PMC11079592 DOI: 10.3897/zookeys.1196.115260] [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: 11/05/2023] [Accepted: 01/26/2024] [Indexed: 05/12/2024] Open
Abstract
Annelid biodiversity studies in the Red Sea are limited and integrative taxonomy is needed to accurately improve reference libraries in the region. As part of the bioblitz effort in Saudi Arabia to assess the invertebrate biodiversity in the northern Red Sea and Gulf of Aqaba, Perinereis specimens from intertidal marine and lagoon-like rocky environments were selected for an independent assessment, given the known taxonomic ambiguities in this genus. This study used an integrative approach, combining molecular with morphological and geographic data. Our results demonstrate that specimens found mainly in the Gulf of Aqaba are not only morphologically different from other five similar Perinereis Group I species reported in the region, but phylogenetic analysis using available COI sequences from GenBank revealed different molecular operational taxonomic units, suggesting an undescribed species, P.kaustianasp. nov. The new species is genetically close and shares a similar paragnath pattern to the Indo-Pacific distributed P.helleri, in particular in Area III and Areas VII-VIII. Therefore, we suggest it may belong to the same species complex. However, P.kaustianasp. nov. differs from the latter mainly in the shorter length of the postero-dorsal tentacular cirri, median parapodia with much longer dorsal Tentacular cirri, posteriormost parapodia with much wider and greatly expanded dorsal ligules. Additionally, two new records are reported for the Saudi Neom area belonging to P.damietta and P.suezensis, previously described only for the Egyptian coast (Suez Canal) and are distributed sympatrically with the new species, but apparently not sympatric with each other.
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Affiliation(s)
- Marcos A. L. Teixeira
- Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Chloé Julie Loïs Fourreau
- Molecular Invertebrate Systematics and Ecology (MISE) Lab, Graduate School of Engineering and Science, University of the Ryukyus, Nishihara, Okinawa, Japan
| | - Juan Sempere-Valverde
- Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
- Laboratorio de Biología Marina/Estación de Biología Marina del Estrecho (Ceuta), Departamento de Zoología, Facultad de Biología, Universidad de Sevilla, Avda. Reina Mercedes s/n, 41012, Sevilla, Spain
| | - Susana Carvalho
- Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
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Budaeva N, Agne S, Ribeiro PA, Straube N, Preick M, Hofreiter M. Wide-spread dispersal in a deep-sea brooding polychaete: the role of natural history collections in assessing the distribution in quill worms (Onuphidae, Annelida). Front Zool 2024; 21:1. [PMID: 38233869 PMCID: PMC10795374 DOI: 10.1186/s12983-023-00520-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 12/21/2023] [Indexed: 01/19/2024] Open
Abstract
BACKGROUND Modern integrative taxonomy-based annelid species descriptions are detailed combining morphological data and, since the last decades, also molecular information. Historic species descriptions are often comparatively brief lacking such detail. Adoptions of species names from western literature in the past led to the assumption of cosmopolitan ranges for many species, which, in many cases, were later found to include cryptic or pseudocryptic lineages with subtle morphological differences. Natural history collections and databases can aid in assessing the geographic ranges of species but depend on correct species identification. Obtaining DNA sequence information from wet-collection museum specimens of marine annelids is often impeded by the use of formaldehyde and/or long-term storage in ethanol resulting in DNA degradation and cross-linking. RESULTS The application of ancient DNA extraction methodology in combination with single-stranded DNA library preparation and target gene capture resulted in successful sequencing of a 110-year-old collection specimen of quill worms. Furthermore, a 40-year-old specimen of quill worms was successfully sequenced using a standard extraction protocol for modern samples, PCR and Sanger sequencing. Our study presents the first molecular analysis of Hyalinoecia species including the previously known species Hyalinoecia robusta, H. tubicloa, H. artifex, and H. longibranchiata, and a potentially undescribed species from equatorial western Africa morphologically indistinguishable from H. tubicola. The study also investigates the distribution of these five Hyalinoecia species. Reassessing the distribution of H. robusta reveals a geographical range covering both the Atlantic and the Indian Oceans as indicated by molecular data obtained from recent and historical specimens. CONCLUSION Our results represent an example of a very wide geographical distribution of a brooding deep-sea annelid with a complex reproduction strategy and seemingly very limited dispersal capacity of its offspring, and highlights the importance of molecular information from museum specimens for integrative annelid taxonomy and biogeography.
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Affiliation(s)
- Nataliya Budaeva
- Department of Natural History, University Museum of Bergen, University of Bergen, Allégaten 41, 5007, Bergen, Norway.
| | - Stefanie Agne
- Evolutionary Adaptive Genomics, Department of Mathematics and Natural Sciences, Institute for Biochemistry and Biology, University of Potsdam, Potsdam, Germany
| | - Pedro A Ribeiro
- Department of Biological Sciences and Centre for Deep-Sea Research, University of Bergen, Thormøhlens Gate 53B, 5006, Bergen, Norway
| | - Nicolas Straube
- Department of Natural History, University Museum of Bergen, University of Bergen, Allégaten 41, 5007, Bergen, Norway
| | - Michaela Preick
- Evolutionary Adaptive Genomics, Department of Mathematics and Natural Sciences, Institute for Biochemistry and Biology, University of Potsdam, Potsdam, Germany
| | - Michael Hofreiter
- Evolutionary Adaptive Genomics, Department of Mathematics and Natural Sciences, Institute for Biochemistry and Biology, University of Potsdam, Potsdam, Germany
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Kudryavtseva AA, Novoyatlova US, Chuyko A, Gaeva DR, Vlasov AV, Manukhov IV. Disjunct habitat of cryptic Terebellides (Annelida, Trichobranchidae) species shows a phylogenetic link between polychaetes from the White and the North Seas. Sci Rep 2023; 13:22926. [PMID: 38129466 PMCID: PMC10739723 DOI: 10.1038/s41598-023-49785-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 12/12/2023] [Indexed: 12/23/2023] Open
Abstract
Understanding the distribution and biodiversity of marine species is crucial for developing effective conservation strategies and maintaining the health of global ecosystems. Advancements in molecular data utilization have significantly improved our understanding of biodiversity within the genus Terebellides. In this study, we conducted a phylogenetic analysis on polychaete samples from the Kandalaksha Bay, White Sea, revealing their affiliation with a putative undescribed species of the genus Terebellides found in two locations of the North Sea. Interestingly, this species was not detected in the Norwegian and Barents Seas, leading us to propose a disjunct distribution scenario for this Terebellides species. This unique distribution pattern might be attributed to the succession of polychaetes by new species, facilitated by the Gulf Stream and a climate change role in driving shifts in species' ranges and altering marine ecosystem dynamics.
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Affiliation(s)
- A A Kudryavtseva
- Moscow Institute of Physics and Technology, 141701, Dolgoprudny, Russia
- Laboratory of Microbiology, BIOTECH University, 125080, Moscow, Russia
| | - U S Novoyatlova
- Moscow Institute of Physics and Technology, 141701, Dolgoprudny, Russia
- Laboratory of Microbiology, BIOTECH University, 125080, Moscow, Russia
| | - A Chuyko
- Moscow Institute of Physics and Technology, 141701, Dolgoprudny, Russia
| | - D R Gaeva
- Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia
| | - A V Vlasov
- Moscow Institute of Physics and Technology, 141701, Dolgoprudny, Russia
- Laboratory of Microbiology, BIOTECH University, 125080, Moscow, Russia
- Joint Institute for Nuclear Research, 141980, Dubna, Russia
| | - I V Manukhov
- Moscow Institute of Physics and Technology, 141701, Dolgoprudny, Russia.
- Laboratory of Microbiology, BIOTECH University, 125080, Moscow, Russia.
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Archidona-Yuste A, Palomares-Rius JE, Clavero-Camacho I, Cantalapiedra-Navarrete C, Liébanas G, Castillo P. A Blind-Identification Test on Criconema annuliferum (de Man, 1921) Micoletzky, 1925 Species Complex Corroborate the Hyper-Cryptic Species Diversity Using Integrative Taxonomy. PLANTS (BASEL, SWITZERLAND) 2023; 12:1044. [PMID: 36903905 PMCID: PMC10005498 DOI: 10.3390/plants12051044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/21/2023] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
Ring nematodes are obligate ectoparasites on crops and natural herbaceous and woody plants, and some species are of economic importance and cause damage to roots of several crops. Recent integrative taxonomical analyses recognized the existence of two cryptic species within the Criconema annuliferum morphotype in Spain. In this study, we corroborated that morphometric, morphological and a multi-locus analysis (including the ribosomal markers D2-D3 expansion segments of 28S rRNA, ITS rRNA, 18S RNA, and the mitochondrial DNA cytochrome oxidase I gene) identified a new lineage clearly separated from C. annuliferum, C. paraannuliferum and C. plesioannuliferum. The new lineage was described herein as Criconema pseudoannuliferum sp. nov., confirming that C. annuliferum species complex species complex comprises a hyper-cryptic species complex. This research analysed soil samples from the rhizosphere of maritime pine (Pinus pinaster Ait.) forests in Bermeja-Crestellina Mountain, located at the western part of Málaga province, southern Spain. The integrative taxonomical analyses revealed the occurrence of a new cryptic species identified using females, males and juveniles with detailed morphology, morphometry and molecular markers, described herein as Criconema pseudoannuliferum sp. nov. All molecular markers (D2-D3, ITS, 18S and COI) were obtained from the same individual that was also used for morphological and morphometric analyses. This research demonstrated the hidden diversity within the C. annuliferum species complex species complex can reach to four lineages under ribosomal and mitochondrial gene markers for one morphospecies group, which includes four species, viz. C. annuliferum, C. paraannuliferum, C. plesioannuliferum, and C. pseudoannuliferum sp. nov. Criconema pseudoannuliferum sp. nov. was detected in moderate soil density in two maritime pine forests (5 and 25 nematodes/500 cm3 of soil) suggesting that does not cause damage to maritime pine.
