World's Best Scientists 2026 revealed!
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Animal Science and Veterinary
USA
2023

D-Index & Metrics

Immunology

D-Index
70
Citations
13370
World Ranking
2457
National Ranking
1176

Animal Science and Veterinary

D-Index
70
Citations
13513
World Ranking
175
National Ranking
54

Donald P. Knowles 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 Donald P. Knowles sits on this spectrum.

29–33 publications: 1 scientists 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 publications 442+

This scientist: 283 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.

Donald P. Knowles 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 Donald P. Knowles sits on this spectrum.

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: 70 D-Index — 95th percentile

95% of scientists in this discipline score the same or lower.

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

Research.com Recognitions

  • 2023 - Research.com Animal Science and Veterinary in United States Leader Award
  • 2009 - Fellow of the American Association for the Advancement of Science (AAAS)

Overview

Donald P. Knowles is affiliated with Washington State University in the United States. Their research primarily focuses on the fields of Immunology and Microbiology, as well as Agricultural and Biological Sciences. Within these broad areas, their work prominently engages with parasitology, insect science, ecology, evolution, behavior and systematics, immunology, and infectious diseases.

The topics covered by their research include vector-borne infectious diseases, vector-borne animal diseases, insect and pesticide research, toxin mechanisms and immunotoxins, insect symbiosis and bacterial influences, viral infections and vectors, and helminth infection and control.

Knowles has collaborated frequently with several researchers, including Lindsay M. Fry, Reginaldo G. Bastos, Richard P. Bishop, Kelly P. Sears, and Cynthia Onzere.

Their publications often appear in specific scientific venues such as Pathogens, Parasites & Vectors, Preprints.org, Scientific Reports, and OPAL (Open@LaTrobe) at La Trobe University. Notably, four publications were released in Pathogens and three in Parasites & Vectors.

Recent papers authored or co-authored by Donald P. Knowles include:

  • Twenty Years of Equine Piroplasmosis Research: Global Distribution, Molecular Diagnosis, and Phylogeny, 2020, Pathogens
  • A review of recent research on Theileria parva: Implications for the infection and treatment vaccination method for control of East Coast fever, 2020, Transboundary and Emerging Diseases
  • Imidocarb Dipropionate Lacks Efficacy against Theileria haneyi and Fails to Consistently Clear Theileria equi in Horses Co-Infected with T. haneyi, 2020, Pathogens
  • Equid infective Theileria cluster in distinct 18S rRNA gene clades comprising multiple taxa with unusually broad mammalian host ranges, 2020, Parasites & Vectors
  • Clinical Progression of Theileria haneyi in Splenectomized Horses Reveals Decreased Virulence Compared to Theileria equi, 2022, Pathogens

Donald P. Knowles was awarded the fellowship of the American Association for the Advancement of Science (AAAS) in 2009.

Best Publications

  • Genome sequence of Babesia bovis and comparative analysis of apicomplexan hemoprotozoa.

    Kelly A Brayton;Audrey O. T Lau;David R Herndon;Linda Hannick

  • Detection of Cattle Naturally Infected with Anaplasma marginale in a Region of Endemicity by Nested PCR and a Competitive Enzyme-Linked Immunosorbent Assay Using Recombinant Major Surface Protein 5

    Susana Torioni de Echaide;Donald P. Knowles;Donald P. Knowles;Travis C. McGuire;Guy H. Palmer

  • Preclinical Diagnosis of Scrapie by Immunohistochemistry of Third Eyelid Lymphoid Tissue

    K. I. O'Rourke;T. V. Baszler;T. E. Besser;J. M. Miller

  • Review of equine piroplasmosis.

    L.N. Wise;L.N. Wise;L.S. Kappmeyer;R.H. Mealey;D.P. Knowles;D.P. Knowles

  • The Anaplasma marginale msp5 gene encodes a 19-kilodalton protein conserved in all recognized Anaplasma species.

    E S Visser;T C McGuire;G H Palmer;W C Davis

  • Monoclonal antibody F89/160.1.5 defines a conserved epitope on the ruminant prion protein.

    Katherine I. O’Rourke;Timothy V. Baszler;Janice M. Miller;Terry R. Spraker

  • Polymorphisms in the prion precursor functional gene but not the pseudogene are associated with susceptibility to chronic wasting disease in white-tailed deer.

