Ryan O'Handley

APrf Ryan O'Handley

Associate Professor

School of Animal and Veterinary Sciences

College of Science

I am a founding member of the Parasitic Diseases Research Group (ParaDRG) at the University of Adelaide.  My research interests and expertise is focused on the biology and control of parasitic diseases.  I am specifically interested in the development of vaccines and novel drugs to control parasitic diseases in livestock and companion animals.  My current research is targeted to apicomplexam parasites such as Toxoplasma gondii and eneteric coccidia, but I am also interested in Giardiasis, gastrointestinal nematodes and canine heartworm.

I also have a keen interest in parasite diagnostics and lead the Parasitology section of the Veterinary Diagnostic Laboratory at the School of Animal and Veterinary Sciences.

Date Position Institution name
2016 - ongoing Associate Professor, Parasitology University of Adelaide
2015 - 2021 Department Head University of Adelaide
2010 - 2016 Senior Lecturer, Parasitology University of Adelaide
2004 - 2010 Senior Research Fellow Murdoch University
2001 - 2004 Assistant Professor, Parasitology University of Prince Edward Island
2000 - 2001 Research Scientist United States Department of Agriculture
1995 - 1996 Rumen Microbiology Technician Agriculture and Agriculture-Food Canada

Date Institution name Country Title
1995 - 2000 University of Calgary Canada PhD
1991 - 1995 University of Saskatchewan Canada BSc

