World's Best Scientists 2026 revealed!

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Animal Science and Veterinary 36 1570 1450 455 387 277 7869

Vasyl V. Tkach publications per year

The chart shows the history of publications by Vasyl V. Tkach between 1991 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Vasyl V. Tkach published across 35 years, from 1991 to 2025, averaging 8.6 papers a year. Output peaked at 22 publications in 2019. 29 of the 302 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1991 to 2025. Vertical axis: number of publications, 0 to 22. Peak 22 publications in 2019. 1991: 1 publication 1992: 0 publications 1993: 0 publications 1994: 2 publications 1995: 1 publication 1996: 1 publication 1997: 5 publications 1998: 3 publications 1999: 4 publications 2000: 9 publications 2001: 8 publications 2002: 4 publications 2003: 6 publications 2004: 2 publications 2005: 5 publications 2006: 4 publications 2007: 8 publications 2008: 17 publications 2009: 6 publications 2010: 5 publications 2011: 13 publications 2012: 11 publications 2013: 19 publications 2014: 9 publications 2015: 16 publications 2016: 13 publications 2017: 14 publications 2018: 16 publications 2019: 22 publications 2020: 14 publications 2021: 17 publications 2022: 10 publications 2023: 8 publications 2024: 10 publications 2025: 19 publications
1991 2025

302 publications in total across all disciplines

View publications per year as a table
Vasyl V. Tkach: publications per year, 1991 to 2025
Year Publications
1991 1
1992 0
1993 0
1994 2
1995 1
1996 1
1997 5
1998 3
1999 4
2000 9
2001 8
2002 4
2003 6
2004 2
2005 5
2006 4
2007 8
2008 17
2009 6
2010 5
2011 13
2012 11
2013 19
2014 9
2015 16
2016 13
2017 14
2018 16
2019 22
2020 14
2021 17
2022 10
2023 8
2024 10
2025 19
Total 302
Download as CSV

Vasyl V. Tkach 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 Vasyl V. Tkach 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, 274–278 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: 277 publications — 88th percentile

88% 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 18 277
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
Download as CSV

Vasyl V. Tkach 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 Vasyl V. Tkach 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, 36 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: 36 D-Index — 50th percentile

50% 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
33 137
34 126
35 134
36 112 36
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
Download as CSV

Overview

Vasyl V. Tkach is affiliated with the University of North Dakota in the United States. Their research spans multiple areas within environmental science and immunology and microbiology, with a particular focus on parasitology and host interactions.

The scientist's main fields of study include:

  • Environmental Science
  • Immunology and Microbiology

Tkach's work also extends into several subfields, including:

  • Ecology
  • Parasitology
  • Small Animals
  • Genetics
  • Ecology, Evolution, Behavior and Systematics

The key topics addressed in their publications are:

  • Parasite Biology and Host Interactions
  • Helminth infection and control
  • Bird parasitology and diseases
  • Parasites and Host Interactions
  • Vector-borne infectious diseases
  • Parasitic Infections and Diagnostics
  • Genetic diversity and population structure

Vasyl V. Tkach has contributed to multiple papers, including notable recent works such as:

  • "Global drivers of avian haemosporidian infections vary across zoogeographical regions," 2021, Global Ecology and Biogeography
  • "Molecular phylogeny of Diplostomum, Tylodelphys, Austrodiplostomum and Paralaria (Digenea: Diplostomidae) necessitates systematic changes and reveals a history of evolutionary host switching events," 2021, International Journal for Parasitology
  • "Unravelling the diversity of the Crassiphialinae (Digenea: Diplostomidae) with molecular phylogeny and descriptions of five new species," 2021, Current Research in Parasitology and Vector-Borne Diseases
  • "Phylogenetic Relationships of Cardiocephaloides spp. (Digenea, Diplostomoidea) and the Genetic Characterization of Cardiocephaloides physalis from Magellanic Penguin, Spheniscus magellanicus, in Chile," 2020, Acta Parasitologica
  • "Molecular phylogenetics and mitogenomics of three avian dicrocoeliids (Digenea: Dicrocoeliidae) and comparison with mammalian dicrocoeliids," 2020, Parasites & Vectors

The scientist frequently publishes in these venues:

  • Journal of Parasitology
  • Journal of Helminthology
  • Systematic Parasitology
  • Parasitology Research
  • Parasitology International

Among the frequent co-authors collaborating with Vasyl V. Tkach are:

  • Tyler J. Achatz
  • Jeffrey A. Bell
  • Alan Fecchio
  • Jakson R. Martens
  • Eric E. Pulis

Best Publications

  • Phylogeny and classification of the Digenea (Platyhelminthes: Trematoda).

    P.D. Olson;T.H. Cribb;V.V. Tkach;V.V. Tkach;R.A. Bray

  • Molecular phylogenetic analysis of the Microphalloidea Ward, 1901 (Trematoda: Digenea).

    Vasyl V. Tkach;D. Timothy J. Littlewood;Peter D. Olson;J. Mike Kinsella

  • Phylogenetic analysis of the suborder plagiorchiata (Platyhelminthes, Digenea) based on partial lsrDNA sequences.

    Vasyl Tkach;Jan Wojciech Pawlowski;Jan Wojciech Pawlowski;Jean Mariaux

  • Advances and trends in the molecular systematics of the parasitic Platyhelminthes.