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Affiliation(s)
- Antonio Archidona-Yuste
- Institute for Sustainable Agriculture (IAS), Spanish National Research Council (CSIC), Avenida Menéndez Pidal s/n, Campus de Excelencia Internacional Agroalimentario, ceiA3, 14004 Córdoba, Spain
| | - Juan Emilio Palomares-Rius
- Institute for Sustainable Agriculture (IAS), Spanish National Research Council (CSIC), Avenida Menéndez Pidal s/n, Campus de Excelencia Internacional Agroalimentario, ceiA3, 14004 Córdoba, Spain
| | - Ilenia Clavero-Camacho
- Institute for Sustainable Agriculture (IAS), Spanish National Research Council (CSIC), Avenida Menéndez Pidal s/n, Campus de Excelencia Internacional Agroalimentario, ceiA3, 14004 Córdoba, Spain
| | - Carolina Cantalapiedra-Navarrete
- Institute for Sustainable Agriculture (IAS), Spanish National Research Council (CSIC), Avenida Menéndez Pidal s/n, Campus de Excelencia Internacional Agroalimentario, ceiA3, 14004 Córdoba, Spain
| | - Gracia Liébanas
- Department of Animal Biology, Plant Biology and Ecology, University of Jaén, Campus ‘Las Lagunillas’ s/n, Edificio B3, 23071 Jaén, Spain
| | - Pablo Castillo
- Institute for Sustainable Agriculture (IAS), Spanish National Research Council (CSIC), Avenida Menéndez Pidal s/n, Campus de Excelencia Internacional Agroalimentario, ceiA3, 14004 Córdoba, Spain
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Sobczyk R, Serigstad B, Pabis K. High polychaete diversity in the Gulf of Guinea (West African continental margin): The influence of local and intermediate scale ecological factors on a background of regional patterns. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 859:160046. [PMID: 36356769 DOI: 10.1016/j.scitotenv.2022.160046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 11/03/2022] [Accepted: 11/04/2022] [Indexed: 06/16/2023]
Abstract
The Tropical East Atlantic is one of the least studied areas in the world's oceans, and thus a blank spot on the map of marine studies. Shaped by dynamic currents and shifting water masses, it is a key region in discussions about marine ecology, biodiversity, and zoogeography, while facing numerous, poorly understood, and unmonitored threats associated with climate change, acidification, and pollution. Polychaete diversity was assessed along four transects along the Ghana coast, from shallow to deep bottoms and distributed along the whole upwelling marine ecoregion. Despite high sampling effort, steep species accumulation curves demonstrated the necessity of further sampling in the region. We observed zonation of fauna by depth, and a decrease in species richness from 25 m to 1000 m depth. Polychaete communities were influenced by sediment type, presence of oxygen minimum zones, and local disturbances caused by elevated barium concentrations. Similar evenness along the depth gradient reflected the importance of rare species in the community structure. Differences in phylogenetic diversity, as reflected by taxonomic distinctness, were small, which suggested high ecosystem stability. The highly variable species richness at small scale (meters) showed the importance of ecological factors giving rise to microhabitat diversity, although we also noticed intermediate scale (50-300 km) differences affecting community structure. About 44 % of the species were rare (i.e. recorded only in three or fewer samples), highlighting the level of patchiness, while one fifth was distributed on all transects, therefore along the whole upwelling ecoregion, demonstrating the influence of the regional species pool on local communities at particular stations. Our study yielded 253 species, increasing the number of polychaetes known from this region by at least 50 %. This casts doubt on previous findings regarding Atlantic bioregionalization, biodiversity estimates and endemism, which appear to have been more pronouncedly affected by sampling bias than previously thought.
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Affiliation(s)
- Robert Sobczyk
- Department of Invertebrates Zoology and Hydrobiology, University of Lodz, Lodz, Poland.
| | - Bjorn Serigstad
- Center for Development Cooperation in Fisheries, Institute of Marine Research, Bergen, Norway
| | - Krzysztof Pabis
- Department of Invertebrates Zoology and Hydrobiology, University of Lodz, Lodz, Poland
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Revealing the diversity of the green Eulalia (Annelida, Phyllodocidae) species complex along the European coast, with description of three new species. ORG DIVERS EVOL 2023. [DOI: 10.1007/s13127-022-00597-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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11
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Beckmann LM, Soto-Angel JJ, Hosia A, Martell L. Odd family reunion: DNA barcoding reveals unexpected relationship between three hydrozoan species. PeerJ 2023; 11:e15118. [PMID: 37065693 PMCID: PMC10100810 DOI: 10.7717/peerj.15118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 03/02/2023] [Indexed: 04/18/2023] Open
Abstract
Knowledge of life histories is crucial for understanding ecological and evolutionary processes, but for many hydrozoan species only incomplete life cycles have been described due to challenges in linking hydromedusae with their polyp stages. Using a combination of DNA barcoding, morphology, and ecological information, we describe for the first time the polyp stage of Halopsis ocellata Agassiz, 1865 and re-describe that of Mitrocomella polydiademata (Romanes, 1876). Campanulinid hydroids referable to Lafoeina tenuis Sars, 1874 and collected in the same biogeographic region as the type locality of this species are shown to be the polyp stage of these two mitrocomid hydromedusae. The nominal species L. tenuis thus is a species complex that includes the polyp stage of medusae belonging to at least two genera currently placed in a different family. Consistent morphological and ecological differences were found between the polyps linked to each of these two hydromedusae, but molecular results suggest that yet other species may have morphologically similar hydroids. Polyps morphologically identified to L. tenuis are therefore better referred to as Lafoeina tenuis-type until further associations are resolved, particularly when occurring outside of the area of distribution of H. ocellata and M. polydiademata. Molecular identification integrated with traditional taxonomy is confirmed as an effective approach to link inconspicuous stages of marine invertebrates with hitherto unknown life cycles, especially in often-overlooked taxa. Disentangling the relationships between L. tenuis, H. ocellata, and M. polydiademata lays the ground for future research aimed at resolving the taxonomy and systematics of the enigmatic families Mitrocomidae and Campanulinidae.
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Teixeira MAL, Bakken T, Vieira PE, Langeneck J, Sampieri BR, Kasapidis P, Ravara A, Nygren A, Costa FO. The curious and intricate case of the European Hediste diversicolor (Annelida, Nereididae) species complex, with description of two new species. SYST BIODIVERS 2022. [DOI: 10.1080/14772000.2022.2116124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Marcos A. L. Teixeira
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Campus de Gualtar, Braga, 4710-057, Portugal
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Campus de Gualtar, Braga, 4710-057, Portugal
| | - Torkild Bakken
- Norwegian University of Science and Technology, NTNU University Museum, Trondheim, NO-7491, Norway
| | - Pedro E. Vieira
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Campus de Gualtar, Braga, 4710-057, Portugal
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Campus de Gualtar, Braga, 4710-057, Portugal
| | - Joachim Langeneck
- Dipartimento di Biologia, Università di Pisa, via Derna 1, Pisa, I-56126, Italy
| | - Bruno R. Sampieri
- Museu de Zoologia, Instituto de Biologia, Universidade Estadual de Campinas – IB/UNICAMP, Rua Charles Darwin, Bloco N, Cidade Universitária, Campinas, SP, Brasil
| | - Panagiotis Kasapidis
- Hellenic Centre for Marine Research, Institute of Marine Biology, Biotechnology and Aquaculture, Anávyssos, Greece
| | - AscensÃO Ravara
- Centre for Environmental and Marine Studies (CESAM), Department of Biology, University of Aveiro, Campus de Santiago, Aveiro, 3810-193, Portugal
| | - Arne Nygren
- Institutionen for marina vetenskaper, Göteborgs Universitet, Tjärnö, Strömstad, Sweden
| | - Filipe O. Costa
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Campus de Gualtar, Braga, 4710-057, Portugal
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Campus de Gualtar, Braga, 4710-057, Portugal
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Assis JEDE, Souza JRBDE, Fitzhugh K, Christoffersen ML. A new species of Euclymene (Maldanidae, Annelida) from Brazil, with new combinations, and phylogenetic implications for Euclymeninae. AN ACAD BRAS CIENC 2022; 94:e20210283. [PMID: 36541974 DOI: 10.1590/0001-3765202220210283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 06/27/2021] [Indexed: 12/23/2022] Open
Abstract
Maldanids are tube-building polychaetes, known as bamboo-worms; inhabit diverse marine regions throughout the world. The subfamily Euclymeninae was proposed to include forms with anal and cephalic plates, a funnel-shaped pygidium, and a terminal anus. Euclymene, the type genus of Euclymeninae, has about 18 valid species. Euclymene vidali sp. nov. is defined and members of the species described from Northeastern Brazil. Members of this species have 23 chaetigers, and one pre-pygidial achaetous segment; nuchal grooves extend through three quarters of the cephalic plate, and there is one acicular spine with a denticulate tip. Euclymene africana, and E. watsoni, are here recognized, respectively, as Isocirrus africana comb. nov., and I. watsoni comb. nov. Three monotypic genera are invalid: Macroclymenella, Eupraxillella, and Pseudoclyemene; their species should be recognized as Clymenella stewartensis com. nov., Praxillella antarctica com. nov., and Praxillela quadrilobata com. nov., respectively. An identification key and a comparative table for all species of Euclymene are provided. A comparative table for all genera of Euclymeninae is also furnished. The paraphyletic status of Euclymene and Euclymeninae is discussed. The taxon Maldanoplaca is not code compliant and should only be regarded as an informal name.
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Affiliation(s)
- José Eriberto DE Assis
- Prefeitura Municipal de Bayeux, Departamento de Educação Básica, Rua Santa Tereza, 600, 58306-070 Bayeux, PB, Brazil
| | - José Roberto Botelho DE Souza
- Universidade Federal de Pernambuco, Centro de Biociências, Departamento de Zoologia, Av. Prof. Morais Rego, 1235, 50670-901 Recife, PE, Brazil
| | - Kirk Fitzhugh
- Natural History Museum of Los Angeles County, 900 Exposition Blvd, 90007 Los Angeles, California, USA
| | - Martin Lindsey Christoffersen
- Universidade Federal da Paraíba, Centro de Ciências Exatas e da Natureza, Departamento de Sistemática e Ecologia, Cidade Universitária, 58059-900 João Pessoa, PB, Brazil
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Barroso M, Moreira J, Capa M, Nygren A, Parapar J. A further step towards the characterisation of Terebellides (Annelida, Trichobranchidae) diversity in the Northeast Atlantic, with the description of a new species. Zookeys 2022; 1132:85-126. [PMID: 36760494 PMCID: PMC9836732 DOI: 10.3897/zookeys.1132.91244] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 10/23/2022] [Indexed: 11/29/2022] Open
Abstract
Several new species of genus Terebellides Sars, 1835 (Annelida, Trichobranchidae) have been recently described from the Northeast Atlantic Ocean after the detection of a large complex of species based on DNA sequence data from previous research. Some of those species (belonging to the so-called Group A) have already been described elsewhere. In this paper, we revise several Terebellides clades belonging to Groups B, C and D resulting in the identification of five nominal species: Terebellidesgracilis Malm, 1874, Terebellidesatlantis Williams, 1984, Terebellideswilliamsae Jirkov, 1989, Terebellidesirinae Gagaev, 2009, and Terebellidesshetlandica Parapar, Moreira & O'Reilly, 2016, plus one new species described here as Terebellideslavesquei sp. nov. All these species are characterised by a combination of morphological features complemented with a nucleotide diagnostic approach (specific COI nucleotides in the alignment position). Morphological characters used to discriminate between taxa refer to the branchial shape, presence/absence of ciliated papillae dorsal to thoracic notopodia and the morphology of thoracic and abdominal uncinal teeth. An updated identification key to all described species of this genus in NE Atlantic waters is also included.
