H.W.J. Edgar

1.1k citations

40 papers · 959 · h-index 20

Impact in

Small Animals top 0.2%
- Helminth infection and control
Parasitology top 1%
- Parasites and Host Interactions
- Parasitic Infections and Diagnostics

Papers in

Small Animals 34
- Helminth infection and control 33
- Animal Behavior and Welfare Studies 4
Ecology 20
- Parasite Biology and Host Interactions 19

Co-authors: I. Fairweather (26 shared papers)R.E.B. Hanna (24 shared papers)G.P. Brennan (19 shared papers)Alan Gordon (11 shared papers)M. A. McCoy (13 shared papers)G. P. Brennan (7 shared papers)M. McConville (8 shared papers)J. Kenny (5 shared papers)
Journals: Veterinary Parasitology (21 papers)Veterinary Record (7 papers)Parasitology Research (3 papers)Animal Science (1 paper)Journal of Zoology (1 paper)
Partner nations: United Kingdom Mexico South Africa

In The Last Decade

H.W.J. Edgar

40 papers receiving 929 citations

Peers

Countries citing papers authored by H.W.J. Edgar

Since Specialization

Citations

This map shows the geographic impact of H.W.J. Edgar'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 H.W.J. Edgar with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites H.W.J. Edgar more than expected).

Fields of papers citing papers by H.W.J. Edgar

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by H.W.J. Edgar. 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 H.W.J. Edgar. The network helps show where H.W.J. Edgar may publish in the future.

