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Riehl T, Schienbein KE, Mifsud C. A new species of Mexicope Hooker, 1985 (Crustacea, Isopoda) - the first record of Acanthaspidiidae Menzies, 1962 from the Mediterranean Sea. Biodivers Data J 2024; 12:e121508. [PMID: 38812888 PMCID: PMC11134053 DOI: 10.3897/bdj.12.e121508] [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: 02/23/2024] [Accepted: 04/08/2024] [Indexed: 05/31/2024] Open
Abstract
Background The marine isopod family Acanthaspidiidae Menzies, 1962 (Asellota, Janiroidea) has global distribution from shelf to hadal depth. The majority of species has been recorded from relatively deep waters and the Southern Hemisphere. To date, 36 species have been described in the family belonging to three genera: Ianthopsis Beddard, 1886; Iolanthe Beddard, 1886; and Mexicope Hooker, 1985. New information Here, a new species of Mexicope is described from Maltese waters, adding a fourth species to the genus. It is the first member of the family reported from the Mediterranean Sea. The new species can be recognised by the unique combination of the following characters: cephalothorax with pre-ocular spine large and pointed anterolaterally, rostral projection blunt, eyes reduced; pereonal sternites each with one ventral spine; pereonite two lateral margins with single projection; pleotelson posterior apex long, projecting to approximately half of the length of the uropod protopod; pleopods I distolateral lobes projecting beyond distomedial lobes, apices curved and pointed laterally; uropod exopod length approximately 0.5 endopod length. An identification key to the species of Mexicope is presented and the generic diagnoses of Ianthopsis and Mexicope are compared, discussed and revised.
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Affiliation(s)
- Torben Riehl
- Senckenberg Gesellschaft für Naturforschung, Frankfurt, GermanySenckenberg Gesellschaft für NaturforschungFrankfurtGermany
- Senckenberg Research Institute and Natural History Museum, Frankfurt am Main, GermanySenckenberg Research Institute and Natural History MuseumFrankfurt am MainGermany
- Johann Wolfgang Goethe University Frankfurt, Frankfurt am Main, GermanyJohann Wolfgang Goethe University FrankfurtFrankfurt am MainGermany
| | - Katharina Ellen Schienbein
- Johann Wolfgang Goethe University Frankfurt, Department of Biological Sciences, Institute of Ecology, Evolution and Diversity, Frankfurt am Main, GermanyJohann Wolfgang Goethe University Frankfurt, Department of Biological Sciences, Institute of Ecology, Evolution and DiversityFrankfurt am MainGermany
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Kaiser S, Stransky B, Jennings RM, Kihara TC, Brix S. Combining morphological and mitochondrial DNA data to describe a new species of Austroniscus Vanhöffen, 1914 (Isopoda, Janiroidea, Nannoniscidae) linking abyssal and hadal depths of the Puerto Rico Trench. Zootaxa 2023; 5293:401-434. [PMID: 37518475 DOI: 10.11646/zootaxa.5293.3.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Indexed: 08/01/2023]
Abstract
Hadal trenches are perceived as a unique deep-sea ecosystem with fundamentally different communities compared to the nearby abyss. So far, however, scarce information exists about how populations are genetically linked within a trench and about mechanisms for species divergence. The present study presents the morphological and molecular-genetic characterization and description of a new nannoniscid species within the genus Austroniscus Vanhöffen, 1914 obtained from abyssal and hadal depths of the Puerto Rico Trench, NW Atlantic. Samples were collected as part of the Vema-TRANSIT expedition onboard RV Sonne in January 2015. Because of the large depth differences between sampling locations (4,552-8,338 m), we expected to find different species within the genus inhabiting abyssal and hadal sites. Initial morphological examination using traditional light microscopy and Confocal Laser Scanning Microscopy was paired with subsequent molecular analysis based on mtDNA (COI and 16S). Contrary to our assumptions, combined morphological and molecular species delimitation analyses (sGMYC, mPTP, ABGD) revealed the presence of only one species spanning the abyssal and hadal seafloor of the Puerto Rico Trench. In addition, comparison with type material could show that this species belongs to a new species, Austroniscus brandtae n. sp., which is described herein. Incongruence between some species delimitation methods suggesting the presence of multiple species is interpreted as strong genetic population structuring within the trench, which is also supported by the analysis of the haplotype networks. The geographic and bathymetric distribution of Austroniscus species is discussed. The species described herein represents the first in the genus Austroniscus from the Atlantic Ocean and the deepest record of the genus to date, and hence significantly expanding previously known limits of its geographic and bathymetric range.