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Affiliation(s)
- María Barroso
- Departamento de Bioloxía, Universidade da Coruña, A Coruña, SpainUniversidade da CoruñaA CoruñaSpain
| | - Juan Moreira
- Departamento de Biología (Zoología) & Centro de Investigación en Biodiversidad y Cambio Global (CIBC-UAM), Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid, SpainUniversidad Autónoma de MadridMadridSpain
| | - María Capa
- Departament de Biologia, Universitat de les Illes Balears, Mallorca, SpainUniversitat de les Illes BalearsMallorcaSpain
| | - Arne Nygren
- Sjöfartmuseet Akvariet, Göteborg, SwedenSjöfartmuseet AkvarietGöteborgSweden,Institutionen för marina vetenskaper, Göteborgs Universitet, Göteborg, SwedenGöteborgs UniversitetGöteborgSweden
| | - Julio Parapar
- Departamento de Bioloxía, Universidade da Coruña, A Coruña, SpainUniversidade da CoruñaA CoruñaSpain
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Teixeira MAL, Langeneck J, Vieira PE, Hernández JC, Sampieri BR, Kasapidis P, Mucciolo S, Bakken T, Ravara A, Nygren A, Costa FO. Reappraisal of the hyperdiverse. INVERTEBR SYST 2022. [DOI: 10.1071/is21084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Morphologically similar species are often overlooked but molecular techniques have been effective in signalling potential hidden diversity, boosting the documentation of unique evolutionary lineages and ecological diversity. Platynereis dumerilii and Platynereis massiliensis are part of a recognised species complex, where differences in the reproductive biology have mainly been highlighted to date. Analyses of DNA sequence data (COI, 16S rDNA and D2 region of the 28S rDNA) of populations of the apparent morphotype of P. dumerilii obtained from a broader sampling area along European marine waters, including the Azores and Webbnesia islands (Madeira and Canaries), provided compelling evidence for the existence of at least 10 divergent evolutionary lineages. Complementing the genetic data, morphological observations of the better represented lineages revealed two major groups with distinctive paragnath patterns. Two new Platynereis species were erected: P. nunezi sp. nov., widespread in the Azores and Webbnesia islands, and P. jourdei sp. nov., restricted to the western Mediterranean. The new combination P. agilis is also proposed for Nereis agilis, previously unaccepted for one of the lineages present both in the Northeast Atlantic and western Mediterranean. Platynereis dumerilii is redescribed based on topotypic material. However, uncertainty in the identity of P. massiliensis due to the original brief description and the absence of type and topotypic material prevents the unequivocal assignment to the lineage assumed in this and previous studies. The remaining five lineages are represented by only a few small specimens with morphological features poorly preserved and were therefore not described in this study. ZooBank: urn:lsid:zoobank.org:pub:50079615-85E5-447E-BDD7-21E81C2A6F4D
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Boring can get you far: shell-boring Dipolydora from Temperate Northern Pacific, with emphasis on the global history of Dipolydora giardi (Mesnil, 1893) (Annelida: Spionidae). Biol Invasions 2022. [DOI: 10.1007/s10530-022-02941-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Hektoen MM, Willassen E, Budaeva N. Phylogeny and Cryptic Diversity of Diopatra (Onuphidae, Annelida) in the East Atlantic. BIOLOGY 2022; 11:327. [PMID: 35205193 PMCID: PMC8869602 DOI: 10.3390/biology11020327] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/31/2022] [Accepted: 02/07/2022] [Indexed: 06/14/2023]
Abstract
Diopatra Audouin & Milne-Edwards, 1833 is a species rich genus that is common in tropical and subtropical regions. The genus is readily identified by its striking, spiral branchiae, but species identification has historically been challenging due to a high variation in diagnostic characters used. This study aims to reconstruct the phylogeny of Diopatra with molecular markers and assess the species diversity of West African Diopatra with the species delimitation programs bPTP and BPP. Specimens were collected from Morocco to Angola, and the markers COI, 16S and 28S were sequenced from 76 specimens. The constructed phylogeny retrieved Diopatra as monophyletic, as well as five well supported clades within the genus. All clades were defined by morphological characters, some of which have previously not been considered to have high phylogenetic or taxonomical value. Species delimitation analyses recovered 17 new species, several of which were not readily identified morphologically. One species complex comprising between one and 12 species was left unresolved due to incongruence between the species delimitation methods and challenging morphology. Our results indicate that the diversity of Diopatra is significantly underestimated, where this regional study near to doubled the number ofknown species from the East Atlantic.
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Affiliation(s)
- Martin M. Hektoen
- Department of Natural History, NTNU University Museum, Norwegian University of Science and Technology, 7491 Trondheim, Norway
- Åkerblå AS, Nordfrøyveien 413, 7260 Sistranda, Norway
| | - Endre Willassen
- Department of Natural History, University Museum of Bergen, University of Bergen, 5020 Bergen, Norway; (E.W.); (N.B.)
| | - Nataliya Budaeva
- Department of Natural History, University Museum of Bergen, University of Bergen, 5020 Bergen, Norway; (E.W.); (N.B.)
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Species delimitation and mitonuclear discordance within a species complex of biting midges. Sci Rep 2022; 12:1730. [PMID: 35110675 PMCID: PMC8810881 DOI: 10.1038/s41598-022-05856-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 01/17/2022] [Indexed: 12/11/2022] Open
Abstract
The inability to distinguish between species can be a serious problem in groups responsible for pathogen transmission. Culicoides biting midges transmit many pathogenic agents infecting wildlife and livestock. In North America, the C. variipennis species complex contains three currently recognized species, only one of which is a known vector, but limited species-specific characters have hindered vector surveillance. Here, genomic data were used to investigate population structure and genetic differentiation within this species complex. Single nucleotide polymorphism data were generated for 206 individuals originating from 17 locations throughout the United States and Canada. Clustering analyses suggest the occurrence of two additional cryptic species within this complex. All five species were significantly differentiated in both sympatry and allopatry. Evidence of hybridization was detected in three different species pairings indicating incomplete reproductive isolation. Additionally, COI sequences were used to identify the hybrid parentage of these individuals, which illuminated discordance between the divergence of the mitochondrial and nuclear datasets.
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Teixeira MAL, Vieira PE, Ravara A, Costa FO, Nygren A. From 13 to 22 in a second stroke: revisiting the European Eumida sanguinea (Phyllodocidae: Annelida) species complex. Zool J Linn Soc 2022. [DOI: 10.1093/zoolinnean/zlab100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Eumida sanguinea is a recognized polychaete species complex which, in previous studies, has been reported to have additional undescribed diversity. We detected nine additional lineages by analysing DNA sequence data (mitochondrial: COI, 16S rRNA and nuclear loci: ITS region and 28S rRNA) of E. sanguinea morphotype populations from a broader sampling effort in European marine waters. Traditional morphological features failed to provide consistent differences or unique characters that could be used to distinguish these Eumida species. However, by complementing DNA data with morphometrics, geographic range, colour and pigmentation patterns, we revealed five new species. Two of these undescribed species derived from the previously signalled Eumida lineages S21 and GB22, which are here named as E. schanderi sp. nov. and E. fenwicki sp. nov., respectively. Three other species are based on newly discovered lineages, namely E. fauchaldi sp. nov., E. langenecki sp. nov. and E. pleijeli sp. nov. From the six new lineages remaining, three are represented by fewer than two well-preserved specimens, which prevented further comprehensive analysis. The last three lineages were only distinct when using mitochondrial markers. Integrative taxonomy is essential to elucidate evolutionary phenomena and eventually allow informed use of species complexes exhibiting stasis in biomonitoring or other ecological studies.
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Affiliation(s)
- Marcos A L Teixeira
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Campus de Gualtar, Braga, Portugal
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Campus de Gualtar, Braga, Portugal
| | - Pedro E Vieira
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Campus de Gualtar, Braga, Portugal
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Campus de Gualtar, Braga, Portugal
| | - Ascensão Ravara
- Centre for Environmental and Marine Studies (CESAM), Department of Biology, University of Aveiro, Campus de Santiago, Aveiro, Portugal
| | - Filipe O Costa
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Campus de Gualtar, Braga, Portugal
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Campus de Gualtar, Braga, Portugal
| | - Arne Nygren
- Institutionen for marina vetenskaper, Göteborgs Universitet, Tjärnö, Strömstad, Sweden
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Aguado MT, Ponz-Segrelles G, Glasby CJ, Ribeiro RP, Nakamura M, Oguchi K, Omori A, Kohtsuka H, Fisher C, Ise Y, Jimi N, Miura T. Ramisyllis kingghidorahi n. sp., a new branching annelid from Japan. ORG DIVERS EVOL 2022. [DOI: 10.1007/s13127-021-00538-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AbstractAmong over 20,000 species of Annelida, only two branching species with a highly modified body-pattern are known until now: the Syllidae Syllis ramosa McIntosh, 1879, and Ramisyllis multicaudata Glasby et al. (Zoological Journal of the Linnean Society, 164, 481–497, 2012). Both have unusual ramified bodies with one head and multiple branches and live inside the canals of host sponges. Using an integrative approach (combining morphology, internal anatomy, ecology, phylogeny, genetic divergence, and the complete mitochondrial genome), we describe a new branching species from Japan, Ramisyllis kingghidorahi n. sp., inhabiting an undescribed species of Petrosia (Porifera: Demospongiae) from shallow waters. We compare the new species with its closest relative, R. multicaudata; emend the diagnosis of Ramisyllis; and discuss previous reports of S. ramosa. This study suggests a much higher diversity of branching syllids than currently known. Finally, we discuss possible explanations for the feeding behaviour in the new species in relation to its highly ciliated wall of the digestive tubes (especially at the distal branches and anus), and provide a hypothesis for the evolution of branching body patterns as the result of an adaptation to the host sponge labyrinthic canal system.
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21
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Radulovici AE, Vieira PE, Duarte S, Teixeira MAL, Borges LMS, Deagle BE, Majaneva S, Redmond N, Schultz JA, Costa FO. Revision and annotation of DNA barcode records for marine invertebrates: report of the 8th iBOL conference hackathon. METABARCODING AND METAGENOMICS 2021. [DOI: 10.3897/mbmg.5.67862] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The accuracy of specimen identification through DNA barcoding and metabarcoding relies on reference libraries containing records with reliable taxonomy and sequence quality. The considerable growth in barcode data requires stringent data curation, especially in taxonomically difficult groups such as marine invertebrates. A major effort in curating marine barcode data in the Barcode of Life Data Systems (BOLD) was undertaken during the 8th International Barcode of Life Conference (Trondheim, Norway, 2019). Major taxonomic groups (crustaceans, echinoderms, molluscs, and polychaetes) were reviewed to identify those which had disagreement between Linnaean names and Barcode Index Numbers (BINs). The records with disagreement were annotated with four tags: a) MIS-ID (misidentified, mislabeled, or contaminated records), b) AMBIG (ambiguous records unresolved with the existing data), c) COMPLEX (species names occurring in multiple BINs), and d) SHARE (barcodes shared between species). A total of 83,712 specimen records corresponding to 7,576 species were reviewed and 39% of the species were tagged (7% MIS-ID, 17% AMBIG, 14% COMPLEX, and 1% SHARE). High percentages (>50%) of AMBIG tags were recorded in gastropods, whereas COMPLEX tags dominated in crustaceans and polychaetes. The high proportion of tagged species reflects either flaws in the barcoding workflow (e.g., misidentification, cross-contamination) or taxonomic difficulties (e.g., synonyms, undescribed species). Although data curation is essential for barcode applications, such manual attempts to examine large datasets are unsustainable and automated solutions are extremely desirable.
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Mortimer K, Fitzhugh K, dos Brasil AC, Lana P. Who's who in Magelona: phylogenetic hypotheses under Magelonidae Cunningham & Ramage, 1888 (Annelida: Polychaeta). PeerJ 2021; 9:e11993. [PMID: 35070516 PMCID: PMC8759375 DOI: 10.7717/peerj.11993] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 07/27/2021] [Indexed: 11/21/2022] Open
Abstract
Known as shovel head worms, members of Magelonidae comprise a group of polychaetes readily recognised by the uniquely shaped, dorso-ventrally flattened prostomium and paired ventro-laterally inserted papillated palps. The present study is the first published account of inferences of phylogenetic hypotheses within Magelonidae. Members of 72 species of Magelona and two species of Octomagelona were included, with outgroups including members of one species of Chaetopteridae and four of Spionidae. The phylogenetic inferences were performed to causally account for 176 characters distributed among 79 subjects, and produced 2,417,600 cladograms, each with 404 steps. A formal definition of Magelonidae is provided, represented by a composite phylogenetic hypothesis explaining seven synapomorphies: shovel-shaped prostomium, prostomial ridges, absence of nuchal organs, ventral insertion of palps and their papillation, presence of a burrowing organ, and unique body regionation. Octomagelona is synonymised with Magelona due to the latter being paraphyletic relative to the former. The consequence is that Magelonidae is monotypic, such that Magelona cannot be formally defined as associated with any phylogenetic hypotheses. As such, the latter name is an empirically empty placeholder, but because of the binomial name requirement mandated by the International Code of Zoological Nomenclature, the definition is identical to that of Magelonidae. Several key features for future descriptions are suggested: prostomial dimensions, presence/absence of prostomial horns, morphology of anterior lamellae, presence/absence of specialised chaetae, and lateral abdominal pouches. Additionally, great care must be taken to fully describe and illustrate all thoracic chaetigers in descriptions.
