Keiichi KAKUI Ph.D.
Faculty of Science, Hokkaido University, Japan

Research Fields
1. Biology of Tanaidacea (Crustacea: Malacostraca: Peracarida)
- taxonomy, phylogeny, reproductive biology, morphology, evolution, etc.
2. Taxonomy and phylogeny of invertebrates
- crustaceans, nemerteans, trematodes, entoprocts, feather stars, etc.

Education and Career
2002Apr2006Mar B.c., Hokkaido Univ., Japan (Supervisors: SF Mawatari & H Kajihara)
2006Apr2008Mar M.c., Hokkaido Univ., Japan (Supervisors: SF Mawatari & H Kajihara)
2008Apr2011Mar D.c., Hokkaido Univ., Japan (Supervisors: SF Mawatari, H Katakura, & H Kajihara)
2010Apr2011Mar JSPS DC2, Hokkaido Univ., Japan (Supervisors: H Katakura & H Kajihara)
2011Apr2012Mar JSPS PD (DC2 status-change), Hokkaido Univ., Japan (Supervisors: H Katakura & H Kajihara)
2012Apr2015Mar Researcher, Hokkaido Univ., Japan (Supervisor: MH Dick)
2015Apr Lecturer, Hokkaido Univ., Japan

Papers (peer-reviewed)
  1. Kakui K, Kajihara H, Mawatari SF (2007) Two new sphyrapodid species (Crustacea: Tanaidacea: Apseudomorpha) from southwestern Japan. Zootaxa 1563: 37–54.
  2. Kakui K, Kajihara H, Mawatari SF (2010) A new species of Nesotanais Shiino, 1968 (Crustacea: Tanaidacea) from Japan, with a key to species and a note on male chelipeds. ZooKeys 33: 1–17.
  3. Tomikawa K, Kakui K, Yamasaki H (2010) A new species of Psammogammarus (Amphipoda: Melitidae) from Kuchinoerabu Island, Japan, with a note on its feeding habits. Zoological Science 27: 615–626.
  4. Hiruta SF, Kakui K (2010) Digital illustration techniques using graphics software. TAXA, Proceedings of the Japanese Society of Systematic Zoology 29: 19–30. [in Japanese with English Abstract]
  5. Kakui K, Kajihara H (2011) Pseudosphyrapus cuspidiger sp. nov. from the Nansei Islands, Japan, with a supplementary description of Kudinopasternakia balanorostrata Kakui, Kajihara and Mawatari, 2007 (Crustacea: Tanaidacea: Apseudomorpha: Sphyrapodidae). In: Komai T, Komatsu H (Eds.) New Crustaceans of Japan 2. Bulletin of the National Museum of Nature and Science Supplement 5: 53–70.
  6. Shimomura M, Kakui K (2011) A new species of the genus Ingolfiella Hansen, 1903 (Peracarida, Amphipoda) from Ogasawara Islands, southern Japan. Crustaceana 84: 543–551.
  7. Kakui K, Katoh T, Hiruta SF, Kobayashi N, Kajihara H (2011) Molecular systematics of Tanaidacea (Crustacea: Peracarida) based on 18S sequence data, with an amendment of suborder/superfamily-level classification. Zoological Science 28: 749–757.
  8. Kakui K, Kobayashi N, Kajihara H (2012) Phylogenetic position of Arctotanais in the suborder Tanaidomorpha (Peracarida: Tanaidacea). Journal of Crustacean Biology 32: 127–139.
  9. Kakui K, Angsupanich S (2012) Birdotanais songkhlaensis, a new genus and species of Nototanaidae (Crustacea: Tanaidacea) from Thailand. Raffles Bulletin of Zoology 60: 421–432.
  10. Shimomura M, Kakui K (2012) A new species of Stegidotea Poore, 1985 (Isopoda: Chaetillidae) from Japan. Crustaceana Monographs 17: 303–314.
  11. Shimada D, Kakui K, Kajihara H (2012) A new species of deep-sea nematode, Micoletzkyia mawatarii sp. nov. (Nematoda: Enoplida: Phanodermatidae) from northern Japan. Species Diversity 17: 221–226.
  12. Uyeno D, Kakui K, Nagasawa K (2013) New record of Cardiodectes medusaeus (Wilson, 1908) (Copepoda: Siphonostomatoida: Pennellidae) from a stranded pearly lanternfish, Myctophum nitidulum Garman (Myctophiformes: Myctophidae) from the Ryukyu Islands, southern Japan. The Biological Magazine Okinawa 51: 67–72. [in Japanese with English abstract]
  13. Kakui K, Hiruta C (2013) Selfing in a malacostracan crustacean: why a tanaidacean but not decapods. Naturwissenschaften 100: 891–894.
  14. Kakui K, Angsupanich S (2013) Description of three species of Halmyrapseudes (Crustacea: Tanaidacea: Parapseudidae), with a discussion of biogeography. Zootaxa 3736: 345–367.
