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Hiroyuki Takaoka

Hiroyuki Takaoka

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Animal Science and Veterinary 32 2085 1901 8 8 475 5551

Hiroyuki Takaoka publications per year

The chart shows the history of publications by Hiroyuki Takaoka between 1972 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Hiroyuki Takaoka published across 54 years, from 1972 to 2025, averaging 9.7 papers a year. Output peaked at 44 publications in 2020. 31 of the 522 publications appeared in the last two years.

No. of publications
10 20 30 40
Bar chart. Horizontal axis: year, 1972 to 2025. Vertical axis: number of publications, 0 to 44. Peak 44 publications in 2020. 1972: 1 publication 1973: 1 publication 1974: 1 publication 1975: 0 publications 1976: 3 publications 1977: 4 publications 1978: 2 publications 1979: 3 publications 1980: 1 publication 1981: 6 publications 1982: 6 publications 1983: 1 publication 1984: 7 publications 1985: 3 publications 1986: 4 publications 1987: 4 publications 1988: 5 publications 1989: 7 publications 1990: 5 publications 1991: 5 publications 1992: 5 publications 1993: 3 publications 1994: 5 publications 1995: 11 publications 1996: 10 publications 1997: 6 publications 1998: 3 publications 1999: 10 publications 2000: 9 publications 2001: 11 publications 2002: 4 publications 2003: 7 publications 2004: 13 publications 2005: 23 publications 2006: 17 publications 2007: 12 publications 2008: 14 publications 2009: 13 publications 2010: 20 publications 2011: 8 publications 2012: 10 publications 2013: 9 publications 2014: 12 publications 2015: 20 publications 2016: 14 publications 2017: 23 publications 2018: 18 publications 2019: 18 publications 2020: 44 publications 2021: 16 publications 2022: 15 publications 2023: 19 publications 2024: 19 publications 2025: 12 publications
1972 2025

522 publications in total across all disciplines

View publications per year as a table
Hiroyuki Takaoka: publications per year, 1972 to 2025
Year Publications
1972 1
1973 1
1974 1
1975 0
1976 3
1977 4
1978 2
1979 3
1980 1
1981 6
1982 6
1983 1
1984 7
1985 3
1986 4
1987 4
1988 5
1989 7
1990 5
1991 5
1992 5
1993 3
1994 5
1995 11
1996 10
1997 6
1998 3
1999 10
2000 9
2001 11
2002 4
2003 7
2004 13
2005 23
2006 17
2007 12
2008 14
2009 13
2010 20
2011 8
2012 10
2013 9
2014 12
2015 20
2016 14
2017 23
2018 18
2019 18
2020 44
2021 16
2022 15
2023 19
2024 19
2025 12
Total 522
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Hiroyuki Takaoka publication distribution in Animal Science and Veterinary in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Animal Science and Veterinary in 2026. The highlighted bar marks where Hiroyuki Takaoka sits on this spectrum.