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Affiliation(s)
- Kate Mortimer
- Natural Sciences, Amgueddfa Cymru–National Museum Wales, Cardiff, Wales, United Kingdom
| | - Kirk Fitzhugh
- Natural History Museum of Los Angeles County, Los Angeles, CA, United States of America
| | - Ana Claudia dos Brasil
- Departamento de Biologia Animal, Instituto de Ciências Biológicas e da Saúde, Universidade Federal Rural do Rio de Janeiro, Seropédica, Rio de Janeiro, Brazil
| | - Paulo Lana
- Centro de Estudos do Mar, Universidade Federal do Paraná, Pontal do Sul, Paraná, Brazil
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Sampieri BR, Vieira PE, Teixeira MAL, Seixas VC, Pagliosa PR, Amaral ACZ, Costa FO. Molecular diversity within the genus Laeonereis (Annelida, Nereididae) along the west Atlantic coast: paving the way for integrative taxonomy. PeerJ 2021; 9:e11364. [PMID: 34123584 PMCID: PMC8164838 DOI: 10.7717/peerj.11364] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 04/07/2021] [Indexed: 11/20/2022] Open
Abstract
The polychaete genus Laeonereis (Annelida, Nereididae) occurs over a broad geographic range and extends nearly across the entire Atlantic coast of America, from the USA to Uruguay. Despite the research efforts to clarify its diversity and systematics, mostly by morphological and ecological evidence, there is still uncertainty, mainly concerning the species Laeonereis culveri, which constitutes an old and notorious case of taxonomic ambiguity. Here, we revised the molecular diversity and distribution of Laeonereis species based on a multi-locus approach, including DNA sequence analyses of partial segments of the cytochrome c oxidase subunit I (COI), 16S rRNA, and 28S rRNA genes. We examined Laeonereis specimens collected from 26 sites along the American Atlantic coast from Massachusetts (USA) to Mar del Plata (Argentina). Although no comprehensive morphological examination was performed between different populations, the COI barcodes revealed seven highly divergent MOTUs, with a mean K2P genetic distance of 16.9% (from 6.8% to 21.9%), which was confirmed through four clustering algorithms. All MOTUs were geographically segregated, except for MOTUs 6 and 7 from southeastern Brazil, which presented partially overlapping ranges between Rio de Janeiro and São Paulo coast. Sequence data obtained from 16S rRNA and 28S rRNA markers supported the same MOTU delimitation and geographic segregation as those of COI, providing further evidence for the existence of seven deeply divergent lineages within the genus. The extent of genetic divergence between MOTUs observed in our study fits comfortably within the range reported for species of polychaetes, including Nereididae, thus providing a strong indication that they might constitute separate species. These results may therefore pave the way for integrative taxonomic studies, aiming to clarify the taxonomic status of the Laeonereis MOTUs herein reported.
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Affiliation(s)
- Bruno R Sampieri
- Centro de Biologia Molecular e Ambiental, Universidade do Minho, Braga, Portugal.,Museu de Zoologia, Universidade Estadual de Campinas, Campinas, São Paulo, Brazil.,Institute of Science and Innovation for Bio-Sustainability (IB-S), Universidade do Minho, Braga, Portugal
| | - Pedro E Vieira
- Centro de Biologia Molecular e Ambiental, Universidade do Minho, Braga, Portugal.,Institute of Science and Innovation for Bio-Sustainability (IB-S), Universidade do Minho, Braga, Portugal
| | - Marcos A L Teixeira
- Centro de Biologia Molecular e Ambiental, Universidade do Minho, Braga, Portugal.,Institute of Science and Innovation for Bio-Sustainability (IB-S), Universidade do Minho, Braga, Portugal
| | - Victor C Seixas
- Programa de Pós-Graduação em Ecologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Paulo R Pagliosa
- Laboratório de Biodiversidade e Conservação Marinha, Universidade Federal de Santa Catarina, Florianopólis, Santa Catarina, Brazil
| | | | - Filipe O Costa
- Centro de Biologia Molecular e Ambiental, Universidade do Minho, Braga, Portugal.,Institute of Science and Innovation for Bio-Sustainability (IB-S), Universidade do Minho, Braga, Portugal
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Grosse M, Capa M, Bakken T. Describing the hidden species diversity of Chaetozone (Annelida, Cirratulidae) in the Norwegian Sea using morphological and molecular diagnostics. Zookeys 2021; 1039:139-176. [PMID: 34113206 PMCID: PMC8163715 DOI: 10.3897/zookeys.1039.61098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 03/19/2021] [Indexed: 11/12/2022] Open
Abstract
Using molecular markers and species delimitation analyses, a high diversity of bi-tentaculate Cirratulidae was discovered from the North-East Atlantic. Five new species are described: Chaetozone pseudosetosa sp. nov., Chaetozone quinta sp. nov., Chaetozone barentsensis sp. nov., Chaetozone monteverdii sp. nov., and Chaetozone chambersae sp. nov. Several morphogroups are also described, even though the presence of cryptic diversity prevented naming of individual species. For each species presented, a molecular diagnostic is given from the universal barcode COI and, when available, the D1-D2 domains of the 28S rRNA. This increases the number of species in Chaetozone in northern European waters from ten to at least 17 species, the exact number of species remaining uncertain as taxonomic issues with older names remain unresolved.
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Affiliation(s)
- Maël Grosse
- University of the Balearic Island, Department of Biology, Ctra. Valldemossa km 7.5, Balearic Islands, Spain University of the Balearic Islands Palma Spain.,Norwegian University of Science and Technology, NTNU University Museum, Trondheim, Norway Norwegian University of Science and Technology, NTNU University Museum Trondheim Norway
| | - María Capa
- University of the Balearic Island, Department of Biology, Ctra. Valldemossa km 7.5, Balearic Islands, Spain University of the Balearic Islands Palma Spain.,Norwegian University of Science and Technology, NTNU University Museum, Trondheim, Norway Norwegian University of Science and Technology, NTNU University Museum Trondheim Norway
| | - Torkild Bakken
- Norwegian University of Science and Technology, NTNU University Museum, Trondheim, Norway Norwegian University of Science and Technology, NTNU University Museum Trondheim Norway
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Lee AL, Capa M, Dafforn KA, Hutchings PA, Murray A. New records of non-indigenous Branchiomma and Parasabella species (Sabellidae: Annelida) in South Australia highlight the continuing challenges for sabellid taxonomy. J NAT HIST 2021. [DOI: 10.1080/00222933.2020.1862334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Aria L. Lee
- Evolution and Ecology Research Centre, University of New South Wales, Kensington, Australia
- Sydney Institute of Marine Sciences, Mosman, Australia
| | - María Capa
- Department of Biology, University of the Balearic Islands, Palma, Spain
| | - Katherine A. Dafforn
- Sydney Institute of Marine Sciences, Mosman, Australia
- Department of Earth and Environmental Sciences, Macquarie University, North Ryde, Australia
| | - Pat A. Hutchings
- Department of Marine Invertebrates, Australian Museum Research Institute, Sydney, Australia
- Department of Biological Sciences, Macquarie University, North Ryde, Australia
| | - Anna Murray
- Department of Marine Invertebrates, Australian Museum Research Institute, Sydney, Australia
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Abstract
Annelida is a ubiquitous, common and diverse group of organisms, found in terrestrial, fresh waters and marine environments. Despite the large efforts put into resolving the evolutionary relationships of these and other Lophotrochozoa, and the delineation of the basal nodes within the group, these are still unanswered. Annelida holds an enormous diversity of forms and biological strategies alongside a large number of species, following Arthropoda, Mollusca, Vertebrata and perhaps Platyhelminthes, among the species most rich in phyla within Metazoa. The number of currently accepted annelid species changes rapidly when taxonomic groups are revised due to synonymies and descriptions of a new species. The group is also experiencing a recent increase in species numbers as a consequence of the use of molecular taxonomy methods, which allows the delineation of the entities within species complexes. This review aims at succinctly reviewing the state-of-the-art of annelid diversity and summarizing the main systematic revisions carried out in the group. Moreover, it should be considered as the introduction to the papers that form this Special Issue on Systematics and Biodiversity of Annelids.
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On the Diversity of Phyllodocida (Annelida: Errantia), with a Focus on Glyceridae, Goniadidae, Nephtyidae, Polynoidae, Sphaerodoridae, Syllidae, and the Holoplanktonic Families. DIVERSITY-BASEL 2021. [DOI: 10.3390/d13030131] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Phyllodocida is a clade of errantiate annelids characterized by having ventral sensory palps, anterior enlarged cirri, axial muscular proboscis, compound chaetae (if present) with a single ligament, and of lacking dorsolateral folds. Members of most families date back to the Carboniferous, although the earliest fossil was dated from the Devonian. Phyllodocida holds 27 well-established and morphologically homogenous clades ranked as families, gathering more than 4600 currently accepted nominal species. Among them, Syllidae and Polynoidae are the most specious polychaete groups. Species of Phyllodocida are mainly found in the marine benthos, although a few inhabit freshwater, terrestrial and planktonic environments, and occur from intertidal to deep waters in all oceans. In this review, we (1) explore the current knowledge on species diversity trends (based on traditional species concept and molecular data), phylogeny, ecology, and geographic distribution for the whole group, (2) try to identify the main knowledge gaps, and (3) focus on selected families: Alciopidae, Goniadidae, Glyceridae, Iospilidae, Lopadorrhynchidae, Polynoidae, Pontodoridae, Nephtyidae, Sphaerodoridae, Syllidae, Tomopteridae, Typhloscolecidae, and Yndolaciidae. The highest species richness is concentrated in European, North American, and Australian continental shelves (reflecting a strong sampling bias). While most data come from shallow coastal and surface environments most world oceans are clearly under-studied. The overall trends indicate that new descriptions are constantly added through time and that less than 10% of the known species have molecular barcode information available.
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Abstract
Terebelliformia comprises a large group of sedentary polychaetes which live from the intertidal to the deep sea. The majority live in tubes and are selective deposit feeders. This study synthesises the current knowledge of this group, including their distribution, in the different biogeographic regions. We highlight the new methodologies being used to describe them and the resolution of species complexes occurring in the group. The main aim of this review is to highlight the knowledge gaps and to stimulate research in those directions, which will allow for knowledge of their distribution and abundances to be used by ecologists and managers.
