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Susumu Ohtsuka

Susumu Ohtsuka

Susumu Ohtsuka publication distribution in Ecology and Evolution in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Ecology and Evolution in 2026. The highlighted bar marks where Susumu Ohtsuka sits on this spectrum.

37–41 publications: 2 scientists 42–46 publications: 9 scientists 47–51 publications: 10 scientists 52–56 publications: 31 scientists 57–61 publications: 56 scientists 62–66 publications: 91 scientists 67–71 publications: 92 scientists 72–76 publications: 127 scientists 77–81 publications: 173 scientists 82–86 publications: 236 scientists 87–91 publications: 227 scientists 92–96 publications: 240 scientists 97–101 publications: 333 scientists 102–106 publications: 280 scientists 107–111 publications: 300 scientists 112–116 publications: 285 scientists 117–121 publications: 305 scientists 122–126 publications: 287 scientists 127–131 publications: 278 scientists 132–136 publications: 289 scientists 137–141 publications: 273 scientists 142–146 publications: 262 scientists 147–151 publications: 246 scientists 152–156 publications: 235 scientists 157–161 publications: 205 scientists 162–166 publications: 199 scientists 167–171 publications: 174 scientists 172–176 publications: 164 scientists 177–181 publications: 173 scientists 182–186 publications: 189 scientists 187–191 publications: 170 scientists 192–196 publications: 139 scientists 197–201 publications: 128 scientists 202–206 publications: 117 scientists 207–211 publications: 115 scientists 212–216 publications: 107 scientists 217–221 publications: 124 scientists 222–226 publications: 81 scientists 227–231 publications: 82 scientists 232–236 publications: 85 scientists 237–241 publications: 75 scientists 242–246 publications: 66 scientists 247–251 publications: 81 scientists 252–256 publications: 69 scientists 257–261 publications: 70 scientists 262–266 publications: 55 scientists 267–271 publications: 64 scientists 272–276 publications: 49 scientists 277–281 publications: 48 scientists 282–286 publications: 44 scientists 287–291 publications: 45 scientists 292–296 publications: 36 scientists 297–301 publications: 39 scientists 302–306 publications: 38 scientists 307–311 publications: 30 scientists 312–316 publications: 34 scientists 317–321 publications: 25 scientists 322–326 publications: 22 scientists 327–331 publications: 28 scientists 332–336 publications: 30 scientists 337–341 publications: 22 scientists 342–346 publications: 30 scientists 347–351 publications: 26 scientists 352–356 publications: 22 scientists 357–361 publications: 29 scientists 362–366 publications: 21 scientists 367–371 publications: 12 scientists 372–376 publications: 18 scientists 377–381 publications: 17 scientists 382–386 publications: 13 scientists 387–391 publications: 21 scientists 392–396 publications: 13 scientists 397–401 publications: 10 scientists 402–406 publications: 15 scientists 407–411 publications: 8 scientists 412–416 publications: 9 scientists 417–421 publications: 8 scientists 422–426 publications: 4 scientists 427–431 publications: 10 scientists 432–436 publications: 10 scientists 437–441 publications: 5 scientists 442–446 publications: 4 scientists 447–451 publications: 10 scientists 452–456 publications: 2 scientists 457–461 publications: 4 scientists 462–466 publications: 7 scientists 467–471 publications: 7 scientists 472–476 publications: 6 scientists 477–481 publications: 6 scientists 482–486 publications: 3 scientists 487–491 publications: 3 scientists 492–496 publications: 4 scientists 497–501 publications: 4 scientists 502–506 publications: 8 scientists 507–511 publications: 5 scientists 512–516 publications: 4 scientists 517–521 publications: 5 scientists 522–526 publications: 4 scientists 527–530 publications: 5 scientists 531+ publications: 100 scientists
37 publications 531+

The last bar groups every scientist with 531 publications or more.

Susumu Ohtsuka D-index placement in Ecology and Evolution in 2026

The chart shows the D-index (discipline H-index) distribution of Ecology and Evolution scientists ranked by Research.com in 2026. The highlighted bar marks where Susumu Ohtsuka sits on this spectrum.