  15. Kakui K, Yamasaki H (2013) Nototanaids (Crustacea: Tanaidacea) from Japan, with the description of a new species of Nototanoides. Species Diversity 18: 245–254.
  16. Kakui K, Hiruta C (2014) Diverse pereopodal secretory systems implicated in thread production in an apseudomorph tanaidacean crustacean. Journal of Morphology 275: 1041–1052.
  17. Kakui K (2014) A novel transmission pathway: first report of a larval trematode in a tanaidacean crustacean. Fauna Ryukyuana 17: 13–22.
  18. Kohtsuka H, Kakui K, Kajihara H (2014) Northernmost records of Antedon serrata A. H. Clark from Hokkaido. Bulletin of the Biogeographical Society of Japan 69: 185–188 [in Japanese with English abstract]
  19. Kakui K, Kohtsuka H (2015) Two new shallow-water species of Agathotanais (Crustacea: Tanaidacea) from Japan. Species Diversity 20: 45–58.
  20. Kajihara H, Tomioka S, Kakui K, Iseto T (2015a) Phylogenetic position of the queer, backward-bent entoproct Loxosoma axisadversum (Entoprocta: Solitaria: Loxosomatidae). Species Diversity 20: 83–88.
  21. Kakui K, Naruse T (2015) Indoapseudes bamberi sp. nov. (Crustacea: Tanaidacea: Pagurapseudidae: Hodometricinae) from Iriomote Island, Ryukyu Islands, southwestern Japan. Zootaxa 3995: 138–148.
  22. Shimada D, Kakui K (2015) First record of the free-living marine nematode Deontostoma magnificum (Timm, 1951) Platonova, 1962 (Nematoda: Leptosomatidae) from Japan. Nematological Research 45: 13–18.
  23. Nakano H, Kakui K, Kajihara H, Shimomura M, Jimi N, Tomioka S, Tanaka H, Yamasaki H, Tanaka M, Izumi T, Okanishi M, Yamada Y, Shinagawa H, Sato T, Tsuchiya Y, Omori A, Sekifuji M, Kohtsuka H (2015) JAMBIO Coastal Organism Joint Surveys reveals undiscovered biodiversity around Sagami Bay. Regional Studies in Marine Science 2 supplement: 7781.
  24. Uyeno D, Kakui K (2015) The first record of a species of Clausiidae (Copepoda: Cyclopoida) from Japanese waters, with the proposal of a new genus. Species Diversity 20: 153–158.
  25. Kajihara H, Kakui K, Yamasaki H, Hiruta SF (2015b) Tubulanus tamias sp. nov. (Nemertea: Palaeonemertea) with two different types of epidermal eyes. Zoological Science 32: 596604.
  26. Kakui K (2016) Descriptions of two new species of Rhizorhina Hansen, 1892 (Copepoda: Siphonostomatoida: Nicothoidae) parasitic on tanaidacean crustaceans, with a note on their phylogenetic position. Systematic Parasitology 93: 5768.
  27. Kaji T, Kakui K, Miyazaki N, Miura K, Palmer AR (2016) Mesoscale morphology at nanoscale resolution: serial block-face scanning electron microscopy reveals fine 3D detail of a novel silk spinneret system in a tube-building tanaid crustacean. Frontiers in Zoology 13: 14. doi:10.1186/s12983-016-0146-0
  28. McClain CR, Barry JP, Eernisse D, Horton T, Judge J, Kakui K, Mah CL, Wáren A (2016) Multiple processes generate productivity-diversity relationships in experimental wood-fall communities. Ecology 97: 885898.
  29. Hiruta SF, Kakui K (2016) Three new brackish-water thalassocypridine species (Crustacea: Ostracoda: Paracyprididae) from the Ryukyu Islands, southwestern Japan. Zootaxa 4169: 515–539.
  30. Tomioka S, Kondoh T, Sato-Okoshi W, Ito K, Kakui K, Kajihara H (2016) Cosmopolitan or cryptic species?―A case study of Capitella teleta (Annelida: Capitellidae). Zoological Science 33: 545–554.
  31. Narahara-Nakano Y, Kakui K, Tomikawa K (2016) Opisa takafuminakanoi, a new species of Opisidae from Hokkaido, Japan (Crustacea: Amphipoda). Zootaxa 4200: 335–339.
  32. Kajihara H, Kakui K (2016) An overview of recent marine-biodiversity research in Japan. pp. 25–45. In: Motokawa M, Kajihara H (eds) Species Diversity of Animals in Japan, Springer, Berlin. invited
  33. Kakui K (2016) Review of the taxonomy, diversity, ecology, and other biological aspects of Order Tanaidacea from Japan and surrounding waters. pp. 603–627. In: Motokawa M, Kajihara H (eds) Species Diversity of Animals in Japan, Springer, Berlin. invited