Year Citation
2025 Atkinson, P. J., O'Handley, R., Nielsen, T., & Caraguel, C. G. B. (2025). Heterogeneous distribution of the reported prevalence of Dirofilaria immitis infections in Australian canids - A systematic review and meta-analysis.. Preventive Veterinary Medicine, 237, 106438-1-106438-9.
DOI Scopus3 WoS3 Europe PMC3
2025 Gancheva, M. R., Mao, E. Y., Romeo, O., Vuong, D., O’Handley, R., Page, S. W., . . . Wilson, D. W. (2025). Screening and hit evaluation of a microbial metabolite library against the pathogenic Plasmodium falciparum and Toxoplasma gondii parasites. International Journal for Parasitology: Drugs and Drug Resistance, 29, 100606-1-100606-14.
DOI
2024 Atkinson, P. J., Stevenson, M., O'Handley, R., Nielsen, T., & Caraguel, C. G. B. (2024). Temperature-bounded development of Dirofilaria immitis larvae restricts the geographical distribution and seasonality of its transmission: case study and decision support system for canine heartworm management in Australia.. International Journal for Parasitology, 54(6), 311-319.
DOI Scopus6 WoS6 Europe PMC6
2024 Atkinson, P. J., Stevenson, M., O'Handley, R., Nielsen, T., & Caraguel, C. (2024). 'Transmission Tracker - Dirofilaria'- a public dashboard to assess in real-time the temperature-bounded transmissibility of canine heartworm across Australia.. Australian Veterinary Journal, 102(12), 626-629.
DOI Scopus1 WoS1 Europe PMC2
2024 Bury, C., Caraguel, C., Chaber, A. L., & O'Handley, R. (2024). Risk factors associated with increased Toxoplasma gondii seroprevalence in South Australian Sheep. Veterinary Parasitology, 332, 7 pages.
DOI Scopus1 WoS1 Europe PMC1
2024 Hough, I., O'Handley, R., & Speight, N. (2024). Cryptosporidium-associated enteritis in captive koalas (Phascolarctos cinereus).. Aust Vet J, 102(6), 313-315.
DOI
2023 Atkinson, P. J., O'Handley, R., Nielsen, T., & Caraguel, C. G. (2023). Relative diagnostic accuracy of point-of-care tests to rule-in Dirofilaria immitis infection in clinically suspect dogs: A systematic review and meta-analysis. Preventive Veterinary Medicine, 217, 105970-1-105970-11.
DOI Scopus2 WoS2 Europe PMC1
2023 Lignereux, L., Tong, W. H., Tan, S., Vyas, A., & O'handley, R. (2023). Presence of IgG antibodies is not a reliable marker of Toxoplasma gondii infection in feral mice. International Journal for Parasitology: Parasites and Wildlife, 22, 75-79.
DOI Scopus1 WoS1 Europe PMC1
2023 Ngo, P., Lignereux, L., O'Handley, R., & Vyas, A. (2023). An extended epiphenotype for an extended phenotype in Toxoplasma gondii infected feral house mice. Functional Ecology, 37(4), 845-851.
DOI Scopus1 WoS1
2022 Baudinette, E., O'Handley, R., & Trengove, C. (2022). Anthelmintic resistance of gastrointestinal nematodes in goats: A systematic review and meta-analysis.. Veterinary parasitology, 312, 1-15.
DOI Scopus23 WoS21 Europe PMC15
2022 Burns, A. L., Sleebs, B. E., Gancheva, M., McLean, K. T., Siddiqui, G., Venter, H., . . . Wilson, D. W. (2022). Targeting malaria parasites with novel derivatives of azithromycin. Frontiers in Cellular and Infection Microbiology, 12(article no. 1063407), 1-10.
DOI Scopus9 WoS8 Europe PMC7
2022 Clune, T., Lockwood, A., Hancock, S., Thompson, A. N., Beetson, S., Bruce, M., . . . Jacobson, C. (2022). Seropositivity to Coxiella burnetii in primiparous and multiparous ewes from southern Australia: A cross-sectional study. Comparative Immunology, Microbiology and Infectious Diseases, 80, 101727.
DOI Scopus5 WoS2 Europe PMC4
2022 Clune, T., Lockwood, A., Hancock, S., Thompson, A. N., Beetson, S., Campbell, A. J. D., . . . Jacobson, C. (2022). Abortion and lamb mortality between pregnancy scanning and lamb marking for maiden ewes in Southern Australia. Animals, 12(1), 14 pages.
DOI Scopus22 WoS17 Europe PMC13
2022 Clune, T., Lockwood, A., Hancock, S., Thompson, A. N., Bruce, M., Beetson, S., . . . Jacobson, C. (2022). Toxoplasma gondii is not an important contributor to poor reproductive performance of primiparous ewes from southern Australia: a prospective cohort study. BMC Veterinary Research, 18(1), 10 pages.
DOI Scopus6 WoS3 Europe PMC4
2022 Clune, T., Bruce, M., Glanville, E., Campbell, A. J. D., Lockwood, A., Hancock, S., . . . Jacobson, C. (2022). Seropositivity to Campylobacter and association with abortion and lamb mortality in maiden ewes from Western Australia, South Australia and Victoria. Australian Veterinary Journal, 100(8), 397-406.