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Affiliation(s)
- Stefanie Kaiser
- University of Łódź; Faculty of Biology and Environmental Protection; Department of Invertebrate Zoology and Hydrobiology; Banacha St. 12/16; Łódź; 90-237; Poland; Senckenberg Research Institute; Department of Marine Zoology; Section Crustacea; Senckenberganlage 25; 60325 Frankfurt; Germany.
| | - Bente Stransky
- Museum of Nature; Leibniz Institute for the Analysis of Biodiversity Change (LIB); Centre for Taxonomy and Morphology; Martin- Luther-King-Platz 3; 20146 Hamburg; Germany.
| | - Robert M Jennings
- Temple University; Biology Department; 1900 North 12th Street; Philadelphia; PA 19122; USA.
| | - Terue Cristina Kihara
- Integrated Environmental Solutions UG-INES; c/o DZMB; Südstrand 44; 26382 Wilhelmshaven; Germany.
| | - Saskia Brix
- German Centre for Marine Biodiversity Research (DZMB); Senckenberg am Meer; Martin-Luther-King-Platz 3; 20146 Hamburg; Germany.
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Two New Uromunna Species (Isopoda: Asellota: Munnidae) from the Korean Peninsula and Their Phylogenetic Position within Munnoid Groups. DIVERSITY 2022. [DOI: 10.3390/d15010020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Two new Uromunna species, Uromunna mundongensis sp. n. and Uromunna jejuensis sp. n., are described from the Korean Peninsula, representing the first record of the genus in Korean waters. Genetic analyses using two mitochondrial (COI, Cytb) and one ribosomal (18S rRNA) gene allowed us to confirm high pair-wise interspecific differences with the establishment of reliable barcoding gaps of COI (19.9%) and 18S (0.4%) between the new species. Finally, the phylogenetic relationship between the Uromunna species as well as the position of the genus within the munnoid groups are reconstructed using 18S.
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Kaiser S, Kihara TC, Brix S, Mohrbeck I, Janssen A, Jennings RM. Species boundaries and phylogeographic patterns in new species of Nannoniscus (Janiroidea: Nannoniscidae) from the equatorial Pacific nodule province inferred from mtDNA and morphology. Zool J Linn Soc 2021. [DOI: 10.1093/zoolinnean/zlaa174] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Abstract
Spatial patterns of genetic variation (based on COI and 16S mtDNA) for morphologically similar species in the isopod genus Nannoniscus G.O. Sars. 1870 were examined that occur broadly across the Clarion Clipperton Fracture Zone (CCZ). Samples were obtained from five different licence areas as well as an Area of Particular Environmental Interest (APEI-6) with sites located at various distances (a few to several hundred kilometres) from one another. Applying three different species delimitation (SD) methods (sGMYC, mPTP and ABGD) of the molecular data, we could distinguish between four and 12 different molecular taxonomic operational units (MOTUs). Morphological analyses could confirm five distinct phenotypic clades that represent species new to science and are described here: Nannoniscus brenkei sp. nov., Nannoniscus hilario sp. nov., Nannoniscus magdae sp. nov., Nannoniscus menoti sp. nov. and Nannoniscus pedro sp. nov. Despite the assumed limited dispersal capacity of Nannoniscus species, we found haplotypes of two species to be geographically widespread (up to > 1400 km apart), as opposed to several divergent clades occurring in close vicinity or even sympatry. Geographic distance appeared to explain the phylogeographic structure of Nannoniscus species to some extent, although oceanographic features and level of environmental heterogeneity were probably equally important.
