World's Best Scientists 2026 revealed!

D-Index & Metrics

Biology and Biochemistry

D-Index
50
Citations
10492
World Ranking
17533
National Ranking
1267

Naruo Nikoh publication distribution in Biology and Biochemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Biology and Biochemistry in 2026. The highlighted bar marks where Naruo Nikoh sits on this spectrum.

47–56 publications: 8 scientists 57–66 publications: 35 scientists 67–76 publications: 106 scientists 77–86 publications: 231 scientists 87–96 publications: 413 scientists 97–106 publications: 546 scientists 107–116 publications: 704 scientists 117–126 publications: 848 scientists 127–136 publications: 980 scientists 137–146 publications: 942 scientists 147–156 publications: 969 scientists 157–166 publications: 949 scientists 167–176 publications: 951 scientists 177–186 publications: 915 scientists 187–196 publications: 787 scientists 197–206 publications: 840 scientists 207–216 publications: 733 scientists 217–226 publications: 708 scientists 227–236 publications: 651 scientists 237–246 publications: 605 scientists 247–256 publications: 510 scientists 257–266 publications: 524 scientists 267–276 publications: 434 scientists 277–286 publications: 417 scientists 287–296 publications: 350 scientists 297–306 publications: 363 scientists 307–316 publications: 315 scientists 317–326 publications: 296 scientists 327–336 publications: 261 scientists 337–346 publications: 240 scientists 347–356 publications: 219 scientists 357–366 publications: 196 scientists 367–376 publications: 154 scientists 377–386 publications: 161 scientists 387–396 publications: 155 scientists 397–406 publications: 145 scientists 407–416 publications: 124 scientists 417–426 publications: 112 scientists 427–436 publications: 132 scientists 437–446 publications: 116 scientists 447–456 publications: 99 scientists 457–466 publications: 81 scientists 467–476 publications: 91 scientists 477–486 publications: 80 scientists 487–496 publications: 80 scientists 497–506 publications: 59 scientists 507–516 publications: 36 scientists 517–526 publications: 46 scientists 527–536 publications: 54 scientists 537–546 publications: 44 scientists 547–556 publications: 43 scientists 557–566 publications: 43 scientists 567–576 publications: 42 scientists 577–586 publications: 25 scientists 587–596 publications: 34 scientists 597–606 publications: 23 scientists 607–616 publications: 33 scientists 617–626 publications: 31 scientists 627–636 publications: 27 scientists 637–646 publications: 25 scientists 647–656 publications: 28 scientists 657–666 publications: 34 scientists 667–676 publications: 18 scientists 677–686 publications: 16 scientists 687–696 publications: 10 scientists 697–706 publications: 12 scientists 707–716 publications: 21 scientists 717–726 publications: 12 scientists 727–736 publications: 12 scientists 737–746 publications: 10 scientists 747–756 publications: 7 scientists 757–766 publications: 13 scientists 767–776 publications: 15 scientists 777–786 publications: 13 scientists 787–796 publications: 9 scientists 797–806 publications: 9 scientists 807–816 publications: 7 scientists 817–826 publications: 4 scientists 827–836 publications: 9 scientists 837–846 publications: 7 scientists 847–856 publications: 3 scientists 857–866 publications: 5 scientists 867–876 publications: 5 scientists 877–886 publications: 11 scientists 887–896 publications: 3 scientists 897–906 publications: 4 scientists 907–916 publications: 7 scientists 917–926 publications: 5 scientists 927–936 publications: 6 scientists 937–946 publications: 6 scientists 947–956 publications: 3 scientists 957–966 publications: 7 scientists 967–976 publications: 2 scientists 977–986 publications: 2 scientists 987–996 publications: 1 scientists 997–1,006 publications: 5 scientists 1,007–1,016 publications: 2 scientists 1,017–1,026 publications: 2 scientists 1,027 publications: 1 scientists 1,028+ publications: 100 scientists
47 publications 1,028+

This scientist: 94 publications — 4th percentile

4% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,028 publications or more.

Naruo Nikoh D-index placement in Biology and Biochemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Biology and Biochemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Naruo Nikoh sits on this spectrum.