    Katherine I. O'Rourke;Katherine I. O'Rourke;Terry R. Spraker;Linda K. Hamburg;Thomas E. Besser

  • Efficient use of a small genome to generate antigenic diversity in tick-borne ehrlichial pathogens

    Kelly A. Brayton;Donald P. Knowles;Travis C. McGuire;Guy H. Palmer

  • Transmission of Anaplasma marginale by Boophilus microplus: Retention of Vector Competence in the Absence of Vector-Pathogen Interaction

    James E. Futse;Massaro W. Ueti;Donald P. Knowles;Donald P. Knowles;Guy H. Palmer

  • Association of Mycoplasma ovipneumoniae Infection with Population-Limiting Respiratory Disease in Free-Ranging Rocky Mountain Bighorn Sheep (Ovis canadensis canadensis)

    Thomas E. Besser;E. Frances Cassirer;E. Frances Cassirer;Kathleen A. Potter;John VanderSchalie

  • Mycoplasma ovipneumoniae can predispose bighorn sheep to fatal Mannheimia haemolytica pneumonia

    Rohana P. Dassanayake;Sudarvili Shanthalingam;Caroline N. Herndon;Renuka Subramaniam

  • Competitive inhibition enzyme-linked immunosorbent assay for antibody in sheep and other ruminants to a conserved epitope of malignant catarrhal fever virus.

    Hong Li;D. T. Shen;D. P. Knowles;J. R. Gorham

  • Immune control of Babesia bovis infection

    Wendy C. Brown;Junzo Norimine;Donald P. Knowles;Donald P. Knowles;Will L. Goff

  • Serological diagnosis of bovine neosporosis by Neospora caninum monoclonal antibody-based competitive inhibition enzyme-linked immunosorbent assay.

    T V Baszler;D P Knowles;J P Dubey

  • Antibody to a recombinant merozoite protein epitope identifies horses infected with Babesia equi.

    D P Knowles;L S Kappmeyer;D Stiller;S G Hennager

  • Comparative genomic analysis and phylogenetic position of Theileria equi.

    Lowell S. Kappmeyer;Mathangi Thiagarajan;David R. Herndon;Joshua D. Ramsay

  • Recognition of another member of the malignant catarrhal fever virus group: an endemic gammaherpesvirus in domestic goats

    Hong Li;Janice Keller;Donald P. Knowles;Timothy B. Crawford

  • Experimental transmission of equine hepacivirus in horses as a model for hepatitis C virus.

    Joshua D. Ramsay;Ryan Evanoff;Tom E. Wilkinson;Thomas J. Divers

  • Investigation of sheep-associated malignant catarrhal fever virus infection in ruminants by PCR and competitive inhibition enzyme-linked immunosorbent assay.

    Hong Li;D. T. Shen;D. O'toole;D. P. Knowles

  • Preclinical detection of PrPSc in nictitating membrane lymphoid tissue of sheep

    Katherine I. O'Rourke;T. V. Baszler;S. M. Parish;D. P. Knowles

  • Detection of Equine Antibodies to Babesia caballi by Recombinant B. caballi Rhoptry-Associated Protein 1 in a Competitive-Inhibition Enzyme-Linked Immunosorbent Assay

    Lowell S. Kappmeyer;Lance E. Perryman;Stephen A. Hines;Timothy V. Baszler

  • Chronic disease in goats orally infected with two isolates of the caprine arthritis-encephalitis lentivirus.

    W. P. Cheevers;D. P. Knowles;T. C. McGuire;D. R. Cunningham

  • Pregnancy status and fetal prion genetics determine PrPSc accumulation in placentomes of scrapie-infected sheep

    Wenbin Tuo;Katherine I. O'Rourke;Dongyue Zhuang;William P. Cheevers

  • Severity of arthritis is predicted by antibody response to gp135 in chronic infection with caprine arthritis-encephalitis virus.

    D Knowles;W Cheevers;T McGuire;T Stem

  • Superinfection as a driver of genomic diversification in antigenically variant pathogens.

    James E. Futse;Kelly A. Brayton;Michael J. Dark;Donald P. Knowles

Frequent Co-Authors

Massaro W. Ueti
Massaro W. Ueti Washington State University
Guy H. Palmer
Guy H. Palmer Washington State University
Travis C. McGuire
Travis C. McGuire Washington State University
Glen A. Scoles
Glen A. Scoles United States Department of Agriculture
Terry F. McElwain
Terry F. McElwain Washington State University
William C. Davis
William C. Davis Washington State University
Wendy C. Brown
Wendy C. Brown Washington State University
Thomas E. Besser
Thomas E. Besser Washington State University
John B. Dame
John B. Dame University of Florida
Douglas R. Call
Douglas R. Call Washington State University

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