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Hutchings P. Potential loss of biodiversity and the critical importance of taxonomy-An Australian perspective. ADVANCES IN MARINE BIOLOGY 2021; 88:3-16. [PMID: 34119045 DOI: 10.1016/s0065-2881(21)00015-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Affiliation(s)
- Pat Hutchings
- Australian Museum Research Institute, Australian Museum, Sydney, NSW, Australia; Department of Biological Sciences, Macquarie University, North Ryde, NSW, Australia
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Serra V, Gammuto L, Nitla V, Castelli M, Lanzoni O, Sassera D, Bandi C, Sandeep BV, Verni F, Modeo L, Petroni G. Morphology, ultrastructure, genomics, and phylogeny of Euplotes vanleeuwenhoeki sp. nov. and its ultra-reduced endosymbiont "Candidatus Pinguicoccus supinus" sp. nov. Sci Rep 2020; 10:20311. [PMID: 33219271 PMCID: PMC7679464 DOI: 10.1038/s41598-020-76348-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 09/30/2020] [Indexed: 01/30/2023] Open
Abstract
Taxonomy is the science of defining and naming groups of biological organisms based on shared characteristics and, more recently, on evolutionary relationships. With the birth of novel genomics/bioinformatics techniques and the increasing interest in microbiome studies, a further advance of taxonomic discipline appears not only possible but highly desirable. The present work proposes a new approach to modern taxonomy, consisting in the inclusion of novel descriptors in the organism characterization: (1) the presence of associated microorganisms (e.g.: symbionts, microbiome), (2) the mitochondrial genome of the host, (3) the symbiont genome. This approach aims to provide a deeper comprehension of the evolutionary/ecological dimensions of organisms since their very first description. Particularly interesting, are those complexes formed by the host plus associated microorganisms, that in the present study we refer to as "holobionts". We illustrate this approach through the description of the ciliate Euplotes vanleeuwenhoeki sp. nov. and its bacterial endosymbiont "Candidatus Pinguicoccus supinus" gen. nov., sp. nov. The endosymbiont possesses an extremely reduced genome (~ 163 kbp); intriguingly, this suggests a high integration between host and symbiont.
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Affiliation(s)
- Valentina Serra
- Department of Biology, University of Pisa, Via Volta 4/6, 56126, Pisa, Italy
| | - Leandro Gammuto
- Department of Biology, University of Pisa, Via Volta 4/6, 56126, Pisa, Italy
| | - Venkatamahesh Nitla
- Department of Biology, University of Pisa, Via Volta 4/6, 56126, Pisa, Italy
| | - Michele Castelli
- Department of Biosciences, Romeo and Enrica Invernizzi Pediatric Research Center, University of Milan, Milan, Italy
- Department of Biology and Biotechnology "Lazzaro Spallanzani", Pavia University, Pavia, Italy
| | - Olivia Lanzoni
- Department of Biology, University of Pisa, Via Volta 4/6, 56126, Pisa, Italy
| | - Davide Sassera
- Department of Biology and Biotechnology "Lazzaro Spallanzani", Pavia University, Pavia, Italy
| | - Claudio Bandi
- Department of Biosciences, Romeo and Enrica Invernizzi Pediatric Research Center, University of Milan, Milan, Italy
| | | | - Franco Verni
- Department of Biology, University of Pisa, Via Volta 4/6, 56126, Pisa, Italy
| | - Letizia Modeo
- Department of Biology, University of Pisa, Via Volta 4/6, 56126, Pisa, Italy.
- CIME, Centro Interdipartimentale di Microscopia Elettronica, Università di Pisa, Pisa, Italy.
- CISUP, Centro per l'Integrazione della Strumentazione dell'Università di Pisa, Pisa, India.
| | - Giulio Petroni
- Department of Biology, University of Pisa, Via Volta 4/6, 56126, Pisa, Italy.
- CIME, Centro Interdipartimentale di Microscopia Elettronica, Università di Pisa, Pisa, Italy.
- CISUP, Centro per l'Integrazione della Strumentazione dell'Università di Pisa, Pisa, India.
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Parapar J, Capa M, Nygren A, Moreira J. To name but a few: descriptions of five new species of Terebellides (Annelida, Trichobranchidae) from the North East Atlantic. Zookeys 2020; 992:1-58. [PMID: 33223905 PMCID: PMC7677295 DOI: 10.3897/zookeys.992.55977] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 10/06/2020] [Indexed: 11/18/2022] Open
Abstract
The number of described species of the genus Terebellides Sars, 1835 (Annelida, Trichobranchidae) has greatly increased in the last years, particularly in the North East Atlantic. In this context, this paper deals with several putative species recently delineated by molecular means within a well delimited clade of Terebellides. Species are characterised here by a combination of morphological characters, and a complementary nucleotide diagnostic approach. Three species were identified as the nominal species T.stroemii Sars, 1835, T.bigeniculatus Parapar, Moreira & Helgason, 2011 and T.europaeaLavesque et al., 2019. Five species are described as new: T.bakkenisp. nov., T.kongsrudisp. nov., T.norvegicasp. nov., T.ronningaesp. nov. and T.scoticasp. nov. The distinctive morphological characters refer to the branchial shape, absence or presence of papillae on lamellae of anterior margin of branchial dorsal lobes, absence or presence of ciliated papillae dorsal to thoracic notopodia, geniculate chaetae in one or two chaetigers, and the morphology of thoracic and abdominal uncini teeth. Furthermore, the description of T.bigeniculatus is revised and complemented after examination of type specimens. An updated identification key to all species of the genus in NE Atlantic and a proposal of a classification of different types of abdominal uncini to be used in taxonomy are also included.
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Affiliation(s)
- Julio Parapar
- Departamento de Bioloxía, Universidade da Coruña, Spain Universidade da Coruña Coruña Spain
| | - María Capa
- Departament de Biologia, Universitat de les Illes Balears, Spain Universitat de les Illes Balears Mallorca Spain
| | - Arne Nygren
- Sjöfartmuseet Akvariet, Göteborg, Sweden and Institutionen för marina vetenskaper, Göteborgs Universitet, Sweden Göteborgs Universitet Göteborg Sweden
| | - Juan Moreira
- Departamento de Biología (Zoología) & Centro de Investigación en Biodiversidad y Cambio Global (CIBC-UAM), Facultad de Ciencias, Universidad Autónoma de Madrid, Spain Universidad Autónoma de Madrid Madrid Spain
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Radashevsky VI, Pankova VV, Malyar VV, Neretina TV, Choi JW, Yum S, Houbin C. Molecular analysis of Spiophanes bombyx complex (Annelida: Spionidae) with description of a new species. PLoS One 2020; 15:e0234238. [PMID: 32609771 PMCID: PMC7329067 DOI: 10.1371/journal.pone.0234238] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 05/19/2020] [Indexed: 12/04/2022] Open
Abstract
Spiophanes bombyx (Claparède, 1870) from the Gulf of Naples, Tyrrhenian Sea, Italy, was the first described Spiophanes with fronto-lateral horns on the prostomium. It was also considered the only horned species occurring in European waters. Our sequence data of five gene fragments suggest the presence of two horned sibling Spiophanes species in northern Europe: S. cf. bombyx in the North and the Norwegian seas, and S. cf. convexus in Brittany, northern France, and Bay of Biscay, northern Spain. Spiophanes cf. bombyx worms are genetically close to a single examined specimen of S. bombyx from Venice Lagoon, Italy but their conspecificity should be verified by further study. Our sequence data show that horned Spiophanes from the North Pacific are genetically distant from horned European species, and that S. uschakowi Zachs, 1933, originally described from the Sea of Japan (East Sea) is a valid species. The data also suggest the presence of two horned sibling Spiophanes species in the North East Pacific: S. hakaiensis Radashevsky & Pankova, n. sp. distributed from Alaska south to about Point Conception, and S. norrisi Meißner & Blank, 2009, distributed from San Francisco Bay south to Baja California Sur, Mexico. Spiophanes from South America, morphologically similar to S. norrisi, are suggested to belong to a new species. Molecular data also suggest the presence of two sibling species among the worms from northern Europe identified by morphology as S. kroyeri Grube, 1860. Worms from the Barents Sea and northern part of the North Sea are tentatively referred to as S. cf. kroyeri; worms from the northern and central parts of the North Sea and from the Bay of Biscay, northern Spain, are tentatively referred to as S. cf. cirrata M. Sars in G.O. Sars, 1872. Sequence data also show that S. duplex from California is genetically different from morphologically similar worms from South America. The South American worms are referred to resurrected S. soederstroemi Hartman, 1953 which was originally described from off Rio Grande do Sul, Brazil, and then considered as a junior synonym of S. duplex. Analysis of divergence times of Spiophanes lineages suggested that the origin of the most recent common ancestor of horned Spiophanes with metameric nuchal organs was around 11.1 mya (95% HPD: 5.1–19.0 mya) and that the divergence of the North Atlantic and North Pacific lineages was around 7.9 mya (95% HPD: 4.1–13.3 mya). The North Atlantic lineage was estimated to have diverged 4.8 mya (95% HPD: 2.2–8.6 mya), resulting in the origin of S. cf. bombyx and S. cf. convexus. The North Pacific lineage was estimated to have diverged first by the isolation and speciation of S. norrisi 1.7 mya (95% HPD: 2.3–1.0 mya), and then by the isolation and speciation of S. uschakowi and S. hakaiensis n. sp. 1.3 mya (95% HPD: 2.0–0.7 mya). The estimates place the divergences soon after maximum glacial period in the North Pacific (2.4–3.0 mya).
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Affiliation(s)
- Vasily I. Radashevsky
- National Scientific Center of Marine Biology, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia
- * E-mail: (VIR); (JWC)
| | - Victoria V. Pankova
- National Scientific Center of Marine Biology, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia
| | - Vasily V. Malyar
- National Scientific Center of Marine Biology, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia
| | - Tatyana V. Neretina
- White Sea Biological Station, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
- Kharkevich Institute for Information Transmission Problems, Russian Academy of Sciences, Moscow, Russia
| | - Jin-Woo Choi
- Research Institute of Oceanography, Seoul National University, Seoul, Republic of Korea
- * E-mail: (VIR); (JWC)
| | - Seungshic Yum
- Ecological Risk Research Division, Korea Institute of Ocean Science & Technology, Geoje, Republic of Korea
| | - Céline Houbin
- Station Biologique de Roscoff, CNRS-Sorbonne Université, Roscoff, France
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Grosse M, Bakken T, Nygren A, Kongsrud JA, Capa M. Species delimitation analyses of NE Atlantic Chaetozone (Annelida, Cirratulidae) reveals hidden diversity among a common and abundant marine annelid. Mol Phylogenet Evol 2020; 149:106852. [PMID: 32417496 DOI: 10.1016/j.ympev.2020.106852] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 05/09/2020] [Accepted: 05/11/2020] [Indexed: 01/04/2023]
Abstract
The polychaetes of the family Cirratulidae (Annelida) are common inhabitants in continental shelf benthic environments and considered an important group of organisms in environmental monitoring surveys. The family represents a taxonomic and systematic challenge, as monophyly of genera and evolutionary relationships within the family remain to be explored in a proper phylogenetic framework. Bitentaculate cirratulids, especially the genus Chaetozone, form one of the most species-diverse group of polychaetes worldwide. In this study, we aimed at evaluating the species diversity of the genus Chaetozonein benthic environments in the North East Atlantic by molecular means. We tested whether traditional morphological diagnostic characters are able to discriminate between the species hypothesis after species delimitation analyses, and assessed monophyly of the genera involved. Two DNA markers were sequenced from about 200 specimens belonging to Chaetozone, Aphelochaeta, Dodecaceria, Cirriformia and Cirratulus - the universal mitochondrial barcoding region COI, and the D1-D2 regions of the nuclear 28S rRNA - and analyzed with Bayesian inference, Maximum Likelihood and the species delimitation methods mPTP and GMYC. The first phylogeny of the family Cirratulidae is inferred and the genera Chaetozone, Dodecaceria and Cirratulus are recovered monophyletic. A total of 14 clusters of sequences - corresponding to species of Chaetozone - were found in the study area, and only one of them is here referred to a nominal species, Chaetozone setosa. Our results reveal several species complexes in the genus Chaetozone, that some of these independent lineages are unnamed and undescribed, and that morphological diagnostic features are in most cases unable to discriminate between the most similar species.