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Affiliation(s)
- Stefanie Kaiser
- German Centre for Marine Biodiversity Research (DZMB), Senckenberg am Meer, c/o Center of Natural History (CeNak), Universität Hamburg, Martin-Luther-King-Platz, Hamburg, Germany
- CeNak, Universität Hamburg, Martin-Luther-King-Platz, Hamburg, Germany
| | - Terue Cristina Kihara
- German Centre for Marine Biodiversity Research (DZMB), Senckenberg am Meer, Südstrand, Wilhelmshaven, Germany
- INES Integrated Environmental Solutions UG, Südstrand, Wilhelmshaven, Germany
| | - Saskia Brix
- German Centre for Marine Biodiversity Research (DZMB), Senckenberg am Meer, c/o Center of Natural History (CeNak), Universität Hamburg, Martin-Luther-King-Platz, Hamburg, Germany
| | - Inga Mohrbeck
- German Centre for Marine Biodiversity Research (DZMB), Senckenberg am Meer, Südstrand, Wilhelmshaven, Germany
| | - Annika Janssen
- German Centre for Marine Biodiversity Research (DZMB), Senckenberg am Meer, Südstrand, Wilhelmshaven, Germany
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Riehl T, De Smet B. Macrostylis metallicola spec. nov.-an isopod with geographically clustered genetic variability from a polymetallic-nodule area in the Clarion-Clipperton Fracture Zone. PeerJ 2020; 8:e8621. [PMID: 32149025 PMCID: PMC7049464 DOI: 10.7717/peerj.8621] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 01/22/2020] [Indexed: 11/20/2022] Open
Abstract
Background The Clarion-Clipperton Fracture Zone (CCFZ) in the Northeast Central Pacific Ocean is a region of heightened scientific and public interest because of its wealth in manganese nodules. Due to a poor ecological understanding at the abyssal seafloor and limited knowledge of the organisms inhabiting this area, huge efforts in alpha taxonomy are required. To predict and manage potential hazards associated with future mining, taxonomy is an essential first step to grasp fundamental ecosystem traits, such as biogeographic patterns, connectivity, and the potential for post-impact recolonization. Amongst samples from the Global Sea Mineral Resources NV exploration area (EA) in the CCFZ an undescribed species of the isopod crustacean family Macrostylidae was discovered. Previously, it has been reported from two other nearby regions, the Institut Français de Recherche pour l’Exploitation de la Mer and BGR EAs. There it was one of the more widely distributed and abundant species of the benthic macrofauna and exhibited geographically structured populations. It nevertheless remained taxonomically undescribed so far. Methods The new species is described by means of integrative taxonomy. Morphologically, macro photography, confocal microscopy, scanning electron microscopy and light microscopy were used to describe the species and to get first insights on its phylogenetic origin. Additionally, mitochondrial DNA markers were used to test the morphological allocation of the two dimorphic sexes and juvenile stages, to analyze geographic patterns of genetic differentiation, and to study intra-and inter-species relationships, also in light of previously published population genetics on this species. Results The new species, Macrostylis metallicola spec. nov., is a typical representative of Macrostylidae as recognizable from the fossosoma, prognathous cephalothorax, and styliform uropods. It can be morphologically distinguished from congeners by a combination of character states which include the autapomorphic shape of the first pleopod of the copulatory male. A sexual dimorphism, as expressed by a peculiar sequence of article length-width ratios of the male antennula, indicates a relationship with M. marionaeKniesz, Brandt & Riehl (2018) and M. longipesHansen (1916) amongst other species sharing this dimorphism. Mitochondrial genetic markers point in a similar direction. M. metallicola appears to be amongst the more common and widely distributed components of the benthic macrofauna in this region which may suggest a resilience of this species to future mining activities because of its apparent potential for recolonization of impacted sites from adjacent areas of particular environmental interest. The genetic data, however, show geographic clustering of its genetic variability, pointing towards a limited potential for dispersal. Local extinction of populations could potentially not be compensated quickly and would mean a loss of genetic diversity of this species.
