Johan Steyl

1.1k citations

48 papers · 716 indexed · h-index 15

Impact in

Parasitology top 2%
- Vector-borne infectious diseases
Equine top 5%

Papers in ⓘ

Equine 4
- Veterinary Equine Medical Research 4
Parasitology 10
- Vector-borne infectious diseases 9

Co-authors: B.L. Penzhorn (3 shared papers)L Prozesky (5 shared papers)Wilhelm H. Stoltsz (3 shared papers)Jan G. Myburgh (9 shared papers)Ard M. Nijhof (1 shared paper)Frans Jongejan (1 shared paper)V Pillay (1 shared paper)Tertius A. Kohn (3 shared papers)
Journals: Emerging infectious diseases (4 papers)Onderstepoort Journal of Veterinary Research (4 papers)Veterinary Record (2 papers)BMC Veterinary Research (2 papers)Journal of Wildlife Diseases (1 paper)
Partner nations: South Africa United States United Kingdom

In The Last Decade

Johan Steyl

47 papers receiving 693 citations

Peers

Countries citing papers authored by Johan Steyl

Since Specialization

Citations

This map shows the geographic impact of Johan Steyl's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Johan Steyl with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Johan Steyl more than expected).

Fields of papers citing papers by Johan Steyl

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Johan Steyl. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Johan Steyl. The network helps show where Johan Steyl may publish in the future.

