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Animal Science and Veterinary
South Africa
2026

D-Index & Metrics

Animal Science and Veterinary

D-Index
47
Citations
12933
World Ranking
713
National Ranking
7

Research.com Recognitions

  • 2026 - Research.com Animal Science and Veterinary in South Africa Leader Award
  • 2025 - Research.com Animal Science and Veterinary in South Africa Leader Award
  • 2023 - Research.com Animal Science and Veterinary in South Africa Leader Award
  • 2022 - Research.com Animal Science and Veterinary in South Africa Leader Award

Overview

Ivan Gerard Horak is affiliated with the University of Pretoria in South Africa. Their research spans several interrelated scientific fields, focusing predominantly on Medicine, Environmental Science, and Immunology and Microbiology. Within these disciplines, their work emphasizes the subfields of Parasitology, Ecology, Infectious Diseases, Ecology, Evolution, Behavior and Systematics, and Genetics.

The scientist's research addresses multiple topics, including:

  • Vector-borne infectious diseases
  • Viral infections and vectors
  • Animal ecology and behavior studies
  • Plant parasitism and resistance
  • Vector-borne animal diseases
  • Yersinia bacterium, plague, ectoparasites research
  • Wildlife ecology and conservation

Ivan Gerard Horak has contributed to a range of scientific papers published in various venues. Notable recent publications include:

  • Invasive cattle ticks in East Africa: morphological and molecular confirmation of the presence of Rhipicephalus microplus in south-eastern Uganda (2020, Parasites & Vectors)
  • Ticks and tick-borne pathogens infecting livestock and dogs in Tchicala-Tcholoanga, Huambo Province, Angola (2021, Parasitology Research)
  • Sympatry of Amblyomma eburneum and Amblyomma variegatum on African buffaloes and prevalence of pathogens in ticks (2023, Ticks and Tick-borne Diseases)
  • Adaptive radiation and speciation in Rhipicephalus ticks: A medley of novel hosts, nested predator-prey food webs, off-host periods and dispersal along temperature variation gradients (2021, Molecular Phylogenetics and Evolution)
  • Ectoparasites associated with the Bushveld gerbil (Gerbilliscus leucogaster) and the role of the host and habitat in shaping ectoparasite diversity and infestations (2023, Parasitology)

Frequent publication venues for their work include:

  • Parasitology
  • Parasites & Vectors
  • Parasitology Research
  • Research Square (Research Square)
  • Ticks and Tick-borne Diseases

Throughout their career, Ivan Gerard Horak has collaborated extensively with several co-authors. Frequent collaborators include:

  • Boris R. Krasnov (5 joint publications)
  • Kerstin Junker (5 joint publications)
  • Joop Boomker (5 joint publications)
  • Luís Neves (4 joint publications)
  • Dennis Muhanguzi (3 joint publications)

Best Publications

  • Ticks of domestic animals in Africa: a guide to identification of species

    A.R. Walker;A. Bouattour;J.-L. Camicas;A. Estrada-Pena

  • The Genus Rhipicephalus (Acari, Ixodidae): A Guide to the Brown Ticks of the World

    Jane B. Walker;James E. Keirans;Ivan G. Horak

  • The Argasidae, Ixodidae and Nuttalliellidae (Acari: Ixodida) of the world: a list of valid species names

    Alberto A. Guglielmone;Richard G. Robbins;Dmitry A. Apanaskevich;Trevor N. Petney

  • The Argasidae, Ixodidae and Nuttalliellidae (Acari: Ixodida): A World List of Valid Tick Names

    Ivan G. Horak;Jean-Louis Camicas;James E. Keirans

  • The genus Hyalomma Koch, 1844: v. re-evaluation of the taxonomic rank of taxa comprising the H. (Euhyalomma) marginatum koch complex of species (Acari: Ixodidae) with redescription of all parasitic stages and notes on biology

    Dmitry A. Apanaskevich;Ivan G. Horak

  • The known distribution and ecological preferences of the tick subgenus Boophilus (Acari: Ixodidae) in Africa and Latin America

    Agustín Estrada-Peña;A. Bouattour;J. L. Camicas;Alberto Guglielmone

  • Paramphistomiasis of Domestic Ruminants

    I G Horak

  • Efficacy of orally administered fluralaner (BravectoTM) or topically applied imidacloprid/moxidectin (Advocate®) against generalized demodicosis in dogs

    Josephus J. Fourie;Julian E. Liebenberg;Ivan Gerard Horak;Janina Taenzler

  • The ecology of the African vectors of heartwater, with particular reference to Amblyomma hebraeum and Amblyomma variegatum.

