Abstract
During research dives by the submersible ROV Faxian, two margaritid species were collected in Okinawa Trough and Manus Back-Arc Basin. In present study, we describe and illustrate them as Margarites similis sp. nov. and Margarites manusensis sp. nov., respectively. The generic allocation is based on shell morphology and radula features. Phylogenetic reconstruction using the cytochrome c oxidase subunit I (COI) gene also supports their placements within Margarites.
References
Castelin, M., Steenkiste, N.V., Pante, E., Harbo, R., Lowe, G., Gilmore, S.R., Therriault, T.W. & Abbott, C.L. (2016) A new integrative framework for large-scale assessments of biodiversity and community dynamics, using littoral gastropods and crabs of British Columbia, Canad. Molecular Ecology Resources, 16 (6), 1322–1339.
https://doi.org/10.1111/1755-0998.12534Folmer, O., Black, M., Hoeh, W., Lutz, R. & Vrijenhoek, R. (1994) DNA primers for amplication of mitochondrial cytpchrome c oxidase submit from diverse metazoan invertebrate. Molecular Marine Biology and Biotechnology, 3, 294–299.
Gray, J.E. (1847) A list of the genera of recent Mollusca: their synonyma and types. Proceedings of the Zoological Society of London, 1847, 129–219.
Haszprunar, G. (1988a) On the origin and evolution of major gastropod groups, with special reference to the Streptoneura. Journal of Molluscan Studies, 54, 367–441.
https://doi.org/10.1093/mollus/54.4.367Haszprunar, G. (1988b) A preliminary phylogenetic analysis of the streptoneurous gastropods. In: Ponder, W.F. (Ed.), Prosobranch phylogeny, proceedings of a symposium held at the 9th International Malacological Congress, Edinburgh, 1986. Malacological Review, 4 (Supplement), 7–16.
Hickman, C.S. (1980) Gastropod radulae and the assessment of form in evolutionary paleontology. Paleobiology, 6 (3), 276–294.
https://doi.org/10.1017/S0094837300006801Hickman, C.S. (1988) Archaeogastropod evolution, phylogeny and systematics: a re-evaluation. In: Ponder, W.F. (Ed.), Prosobranch phylogeny, proceedings of a symposium held at the 9th International Malacological Congress, Edinburgh, 1986. Malacological Review, 4 (Supplement), 17–34.
Hickman, C.S. & McLean, J.H. (1990) Systematic revision and suprageneric classification of trochacean gastropods. Natural History Museum of Los Angeles County, 35, 1–169.
Kano, Y. (2008) Vetigastropod phylogeny and a new concept of Seguenzioidea: independent evolution of copulatory organs in the deep-sea habitats. Zoologica Scripta, 37 (1), 1–21.
https://doi.org/10.1111/j.1463-6409.2007.00316.xKantor, Yu. I. & Sysoev, A.V. (2006) Marine and brackish water Gastropod of Russia and adjacent countries: an illustrated catalogue. KMK Scientific Press, Moscow, 371 pp.
Kimura, M. (1980) A simple method for estimating evolutionary rate of base substitutions through comparative studies of nucleotide sequences. Journal of Molecular Evolution, 16, 111–120.
https://doi.org/10.1007/BF01731581Larkin, M.A., Blackshields, G., Brown, N.P., Chenna, R., McGettigan, P.A., McWilliam, H., Valentin, F., Wallace, I.M., Wilm, A., Lopez, R., Thompson, J.D., Gibson, T.J. & Higgins, D.G. (2007) Clustal W and Clustal X Version 2.0. Bioinformatics, 23, 2947–2948.
https://doi.org/10.1093/bioinformatics/btm404Layton, K.K.S., Martel, A.L. & Hebert, P.D. (2014) Patterns of DNA Barcode Variation in Canadian Marine Molluscs. Plose One, 9 (4), e95003.
https://doi.org/10.1371/journal.pone.0095003Locard, A. (1898) Expéditions scientifiques du Travailleur et du Talisman pendant les années 1880, 1881, 1882, 1883. Mollusques Testacés, Part 2. Masson, Paris, 515 pp.