DOI Scopus3 WoS2 Europe PMC2
2022 Hodgens, P., Groffen, H., O'Handley, R., Vyas, A., & Lignereux, L. (2022). Cat predation of Kangaroo Island dunnarts in aftermath of bushfire. Scientific Reports, 12(1), 6 pages.
DOI Scopus4 WoS3
2022 Chaber, A. -L., Easther, R., Cumming, B., Irving, R., Al, K., Smart, C., . . . Lignereux, L. (2022). Ehrlichia canis rapid spread and possible enzooty in northern South Australia and distribution of its vector Rhipicephalus linnaei. AUSTRALIAN VETERINARY JOURNAL, 100(11), 533-538.
DOI Scopus12 WoS11 Europe PMC8
2022 Lindsay, S. A., Caraguel, C. G. B., O’Handley, R., Šlapeta, J., & Gray, R. (2022). Toxoplasma gondii seroprevalence in the endangered Australian sea lion (Neophoca cinerea). Frontiers in Marine Science, 9, 10 pages.
DOI Scopus4 WoS3
2022 Stevens, A. J., Abraham, R., Young, K. A., Russell, C. C., McCluskey, S. N., Baker, J. R., . . . McCluskey, A. (2022). Antigiardial activity of novel guanidine compounds. ChemMedChem, 17(21), e202200341-1-e202200341-6.
DOI Scopus5 WoS4 Europe PMC4
2021 Tong, W. H., Pavey, C., O'Handley, R., & Vyas, A. (2021). Behavioral biology of Toxoplasma gondii infection. PARASITES & VECTORS, 14(1), 6 pages.
DOI Scopus48 WoS47 Europe PMC33
2021 Clune, T., Lockwood, A., Hancock, S., Bruce, M., Thompson, A. N., Beetson, S., . . . Jacobson, C. (2021). Neospora caninum is not an important contributor to poor reproductive performance of primiparous ewes from southern Australia: evidence from a cross-sectional study. Parasitology Research, 120(11), 3875-3882.
DOI Scopus9 WoS8 Europe PMC5
2020 Wong, A., Lanyon, J. M., O'Handley, R., Linedale, R., Woolford, L., Long, T., & Leggatt, G. R. (2020). Serum antibodies against Toxoplasma gondii and Neospora caninum in southeast Queensland dugongs. Marine Mammal Science, 36(1), 180-194.
DOI Scopus9 WoS9
2020 McKenny, L., O'Handley, R., Kovaliski, J., Mutze, G., Peacock, D., & Lanyon, S. (2020). Evidence of infection with Toxoplasma gondii and Neospora caninum in South Australia: using wild rabbits as a sentinel species. Australian Veterinary Journal, 98(8), 380-387.
DOI Scopus7 WoS6 Europe PMC5
2020 Lanyon, S. R., & O'Handley, R. M. (2020). Relationship between Toxoplasma gondii seroprevalence and lamb marking in South Australian sheep flocks. Australian Veterinary Journal, 98(11), 525-528.
DOI Scopus8 WoS6 Europe PMC3
2019 Abraham, R. J., Abraham, S., Stevens, A. J., Page, S. W., McCluskey, A., Trott, D. J., & O'Handley, R. M. (2019). Aminoguanidines: new leads for treatment of Giardia duodenalis infection. International Journal for Parasitology: Drugs and Drug Resistance, 10, 38-44.
DOI Scopus12 WoS8 Europe PMC6
2019 Saeed, M. A., Beveridge, I., Abbas, G., Beasley, A., Bauquier, J., Wilkes, E., . . . Jabbar, A. (2019). Systematic review of gastrointestinal nematodes of horses from Australia. Parasites and Vectors, 12(1), 16 pages.
DOI Scopus55 WoS51 Europe PMC40
2019 Dearsley, E., O'Handley, R. M., & Caraguel, C. G. (2019). Is canine heartworm (Dirofilaria immitis) endemic to South Australia?. Australian Veterinary Journal, 97(6), 191-196.
DOI Scopus11 WoS10 Europe PMC6
2018 Abraham, R., O'Dea, M., Rusdi, B., Page, S., O'Handley, R., & Abraham, S. (2018). Giardia duodenalis mouse model for the development of novel antigiardial agents. Journal of Microbiological Methods, 145, 7-9.
DOI Scopus3 WoS3 Europe PMC3
2018 Hickey, E., Wong, H., Khazandi, M., Ogunniyi, A., Petrovski, K., Garg, S., . . . Trott, D. (2018). Repurposing Ionophores as novel antimicrobial agents for the treatment of bovine mastitis caused by Gram-positive pathogens. Journal of Veterinary Pharmacology and Therapeutics, 41(5), 746-754.
DOI Scopus19 WoS18 Europe PMC15
2018 Evans, C., Lanyon, S., O Handley, R., Reichel, M., & Cockcroft, P. (2018). Seroprevalence of antibodies to Pestivirus infections in South Australian sheep flocks. Australian Veterinary Journal, 96(8), 312-314.
DOI Scopus10 WoS7 Europe PMC4
2017 Uehlinger, F., Naqvi, S., Greenwood, S., McClure, J., Conboy, G., O'Handley, R., & Barkema, H. (2017). Comparison of five diagnostic tests for Giardia duodenalis in fecal samples from young dogs. Veterinary Parasitology, 244, 91-96.
DOI Scopus25 WoS22 Europe PMC19
2016 Abraham, R., Stevens, A., Young, K., Russell, C., Qvist, A., Khazandi, M., . . . Trott, D. (2016). Robenidine analogues as Gram-positive antibacterial agents. Journal of Medicinal Chemistry, 59(5), 2126-2138.