    T. N. Petney;I. G. Horak;Y. Rechav

  • Redescription of Haemaphysalis (Rhipistoma) elliptica (Koch, 1844), an old taxon of the Haemaphysalis (Rhipistoma) leachi group from East and southern Africa, and of Haemaphysalis (Rhipistoma) leachi (Audouin, 1826) (Ixodida, Ixodidae).

    Dmitry A. Apanaskevich;Ivan Gerard Horak;J-L. Camicas

  • Boophilus microplus ticks found in West Africa.

    Maxime Madder;Eric Thys;Dirk Geysen;Christian Baudoux

  • Comments on controversial tick (Acari: Ixodida) species names and species described or resurrected from 2003 to 2008

    Alberto A. Guglielmone;Richard G. Robbins;Dmitry A. Apanaskevich;Trevor N. Petney

  • The Genus Hyalomma: VII. Redescription of all Parasitic Stages of H. (Euhyalomma) dromedarii and H. (E.) schulzei (Acari: Ixodidae)

    Dmitry A. Apanaskevich;Anthony L. Schuster;Ivan G. Horak

  • Some avian and mammalian hosts of Amblyomma hebraeum and Amblyomma marmoreum (Acari: Ixodidae)

    I G Horak;K M MacIvor;T N Petney;V De Vos

  • Displacement of Rhipicephalus decoloratus by Rhipicephalus microplus (Acari: Ixodidae) in the Eastern Cape Province, South Africa

    Nkululeko Nyangiwe;Alan Harrison;Ivan Gerard Horak;Ivan Gerard Horak

  • Parasites of domestic and wild animals in South Africa. XXIII. Helminth and arthropod parasites of warthogs, Phacochoerus aethiopicus, in the eastern Transvaal Lowveld.

    Ivan G. Horak;J. Boomker;V. De Vos;F. T. Potgieter

  • Climate change and the genus Rhipicephalus (Acari: Ixodidae) in Africa.

    Jane Mukarugwiza Olwoch;A.S. Van Jaarsveld;Clarke H. Scholtz;Ivan Gerard Horak

  • The ixodid tick burdens of various large ruminant species in South African nature reserves.

    I. G. Horak;F. T. Potgieter;J. B. Walker;V. de Vos

  • Parasites of domestic and wild animals in South Africa. XVI. Helminth and arthropod parasites of blue and black wildebeest (Connochaetes taurinus and Connochaetes gnou).

    Ivan G. Horak;V. De Vos;Moira R. Brown

  • Parasites of domestic and wild animals in South Africa. XXVI. The mosaic of ixodid tick infestations on birds and mammals in the Mountain Zebra National Park

    Horak Ig;Fourie Lj;Novellie Pa;Williams Ej

  • PARASITES OF DOMESTIC AND WILD ANIMALS IN SOUTH AFRICA. XXX. ECTOPARASITES OF KUDUS IN THE EASTERN TRANSVAAL LOWVELD AND THE EASTERN CAPE PROVINCE

    Ivan G. Horak;J. Boomker;A. M. Spickett;V. De Vos

  • Ixodid ticks feeding on humans in South Africa: with notes on preferred hosts, geographic distribution, seasonal occurrence and transmission of pathogens.

    I.G. Horak;I.G. Horak;L.J. Fourie;Heloise Heyne;Jane B. Walker

  • Parasites of domestic and wild animals in South Africa. XV. The seasonal prevalence of ectoparasites on impala and cattle in the Northern Transvaal.

    Ivan Gerard Horak

  • Parasites of domestic and wild animals in South Africa. I. Oestrus ovis in sheep.

    Ivan Gerard Horak

Frequent Co-Authors

Agustín Estrada-Peña
Agustín Estrada-Peña University of Zaragoza
Alberto A. Guglielmone
Alberto A. Guglielmone National Agricultural Technology Institute
Trevor N. Petney
Trevor N. Petney Karlsruhe Institute of Technology
Sonja Matthee
Sonja Matthee Stellenbosch University
Barend Louis Penzhorn
Barend Louis Penzhorn University of Pretoria
Luis Neves
Luis Neves University of Pretoria
Conrad A. Matthee
Conrad A. Matthee Stellenbosch University
Rosina C. Krecek
Rosina C. Krecek University of Johannesburg
James E. Keirans
James E. Keirans Georgia Southern University
Dorothee Stanneck
Dorothee Stanneck Elanco (United States)

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