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Affiliation(s)
- Torben Riehl
- Department of Marine Zoology, Section Crustacea, Senckenberg Research Institute and Natural History Museum, Frankfurt am Main, Germany.,Institute for Ecology, Evolution and Diversity, Johann Wolfgang Goethe Universität Frankfurt am Main, Frankfurt am Main, Germany.,Centre for Natural History, Zoological Museum, Universität Hamburg, Hamburg, Germany
| | - Bart De Smet
- Department of Biology, Marine Biology Research Group, Ghent University, Ghent, Belgium
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Kim J, Lee W, Karanovic I. A new interstitial species of the genus Caecianiropsis Menzies & Pettit, 1956 (Isopoda, Asellota) from Korea. Zookeys 2019; 832:35-56. [PMID: 30930644 PMCID: PMC6435604 DOI: 10.3897/zookeys.832.30241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 01/29/2019] [Indexed: 11/17/2022] Open
Abstract
A new interstitial species, Caecianiropsisgoseongensissp. n. is described from littoral off the east coast of Korea (Sea of Japan). The species can be distinguished from its congeners by the number of antennular articles, shape of the male appendix masculina, setation of pereopods, and length ratio of the uropodal rami. To aid species identification a taxonomic key to all species of Caecianiropsis Menzies & Pettit, 1956 is also provided as well as a partial 16S mitochondrial ribosome RNA of the new species, which is the first genetic information for the genus.
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Bober S, Riehl T, Henne S, Brandt A. New Macrostylidae (Isopoda) from the Northwest Pacific Basin described by means of integrative taxonomy with reference to geographical barriers in the abyss. Zool J Linn Soc 2017. [DOI: 10.1093/zoolinnean/zlx042] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Simon Bober
- University of Hamburg, Center of Natural History (CeNak), Zoological Museum, Hamburg, Germany
| | - Torben Riehl
- Department Marine Zoology, Senckenberg Research Institute and Natural History Museum, Crustacea, Frankfurt, Germany
| | - Stephan Henne
- University of Hamburg, Center of Natural History (CeNak), Zoological Museum, Hamburg, Germany
| | - Angelika Brandt
- Department Marine Zoology, Senckenberg Research Institute and Natural History Museum, Crustacea, Frankfurt, Germany
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Bober S, Riehl T, Brandt A. An organ of equilibrium in deep-sea isopods revealed: the statocyst of Macrostylidae (Crustacea, Peracarida, Janiroidea). ZOOMORPHOLOGY 2017. [DOI: 10.1007/s00435-017-0376-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Kim J, Lee W, Karanovic I. A new species of Microcharon from marine interstitial waters, Shizuoka, Japan (Isopoda, Lepidocharontidae). Zookeys 2017:13-31. [PMID: 28769714 PMCID: PMC5523378 DOI: 10.3897/zookeys.680.12048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 04/18/2017] [Indexed: 11/16/2022] Open
Abstract
A new species of Microcharon Karaman, 1934 (Asellota: Lepidocharontidae) is described from Miho-Uchihama beach, Shizuoka, Japan. Microcharontanakaisp. n. differs from its congeners by having nine simple, five penicillate setae on antennal article 6; one simple distal seta on article 1 of the mandibular palp and having the apical lobe of male pleopod 1 convex, rounded, armed with seven setae. A key to Asian species of the genus and 16S rRNA of the new species are provided.