30 D-Index: 95 scientists 31 D-Index: 123 scientists 32 D-Index: 191 scientists 33 D-Index: 245 scientists 34 D-Index: 252 scientists 35 D-Index: 244 scientists 36 D-Index: 249 scientists 37 D-Index: 244 scientists 38 D-Index: 254 scientists 39 D-Index: 254 scientists 40 D-Index: 280 scientists 41 D-Index: 274 scientists 42 D-Index: 266 scientists 43 D-Index: 233 scientists 44 D-Index: 248 scientists 45 D-Index: 208 scientists 46 D-Index: 201 scientists 47 D-Index: 213 scientists 48 D-Index: 207 scientists 49 D-Index: 172 scientists 50 D-Index: 209 scientists 51 D-Index: 199 scientists 52 D-Index: 153 scientists 53 D-Index: 169 scientists 54 D-Index: 163 scientists 55 D-Index: 148 scientists 56 D-Index: 120 scientists 57 D-Index: 146 scientists 58 D-Index: 137 scientists 59 D-Index: 140 scientists 60 D-Index: 104 scientists 61 D-Index: 119 scientists 62 D-Index: 118 scientists 63 D-Index: 99 scientists 64 D-Index: 77 scientists 65 D-Index: 100 scientists 66 D-Index: 86 scientists 67 D-Index: 83 scientists 68 D-Index: 75 scientists 69 D-Index: 94 scientists 70 D-Index: 57 scientists 71 D-Index: 68 scientists 72 D-Index: 59 scientists 73 D-Index: 63 scientists 74 D-Index: 66 scientists 75 D-Index: 60 scientists 76 D-Index: 42 scientists 77 D-Index: 49 scientists 78 D-Index: 39 scientists 79 D-Index: 37 scientists 80 D-Index: 43 scientists 81 D-Index: 41 scientists 82 D-Index: 45 scientists 83 D-Index: 34 scientists 84 D-Index: 40 scientists 85 D-Index: 35 scientists 86 D-Index: 55 scientists 87 D-Index: 24 scientists 88 D-Index: 24 scientists 89 D-Index: 30 scientists 90 D-Index: 23 scientists 91 D-Index: 25 scientists 92 D-Index: 27 scientists 93 D-Index: 27 scientists 94 D-Index: 13 scientists 95 D-Index: 23 scientists 96 D-Index: 12 scientists 97 D-Index: 14 scientists 98 D-Index: 19 scientists 99 D-Index: 16 scientists 100 D-Index: 14 scientists 101 D-Index: 5 scientists 102 D-Index: 21 scientists 103 D-Index: 16 scientists 104 D-Index: 10 scientists 105 D-Index: 7 scientists 106 D-Index: 7 scientists 107 D-Index: 7 scientists 108 D-Index: 6 scientists 109 D-Index: 9 scientists 110 D-Index: 11 scientists 111 D-Index: 12 scientists 112 D-Index: 9 scientists 113 D-Index: 7 scientists 114 D-Index: 3 scientists 115 D-Index: 8 scientists 116 D-Index: 5 scientists 117 D-Index: 11 scientists 118 D-Index: 4 scientists 119 D-Index: 2 scientists 120 D-Index: 5 scientists 121+ D-Index: 100 scientists
30 D-Index 121+

The last bar groups every scientist with 121 D-Index or more.

Overview

Susumu Ohtsuka is affiliated with Hiroshima University in Japan and has contributed to research primarily in the fields of Environmental Science and Earth and Planetary Sciences. Their work spans several subfields including Ecology, Oceanography, Molecular Biology, Genetics, and Paleontology.

Their research topics focus largely on Parasite Biology and Host Interactions, Marine Biology and Ecology Research, Coral and Marine Ecosystems Studies, Identification and Quantification in Food, Marine Invertebrate Physiology and Ecology, Genetic Diversity and Population Structure, and Microbial Community Ecology and Physiology.

Ohtsuka has published in a variety of scientific venues, with frequent contributions to:

  • Plankton and Benthos Research
  • Zootaxa
  • ZooKeys
  • Scientific Reports
  • Biodiversity Data Journal

Some recent papers include:

  • Discovery of the fish host of the 'planktonic' caligid Caligus undulatus Shen & Li, 1959 (Crustacea: Copepoda: Siphonostomatoida), 2020, Biodiversity Data Journal
  • Antiparasitic potential of Nephrolepis biserrata methanol extract against the parasitic leech Zeylanicobdella arugamensis (Hirudinea) and LC-QTOF analysis, 2020, Scientific Reports
  • Microsclerodermins N and O, cytotoxic cyclic peptides containing a p-ethoxyphenyl moiety from a deep-sea marine sponge Pachastrella sp., 2020, Tetrahedron
  • Exploring evolutionary trends within the Pennellidae (Copepoda: Siphonostomatoida) using molecular data, 2022, Systematic Parasitology
  • Are We Ready to Get Rid of the Terms "Chalimus" and "Preadult" in the Caligid (Crustacea: Copepoda: Caligidae) Life Cycle Nomenclature?, 2023, Pathogens

Frequent collaborators in their research include:

  • Yusuke Kondo
  • Sota Komeda
  • Balu Alagar Venmathi Maran
  • Panakkool Thamban Aneesh
  • Kenta Adachi

Best Publications

  • Sexual dimorphism in calanoid copepods: morphology and function

    Susumu Ohtsuka;Rony Huys

  • Species of the parasitic genus Duboscquella are members of the enigmatic Marine Alveolate Group I.

