Optics-based surveys of large unicellular zooplankton: a case study on radiolarians and phaeodarians

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  • Nakamura Yasuhide
    Department of Botany, National Museum of Nature and Science
  • Somiya Rei
    Graduate School of Fisheries and Environmental Sciences, Nagasaki University
  • Suzuki Noritoshi
    Department of Earth Science, Graduate School of Science, Tohoku University
  • Hidaka-Umetsu Mitsuko
    Research and Development (R&D) Center for Submarine Resources, Japan Agency for Marine-Earth Science and Technology (JAMSTEC) School of Marine Biosciences, Kitasato University
  • Yamaguchi Atsushi
    Graduate School of Fisheries Sciences, Hokkaido University
  • Lindsay Dhugal J.
    Research and Development (R&D) Center for Submarine Resources, Japan Agency for Marine-Earth Science and Technology (JAMSTEC) School of Marine Biosciences, Kitasato University

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  • Optics-based surveys of large unicellular zooplankton: a case study on radiolarians and paederines

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Optics-based surveys for large unicellular zooplankton were carried out in five different oceanic areas. New identification criteria, in which “radiolarian-like plankton” are categorized into nine different groups, are proposed for future optics-based surveys. The autonomous visual plankton recorder (A-VPR) captured 65 images of radiolarians (three orders: Acantharia, Spumellaria and Collodaria) and 117 phaeodarians (four taxa: Aulacanthidae, Phaeosphaerida, Tuscaroridae and Coelodendridae). Colonies were observed for one radiolarian order (Collodaria) and three phaeodarian taxa (Phaeosphaerida, Tuscaroridae and Coelodendridae). The rest of the radiolarian orders (Taxopodia and Nassellaria) and the other phaeodarian taxa were not detected because of their small cell size (< ca. 400 µm).

Journal

  • Plankton and Benthos Research

    Plankton and Benthos Research 12 (2), 95-103, 2017

    The Plankton Society of Japan, The Japanese Association of Benthology

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