title: Morphology of Gambierdiscus scabrosus sp. nov. (Gonyaulacales): a new epiphytic toxic dinoflagellate from coastal areas of Japan.
abstract: A new epiphytic dinoflagellate is described, G ambierdiscus scabrosus sp. nov., from tidal pools and rocky shores along the coastal areas of Japan. Cells are 63.2 ± 5.7 μm in depth, 58.2 ± 5.7 μm in width, and 37.3 ± 3.5 μm in length. The plate formula of G . scabrosus is Po, 4', 0a, 6'', 6c, ?s, 5''', 0p, and 2''''. Morphologically, G . scabrosus resembles G . belizeanus as follows: anterioposteriorly compressed cell shape, narrow 2'''' plate, and areolated surface. Despite this similarity, the cells of G . scabrosus can be distinguishable by the presence of the asymmetric shaped 3'' plate and the rectangular shaped 2' plate.
authors.affiliation: The United Graduate School of Agricultural Sciences, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime, 790-8566, Japan.|LAQUES (Laboratory of Aquatic Environmental Science), Faculty of Agriculture, Kochi University, 200 Otsu, Monobe, Nankoku, Kochi, 783-8502, Japan.
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Nishimura
authors.affiliation: Graduate School of Science and Engineering, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, 753-8512, Japan.
authors.forename: Shinya
authors.initials: S
authors.lastname: Sato
authors.affiliation: The United Graduate School of Agricultural Sciences, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime, 790-8566, Japan.|LAQUES (Laboratory of Aquatic Environmental Science), Faculty of Agriculture, Kochi University, 200 Otsu, Monobe, Nankoku, Kochi, 783-8502, Japan.
authors.forename: Wittaya
authors.initials: W
authors.lastname: Tawong
authors.affiliation: LAQUES (Laboratory of Aquatic Environmental Science), Faculty of Agriculture, Kochi University, 200 Otsu, Monobe, Nankoku, Kochi, 783-8502, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Sakanari
authors.affiliation: LAQUES (Laboratory of Aquatic Environmental Science), Faculty of Agriculture, Kochi University, 200 Otsu, Monobe, Nankoku, Kochi, 783-8502, Japan.
authors.forename: Haruo
authors.initials: H
authors.lastname: Yamaguchi
authors.affiliation: LAQUES (Laboratory of Aquatic Environmental Science), Faculty of Agriculture, Kochi University, 200 Otsu, Monobe, Nankoku, Kochi, 783-8502, Japan.
authors.forename: Masao
authors.initials: M
authors.lastname: Adachi
keywords: G
  
  ambierdiscus scabrosus; Japan; LM; SEM; ciguatera fish poisoning; epiphytic dinoflagellate; morphology; taxonomy