    Peter D. Olson;Vasyl V. Tkach

  • Molecular phylogeny and systematics of the Echinostomatoidea Looss, 1899 (Platyhelminthes: Digenea)

    Vasyl V. Tkach;Olena Kudlai;Aneta Kostadinova

  • A new method of DNA extraction from the ethanol-fixed parasitic worms

    Vasyl Tkach;Jan Wojciech Pawlowski

  • PHYLOGENETIC AND BIOGEOGRAPHICAL RELATIONSHIPS AMONG SOME HOLARCTIC FROG LUNG FLUKES (DIGENEA: HAEMATOLOECHIDAE)

    Scott D. Snyder;Vasyl V. Tkach

  • Parasite Prevalence Corresponds to Host Life History in a Diverse Assemblage of Afrotropical Birds and Haemosporidian Parasites

    Holly L. Lutz;Wesley M. Hochachka;Joshua I. Engel;Jeffrey A. Bell

  • Molecular and morphological differentiation between species of the Plagiorchis vespertilionis group (Digenea, Plagiorchiidae) occurring in European bats, with a re-description of P. vespertilionis (Müller, 1780).

    Vasyl V. Tkach;Jan Pawlowski;Viktor P. Sharpilo

  • Climate variation influences host specificity in avian malaria parasites

    Alan Fecchio;Konstans Wells;Jeffrey A. Bell;Vasyl V. Tkach

  • A review of Polylekithum Arnold, 1934 and its familial affinities using morphological and molecular data, with description of Polylekithum catahoulensis sp. nov.

    Stephen S. Curran;Vasyl V. Tkach;Vasyl V. Tkach;Robin M. Overstreet

  • Molecular and morphological evidence for close phylogenetic affinities of the genera Macrodera, Leptophallus, Metaleptophallus and Paralepoderma [Digenea, Plagiorchiata]

    V Tkach;B Grabda-Kazubska;J Pawlowski;Z Swiderski

  • Genetic analysis of Echinococcus granulosus from humans and pigs in Poland, Slovakia and Ukraine. A multicenter study

    A H Kedra;Z Swiderski;V V Tkach;P Dubinsky

  • Building an integrated infrastructure for exploring biodiversity: field collections and archives of mammals and parasites.

    Kurt E Galbreath;Eric P Hoberg;Joseph A Cook;Blas Armién

  • The Beringian coevolution project: Holistic collections of mammals and associated parasites reveal novel perspectives on evolutionary and environmental change in the North

    Joseph A. Cook;Kurt E. Galbreath;Kayce C. Bell;Mariel L. Campbell

  • Neorickettsial endosymbionts of the digenea: diversity, transmission and distribution.

    Jefferson A Vaughan;Vasyl V Tkach;Stephen E Greiman

  • Host community similarity and geography shape the diversity and distribution of haemosporidian parasites in Amazonian birds

    A. Fecchio;R. Pinheiro;G. Felix;I. P. Faria

  • Multiple origins of European populations of the giant liver fluke Fascioloides magna (Trematoda: Fasciolidae), a liver parasite of ruminants.

    Ivica Králová-Hromadová;Eva Bazsalovicsová;Jan Štefka;Jan Štefka;Marta Špakulová

  • Global drivers of avian haemosporidian infections vary across zoogeographical regions

    Alan Fecchio;Nicholas J. Clark;Jeffrey A Bell;Heather Skeen;Heather Skeen

  • Avian host composition, local speciation and dispersal drive the regional assembly of avian malaria parasites in South American birds

    Alan Fecchio;Jeffrey A Bell;Rafael B P Pinheiro;Victor R Cueto

  • The Nematode Genus Rhabdias (Nematoda: Rhabdiasidae) from Amphibians and Reptiles of the Nearctic

    Yuriy Kuzmin;Vasyl V. Tkach;Scott D. Snyder

  • A new real-time PCR protocol for detection of avian haemosporidians

    Jeffrey A. Bell;Jason D. Weckstein;Alan Fecchio;Vasyl V. Tkach

  • Phylogenetic Affinities of Auriculostoma (Digenea: Allocreadiidae), with Descriptions of Two New Species From Peru

    Stephen S. Curran;Vasyl V. Tkach;Robin M. Overstreet

  • Molecular insight into systematics, host associations, life cycles and geographic distribution of the nematode family Rhabdiasidae.

    Vasyl V. Tkach;Yuriy Kuzmin;Scott D. Snyder

Frequent Co-Authors

Rodney A. Bray
Rodney A. Bray Natural History Museum
Jason D. Weckstein
Jason D. Weckstein Drexel University
David I. Gibson
David I. Gibson Natural History Museum
Sarah E. Bush
Sarah E. Bush University of Utah
Bernard Marchand
Bernard Marchand University of Corsica Pascal Paoli
Jan Pawlowski
Jan Pawlowski Heidelberg University
Robin M. Overstreet
Robin M. Overstreet University of Southern Mississippi
Joseph A. Cook
Joseph A. Cook University of New Mexico
Pieter T. J. Johnson
Pieter T. J. Johnson University of Colorado Boulder
Yann Quilichini
Yann Quilichini Centre national de la recherche scientifique, CNRS

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

For students interested in Animal Science and Veterinary studies, pursuing related online degrees can open diverse career opportunities. Programs such as psychology and counseling offer invaluable skills, particularly in areas like human-animal interactions and veterinary behavioral science.

Those seeking specialized education may consider online psyd programs accredited, which provide advanced training in psychology without the barrier of GRE requirements. This flexibility benefits working professionals balancing education with career demands.

Professionals interested in addiction, especially substance abuse within veterinary medicine or animal care, can explore programs at accredited online colleges for drug and alcohol counseling. These programs offer relevant expertise for addressing addiction challenges.

Another path is to develop skills in family dynamics through online marriage and family therapy graduate programs, which can complement animal welfare work by understanding human relationships that influence pet care and animal behavior.

For those aiming higher in the counseling field, exploring online counseling phd programs offers affordable options to earn doctoral credentials. This blend of education enhances career prospects in veterinary mental health support and academia.

Best Scientists Citing Vasyl V. Tkach

Trending Scientists

Recently Published Articles