Co-authors

The 25 scholars most cited alongside H.W.J. Edgar, 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 H.W.J. Edgar Line = papers co-authored together H.W.J. Edgar 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 40 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Comparison of two assays, a faecal egg count reduction test (FECRT) and a coproantigen reduction test (CRT), for the diagnosis of resistance to triclabendazole in Fasciola hepatica in sheep Veterinary Parasitology ·A. Flanagan, H.W.J. Edgar, Alan Gordon, R.E.B. Hanna, G.P. Brennan, I. Fairweather	2010	77
2	Fasciola hepatica: A comparative survey of adult fluke resistance to triclabendazole, nitroxynil and closantel on selected upland and lowland sheep farms in Northern Ireland using faecal egg counting, coproantigen ELISA testing and fluke histology Veterinary Parasitology ·R.E.B. Hanna, C. McMahon, S.E. Ellison, H.W.J. Edgar, P.-E. Kajugu, Alan Gordon, D. Irwin, Jason P. Barley, F.E. Malone, G.P. Brennan, I. Fairweather	2014	72
3	An evaluation of the efficacy of compound alpha and triclabendazole against two isolates of Fasciola hepatica Veterinary Parasitology ·M. McConville, G.P. Brennan, A. Flanagan, H.W.J. Edgar, R.E.B. Hanna, M. A. McCoy, Alan Gordon, Rafael Castillo, Alicia Hernández‐Campos, I. Fairweather	2009	55
4	Standardisation of a coproantigen reduction test (CRT) protocol for the diagnosis of resistance to triclabendazole in Fasciola hepatica Veterinary Parasitology ·Adrienne M. Flanagan, H.W.J. Edgar, Fiona Forster, Alan Gordon, R.E.B. Hanna, M. A. McCoy, G. P. Brennan, I. Fairweather	2010	54
5	Anthelmintic resistance in Northern Ireland (I): Prevalence of resistance in ovine gastrointestinal nematodes, as determined through faecal egg count reduction testing Veterinary Parasitology ·C. McMahon, David J. Bartley, H.W.J. Edgar, S.E. Ellison, Jason P. Barley, F.E. Malone, R.E.B. Hanna, G. P. Brennan, I. Fairweather	2013	40
6	Fasciola hepatica: Histological changes in the reproductive structures of triclabendazole (TCBZ)-sensitive and TCBZ-resistant flukes after treatment in vivo with TCBZ and the related benzimidazole derivative, Compound Alpha Veterinary Parasitology ·R.E.B. Hanna, H.W.J. Edgar, S. McConnell, E. Toner, M. McConville, G.P. Brennan, C. Devine, Adrienne M. Flanagan, L. Halferty, M. Meaney, Laura‐Kate Shaw, D. Moffett, M. A. McCoy, I. Fairweather	2009	40
7	Effects of life‐history traits on parasite load in grey squirrels Journal of Zoology ·Michael Scantlebury, M. Maher McWilliams, Nikki J. Marks, Jaimie T. A. Dick, H.W.J. Edgar, Heike Lutermann	2010	38
8	Tegumental surface changes in juvenile Fasciola hepatica in response to treatment in vivo with triclabendazole Veterinary Parasitology ·L. Halferty, G. P. Brennan, R.E.B. Hanna, H.W.J. Edgar, M. Meaney, M. McConville, Alan Trudgett, L. Hoey, I. Fairweather	2008	37
9	Efficacy of moxidectin, ivermectin and albendazole oral drenches for suppression of periparturient rise in ewe worm egg output and reduction of anthelmintic treatment for lambs Veterinary Record ·Subhashni Taylor, J. Kenny, H.W.J. Edgar, S.E. Ellison, Lucinda Ferguson	1997	36
10	Fasciola hepatica: Histology of the testis in egg-producing adults of several laboratory-maintained isolates of flukes grown to maturity in cattle and sheep and in flukes from naturally infected hosts Veterinary Parasitology ·R.E.B. Hanna, H.W.J. Edgar, D. Moffett, S. McConnell, I. Fairweather, G.P. Brennan, Alan Trudgett, Elizabeth M. Hoey, L. Cromie, Subhashni Taylor, Roger Daniel	2008	35
11	Surface and internal tegumental changes in juvenile Fasciola hepatica following treatment in vivo with the experimental fasciolicide, compound alpha Veterinary Parasitology ·M. McConville, G. P. Brennan, A. Flanagan, H.W.J. Edgar, M. A. McCoy, Raúl Cueva del Castillo, Alicia Hernández‐Campos, I. Fairweather	2008	32
12	Anthelmintic resistance in Northern Ireland (III): Uptake of ‘SCOPS’ (Sustainable Control of Parasites in Sheep) recommendations by sheep farmers Veterinary Parasitology ·C. McMahon, M. A. McCoy, S.E. Ellison, Jason P. Barley, H.W.J. Edgar, R.E.B. Hanna, F.E. Malone, G.P. Brennan, I. Fairweather	2012	31
13	Milk progesterone profiles and their relationship with fertility, production and disease in dairy cows in Northern Ireland Animal Science ·M. A. McCoy, S. D. Lennox, C.S. Mayne, W.J. McCaughey, H.W.J. Edgar, Denise Catney, Martin Verner, David R. Mackey, Alan Gordon	2006	30
14	Fasciola hepatica : Specificity of a coproantigen ELISA test for diagnosis of fasciolosis in faecal samples from cattle and sheep concurrently infected with gastrointestinal nematodes, coccidians and/or rumen flukes (paramphistomes), under field conditions Veterinary Parasitology ·P.-E. Kajugu, R.E.B. Hanna, H.W.J. Edgar, C. McMahon, M. G. Cooper, Alan Gordon, Jason P. Barley, F.E. Malone, G.P. Brennan, I. Fairweather	2015	29
15	Surface changes in adult Fasciola hepatica following treatment in vivo with the experimental fasciolicide, compound alpha Parasitology Research ·M. McConville, G. P. Brennan, A. Flanagan, R.E.B. Hanna, H.W.J. Edgar, Raúl Cueva del Castillo, Alicia Hernández‐Campos, I. Fairweather	2009	21
16	Tegumental surface changes in adult Fasciola hepatica in response to treatment in vivo with triclabendazole in the sheep host Veterinary Parasitology ·E. Toner, G. P. Brennan, R.E.B. Hanna, H.W.J. Edgar, I. Fairweather	2010	21
17	Specificity of a coproantigen ELISA test for fasciolosis: lack of cross‐reactivity with Paramphistomum cervi and Taenia hydatigena Veterinary Record ·P.-E. Kajugu, R.E.B. Hanna, H.W.J. Edgar, Fiona Forster, F.E. Malone, G.P. Brennan, I. Fairweather	2012	20
18	Ultrastructural changes to the tegumental system and the gastrodermal cells in adult Fasciola hepatica following in vivo treatment with the experimental fasciolicide, compound alpha Parasitology ·M. McConville, G.P. Brennan, Adrienne M. Flanagan, H.W.J. Edgar, Rafael Castillo, Alicia Hernández‐Campos, I. Fairweather	2009	20
19	Prophylactic efficacy of moxidectin for periparturient ewes and mid-summer lambs Veterinary Record ·S. Taylor, H.W.J. Edgar, J. Kenny	1993	20
20	Liver fluke control on sheep farms in Northern Ireland: A survey of changing management practices in relation to disease prevalence and perceived triclabendazole resistance Veterinary Parasitology ·C. McMahon, H.W.J. Edgar, R.E.B. Hanna, S.E. Ellison, Adrienne M. Flanagan, M. A. McCoy, P.-E. Kajugu, Alan Gordon, D. Irwin, J. Barley, F.E. Malone, G.P. Brennan, I. Fairweather	2015	20

About H.W.J. Edgar

H.W.J. Edgar is a scholar working on Small Animals, Ecology, Animal Science and Zoology, Parasitology and Agronomy and Crop Science, having authored 40 papers that have together received 959 indexed citations. Recurring topics across this work include Helminth infection and control (33 papers), Parasite Biology and Host Interactions (19 papers), Coccidia and coccidiosis research (17 papers), Parasites and Host Interactions (8 papers), Ruminant Nutrition and Digestive Physiology (6 papers), Animal Behavior and Welfare Studies (4 papers), Reproductive Physiology in Livestock (4 papers) and Parasitic Infections and Diagnostics (3 papers). The work is most often cited by research in Small Animals (785 citations), Parasitology (359 citations), Animal Science and Zoology (414 citations), Ecology (437 citations) and Agronomy and Crop Science (83 citations). H.W.J. Edgar has collaborated with scholars based in United Kingdom, Mexico and South Africa. Frequent co-authors include I. Fairweather, R.E.B. Hanna, G.P. Brennan, Alan Gordon, M. A. McCoy, G. P. Brennan, M. McConville, J. Kenny, F.E. Malone and Subhashni Taylor. Their work appears in journals such as Veterinary Parasitology, Veterinary Record, Parasitology Research, Animal Science and Journal of Zoology.

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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