Co-authors

The 25 scholars most cited alongside Johan Steyl, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Johan Steyl Line = papers co-authored together Johan Steyl links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 48 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Molecular Characterization of Theileria Species Associated with Mortality in Four Species of African Antelopes Journal of Clinical Microbiology ·Ard M. Nijhof, V Pillay, Johan Steyl, L Prozesky, Wilhelm H. Stoltsz, John A. Lawrence, B.L. Penzhorn, Frans Jongejan	2005	113
2	Lineage 2 West Nile Virus as Cause of Fatal Neurologic Disease in Horses, South Africa Emerging infectious diseases ·Marietjie Venter, Stacey Human, Dewald Zaayman, Gertruida H. Gerdes, J. H. Williams, Johan Steyl, Patricia A. Leman, Janusz T. Pawęska, Hildegard Setzkorn, Gavin Rous, Sue Murray, Rissa Parker, CYNTHIA M. B. DONNELLAN, Robert Swanepoel	2009	82
3	Conserving wildlife in a changing world: Understanding capture myopathy—a malignant outcome of stress during capture and translocation Conservation Physiology ·Dorothy Breed, Leith C. R. Meyer, Johan Steyl, Amelia Goddard, Richard Burroughs, Tertius A. Kohn	2019	79
4	The post-occipital spinal venous sinus of the Nile crocodile (<i>Crocodylus niloticus</i>): Its anatomy and use for blood sample collection and intravenous infusions Journal of the South African Veterinary Association ·Jan G. Myburgh, Robert M. Kirberger, Johan Steyl, John T. Soley, D G Booyse, F. W. Huchzermeyer, Russel H. Lowers, Louis J. Guillette	2014	58
5	Parasite Co-Infections and Their Impact on Survival of Indigenous Cattle PLoS ONE ·Samuel M. Thumbi, Mark Bronsvoort, Elizabeth J. Poole, Henry Kiara, Philip Toye, Mary Mbole-Kariuki, Ilana Conradie, Amy Jennings, Ian Handel, Jacobus A.W. Coetzer, Johan Steyl, Olivier Hanotte, Mark Woolhouse	2014	54
6	Babesia lengau associated with cerebral and haemolytic babesiosis in two domestic cats Parasites & Vectors ·Anna-Marì Bosman, Marinda C. Oosthuizen, Estelle H. Venter, Johan Steyl, Tertius A. Gous, B.L. Penzhorn	2013	36
7	Mortality in East African shorthorn zebu cattle under one year: predictors of infectious-disease mortality BMC Veterinary Research ·Samuel M. Thumbi, Mark Bronsvoort, Henry Kiara, PG Toye, Elizabeth J. Poole, Mary Ndila, Ilana Conradie, Amy Jennings, Ian Handel, JAW Coetzer, Johan Steyl, Olivier Hanotte, Mark Woolhouse	2013	24
8	PANSTEATITIS OF UNKNOWN ETIOLOGY ASSOCIATED WITH LARGE-SCALE NILE CROCODILE (CROCODYLUS NILOTICUS) MORTALITY IN KRUGER NATIONAL PARK, SOUTH AFRICA: PATHOLOGIC FINDINGS Journal of Zoo and Wildlife Medicine ·Emily Mitchell, F. W. Huchzermeyer, Danny Govender, R G Bengis, Peter Buss, Markus Hofmeyr, Jan G. Myburgh, Johan Steyl, Daniel J Pienaar, Antoinette Kotzé	2013	20
9	West Nile Virus in Wildlife and Nonequine Domestic Animals, South Africa, 2010–2018 Emerging infectious diseases ·J. J. Steyn, Elizabeth C. Botha, Voula Stivaktas, Peter Buss, Brianna R. Beechler, Jan G. Myburgh, Johan Steyl, J. H. Williams, Marietjie Venter	2019	18
10	Theileriosis (Cytauxzoonosis) in Roan antelope (<i>Hippotragus equinus</i>): Field exposure to infection and identification of potential vectors Onderstepoort Journal of Veterinary Research ·Johan Steyl, L Prozesky, Wilhelm H. Stoltsz, John A. Lawrence	2012	17
11	Shuni Virus in Wildlife and Nonequine Domestic Animals, South Africa Emerging infectious diseases ·J. J. Steyn, Pebetsi Motlou, Charmaine van Eeden, Marthi Pretorius, Voula Stivaktas, J. H. Williams, Louwrens Pieter Snyman, Peter Buss, Brianna R. Beechler, Anna E. Jolles, Eva Pérez-Martín, Jan G. Myburgh, Johan Steyl, Marietjie Venter	2020	16
12	Fire-associated reptile mortality in Tembe Elephant Park, South Africa Fire Ecology ·Philip R. Jordaan, Johan Steyl, Cathariné C. Hanekom, Xander Combrink	2020	16
13	The Pathology of Pathogenic Theileriosis in African Wild Artiodactyls Veterinary Pathology ·Sarah J. Clift, Nicola E. Collins, Marinda C. Oosthuizen, Johan Steyl, John A. Lawrence, Emily Mitchell	2019	15
14	Treatment rationale for dogs poisoned with aldicarb (carbamate pesticide) : clinical review Journal of the South African Veterinary Association ·L. F. Arnot, D.J.H. Veale, Johan Steyl, Jan G. Myburgh	2011	14
15	Perforation of the gastrointestinal tracts of four horses by metallic wires Veterinary Record ·Montague N. Saulez, Alexandra J. Burton, Johan Steyl, J. H. Williams, Sarah J. Clift	2009	14
16	Clinical presentation and pathology of suspected vector transmitted African horse sickness in South African domestic dogs from 2006 to 2017 Veterinary Record ·Nicolize O’Dell, Luke F. Arnot, Chris Eric Janisch, Johan Steyl	2018	12
17	Feline panleukopaenia virus in captive non-domestic felids in South Africa Onderstepoort Journal of Veterinary Research ·Emily Mitchell, Helene Brettschneider, Peter Caldwell, Almero Oosthuizen, Desiré L. Dalton, Liza Du Plessis, Johan Steyl, Antoinette Kotzé	2016	11
18	Genotyping and comparative pathology of Spirocerca in black-backed jackals (Canis mesomelas) in South Africa BMC Veterinary Research ·M. M. Bumby, Mark C. Williams, Johan Steyl, Robert F. Harrison-White, Heike Lutermann, Geoffrey T. Fosgate, Pamela J. de Waal, Janishtha R Mitha, Sarah J. Clift	2017	9
19	Zoonotic Alphaviruses in Fatal and Neurologic Infections in Wildlife and Nonequine Domestic Animals, South Africa Emerging infectious diseases ·J. J. Steyn, Isabel Fourie, Johan Steyl, J. H. Williams, Voula Stivaktas, Elizabeth C. Botha, Stefanie van Niekerk, Björn Reininghaus, Marietjie Venter	2020	9
20	In vitro cultivation of a Theileria species from a roan antelope (Hippotragus equinus) Parasitology Research ·Erich Zweygarth, Justin Armand Benade, Johan Steyl, L Prozesky, Otto Koekemoer, Antoinette I. Josemans	2009	8

About Johan Steyl

Johan Steyl is a scholar working on Equine, Parasitology, Small Animals, Infectious Diseases and Ecology, Evolution, Behavior and Systematics, having authored 48 papers that have together received 716 indexed citations. Recurring topics across this work include Viral Infections and Vectors (17 papers), Vector-Borne Animal Diseases (15 papers), Vector-borne infectious diseases (9 papers), Animal Disease Management and Epidemiology (8 papers), Veterinary Equine Medical Research (4 papers), Wildlife Ecology and Conservation (3 papers), Veterinary Oncology Research (3 papers) and Turtle Biology and Conservation (3 papers). The work is most often cited by research in Parasitology (241 citations), Equine (27 citations), Infectious Diseases (300 citations), Small Animals (105 citations) and Ecology, Evolution, Behavior and Systematics (219 citations). Johan Steyl has collaborated with scholars based in South Africa, United States and United Kingdom. Frequent co-authors include B.L. Penzhorn, L Prozesky, Wilhelm H. Stoltsz, Jan G. Myburgh, Ard M. Nijhof, Frans Jongejan, V Pillay, Tertius A. Kohn, Amelia Goddard and Leith C. R. Meyer. Their work appears in journals such as Emerging infectious diseases, Onderstepoort Journal of Veterinary Research, Veterinary Record, BMC Veterinary Research and Journal of Wildlife Diseases.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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