    Ai Harada;Susumu Ohtsuka;Takeo Horiguchi

  • Introduction of the Asian copepods Acartiella sinensis, Tortanus dextrilobatus (Copepoda : Calanoida), and Limnoithona tetraspina (Copepoda : Cyclopoida) to the San Francisco Estuary, California, USA

    James J. Orsi;Susumu Ohtsuka

  • Attachment and Feeding of Pelagic Copepods on Larvacean Houses

    Susumu Ohtsuka;Nobutaka Kubo;Masaki Okada;Kenji Gushima

  • Symbionts of marine medusae and ctenophores

    Susumu Ohtsuka;Kazuhiko Koike;Dhugal Lindsay;Jun Nishikawa

  • In situ feeding habits of Oncaea (Copepoda: Poecilostomatoida) from the upper 250 m of the central Red Sea, with special reference to consumption of appendicularian houses

    Susumu Ohtsuka;Ruth Bottger-Schnack;Masaki Okada;Takashi Onbé

  • Sem Observation of the Nauplius of Monstrilla Hamatapex, New Species, from Japan and an Example of Upgraded Descriptive Standards for Monstrilloid Copepods

    Mark J. Grygier;Susumu Ohtsuka

  • Evolution of the bomolochiform superfamily complex (Copepoda: Cyclopoida): New insights from ssrDNA and morphology, and origin of umazuracolids from polychaete-infesting ancestors rejected

    Rony Huys;Farrah Fatih;Susumu Ohtsuka;Julia Llewellyn-Hughes

  • Specialized feeding mechanism in the pelagic copepod genus Heterorhabdus (Calanoida: Heterorhabdidae), with special reference to the mandibular tooth and labral glands

    S. Nishida;S. Ohtsuka

  • Phylogenetic relationships between arietellid genera (Copepoda: Calanoida), with the establishment of three new genera

    S Ohtsuka;G A Boxshall;H S J Roe

  • Relationship between mouthpart structures and in situ feeding habits of species of the family Pontellidae (Copepoda: Calanoida)

    S. Ohtsuka;T. Onbé

  • Cladistic analysis of the calanoid Copepoda

    Janet M. Bradford-Grieve;Geoff A. Boxshall;Shane T. Ahyong;Shane T. Ahyong;Susumu Ohtsuka

  • Records of Caligus (Crustacea: Copepoda: Caligidae) from Marine Fish Cultured in Floating Cages in Malaysia with a Redescription of the Male of Caligus longipedis Bassett-Smith, 1898

    B. A. Venmathi Maran;Leong Tak Seng;Susumu Ohtsuka;Kazuya Nagasawa

  • Detection of tetrodotoxin (TTX) from two copepods infecting the grass puffer Takifugu niphobles: TTX attracting the parasites?

    Katsutoshi Ito;Shinya Okabe;Manabu Asakawa;Kentaro Bessho

  • Morphology and host-specificity of the apostome ciliate Vampyrophrya pelagica infecting pelagic copepods in the Seto Inland Sea, Japan

    Susumu Ohtsuka;Mariko Hora;Toshinobu Suzaki;Mikihiko Arikawa

  • Description of two new species of Neotachidius Shen & Tai, 1963 (Copepoda, Harpacticoida, Tachidiidae) from Korean brackish waters and proposal of a new genus for Tachidius (Tachidius) vicinospinalis Shen & Tai, 1964

    Rony Huys;Susumu Ohtsuka;Sophie Conroy‐Dalton;Yoshiaki Kikuchi

  • The caligid life cycle: new evidence from Lepeophtheirus elegans reconciles the cycles of Caligus and Lepeophtheirus (Copepoda: Caligidae)

    Balu Alagar Venmathi Maran;Seong Yong Moon;Susumu Ohtsuka;Sung-Yong Oh

  • A new species of the genus Rhachotropis from off Amamioshima Island, northwestern Pacific (Crustacea: Amphipoda: Eusiridae).

    Masakuni Okazaki;Susumu Ohtsuka;K O Tomikawa

  • New records of six deep-sea caridean shrimps (Crustacea: Decapoda) from the Ryukyu Islands and its adjacent waters, southwestern Japan.

    Tomoyuki Komai;Susumu Ohtsuka;Shuhei Yamaguchi;Kazumitsu Nakaguchi

  • Developmental stages and growth of Pseudocaligus fugu Yamaguti, 1936 (Copepoda: Siphonostomatoida: Caligidae) host-specific to Puffer

    Susumu Ohtsuka;Ikuo Takami;B. A. Venmathi Maran;Kazuo Ogawa

Frequent Co-Authors

Rony Huys
Rony Huys Natural History Museum
Atsushi Yamaguchi
Atsushi Yamaguchi Tohoku University
Shane T. Ahyong
Shane T. Ahyong Australian Museum
Naohiko Ohkouchi
Naohiko Ohkouchi Japan Agency for Marine-Earth Science and Technology
Nanako O. Ogawa
Nanako O. Ogawa Japan Agency for Marine-Earth Science and Technology
Shigeki Matsunaga
Shigeki Matsunaga Kyoto University
Tamao Noguchi
Tamao Noguchi Nagasaki University
Toshihiro Nakai
Toshihiro Nakai Hiroshima University
Hiroshi Itoh
Hiroshi Itoh Yamaguchi University
Minoru Yoshida
Minoru Yoshida University of Tokyo

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