was a Japanese zoologist. He published over 200 scientific articles on marine animals such as chaetognaths, ctenophores, and tunicates. He was Professor of Zoology at Kyoto University working at the Seto Marine Biological Laboratory in Shirahama, Japan. From 1975 to 1977, he was the Director of SMBL.Nishikawa, T. 2001. Obituary of Dr. Takasi Tokioka. Ascidian News. 50:2-3. http://depts.washington.edu/ascidian/AN50.html
Eponymous species At least a dozen species are named in his honor,Biographical Etymology of Marine Organism Names http://www.tmbl.gu.se/libdb/taxon/personetymol/petymol.tu.html including these below.
Acartia tokiokai Mori, 1942 - Copepoda Atlanta tokiokai van der Spoel & Troost, 1972 - Heteropoda Bolivina tokiokai Uchio, 1962 - Foraminifera Eudistoma tokiokai Nishikawa, 1990 - Ascidiacea Euchromadora tokiokai Wieser, 1955 - Nematoda Krohnittella tokiokai Bieri, 1974 - Chaetognatha Ophiocentrus tokiokai Irimura, 1981 - Ophiuroidea Polycarpa tokiokai Monniot & Monniot, 1996 - Ascidiacea Styela tokiokai Nishikawa, 1991 - Ascidiacea
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