No. of scientists
25 50 75 100
Bar chart with 84 bars. Horizontal axis: publications, 29–33 to 442+. Vertical axis: number of scientists, 0 to 109. Most scientists, 109, have 119–123 publications. The last bar groups every scientist with 442 publications or more. The highlighted bar, 442+ publications, is where this scientist sits. 29–33 publications: 1 scientist 34–38 publications: 6 scientists 39–43 publications: 17 scientists 44–48 publications: 23 scientists 49–53 publications: 28 scientists 54–58 publications: 44 scientists 59–63 publications: 66 scientists 64–68 publications: 75 scientists 69–73 publications: 71 scientists 74–78 publications: 85 scientists 79–83 publications: 108 scientists 84–88 publications: 105 scientists 89–93 publications: 84 scientists 94–98 publications: 103 scientists 99–103 publications: 97 scientists 104–108 publications: 95 scientists 109–113 publications: 89 scientists 114–118 publications: 88 scientists 119–123 publications: 109 scientists 124–128 publications: 93 scientists 129–133 publications: 89 scientists 134–138 publications: 95 scientists 139–143 publications: 92 scientists 144–148 publications: 80 scientists 149–153 publications: 75 scientists 154–158 publications: 74 scientists 159–163 publications: 67 scientists 164–168 publications: 53 scientists 169–173 publications: 62 scientists 174–178 publications: 63 scientists 179–183 publications: 50 scientists 184–188 publications: 55 scientists 189–193 publications: 50 scientists 194–198 publications: 27 scientists 199–203 publications: 44 scientists 204–208 publications: 31 scientists 209–213 publications: 28 scientists 214–218 publications: 38 scientists 219–223 publications: 33 scientists 224–228 publications: 36 scientists 229–233 publications: 29 scientists 234–238 publications: 35 scientists 239–243 publications: 23 scientists 244–248 publications: 24 scientists 249–253 publications: 29 scientists 254–258 publications: 28 scientists 259–263 publications: 21 scientists 264–268 publications: 25 scientists 269–273 publications: 11 scientists 274–278 publications: 18 scientists 279–283 publications: 13 scientists 284–288 publications: 18 scientists 289–293 publications: 10 scientists 294–298 publications: 12 scientists 299–303 publications: 11 scientists 304–308 publications: 15 scientists 309–313 publications: 14 scientists 314–318 publications: 14 scientists 319–323 publications: 8 scientists 324–328 publications: 8 scientists 329–333 publications: 13 scientists 334–338 publications: 14 scientists 339–343 publications: 13 scientists 344–348 publications: 10 scientists 349–353 publications: 11 scientists 354–358 publications: 5 scientists 359–363 publications: 8 scientists 364–368 publications: 8 scientists 369–373 publications: 6 scientists 374–378 publications: 7 scientists 379–383 publications: 8 scientists 384–388 publications: 3 scientists 389–393 publications: 4 scientists 394–398 publications: 5 scientists 399–403 publications: 8 scientists 404–408 publications: 5 scientists 409–413 publications: 4 scientists 414–418 publications: 3 scientists 419–423 publications: 8 scientists 424–428 publications: 5 scientists 429–433 publications: 3 scientists 434–438 publications: 5 scientists 439–441 publications: 5 scientists 442+ publications: 99 scientists
29–33 publications 442+

This scientist: 475 publications — 97th percentile

97% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 442 publications or more.

View publications distribution as a table
Number of Animal Science and Veterinary scientists by publication count, Research.com 2026 ranking edition. Based on 3,155 ranked scientists.
Publications Scientists This scientist
29–33 1
34–38 6
39–43 17
44–48 23
49–53 28
54–58 44
59–63 66
64–68 75
69–73 71
74–78 85
79–83 108
84–88 105
89–93 84
94–98 103
99–103 97
104–108 95
109–113 89
114–118 88
119–123 109
124–128 93
129–133 89
134–138 95
139–143 92
144–148 80
149–153 75
154–158 74
159–163 67
164–168 53
169–173 62
174–178 63
179–183 50
184–188 55
189–193 50
194–198 27
199–203 44
204–208 31
209–213 28
214–218 38
219–223 33
224–228 36
229–233 29
234–238 35
239–243 23
244–248 24
249–253 29
254–258 28
259–263 21
264–268 25
269–273 11
274–278 18
279–283 13
284–288 18
289–293 10
294–298 12
299–303 11
304–308 15
309–313 14
314–318 14
319–323 8
324–328 8
329–333 13
334–338 14
339–343 13
344–348 10
349–353 11
354–358 5
359–363 8
364–368 8
369–373 6
374–378 7
379–383 8
384–388 3
389–393 4
394–398 5
399–403 8
404–408 5
409–413 4
414–418 3
419–423 8
424–428 5
429–433 3
434–438 5
439–441 5
442+ 99 475
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Hiroyuki Takaoka D-index placement in Animal Science and Veterinary in 2026