Numanmi, H. (1996) Taxonomic study on Antarctic gastropods collected by Japanese Antarctic Research Expeditions. Memoirs of National Institute of Polar Research, Series E, 39, 1–245.
Okutani, T., Sasaki, T. & Tsuchida, S. (2000) Two additional new species to gastropod fauna of chemosynthetic site on North Knoll of Iheya Ridge, Okinawa Trough. Venus, 59 (4), 267–275.
Okutani, T., Tsuchida, E. & Fujikura, K. (1992) Five bathyal gastropods living within or near the Calyptogena-community of the Hatsushima Islet, Sagami Bay. Venus, 51, 137–148.
Phipps, C.J. (1774) A voyage towards the North Pole undertaken by H.M. command 1773. W. Bowyer and J. Nichols, London, 253 pp.
Ponder, W.F. & Lindberg, D.R. (1997) Towards a phylogeny of gastropod molluscs: an analysis using morphological characters. Zoological Journal of the Linnean Society, 119, 83–265.
https://doi.org/10.1111/j.1096-3642.1997.tb00137.xRafinesque, G.S. (1815) Analyse de la nature ou tableau de l'univers et des corps organisés. Aux dépens de l'auteur, Palerme, 223 pp.
https://doi.org/10.5962/bhl.title.106607Salvini-Plawen, L. (1980) A reconsideration of systematic in the Mollusca (Phylogeny and higher classification). Malacologia, 19 (2), 249–278.
Simone, L.R.L. & Birman, A. (2006) Two new species of the genus Margarites (Vetigastropoda: Trochidae) from Brazil. Novapex, 7, 13–16.
Tamura, K., Stecher, G., Peterson, D., Filipski, A. & Kumar, S. (2013) MEGA6: Molecular Evolutionary Genetics Analysis Version 6.0. Molecular Biology and Evolution, 30, 2725–2729.
https://doi.org/10.1093/molbev/mst197Thiele, J. (1924). Revision des Systems der Trochacea. Mitteilungen aus dem Zoologischen Museum in Berlin, 11, 47–74.
https://doi.org/10.1002/mmnz.4830110104Vilvens, C. & Sellanes, J. (2006) Descriptions of Otukaia crustulum new species (Gastropoda: Trochoidea: Calliostomatidae) and Margarites huloti new species (Gastropoda: Trochoidea: Trochidae) from a methane seep area off Chile. The Nautilus, 120 (1), 15–20.
Warén, A. (1990) Ontogenetic changes in the trochoidean (Archaeogastropoda) radula, with some phylogenetic interpretations. Zoologica Scripta, 19 (2), 179–187.
https://doi.org/10.1111/j.1463-6409.1990.tb00253.xWarén, A. & Bouchet, P. (1989) New gastropods from East Pacific hydrothermal vents. Zoologica Scripta, 18 (1), 67–102.
https://doi.org/10.1111/j.1463-6409.1989.tb00124.xWilliams, S.T., Karube, S. & Ozawa, T. (2008) Molecular systematics of Vetigastropoda: Trochidae, Turbinidae and Trochoidea redefined. Zoologica Scripta, 37 (5), 483–506.
https://doi.org/10.1111/j.1463-6409.2008.00341.xWilliams, S.T. (2012) Advances in molecular systematics of the vetigastropod superfamily Trochoidea. Zoologica Scripta, 41 (6), 571–595.
https://doi.org/10.1111/j.1463-6409.2012.00552.xZhang, S.P., Zhang, S.Q. & Wei, P. (2016) Bayerotrochus delicatus, a new species of pleurotomariid from Yap Seamount, near Palau, Western Pacific (Gastropoda: Pleurotomariidae). Zootaxa, 4161 (2), 252–260.
https://doi.org/10.11646/zootaxa.4161.2.7