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The botanical magazine = Shokubutsu-gaku-zasshi

, Volume 96, Issue 4, pp 351–358 | Cite as

Scrippsiella hexapraecingula sp. nov. (Dinophyceae), a tida pool dinoflagellate from the Northwest Pacific

  • Takeo Horiguchi
  • Mitsuo Chihara
Article

Abstract

Specimens of dinoflagellate collected in tide pools along the Pacific coast of central and southern Japan are described as a new species,Scrippsiella hexapraecingula Horiguchi et Chihara, of the Peridiniaceae (Class Dinophyceae). The plate formula is pp, x, 4′, 3a, 6″, 6c, 5‴, 2″" and, 5s, the same as that of other species ofScrippsiella, except in lacking one precingular plate. The genus must be emended, therefore, as having either six or seven precingular plates.

This dinoflagellate migrates diurnally. In the morning motile cells are released from non-motile cells attached to the substrate and in the evening the motile cells swim down to settle on the bottom of the tide pool. Attached non-motile cells form either motile mono- or bispores. Sexual reproduction was not observed.

Key words

Dinophyceae Diurnal migration Peridiniaceae Scrippsiella hexapraecingula sp. nov. Taxonomy of dinoflagellate 

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Copyright information

© The Botanical Society of Japan 1983

Authors and Affiliations

  • Takeo Horiguchi
    • 1
  • Mitsuo Chihara
    • 1
  1. 1.Institute of Biological SciencesUniversity of TsukubaIbaraki

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