The chart shows the D-index (discipline H-index) distribution of Animal Science and Veterinary scientists ranked by Research.com in 2026. The highlighted bar marks where Hiroyuki Takaoka sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 58 bars. Horizontal axis: D-Index, 20 to 77+. Vertical axis: number of scientists, 0 to 158. Most scientists, 158, have 31 D-Index. The last bar groups every scientist with 77 D-Index or more. The highlighted bar, 32 D-Index, is where this scientist sits. 20 D-Index: 5 scientists 21 D-Index: 22 scientists 22 D-Index: 31 scientists 23 D-Index: 44 scientists 24 D-Index: 53 scientists 25 D-Index: 66 scientists 26 D-Index: 80 scientists 27 D-Index: 101 scientists 28 D-Index: 106 scientists 29 D-Index: 116 scientists 30 D-Index: 154 scientists 31 D-Index: 158 scientists 32 D-Index: 143 scientists 33 D-Index: 137 scientists 34 D-Index: 126 scientists 35 D-Index: 134 scientists 36 D-Index: 112 scientists 37 D-Index: 115 scientists 38 D-Index: 105 scientists 39 D-Index: 111 scientists 40 D-Index: 107 scientists 41 D-Index: 87 scientists 42 D-Index: 74 scientists 43 D-Index: 62 scientists 44 D-Index: 61 scientists 45 D-Index: 41 scientists 46 D-Index: 51 scientists 47 D-Index: 43 scientists 48 D-Index: 28 scientists 49 D-Index: 47 scientists 50 D-Index: 40 scientists 51 D-Index: 34 scientists 52 D-Index: 33 scientists 53 D-Index: 43 scientists 54 D-Index: 16 scientists 55 D-Index: 32 scientists 56 D-Index: 21 scientists 57 D-Index: 18 scientists 58 D-Index: 28 scientists 59 D-Index: 33 scientists 60 D-Index: 17 scientists 61 D-Index: 21 scientists 62 D-Index: 18 scientists 63 D-Index: 21 scientists 64 D-Index: 9 scientists 65 D-Index: 20 scientists 66 D-Index: 11 scientists 67 D-Index: 16 scientists 68 D-Index: 12 scientists 69 D-Index: 17 scientists 70 D-Index: 13 scientists 71 D-Index: 15 scientists 72 D-Index: 11 scientists 73 D-Index: 11 scientists 74 D-Index: 14 scientists 75 D-Index: 5 scientists 76 D-Index: 6 scientists 77+ D-Index: 100 scientists
20 D-Index 77+

This scientist: 32 D-Index — 34th percentile

34% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 77 D-Index or more.

View D-Index distribution as a table
Number of Animal Science and Veterinary scientists by D-index, Research.com 2026 ranking edition. Based on 3,155 ranked scientists.
D-Index Scientists This scientist
20 5
21 22
22 31
23 44
24 53
25 66
26 80
27 101
28 106
29 116
30 154
31 158
32 143 32
33 137
34 126
35 134
36 112
37 115
38 105
39 111
40 107
41 87
42 74
43 62
44 61
45 41
46 51
47 43
48 28
49 47
50 40
51 34
52 33
53 43
54 16
55 32
56 21
57 18
58 28
59 33
60 17
61 21
62 18
63 21
64 9
65 20
66 11
67 16
68 12
69 17
70 13
71 15
72 11
73 11
74 14
75 5
76 6
77+ 100
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Overview

Hiroyuki Takaoka is affiliated with the University of Malaya in Malaysia and has a research record concentrated in medicine, with a special focus on cardiology, radiology, ecology, and infectious diseases.

Their work spans several specialized subfields, including:

  • Cardiology and Cardiovascular Medicine
  • Radiology, Nuclear Medicine and Imaging
  • Ecology
  • Infectious Diseases
  • Insect Science

Takaoka's research subjects cover diverse main topics, most notably those connected to cardiac and parasitic disease studies. These include:

  • Cardiac Imaging and Diagnostics
  • Parasitic Diseases Research and Treatment
  • Freshwater Macroinvertebrate Diversity and Ecology
  • Insect Symbiosis and Bacterial Influences
  • Cardiovascular Function and Risk Factors
  • Parasite Biology and Host Interactions
  • Cardiomyopathy and Myosin Studies