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Affiliation(s)
- Maël Grosse
- Norwegian University of Science and Technology, NTNU University Museum, Trondheim, Norway; University of the Balearic Island, Department of Biology, Ctra. Valldemossa km 7.5, Balearic Islands, Spain.
| | - Torkild Bakken
- Norwegian University of Science and Technology, NTNU University Museum, Trondheim, Norway
| | - Arne Nygren
- Institutionen för marina vetenskaper, Göteborgs Universitet, Göteborg, Sweden
| | - Jon A Kongsrud
- Department of Natural History, University Museum of Bergen, Bergen, Norway
| | - María Capa
- University of the Balearic Island, Department of Biology, Ctra. Valldemossa km 7.5, Balearic Islands, Spain; Norwegian University of Science and Technology, NTNU University Museum, Trondheim, Norway
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Elgetany AH, Rensburg H, Hektoen M, Matthee C, Budaeva N, Simon CA, Struck TH. Species delineation in the speciation grey zone—The case of
Diopatra
(Annelida, Onuphidae). ZOOL SCR 2020. [DOI: 10.1111/zsc.12421] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Asmaa H. Elgetany
- Zoology Department Faculty of Science Damietta University New Damietta, Central Zone Egypt
- Natural History Museum University of Oslo Oslo Norway
| | - Hendré Rensburg
- Department of Botany and Zoology Stellenbosch University Stellenbosch South Africa
| | - Martin Hektoen
- NTNU University Museum Norwegian University of Science and Technology Trondheim Norway
| | - Conrad Matthee
- Department of Botany and Zoology Stellenbosch University Stellenbosch South Africa
| | - Nataliya Budaeva
- Department of Natural History University Museum of Bergen University of Bergen Bergen Norway
| | - Carol A Simon
- Department of Botany and Zoology Stellenbosch University Stellenbosch South Africa
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Stiller J, Tilic E, Rousset V, Pleijel F, Rouse GW. Spaghetti to a Tree: A Robust Phylogeny for Terebelliformia (Annelida) Based on Transcriptomes, Molecular and Morphological Data. BIOLOGY 2020; 9:E73. [PMID: 32268525 PMCID: PMC7236012 DOI: 10.3390/biology9040073] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 04/03/2020] [Accepted: 04/03/2020] [Indexed: 12/23/2022]
Abstract
Terebelliformia-"spaghetti worms" and their allies-are speciose and ubiquitous marine annelids but our understanding of how their morphological and ecological diversity evolved is hampered by an uncertain delineation of lineages and their phylogenetic relationships. Here, we analyzed transcriptomes of 20 terebelliforms and an outgroup to build a robust phylogeny of the main lineages grounded on 12,674 orthologous genes. We then supplemented this backbone phylogeny with a denser sampling of 121 species using five genes and 90 morphological characters to elucidate fine-scale relationships. The monophyly of six major taxa was supported: Pectinariidae, Ampharetinae, Alvinellidae, Trichobranchidae, Terebellidae and Melinninae. The latter, traditionally a subfamily of Ampharetidae, was unexpectedly the sister to Terebellidae, and hence becomes Melinnidae, and Ampharetinae becomes Ampharetidae. We found no support for the recently proposed separation of Telothelepodidae, Polycirridae and Thelepodidae from Terebellidae. Telothelepodidae was nested within Thelepodinae and is accordingly made its junior synonym. Terebellidae contained the subfamily-ranked taxa Terebellinae and Thelepodinae. The placement of the simplified Polycirridae within Terebellinae differed from previous hypotheses, warranting the division of Terebellinae into Lanicini, Procleini, Terebellini and Polycirrini. Ampharetidae (excluding Melinnidae) were well-supported as the sister group to Alvinellidae and we recognize three clades: Ampharetinae, Amaginae and Amphicteinae. Our analysis found several paraphyletic genera and undescribed species. Morphological transformations on the phylogeny supported the hypothesis of an ancestor that possessed both branchiae and chaetae, which is at odds with proposals of a "naked" ancestor. Our study demonstrates how a robust backbone phylogeny can be combined with dense taxon coverage and morphological traits to give insights into the evolutionary history and transformation of traits.
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Affiliation(s)
- Josefin Stiller
- Scripps Institution of Oceanography, University of California, San Diego, CA 92037, USA; (E.T.)
- Centre for Biodiversity Genomics, Department of Biology, University of Copenhagen, 2100 Copenhagen, Denmark
| | - Ekin Tilic
- Scripps Institution of Oceanography, University of California, San Diego, CA 92037, USA; (E.T.)
- Institute of Evolutionary Biology and Animal Ecology, University of Bonn, 53121 Bonn, Germany
| | - Vincent Rousset
- Scripps Institution of Oceanography, University of California, San Diego, CA 92037, USA; (E.T.)
| | - Fredrik Pleijel
- Tjärnö Marine Laboratory, Department of Marine Sciences, University of Gothenburg, 405 30 Gothenburg, Sweden;
| | - Greg W. Rouse
- Scripps Institution of Oceanography, University of California, San Diego, CA 92037, USA; (E.T.)
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Korshunova T, Malmberg K, Prkić J, Petani A, Fletcher K, Lundin K, Martynov A. Fine-scale species delimitation: speciation in process and periodic patterns in nudibranch diversity. Zookeys 2020; 917:15-50. [PMID: 32206016 PMCID: PMC7076062 DOI: 10.3897/zookeys.917.47444] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Accepted: 01/02/2020] [Indexed: 11/12/2022] Open
Abstract
Using the nudibranch genus Amphorina as a model, ongoing speciation is demonstrated, as well as how periodic-like patterns in colouration can be included in an integrated method of fine-scale species delimitation. By combining several methods, including BPP analysis and the study of molecular, morphological, and ecological data from a large number of specimens within a broad geographic range from northern Europe to the Mediterranean, five species are recognised within the genus Amphorina, reviewed here for the first time. Two new species from the southwestern coast of Sweden are described, A. viriola sp. nov. and A. andra sp. nov. Evidence is provided of a recent speciation process between the two closely related, yet separate, species which inhabit the same geographic localities but demonstrate strict water depth differentiation, with one species inhabiting the shallow brackish top layer above the halocline and the other species inhabiting the underlying saltier water. The results presented here are of relevance for currently debated issues such as conservation in relation to speciation, fine species delimitation, and integration of molecular, morphological and ecological information in biodiversity studies. The periodic approach to biological taxonomy has considerable practical potential for various organismal groups.
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Affiliation(s)
- Tatiana Korshunova
- Koltzov Institute of Developmental Biology RAS, 26 Vavilova Str., 119334 Moscow, Russia Koltzov Institute of Developmental Biology RAS Moscow Russia.,Zoological Museum, Moscow State University, Bolshaya Nikitskaya Str. 6, 125009 Moscow, Russia Moscow State University Moscow Russia
| | - Klas Malmberg
- Aquatilis, Nostravägen 11, S-41743, Gothenburg, Sweden Aquatilis Gothenburgh Sweden
| | - Jakov Prkić
- Getaldiceva 11, C 21000 Split, Croatia Unaffiliated Split Croatia
| | - Alen Petani
- Put Kotlara 6, C 23000 Zadar, Croatia Unaffiliated Zadar Croatia
| | - Karin Fletcher
- Port Orchard, Washington, 98366, USA Unaffiliated Port Orchard United States of America
| | - Kennet Lundin
- Gothenburg Natural History Museum, Box 7283, SE-40235, Gothenburg, Sweden Gothenburg Natural History Museum Gothenburg Sweden.,Gothenburg Global Biodiversity Centre, Box 461, SE-40530, Gothenburg, Sweden Gothenburg Global Biodiversity Centre Gothenburg Sweden
| | - Alexander Martynov
- Zoological Museum, Moscow State University, Bolshaya Nikitskaya Str. 6, 125009 Moscow, Russia Moscow State University Moscow Russia
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Guggolz T, Meißner K, Schwentner M, Dahlgren TG, Wiklund H, Bonifácio P, Brandt A. High diversity and pan-oceanic distribution of deep-sea polychaetes: Prionospio and Aurospio (Annelida: Spionidae) in the Atlantic and Pacific Ocean. ORG DIVERS EVOL 2020. [DOI: 10.1007/s13127-020-00430-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
AbstractPrionospio Malmgren 1867 and Aurospio Maciolek 1981 (Annelida: Spionidae) are polychaete genera commonly found in the deep sea. Both genera belong to the Prionospio complex, whose members are known to have limited distinguishing characters. Morphological identification of specimens from the deep sea is challenging, as fragmentation and other damages are common during sampling. These issues impede investigations into the distribution patterns of these genera in the deep sea. In this study, we employ two molecular markers (16S rRNA and 18S) to study the diversity and the distribution patterns of Prionospio and Aurospio from the tropical North Atlantic, the Puerto Rico Trench and the central Pacific. Based on different molecular analyses (Automated Barcode Gap Discovery, GMYC, pairwise genetic distances, phylogenetics, haplotype networks), we were able to identify and differentiate 21 lineages (three lineages composed solely of GenBank entries) that represent putative species. Seven of these lineages exhibited pan-oceanic distributions (occurring in the Atlantic as well as the Pacific) in some cases even sharing identical 16S rRNA haplotypes in both oceans. Even the lineages found to be restricted to one of the oceans were distributed over large regional scales as for example across the Mid-Atlantic Ridge from the Caribbean to the eastern Atlantic (> 3389 km). Our results suggest that members of Prionospio and Aurospio may have the potential to disperse across large geographic distances, largely unaffected by topographic barriers and possibly even between oceans. Their high dispersal capacities are probably explained by their free-swimming long-lived planktonic larvae.
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Cerca J, Meyer C, Purschke G, Struck TH. Delimitation of cryptic species drastically reduces the geographical ranges of marine interstitial ghost-worms (Stygocapitella; Annelida, Sedentaria). Mol Phylogenet Evol 2020; 143:106663. [DOI: 10.1016/j.ympev.2019.106663] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 10/23/2019] [Accepted: 10/24/2019] [Indexed: 10/25/2022]
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Martin D, Gil J, Zanol J, Meca MA, Pérez Portela R. Digging the diversity of Iberian bait worms Marphysa (Annelida, Eunicidae). PLoS One 2020; 15:e0226749. [PMID: 31967996 PMCID: PMC6975537 DOI: 10.1371/journal.pone.0226749] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 12/03/2019] [Indexed: 12/19/2022] Open
Abstract
During a visit to polychaete-rearing facilities in the vicinity of Bay of Cádiz (SW Iberian Peninsula, Atlantic Ocean), we sampled two populations of Marphysa (Annelida, Eunicidae) originally occurring at nearby intertidal soft bottoms, one being more than twice as long as the other at the same age. We analysed them using partial sequences of two mitochondrial genes, 16S rDNA and Cytochrome Oxidase I, and classical morphological observations. Our molecular results confirmed that the two populations corresponded to two different species, with PTP species delimitation values ranging from 0.973 (long-bodied species) to 0.999 (short-bodied species). Morphologically, the short-bodied species resembles the recently redescribed M. sanguinea (Montagu, 1813), but differs mainly in having some parapodia with two subacicular hooks (one bidentate and one unidentate) and three types of pectinate chaetae, Two isodont present all along the body, and one particularly large anodont asymmetric appearing only from mid-posterior parapodia. The long-bodied species resembles Marphysa aegypti Elgetany, El-Ghobashy, Ghoneim and Struck, 2018 both in size and in having very robust, unidentate subacicular hooks (single in most parapodia, two-both similar in size and form-in some posterior parapodia), but differs, among other features, in the maxillary formula, the number of acicula per parapodia and the number and shape of pectinate chaetae. Accordingly, we are here fully illustrating and formally describing the two Iberian populations as Marphysa gaditana sp. nov. (short-bodied) and Marphysa chirigota sp. nov. (long-bodied) and we are emending the description of M. aegypti based on our revision of the type material. Also, we discuss on the distribution of the species of the sanguinea-group and on the relevancy of taxonomically robust studies when dealing with species of commercial interest having the potential of being globally spread through human activities, as well as on the misunderstandings caused by the incorrect use of the "cosmopolitan species" concept.