  34. Jimi N, Tsujimoto M, Watanabe K, Kakui K, Kajihara H (2017) A new species and the shallowest record of Flabegraviera Salazar-Vallejo, 2012 (Annelida: Flabelligeridae) from Antarctica. Zootaxa 4221: 477–485.
  35. Komai T, Marin I, Kakui K (2017) Rediscovery and redescription of the abyssal squat lobster Munidopsis petalorhyncha Baba, 2005 (Crustacea: Decapoda: Munidopsidae) from the Northwest Pacific. Zootaxa 4226: 93–102.
  36. Kakui K, Suzuki A, Nakano H, Kohtsuka H (2017a) Habitat of a tanaidacean Apseudes nipponicus Shiino, 1937. Bulletin of the Kitakyushu Museum of Natural History and Human History Series A (Natural History) 15: 1–3.
  37. Kakui K, Hayakawa Y, Katakura H (2017b) Difference in size at maturity in annual and overwintering generations in the tanaidacean Zeuxo sp. in Oshoro Bay, Hokkaido, Japan. Zoological Science 34: 129136.
  38. Kakui K, Shimada D (2017) A new species of Tanaopsis (Crustacea: Tanaidacea) from Japan, with remarks on the functions of serial ridges and grooves on the appendages. Zootaxa 4282: 324–336.
  39. Bayartogtokh B, Shimano S, Hagino W, Kakui K, Hiruta SF, Hartini S (2017) Morphology of a newly recorded species, Eremaeozetes octomaculatus Hammer, 1973 from Indonesia (Acari: Oribatida: Eremaeozetidae), with its genetic information. International Journal of Acarology 43: 444–449.
Papers (not peer-reviewed; selected)
  1. Kakui K, Tomioka S, Yamasaki H (2014) Tanaidaceans from Rishiri Island (Crustacea: Peracarida). Rishiri Studies 33: 7–12. [in Japanese with English abstract]
  2. Kakui K (2015) First report of Zeuxo sp. (Crustacea: Tanaidacea) as prey for the forktongue goby, Chaenogobius annularis Gill, 1859. Rishiri Studies 34: 1–6. [in Japanese with English abstract and caption]
  3. Kakui K (2016) Diversity of sexual and reproductive systems in Tanaidacea. Cancer 25: 131136. [in Japanese]
Grants etc.
2010Apr2012Mar Japan Society for Promotion of Science (JSPS): Grant-in-Aid (no. 10J01119 or 22·1119)
2012Oct2012Oct Zoological Society of Japan: Kawaguchi Award (Overseas travel support for international meeting)
2012Apr2014Mar Research Institute of Marine Invertebrate Foundation, Japan: Research grant
2014Apr2015Mar Japanese Association for Marine Biology (JAMBIO): Research grant [as co-applicant]
2014Apr2015Mar University of Ryukyus, Japan: Research grant for collaboration research
2014Apr2015Mar Japan Science Society: Sasakawa Scientific Research Grant
2015Apr2016Mar Fujiwara Natural History Public Interest Incorporated Foundation, Japan: Research grant
2016Apr–2017Mar National Institute of Polar Research, Japan: Meeting support
2016Apr2017Mar University of Ryukyus, Japan: Research grant for collaboration research [as co-applicant]
2016Apr2019Mar National Institute of Polar Research, Japan: General collaboration project [as co-applicant]
2016Apr2019Mar Japan Society for Promotion of Science (JSPS)Grant-in-Aid for Young Scientists (B)
2017Apr–2018Mar National Institute of Polar Research, Japan: Meeting support

Committee activities
2016Jan2017Dec Councilor, Japanese Society of Systematic Zoology, Japan

Editorial activities
2016Jan–2017Dec Associate Editor, Species Diversity (Japanese Society of Systematic Zoology, Japan)
2016May–2018Apr Associate Editor, Japanese Journal of Benthology (Japanese Association of Benthology, Japan)

Reviewing Experience
CBM-Cahiers de Biologie Marine
Fauna Ryukyuana × 2
Japanese Journal of Benthology
Journal of Natural History
Journal of the Marine Biological Association of the United Kingdom × 2
Marine Biology Research
Plankton and Benthos Research
Polish Polar Research
Species Diversity
Systematics and Biodiversity
Zoological Journal of the Linnean Society
Zoological Science × 3
Zoologica Scripta × 2
Zootaxa × 10