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Affiliation(s)
- Jeongho Kim
- Department of Life Science, Hanyang University, Seoul, Korea
| | - Wonchoel Lee
- Department of Life Science, Hanyang University, Seoul, Korea
| | - Ivana Karanovic
- Department of Life Science, Hanyang University, Seoul, Korea.,Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, 7001, Australia
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Brandt A, Brix S, Held C, Kihara TC. Molecular differentiation in sympatry despite morphological stasis: deep-seaAtlantoserolis Wägele, 1994 andGlabroserolis Menzies, 1962 from the south-west Atlantic (Crustacea: Isopoda: Serolidae). Zool J Linn Soc 2014. [DOI: 10.1111/zoj.12178] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Angelika Brandt
- Zoological Institute and Zoological Museum; Biocenter Grindel; University of Hamburg; Martin-Luther-King-Platz 3 20146 Hamburg Germany
| | - Saskia Brix
- Senckenberg am Meer; German Centre for Marine Biodiversity Research (DZMB); c/o Biocenter Grindel Martin-Luther-King-Platz 3 D-20146 Hamburg Germany
| | - Christoph Held
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research; Am Alten Hafen 26 D-27568 Bremerhaven Germany
| | - Terue Cristina Kihara
- Senckenberg am Meer; German Centre for Marine Biodiversity Research (DZMB); Südstrand 44 D-26382 Wilhelmshaven Germany
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Riehl T, Wilson GDF, Malyutina MV. Urstylidae - a new family of abyssal isopods (Crustacea: Asellota) and its phylogenetic implications. Zool J Linn Soc 2014. [DOI: 10.1111/zoj.12104] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Torben Riehl
- Biocenter Grindel & Zoological Museum; University of Hamburg; Martin-Luther-King-Platz 3 20146 Hamburg Germany
- Marine Invertebrates; Australian Museum; 6 College Street Sydney NSW 2010 Australia
| | - George D. F. Wilson
- Marine Invertebrates; Australian Museum; 6 College Street Sydney NSW 2010 Australia
| | - Marina V. Malyutina
- A.V. Zhirmunsky Institute of Marine Biology; FEB RAS, 17 Palchevskogo Street 690041 Vladivostok Russia
- Far East Federal University; Vladivostok Russia
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Riehl T, Kaiser S. Conquered from the deep sea? A new deep-sea isopod species from the Antarctic shelf shows pattern of recent colonization. PLoS One 2012; 7:e49354. [PMID: 23145160 PMCID: PMC3492298 DOI: 10.1371/journal.pone.0049354] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Accepted: 10/08/2012] [Indexed: 11/18/2022] Open
Abstract
The Amundsen Sea, Antarctica, is amongst the most rapidly changing environments of the world. Its benthic inhabitants are barely known and the BIOPEARL 2 project was one of the first to biologically explore this region. Collected during this expedition, Macrostylis roaldi sp. nov. is described as the first isopod discovered on the Amundsen-Sea shelf. Amongst many characteristic features, the most obvious characters unique for M. roaldi are the rather short pleotelson and short operculum as well as the trapezoid shape of the pleotelson in adult males. We used DNA barcodes (COI) and additional mitochondrial markers (12S, 16S) to reciprocally illuminate morphological results and nucleotide variability. In contrast to many other deep-sea isopods, this species is common and shows a wide distribution. Its range spreads from Pine Island Bay at inner shelf right to the shelf break and across 1,000 m bathymetrically. Its gene pool is homogenized across space and depth. This is indicative for a genetic bottleneck or a recent colonization history. Our results suggest further that migratory or dispersal capabilities of some species of brooding macrobenthos have been underestimated. This might be relevant for the species' potential to cope with effects of climate change. To determine where this species could have survived the last glacial period, alternative refuge possibilities are discussed.
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Affiliation(s)
- Torben Riehl
- Biocenter Grindel & Zoological Museum, University of Hamburg, Hamburg, Germany.
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Kaiser S, Marner M. A new species ofPentacerationJust, 2009 (Isopoda, Asellota, Paramunnidae) from the Challenger Plateau, New Zealand (Tasman Sea). ZOOSYST EVOL 2012. [DOI: 10.1002/zoos.201200015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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