40–41 D-Index: 80 scientists 42–43 D-Index: 183 scientists 44–45 D-Index: 316 scientists 46–47 D-Index: 504 scientists 48–49 D-Index: 718 scientists 50–51 D-Index: 899 scientists 52–53 D-Index: 1,025 scientists 54–55 D-Index: 1,149 scientists 56–57 D-Index: 1,235 scientists 58–59 D-Index: 1,253 scientists 60–61 D-Index: 1,162 scientists 62–63 D-Index: 1,130 scientists 64–65 D-Index: 1,031 scientists 66–67 D-Index: 897 scientists 68–69 D-Index: 814 scientists 70–71 D-Index: 714 scientists 72–73 D-Index: 709 scientists 74–75 D-Index: 596 scientists 76–77 D-Index: 512 scientists 78–79 D-Index: 473 scientists 80–81 D-Index: 412 scientists 82–83 D-Index: 373 scientists 84–85 D-Index: 358 scientists 86–87 D-Index: 285 scientists 88–89 D-Index: 273 scientists 90–91 D-Index: 227 scientists 92–93 D-Index: 208 scientists 94–95 D-Index: 193 scientists 96–97 D-Index: 153 scientists 98–99 D-Index: 157 scientists 100–101 D-Index: 148 scientists 102–103 D-Index: 120 scientists 104–105 D-Index: 113 scientists 106–107 D-Index: 100 scientists 108–109 D-Index: 86 scientists 110–111 D-Index: 67 scientists 112–113 D-Index: 71 scientists 114–115 D-Index: 73 scientists 116–117 D-Index: 64 scientists 118–119 D-Index: 53 scientists 120–121 D-Index: 60 scientists 122–123 D-Index: 54 scientists 124–125 D-Index: 43 scientists 126–127 D-Index: 38 scientists 128–129 D-Index: 49 scientists 130–131 D-Index: 26 scientists 132–133 D-Index: 18 scientists 134–135 D-Index: 23 scientists 136–137 D-Index: 32 scientists 138–139 D-Index: 32 scientists 140–141 D-Index: 27 scientists 142–143 D-Index: 19 scientists 144–145 D-Index: 22 scientists 146–147 D-Index: 12 scientists 148–149 D-Index: 16 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 10 scientists 154–155 D-Index: 13 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 9 scientists 162–163 D-Index: 13 scientists 164–165 D-Index: 4 scientists 166 D-Index: 4 scientists 167+ D-Index: 98 scientists
40 D-Index 167+

This scientist: 50 D-Index — 11th percentile

11% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 167 D-Index or more.

Overview

Naruo Nikoh is affiliated with The Open University of Japan. Their research primarily focuses on the Agricultural and Biological Sciences, with a strong emphasis on insect-related studies and symbiotic relationships. Their main fields of study extend into subfields such as Insect Science, Plant Science, Genetics, Horticulture, and Ecology, Evolution, Behavior and Systematics.

The scientist's work covers a range of topics including insect symbiosis and bacterial influences, entomopathogenic microorganisms in pest control, insect and arachnid ecology and behavior, cocoa and sweet potato agronomy, plant and animal studies, mycorrhizal fungi and plant interactions, and plant parasitism and resistance.

Naruo Nikoh has published in several scientific venues. The most frequent among them are:

  • bioRxiv (Cold Spring Harbor Laboratory)
  • Proceedings of the National Academy of Sciences
  • Science
  • Microbiology Resource Announcements

Recent papers authored or co-authored by Nikoh include:

  • Genome Analysis of " Candidatus Regiella insecticola" Strain TUt, Facultative Bacterial Symbiont of the Pea Aphid Acyrthosiphon pisum, 2020, Microbiology Resource Announcements
  • Host's guardian protein counters degenerative symbiont evolution, 2021, Proceedings of the National Academy of Sciences
  • Defensive fungal symbiosis on insect hindlegs, 2024, bioRxiv (Cold Spring Harbor Laboratory)
  • Defensive fungal symbiosis on insect hindlegs, 2025, Science
  • Tryptophanase disruption underlies the evolution of insect-bacterium mutualism, 2024, bioRxiv (Cold Spring Harbor Laboratory)

Frequent collaborators of Naruo Nikoh include:

  • Ryuichi Koga
  • Takema Fukatsu
  • Takahiro Hosokawa
  • Minoru Moriyama
  • Masahiko Tanahashi

Best Publications

  • Genome Sequence of the Pea Aphid Acyrthosiphon pisum

    Stephen Richards;Richard A. Gibbs;Nicole M. Gerardo;Nancy Moran

  • Strict Host-Symbiont Cospeciation and Reductive Genome Evolution in Insect Gut Bacteria

    Takahiro Hosokawa;Yoshitomo Kikuchi;Yoshitomo Kikuchi;Naruo Nikoh;Masakazu Shimada

  • Horizontal Gene Transfer from Diverse Bacteria to an Insect Genome Enables a Tripartite Nested Mealybug Symbiosis

    Filip Husnik;Naruo Nikoh;Ryuichi Koga;Laura Ross

  • Evolutionary origin of insect-Wolbachia nutritional mutualism.