The scientist's publication history is spread across several journals. Frequent venues include:

  • Acta Tropica
  • Circulation Journal
  • Internal Medicine
  • Circulation Reports
  • Heart and Vessels

Notable recent papers by Takaoka's team include:

  • "Natural infections with larvae of Onchocerca species type I in the human-biting black fly, Simulium nigrogilvum (Diptera: Simuliidae), in western Thailand," published in 2020 in Acta Tropica
  • "Three new species of the Simulium (Simulium) striatum species-group (Diptera: Simuliidae) from Thailand, with their phylogenetic relationships," published in 2020 in Acta Tropica
  • "Discovery of a new black fly species in the Simulium (Simulium) striatum species-group (Diptera: Simuliidae) from northeastern Thailand and its phylogenetic relationships with seven Thai related species," published in 2022 in Acta Tropica
  • "A new species of Simulium (Gomphostilbia) (Diptera: Simuliidae) from Northern Thailand, with its genetic relationship in the S. asakoae species-group," published in 2021 in Acta Tropica
  • "Evaluation of extracellular volume by computed tomography is useful for prediction of prognosis in dilated cardiomyopathy," published in 2022 in Heart and Vessels

Takaoka has collaborated frequently with several researchers, including:

  • Makiko Kinoshita
  • Satomi Yashima
  • Noriko Suzuki-Eguchi
  • Katsuya Suzuki
  • Shuhei Aoki

Their scholarly contributions reflect an interdisciplinary approach blending clinical cardiology with parasitological and ecological studies related to insect vectors and host interactions. This integration underlines the complex relationship between cardiovascular health and infectious disease dynamics, evident in the range of publications and coauthorships.

Best Publications

  • タイ国産ブユ(双翅目, ブユ科)の分類学的研究

    Hiroyuki Takaoka;Hiroshi Suzuki

  • Morphotaxonomic revision of Simulium Gomphostilbia Diptera Simuliidae in the Oriental Region

    Hiroyuki Takaoka

  • Andean leishmaniasis in Ecuador caused by infection with Leishmania mexicana and L. major-like parasites.

    Y. Hashiguchi;E. A. Gomez;V. V. De Coronel;T. Mimori

  • Infective larvae of Cercopithifilaria spp. (Nematoda: Onchocercidae) from hard ticks (Ixodidae) recovered from the Japanese serow (Bovidae).

    Shigehiko Uni;Odile Bain;Hiromi Fujita;Makoto Matsubayashi

  • Black flies (Diptera: Simuliidae) attracted to humans and water buffalos and natural infections with filarial larvae, probably Onchocerca sp., in northern Thailand.

    H Takaoka;W Choochote;C Aoki;M Fukuda

  • Seasonal abundance and daily flying activity of black flies (Diptera: Simuliidae) attracted to human baits in Doi Inthanon National Park, northern Thailand

    Wej Choochote;Hiroyuki Takaoka;Masako Fukuda;Yasushi Otsuka

  • NATURAL INFECTIONS WITH FILARIAL LARVAE IN TWO SPECIES OF BLACK FLIES (DIPTERA : SIMULIIDAE) IN NORTHERN THAILAND

    Masako Fukuda;Wet Choochote;Odile Bain;Chiharu Aoki

  • A LIST OF AND KEYS TO BLACK FLIES (DIPTERA : SIMULIIDAE) IN THAILAND

    Hiroyuki Takaoka;Wej Choochote

  • Seasonal and diurnal biting activities and zoonotic filarial infections of two Simulium species (Diptera: Simuliidae) in northern Thailand.

    Y Ishii;W Choochote;O Bain;M Fukuda

  • Classification, annotated list and keys for the black flies (Diptera: Simuliidae) of Peninsular Malaysia.

    Hiroyuki Takaoka;Zubaidah Ya’Cob;Mohd Sofian-Azirun

  • Molecular and cytogenetic evidence of three sibling species of the Anopheles barbirostris Form A (Diptera:Culicidae) in Thailand.

