• Aulographis japonica sp. nov. (Phaeodaria, Aulacanthida, Aulacanthidae), an abundant zooplankton in the deep sea of the Sea of Japan

Nakamura, Yasuhide

Imai, Ichiro

Yamaguchi, Atsushi

Tuji, Akihiro

Suzuki, Noritoshi

    • © 2013 The Plankton Society of Japan
  • Other Aulographis japonica
  • Other Cercozoa
  • Other New species
  • Other Phaeodaria
  • Other The Sea of Japan
  • NDC 468
  • Zooplankton samples from the deep water of the Sea of Japan often contain yellowish semitransparent spheres (1.0–1.5 mm in diameter). We recognized these spheres as a single phaeodarian species (Cercozoa, Rhizaria) and described them as Aulographis japonica sp. nov. (family Aulacanthidae) in this paper. This species has a high abundance in the Japan Sea Proper Water (JSPW) and occasionally higher biomass than that of copepods. Molecular analysis based on 18S SSU rDNA revealed that Aulacantha scolymantha, which belongs to the same family as A. japonica, is closer to Aulosphaera trigonopa and Protocystis spp., which belong to different orders, than to the present species. The distribution of A. japonica is apparently restricted to low temperature water. Its biomass was the highest in the uppermost layer of JSPW, and this phaeodarian species was the second most important zooplankton below 250 m depth in terms of biomass among the total zooplankton groups. This is probably due to its generalist type of feeding. Considering its large biomass, A. japonica possibly plays an important role in matter cycles within the Sea of Japan.
PublisherPlankton Society of Japan : Japanese Association of Benthology
Date Issued 2013-08
NIItypejournal article
Identifier URI
    • NCID AA12130745
    • ISSN 1880-8247
    • Plankton & benthos research : a joint journal of the Plankton Society of Japan & the Japanese Association of Benthology
    8(3), 107-115