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

Yasuhide Nakamura, Rei Somiya, Noritoshi Suzuki, Mitsuko Hidaka-Umetsu, Atsushi Yamaguchi, Dhugal J. Lindsay

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


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).

Original languageEnglish
Pages (from-to)95-103
Number of pages9
JournalPlankton and Benthos Research
Issue number2
Publication statusPublished - 2017
Externally publishedYes


  • Phaeodaria
  • Protist
  • Radiolaria
  • VPR
  • Zooplankton

ASJC Scopus subject areas

  • Oceanography
  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Aquatic Science


Dive into the research topics of 'Optics-based surveys of large unicellular zooplankton: A case study on radiolarians and phaeodarians'. Together they form a unique fingerprint.

Cite this