    Atiporn Saeung;Visut Baimai;Yasushi Otsuka;Rampa Rattanarithikul

  • A multi-locus approach resolves the phylogenetic relationships of the Simulium asakoae and Simulium ceylonicum species groups in Malaysia: evidence for distinct evolutionary lineages.

    V. L. Low;H. Takaoka;P. H. Adler;Z. Ya'cob

  • The black flies (Diptera: Simuliidae) of Vietnam

    Hiroyuki Takaoka;Mohd Sofian-Azirun;Zubaidah Ya’Cob;Chee Dhang Chen

  • Blackfly vectors of zoonotic onchocerciasis in Japan

    H Takaoka;H Takaoka;M Fukuda;Y Otsuka;C Aoki

  • Delineating taxonomic boundaries in the largest species complex of black flies (Simuliidae) in the Oriental Region.

    Van Lun Low;Hiroyuki Takaoka;Pairot Pramual;Peter H. Adler

  • A new black fly species of Simulium (Gomphostilbia) (Diptera: Simuliidae) br />from Sulawesi, Indonesia.

    Hiroyuki Takaoka;Mohd Sofian-Azirun;Chee Dhang Chen;Muhammad Rasul Abdullah Halim

  • Seasonal biodiversity of black flies (Diptera: Simuliidae) and evaluation of ecological factors influencing species distribution at Doi Pha Hom Pok National Park, Thailand

    Wichai Srisuka;Hiroyuki Takaoka;Yasushi Otsuka;Masako Fukuda

  • A new black fly species of Simulium (Simulium) (Diptera: Simuliidae) from Taiwan.

    Hiroyuki Takaoka;Yao-Te Huang

  • Cytogenetic and molecular evidence for two species in the Anopheles barbirostris complex (Diptera: Culicidae) in Thailand.

    Atiporn Saeung;Yasushi Otsuka;Visut Baimai;Pradya Somboon

  • Morphotaxonomic revision of species-groups of Simulium ( Simulium ) (Diptera: Simuliidae) in the Oriental Region.

    Hiroyuki Takaoka

  • New species and records of black flies (Diptera: Simuliidae) from Vinh Phuc Province, Vietnam

    Hiroyuki Takaoka;Mohd Sofian-Azirun;Zubaidah Ya’Cob;Chee Dhang Chen

  • Infective larvae of five Onchocerca species from experimentally infected Simulium species in an area of zoonotic onchocerciasis in Japan.

    M Fukuda;H Takaoka;S Uni;O Bain

  • TAXONOMIC NOTES ON SIMULIIDAE (DIPTERA) FROM THAILAND : DESCRIPTION OF A NEW SPECIES AND NEW DISTRIBUTIONAL RECORDS OF NINE KNOWN SPECIES

    Chaliow Kuvangkadilok;Hiroyuki Takaoka

  • Onchocerca dewittei japonica n. subsp., a common parasite from wild boar in Kyushu Island, Japan.

    S Uni;O Bain;H Takaoka;M Miyashita

  • Zoonotic filariasis caused by Onchocerca dewittei japonica in a resident of Hiroshima Prefecture, Honshu, Japan.

    Shigehiko Uni;Tomoyuki Boda;Koichi Daisaku;Yoshihiro Ikura

Frequent Co-Authors

Wej Choochote
Wej Choochote Chiang Mai University
Shigehiko Uni
Shigehiko Uni University of Malaya
Odile Bain
Odile Bain Centre national de la recherche scientifique, CNRS
Peter H. Adler
Peter H. Adler Clemson University
Takeshi Agatsuma
Takeshi Agatsuma Kōchi University
Wanchai Maleewong
Wanchai Maleewong Khon Kaen University
Yvonne A. L. Lim
Yvonne A. L. Lim University of Malaya
Yoshihisa Hashiguchi
Yoshihisa Hashiguchi Kōchi University
Wanpen Chaicumpa
Wanpen Chaicumpa Mahidol University
Sazaly AbuBakar
Sazaly AbuBakar University of Malaya

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