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      A new species of Princaxelia from Shinkai Seep Field, Mariana Trench ( Crustacea , Amphipoda , Pardaliscidae )

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          Abstract

          A new pardaliscid amphipod, Princaxelia marianaensis sp. nov., is described from a single female captured at the Shinkai Seep Field, Mariana Trench, from a depth of 5,689–5,683 m. A key to species of Princaxelia is provided. This is the first species of Princaxelia to be described from the Mariana Trench, and the second report of this genus from this region.

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          Most cited references15

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          DNA primers for amplification of mitochondrial cytochrome c oxidase subunit I from diverse metazoan invertebrates.

          M Beier (1966)
          We describe "universal" DNA primers for polymerase chain reaction (PCR) amplification of a 710-bp fragment of the mitochondrial cytochrome c oxidase subunit I gene (COI) from 11 invertebrate phyla: Echinodermata, Mollusca, Annelida, Pogonophora, Arthropoda, Nemertinea, Echiura, Sipuncula, Platyhelminthes, Tardigrada, and Coelenterata, as well as the putative phylum Vestimentifera. Preliminary comparisons revealed that these COI primers generate informative sequences for phylogenetic analyses at the species and higher taxonomic levels.
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            • Abstract: found
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            A serpentinite-hosted ecosystem in the Southern Mariana Forearc.

            Several varieties of seafloor hydrothermal vents with widely varying fluid compositions and temperatures and vent communities occur in different tectonic settings. The discovery of the Lost City hydrothermal field in the Mid-Atlantic Ridge has stimulated interest in the role of serpentinization of peridotite in generating H(2)- and CH(4)-rich fluids and associated carbonate chimneys, as well as in the biological communities supported in highly reduced, alkaline environments. Abundant vesicomyid clam communities associated with a serpentinite-hosted hydrothermal vent system in the southern Mariana forearc were discovered during a DSV Shinkai 6500 dive in September 2010. We named this system the "Shinkai Seep Field (SSF)." The SSF appears to be a serpentinite-hosted ecosystem within a forearc (convergent margin) setting that is supported by fault-controlled fluid pathways connected to the decollement of the subducting slab. The discovery of the SSF supports the prediction that serpentinite-hosted vents may be widespread on the ocean floor. The discovery further indicates that these serpentinite-hosted low-temperature fluid vents can sustain high-biomass communities and has implications for the chemical budget of the oceans and the distribution of abyssal chemosynthetic life.
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              • Record: found
              • Abstract: not found
              • Article: not found

              Brucite chimney formation and carbonate alteration at the Shinkai Seep Field, a serpentinite-hosted vent system in the southern Mariana forearc

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                Author and article information

                Contributors
                Journal
                Zookeys
                Zookeys
                2
                urn:lsid:arphahub.com:pub:45048D35-BB1D-5CE8-9668-537E44BD4C7E
                urn:lsid:zoobank.org:pub:91BD42D4-90F1-4B45-9350-EEF175B1727A
                ZooKeys
                Pensoft Publishers
                1313-2989
                1313-2970
                2021
                04 February 2021
                : 1015
                : 115-127
                Affiliations
                [1 ] Graduate School of Humanities and Social Sciences, Hiroshima University, Higashi-Hiroshima 739-8524, Japan Hiroshima University Higashi-Hiroshima Japan
                [2 ] X-STAR, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima-cho, Yokosuka, Kanagawa 237-0061, Japan X-STAR, Japan Agency for Marine-Earth Science and Technology Yokosuka Japan
                [3 ] Department of Marine Biology, School of Marine Science and Technology, Tokai University, 3-20-1, Orido, Shimizu, Shizuoka, Shizuoka 424-8610, Japan Tokai University Shimizu Japan
                [4 ] Hydrographic and Oceanographic Department of Japan, 3-1-1 Kasumigaseki, Chiyoda-ku, Tokyo 100-8932, Japan Hydrographic and Oceanographic Department of Japan Tokyo Japan
                [5 ] Research Institute for Marine Geodynamics (IMG), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima-cho, Yokosuka, Kanagawa 237-0061, Japan Research Institute for Marine Geodynamics Yokosuka Japan
                [6 ] Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan Nagoya University Nagoya Japan
                Author notes
                Corresponding author: Ko Tomikawa ( tomikawa@ 123456hiroshima-u.ac.jp )

                Academic editor: Alan Myers

                Article
                PMC7878467 PMC7878467 7878467 59683
                10.3897/zookeys.1015.59683
                7878467
                33613043
                50b942f9-19e5-486e-8880-1599d2cef5c7

                This is an open access article distributed under the terms of the CC0 Public Domain Dedication.

                History
                : 15 October 2020
                : 11 December 2020
                Categories
                Research Article
                Amphipoda
                Systematics
                Commonwealth of the Northern Mariana Islands

                hadal zone,deep sea,COI,first record,systematics, Princaxelia marianaensis

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