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Affiliation(s)
- Daniel Martin
- Center for Advanced Studies of Blanes (CEAB–CSIC), Blanes, Catalunya, Spain
| | - João Gil
- Centre of Marine Sciences, CCMAR, University of Algarve, Campus de Gambelas, Faro, Portugal
| | - Joana Zanol
- Universidade Federal do Rio de Janeiro, Museu Nacional, Departamento de Invertebrados, Rio de Janeiro, Brazil
| | - Miguel A. Meca
- Center for Advanced Studies of Blanes (CEAB–CSIC), Blanes, Catalunya, Spain
- Department of Natural History, University Museum of Bergen, University of Bergen, Bergen, Norway
| | - Rocío Pérez Portela
- Rosenstiel School of Marine & Atmospheric Science, University of Miami, Miami, Florida, United States of America
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Teixeira MAL, Vieira PE, Pleijel F, Sampieri BR, Ravara A, Costa FO, Nygren A. Molecular and morphometric analyses identify new lineages within a large
Eumida
(Annelida) species complex. ZOOL SCR 2019. [DOI: 10.1111/zsc.12397] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Marcos A. L. Teixeira
- Departamento de Biologia CBMA Centre of Molecular and Environmental Biology Universidade do Minho Braga Portugal
- Institute of Science and Innovation for Bio‐Sustainability (IB‐S) Universidade do Minho Braga Portugal
| | - Pedro E. Vieira
- Departamento de Biologia CBMA Centre of Molecular and Environmental Biology Universidade do Minho Braga Portugal
- Institute of Science and Innovation for Bio‐Sustainability (IB‐S) Universidade do Minho Braga Portugal
| | - Fredrik Pleijel
- Institutionen for marina vetenskaper Göteborgs Universitet Tjärnö Strömstad Sweden
| | - Bruno R. Sampieri
- Departamento de Biologia CBMA Centre of Molecular and Environmental Biology Universidade do Minho Braga Portugal
- Institute of Science and Innovation for Bio‐Sustainability (IB‐S) Universidade do Minho Braga Portugal
- Museu de Zoologia Instituto de Biologia Universidade Estadual de Campinas – IB/UNICAMP Campinas Brazil
| | - Ascensão Ravara
- Departamento de Biologia CESAM – Centro de Estudos do Ambiente e do Mar Universidade de Aveiro Aveiro Portugal
| | - Filipe O. Costa
- Departamento de Biologia CBMA Centre of Molecular and Environmental Biology Universidade do Minho Braga Portugal
- Institute of Science and Innovation for Bio‐Sustainability (IB‐S) Universidade do Minho Braga Portugal
| | - Arne Nygren
- Institutionen for marina vetenskaper Göteborgs Universitet Tjärnö Strömstad Sweden
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Langeneck J, Scarpa F, Maltagliati F, Sanna D, Barbieri M, Cossu P, Mikac B, Curini Galletti M, Castelli A, Casu M. A complex species complex: The controversial role of ecology and biogeography in the evolutionary history of
Syllis gracilis
Grube, 1840 (Annelida, Syllidae). J ZOOL SYST EVOL RES 2019. [DOI: 10.1111/jzs.12336] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
| | - Fabio Scarpa
- Dipartimento di Medicina Veterinaria Università degli Studi di Sassari Sassari Italy
| | | | - Daria Sanna
- Dipartimento di Scienze Biomediche Università degli Studi di Sassari Sassari Italy
| | | | - Piero Cossu
- Dipartimento di Medicina Veterinaria Università degli Studi di Sassari Sassari Italy
| | - Barbara Mikac
- Centro Interdipartimentale di Ricerca per le Scienze Ambientali (CIRSA) Università di Bologna Ravenna Italy
| | - Marco Curini Galletti
- Dipartimento di Medicina Veterinaria Università degli Studi di Sassari Sassari Italy
| | | | - Marco Casu
- Dipartimento di Medicina Veterinaria Università degli Studi di Sassari Sassari Italy
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42
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Weigand H, Beermann AJ, Čiampor F, Costa FO, Csabai Z, Duarte S, Geiger MF, Grabowski M, Rimet F, Rulik B, Strand M, Szucsich N, Weigand AM, Willassen E, Wyler SA, Bouchez A, Borja A, Čiamporová-Zaťovičová Z, Ferreira S, Dijkstra KDB, Eisendle U, Freyhof J, Gadawski P, Graf W, Haegerbaeumer A, van der Hoorn BB, Japoshvili B, Keresztes L, Keskin E, Leese F, Macher JN, Mamos T, Paz G, Pešić V, Pfannkuchen DM, Pfannkuchen MA, Price BW, Rinkevich B, Teixeira MAL, Várbíró G, Ekrem T. DNA barcode reference libraries for the monitoring of aquatic biota in Europe: Gap-analysis and recommendations for future work. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 678:499-524. [PMID: 31077928 DOI: 10.1016/j.scitotenv.2019.04.247] [Citation(s) in RCA: 178] [Impact Index Per Article: 35.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 04/16/2019] [Accepted: 04/16/2019] [Indexed: 05/21/2023]
Abstract
Effective identification of species using short DNA fragments (DNA barcoding and DNA metabarcoding) requires reliable sequence reference libraries of known taxa. Both taxonomically comprehensive coverage and content quality are important for sufficient accuracy. For aquatic ecosystems in Europe, reliable barcode reference libraries are particularly important if molecular identification tools are to be implemented in biomonitoring and reports in the context of the EU Water Framework Directive (WFD) and the Marine Strategy Framework Directive (MSFD). We analysed gaps in the two most important reference databases, Barcode of Life Data Systems (BOLD) and NCBI GenBank, with a focus on the taxa most frequently used in WFD and MSFD. Our analyses show that coverage varies strongly among taxonomic groups, and among geographic regions. In general, groups that were actively targeted in barcode projects (e.g. fish, true bugs, caddisflies and vascular plants) are well represented in the barcode libraries, while others have fewer records (e.g. marine molluscs, ascidians, and freshwater diatoms). We also found that species monitored in several countries often are represented by barcodes in reference libraries, while species monitored in a single country frequently lack sequence records. A large proportion of species (up to 50%) in several taxonomic groups are only represented by private data in BOLD. Our results have implications for the future strategy to fill existing gaps in barcode libraries, especially if DNA metabarcoding is to be used in the monitoring of European aquatic biota under the WFD and MSFD. For example, missing species relevant to monitoring in multiple countries should be prioritized for future collaborative programs. We also discuss why a strategy for quality control and quality assurance of barcode reference libraries is needed and recommend future steps to ensure full utilisation of metabarcoding in aquatic biomonitoring.
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Affiliation(s)
- Hannah Weigand
- Musée National d'Histoire Naturelle, 25 Rue Münster, 2160 Luxembourg, Luxembourg.
| | - Arne J Beermann
- University of Duisburg-Essen, Faculty of Biology, Aquatic Ecosystem Research, Universitaetsstr. 5, 45141 Essen, Germany.
| | - Fedor Čiampor
- Slovak Academy of Sciences, Plant Science and Biodiversity Centre, Zoology Lab, Dúbravská cesta 9, 84523 Bratislava, Slovakia.
| | - Filipe O Costa
- Centre of Molecular and Environmental Biology (CBMA), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Campus de Gualtar, 4710--057 Braga, Portugal.
| | - Zoltán Csabai
- University of Pécs, Faculty of Sciences, Department of Hydrobiology, Ifjúság útja 6, H7624 Pécs, Hungary.
| | - Sofia Duarte
- Centre of Molecular and Environmental Biology (CBMA), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Campus de Gualtar, 4710--057 Braga, Portugal.
| | - Matthias F Geiger
- Zoologisches Forschungsmuseum Alexander Koenig, Leibniz Institute for Animal Biodiversity, Adenauerallee 160, 53113 Bonn, Germany.
| | - Michał Grabowski
- University of Lodz, Faculty of Biology and Environmental Protection, Department of Invertebrate Zoology and Hydrobiology, Banacha 12/16, 90-237 Łódź, Poland.
| | - Frédéric Rimet
- INRA, Université Savoie Mont Blanc, UMR Carrtel, FR-74200 Thonon-les-Bains, France.
| | - Björn Rulik
- Zoologisches Forschungsmuseum Alexander Koenig, Leibniz Institute for Animal Biodiversity, Adenauerallee 160, 53113 Bonn, Germany.
| | - Malin Strand
- Swedish University of Agricultural Sciences, Swedish Species Information Centre, Uppsala, Sweden.
| | | | - Alexander M Weigand
- Musée National d'Histoire Naturelle, 25 Rue Münster, 2160 Luxembourg, Luxembourg; University of Duisburg-Essen, Faculty of Biology, Aquatic Ecosystem Research, Universitaetsstr. 5, 45141 Essen, Germany.
| | - Endre Willassen
- University of Bergen, University Museum of Bergen, NO-5007 Bergen, Norway.
| | - Sofia A Wyler
- info fauna - Centre Suisse de Cartographie de la Faune (CSCF), Avenue de Bellevaux 51, 2000 Neuchâtel, Switzerland.
| | - Agnès Bouchez
- INRA, Université Savoie Mont Blanc, UMR Carrtel, FR-74200 Thonon-les-Bains, France.
| | - Angel Borja
- AZTI - Marine Research Division, Herrera Kaia, Portualdea z/g, 20110 Pasaia, Gipuzkoa, Spain.
| | - Zuzana Čiamporová-Zaťovičová
- Slovak Academy of Sciences, Plant Science and Biodiversity Centre, Zoology Lab, Dúbravská cesta 9, 84523 Bratislava, Slovakia.
| | - Sónia Ferreira
- CIBIO/InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, Campus Agrário de Vairão, 4485-661 Vairão, Portugal
| | | | - Ursula Eisendle
- University of Salzburg, Department of Biosciences, Hellbrunnerstraße 34, 5020 Salzburg, Austria.
| | - Jörg Freyhof
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), 12587 Berlin, Germany.
| | - Piotr Gadawski
- University of Lodz, Faculty of Biology and Environmental Protection, Department of Invertebrate Zoology and Hydrobiology, Banacha 12/16, 90-237 Łódź, Poland.
| | - Wolfram Graf
- University of Natural Resources and Life Sciences, Vienna, Institute of Hydrobiology and Aquatic Ecosystem Management (IHG), Gregor-Mendel-Straße 33/DG, 1180 Vienna, Austria.