    Naruo Nikoh;Takahiro Hosokawa;Minoru Moriyama;Kenshiro Oshima

  • Genome fragment of Wolbachia endosymbiont transferred to X chromosome of host insect

    Natsuko Kondo;Naruo Nikoh;Nobuyuki Ijichi;Masakazu Shimada

  • Two intracellular symbiotic bacteria from the mulberry psyllid Anomoneura mori (Insecta, Homoptera).

    Takema Fukatsu;Naruo Nikoh

  • Host-symbiont co-speciation and reductive genome evolution in gut symbiotic bacteria of acanthosomatid stinkbugs

    Yoshitomo Kikuchi;Takahiro Hosokawa;Naruo Nikoh;Xian Ying Meng

  • The secondary endosymbiotic bacterium of the pea aphid Acyrthosiphon pisum (Insecta: homoptera).

    Takema Fukatsu;Naruo Nikoh;Rena Kawai;Ryuichi Koga

  • Spiroplasma Symbiont of the Pea Aphid, Acyrthosiphon pisum (Insecta: Homoptera)

    Takema Fukatsu;Tsutomu Tsuchida;Naruo Nikoh;Ryuichi Koga

  • Interkingdom host jumping underground: phylogenetic analysis of entomoparasitic fungi of the genus cordyceps.

    Naruo Nikoh;Takema Fukatsu

  • Wolbachia genome integrated in an insect chromosome: Evolution and fate of laterally transferred endosymbiont genes

    Naruo Nikoh;Kohjiro Tanaka;Fukashi Shibata;Natsuko Kondo

  • Bacterial genes in the aphid genome: absence of functional gene transfer from Buchnera to its host.

    Naruo Nikoh;John P. McCutcheon;Toshiaki Kudo;Shin Ya Miyagishima

  • Aphids acquired symbiotic genes via lateral gene transfer

    Naruo Nikoh;Atsushi Nakabachi

  • Reductive Evolution of Bacterial Genome in Insect Gut Environment

    Naruo Nikoh;Takahiro Hosokawa;Kenshiro Oshima;Masahira Hattori

  • Insect’s intestinal organ for symbiont sorting

    Tsubasa Ohbayashi;Kazutaka Takeshita;Kazutaka Takeshita;Wataru Kitagawa;Wataru Kitagawa;Naruo Nikoh

  • Small genome symbiont underlies cuticle hardness in beetles

    Hisashi Anbutsu;Minoru Moriyama;Naruo Nikoh;Takahiro Hosokawa;Takahiro Hosokawa

  • Obligate bacterial mutualists evolving from environmental bacteria in natural insect populations.

    Takahiro Hosokawa;Yoshiko Ishii;Naruo Nikoh;Manabu Fujie

  • Endosymbiotic Microbiota of the Bamboo Pseudococcid Antonina crawii (Insecta, Homoptera)

    Takema Fukatsu;Naruo Nikoh

  • Complex endosymbiotic microbiota of the citrus psyllid Diaphorina citri (Homoptera: Psylloidea).

    Siti Subandiyah;Naruo Nikoh;Shinji Tsuyumu;Susamto Somowiyarjo

  • Symbiont-supplemented maternal investment underpinning host's ecological adaptation.

    Nahomi Kaiwa;Takahiro Hosokawa;Naruo Nikoh;Masahiko Tanahashi

Frequent Co-Authors

Takema Fukatsu
Takema Fukatsu National Institute of Advanced Industrial Science and Technology
Yoshitomo Kikuchi
Yoshitomo Kikuchi National Institute of Advanced Industrial Science and Technology
Shuji Shigenobu
Shuji Shigenobu National Institute for Basic Biology
Masahira Hattori
Masahira Hattori Waseda University
Kenshiro Oshima
Kenshiro Oshima University of Tokyo
Yoichi Kamagata
Yoichi Kamagata National Institute of Advanced Industrial Science and Technology
Bok Luel Lee
Bok Luel Lee Pusan National University
Masakazu Shimada
Masakazu Shimada University of Tokyo
Mitsuyasu Hasebe
Mitsuyasu Hasebe The Graduate University for Advanced Studies, SOKENDAI
Shin-ya Miyagishima
Shin-ya Miyagishima National Institute of Genetics

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