| | - Arne Haegerbaeumer
- Bielefeld University, Department of Animal Ecology, Konsequenz 45, 33615 Bielefeld, Germany.
| | | | - Bella Japoshvili
- Ilia State University, Institute of Zoology, ⅗ Cholokashvili ave, 0179 Tbilisi, Georgia.
| | - Lujza Keresztes
- Babeș-Bolyai University, Faculty of Biology and Geology, Center of Systems Biology, Biodiversity and Bioresources, Cliniclor 5-7, 400006 Cluj Napoca, Romania
| | - Emre Keskin
- Ankara University, Agricultural Faculty, Department of Fisheries and Aquaculture, Evolutionary Genetics Laboratory (eGL), Ankara, Turkey.
| | - Florian Leese
- University of Duisburg-Essen, Faculty of Biology, Aquatic Ecosystem Research, Universitaetsstr. 5, 45141 Essen, Germany.
| | - Jan N Macher
- Naturalis Biodiversity Center, PO Box 9517, 2300 RA Leiden, the Netherlands.
| | - Tomasz Mamos
- University of Lodz, Faculty of Biology and Environmental Protection, Department of Invertebrate Zoology and Hydrobiology, Banacha 12/16, 90-237 Łódź, Poland.
| | - Guy Paz
- Israel Oceanographic and Limnological Research, National Institute of Oceanography, Haifa 31080, Israel.
| | - Vladimir Pešić
- University of Montenegro, Department of Biology, Cetinjski put bb., 20000 Podgorica, Montenegro
| | | | | | | | - Buki Rinkevich
- Israel Oceanographic and Limnological Research, National Institute of Oceanography, Haifa 31080, Israel.
| | - Marcos A L Teixeira
- Centre of Molecular and Environmental Biology (CBMA), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Campus de Gualtar, 4710--057 Braga, Portugal
| | - Gábor Várbíró
- MTA Centre for Ecological Research, Danube Research Institute, Department of Tisza River Research, Bem square 18/C, H4026 Debrecen, Hungary.
| | - Torbjørn Ekrem
- Norwegian University of Science and Technology, NTNU University Museum, Department of Natural History, NO-7491 Trondheim, Norway.
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43
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Multilevel fine-scale diversity challenges the 'cryptic species' concept. Sci Rep 2019; 9:6732. [PMID: 31043629 PMCID: PMC6494890 DOI: 10.1038/s41598-019-42297-5] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 03/29/2019] [Indexed: 01/08/2023] Open
Abstract
‘Cryptic’ species are an emerging biological problem that is broadly discussed in the present study. Recently, a cryptic species definition was suggested for those species which manifest low morphological, but considerable genetic, disparity. As a case study we present unique material from a charismatic group of nudibranch molluscs of the genus Trinchesia from European waters to reveal three new species and demonstrate that they show a dual nature: on one hand, they can be considered a ‘cryptic’ species complex due to their overall similarity, but on the other hand, stable morphological differences as well as molecular differences are demonstrated for every species in that complex. Thus, this species complex can equally be named ‘cryptic’, ‘pseudocryptic’ or ‘non-cryptic’. We also present evidence for an extremely rapid speciation rate in this species complex and link the species problem with epigenetics. Available metazoan-wide data, which are broadly discussed in the present study, show the unsuitability of a ‘cryptic’ species concept because the degree of crypticity represents a continuum when a finer multilevel morphological and molecular scale is applied to uncover more narrowly defined species making the ‘cryptic’ addition to ‘species’ redundant. Morphological and molecular methods should be applied in concordance to form a fine-scale multilevel taxonomic framework, and not necessarily implying only an a posteriori transformation of exclusively molecular-based ‘cryptic’ species into morphologically-defined ‘pseudocryptic’ ones. Implications of the present study have importance for many fields, including conservation biology and fine-scale biodiversity assessments.
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44
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Aguado MT, Capa M, Lago-Barcia D, Gil J, Pleijel F, Nygren A. Species delimitation in Amblyosyllis (Annelida, Syllidae). PLoS One 2019; 14:e0214211. [PMID: 30970025 PMCID: PMC6457521 DOI: 10.1371/journal.pone.0214211] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 03/08/2019] [Indexed: 11/19/2022] Open
Abstract
Amblyosyllis is a worldwide distributed group of annelids mainly found in coastal environments. It is well known among the polychaete specialists mostly because of its notable beauty, showing bright colourful patterns and outstanding long and coiled appendices. Amblyosyllis is a monophyletic genus easy to identify due to its distinct diagnostic features; however, the species and their boundaries are, in most cases, not well defined. Herein, we provide an extensive sample of Amblyosyllis material (115 specimens) from several world geographic areas. We have studied the morphological features of each specimen and photographed them alive. Two mitochondrial DNA markers (COI and 16S) and one nuclear gene fragment (28S, D1 region) were sequenced. We performed phylogenetic analyses based on each DNA partition, as well as the combined data sets, obtaining congruent results. Species delimitation methods such as distance analyses, statistical parsimony networks and multi-rate Poisson tree processes were also applied. The combined results obtained from different methodologies and data sets are used to differentiate between, at least, 19 lineages compatible with the separately evolving meta-populations species concept. Four of these lineages are identified as nominal species, including the type species of Amblyosyllis, A. rhombeata. For three other lineages previously synonymized names are recovered, and seven lineages are described as new species. All of these species are described and supported by appropriate iconography. We recognize several morphological characters useful to identify species of Amblyosyllis, which in some cases should also be combined with molecular methods for species delineation. The genetic divergence in the genus is high, contrary to the morphological homogeneity observed. Two species show a wide geographical distribution, while the rest have a more restricted distribution. There are several examples of species with overlapping distribution patterns.
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Affiliation(s)
- María Teresa Aguado
- Centro de Investigación en Biodiversidad y Cambio Global (CIBC-UAM), Departamento de Biología, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, Madrid, Spain
- Animal Evolution and Biodiversity, Johann-Friedrich-Blumenbach Institute for Zoology & Anthropology, Georg-August-Universität Göttingen, Göttingen, Germany
| | - María Capa
- Departament de Biologia, Universitat de les Illes Balears, Palma, Illes Balears, Spain
- NTNU University Museum, Norwegian University of Science and Technology, Trondheim, Norway
| | - Domingo Lago-Barcia
- Laboratório de Ecologia e Evolução, Escola de Artes, Ciências e Humanidades (EACH), Universidade de São Paulo, São Paulo, São Paulo, Brazil
| | - João Gil
- Centre of Marine Sciences, CCMAR, University of Algarve, Faro, Portugal
- Centre d’Estudis Avançats de Blanes, CEAB-CSIC, Blanes, Girona, Spain
| | - Fredrik Pleijel
- Department of Marine Science, The Faculty of Science, University of Gothenburg, Tjärnö, Strömstad, Sweden
| | - Arne Nygren
- Department of Marine Science, The Faculty of Science, University of Gothenburg, Tjärnö, Strömstad, Sweden
- Sjöfartsmuseet Akvariet, Gothenburg, Sweden
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45
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Sen A, Duperron S, Hourdez S, Piquet B, Léger N, Gebruk A, Le Port AS, Svenning MM, Andersen AC. Cryptic frenulates are the dominant chemosymbiotrophic fauna at Arctic and high latitude Atlantic cold seeps. PLoS One 2018; 13:e0209273. [PMID: 30592732 PMCID: PMC6310283 DOI: 10.1371/journal.pone.0209273] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 12/03/2018] [Indexed: 12/02/2022] Open
Abstract
We provide the first detailed identification of Barents Sea cold seep frenulate hosts and their symbionts. Mitochondrial COI sequence analysis, in combination with detailed morphological investigations through both light and electron microscopy was used for identifying frenulate hosts, and comparing them to Oligobrachia haakonmosbiensis and Oligobrachia webbi, two morphologically similar species known from the Norwegian Sea. Specimens from sites previously assumed to host O. haakonmosbiensis were included in our molecular analysis, which allowed us to provide new insight on the debate regarding species identity of these Oligobrachia worms. Our results indicate that high Arctic seeps are inhabited by a species that though closely related to Oligobrachia haakonmosbiensis, is nonetheless distinct. We refer to this group as the Oligobrachia sp. CPL-clade, based on the colloquial names of the sites they are currently known to inhabit. Since members of the Oligobrachia sp. CPL-clade cannot be distinguished from O. haakonmosbiensis or O. webbi based on morphology, we suggest that a complex of cryptic Oligobrachia species inhabit seeps in the Norwegian Sea and the Arctic. The symbionts of the Oligobrachia sp. CPL-clade were also found to be closely related to O. haakonmosbiensis symbionts, but genetically distinct. Fluorescent in situ hybridization and transmission electron micrographs revealed extremely dense populations of bacteria within the trophosome of members of the Oligobrachia sp. CPL-clade, which is unusual for frenulates. Bacterial genes for sulfur oxidation were detected and small rod shaped bacteria (round in cross section), typical of siboglinid-associated sulfur-oxidizing bacteria, were seen on electron micrographs of trophosome bacteriocytes, suggesting that sulfide constitutes the main energy source. We hypothesize that specific, local geochemical conditions, in particular, high sulfide fluxes and concentrations could account for the unusually high symbiont densities in members of the Oligrobrachia sp. CPL-clade.
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Affiliation(s)
- Arunima Sen
- Centre for Arctic Gas Hydrate, Environment and Climate (CAGE), UiT The Arctic University of Norway, Tromsø, Norway
| | - Sébastien Duperron
- Sorbonne Université, UMR7208 (MNHN, CNRS, IRD, UCN, UA) Biologie des organismes et écosystèmes aquatiques (BOREA), Paris, France.,Muséum National d'Histoire Naturelle-UMR7245 (MNHN CNRS) Mécanismes de Communication et Adaptation des Micro-organismes (MCAM), Paris, France
| | - Stéphane Hourdez
- UMR7144 Sorbonne Université, CNRS-Equipe Adaptation et Biologie des Invertébrés Marins en Conditions Extrêmes (ABICE)-Station Biologique de Roscoff, Roscoff, France
| | - Bérénice Piquet
- Sorbonne Université, UMR7208 (MNHN, CNRS, IRD, UCN, UA) Biologie des organismes et écosystèmes aquatiques (BOREA), Paris, France.,UMR7144 Sorbonne Université, CNRS-Equipe Adaptation et Biologie des Invertébrés Marins en Conditions Extrêmes (ABICE)-Station Biologique de Roscoff, Roscoff, France
| | - Nelly Léger
- Sorbonne Université, UMR7208 (MNHN, CNRS, IRD, UCN, UA) Biologie des organismes et écosystèmes aquatiques (BOREA), Paris, France
| | | | - Anne-Sophie Le Port
- UMR7144 Sorbonne Université, CNRS-Equipe Adaptation et Biologie des Invertébrés Marins en Conditions Extrêmes (ABICE)-Station Biologique de Roscoff, Roscoff, France
| | - Mette Marianne Svenning
- Centre for Arctic Gas Hydrate, Environment and Climate (CAGE), UiT The Arctic University of Norway, Tromsø, Norway.,Department of Arctic Marine Biology, UiT The Arctic University of Norway, Tromsø, Norway
| | - Ann C Andersen
- UMR7144 Sorbonne Université, CNRS-Equipe Adaptation et Biologie des Invertébrés Marins en Conditions Extrêmes (ABICE)-Station Biologique de Roscoff, Roscoff, France
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