DOI Scopus30 WoS30 Europe PMC27
2015 Wong, H., Maker, G., Trengove, R., & O'Handley, R. (2015). Gas chromatography-mass spectrometry-based metabolite profiling of Salmonella enterica serovar typhimurium differentiates between biofilm and planktonic phenotypes. Applied and Environmental Microbiology, 81(8), 2660-2666.
DOI Scopus23 WoS23 Europe PMC15
2015 Jeffery Marano, R., Jane Wallace, H., Wijeratne, D., William Fear, M., San Wong, H., & O'Handley, R. (2015). Secreted biofilm factors adversely affect cellular wound healing responses in vitro. Scientific Reports, 5(1), 11 pages.
DOI Scopus41 WoS41 Europe PMC32
2014 Geurden, T., Olson, M., O'Handley, R., Schetters, T., Bowman, D., & Vercruysse, J. (2014). World Association for the Advancement of Veterinary Parasitology (WAAVP): guideline for the evaluation of drug efficacy against non-coccidial gastrointestinal protozoa in livestock and companion animals. Veterinary Parasitology, 204(3-4), 81-86.
DOI Scopus12 WoS11 Europe PMC25
2013 Uehlinger, F., Greenwood, S., McClure, J., Conboy, G., O'Handley, R., & Barkema, H. (2013). Zoonotic potential of Giardia duodenalis and Cryptosporidium spp. and prevalence of intestinal parasites in young dogs from different populations on Prince Edward Island, Canada. Veterinary Parasitology, 196(3), 509-514.
DOI Scopus60 WoS48 Europe PMC37
2013 Tai, M., O'Handley, R., Hemmatzadeh, F., Jenkins, D., & Stott, P. (2013). Ovine nematodes in wild lagomorphs in Australia and first record of Trichostrongylus rugatus in free living lagomorphs. Veterinary Parasitology, 197(1-2), 370-373.
DOI Scopus4 WoS4 Europe PMC2
2013 Koh, W., Geurden, T., Paget, T., O'Handley, R., Steuart, R., Thompson, R., & Buret, A. (2013). Giardia duodenalis assemblage-specific induction of apoptosis and tight junction disruption in human intestinal epithelial cells: Effects of mixed infections. Journal of Parasitology, 99(2), 353-358.
DOI Scopus45 WoS37 Europe PMC35
2013 Wapenaar, W., Barkema, H., & O'Handley, R. (2013). Fecal shedding of Toxocara canis and other parasites in foxes and coyotes on Prince Edward Island, Canada. Journal of Wildlife Diseases, 49(2), 394-397.
DOI Scopus13 WoS11 Europe PMC7
2012 Wapenaar, W., De Bie, F., Johnston, D., O'Handley, R., & Barkema, H. (2012). Population structure of harvested Red Foxes (Vulpes vulpes) and Coyotes (Canis latrans) on Prince Edward Island, Canada. Canadian Field-Naturalist, 126(4), 288-294.
DOI Scopus2 WoS2
2011 Uehlinger, F., Greenwood, S., O'Handley, R., McClure, J., Coklin, T., Dixon, B., . . . Barkema, H. (2011). Prevalence and genotypes of Giardia duodenalis in dairy and beef cattle in farms around Charlottetown, Prince Edward Island, Canada. Canadian Veterinary Journal-Revue Veterinaire Canadienne, 52(9), 967-972.
Scopus19 WoS17 Europe PMC12
2011 VanLeeuwen, J., Greenwood, S., Clark, F., Acorn, A., Markham, F., McCarron, J., & O'Handley, R. (2011). Monensin use against Neospora caninum challenge in dairy cattle. Veterinary Parasitology, 175(3-4), 372-376.
DOI Scopus19 WoS18 Europe PMC17
2010 Wong, H., Townsend, K., Fenwick, S., Trengove, R., & O'Handley, R. (2010). Comparative susceptibility of planktonic and 3-day-old Salmonella Typhimurium biofilms to disinfectants. Journal of Applied Microbiology, 108(6), 2222-2228.
DOI Scopus72 WoS64 Europe PMC41
2010 Wong, H., Townsend, K., Fenwick, S., Maker, G., Trengove, R., & O'Handley, R. (2010). Comparative susceptibility of Salmonella Typhimurium biofilms of different ages to disinfectants. Biofouling, 26(7), 859-864.
DOI Scopus42 WoS35 Europe PMC21
2009 Coklin, T., Uehlinger, F., Farber, J., Barkema, H., O'Handley, R., & Dixon, B. (2009). Prevalence and molecular characterization of Cryptosporidium spp. in dairy calves from 11 farms in Prince Edward Island, Canada. Veterinary Parasitology, 160(3-4), 323-326.
DOI Scopus33 WoS30 Europe PMC20
2009 Parameswaran, N., O'Handley, R., Grigg, M., Wayne, A., & Thompson, R. (2009). Vertical transmission of Toxoplasma gondii in Australian marsupials. Parasitology, 136(9), 939-944.
DOI Scopus38 WoS31 Europe PMC26
2009 Parameswaran, N., O'Handley, R., Grigg, M., Fenwick, S., & Thompson, R. (2009). Seroprevalence of Toxoplasma gondii in wild kangaroos using an ELISA. Parasitology International, 58(2), 161-165.
DOI Scopus49 WoS45 Europe PMC32
2008 Steuart, R., O'Handley, R., Lipscombe, R., Lock, R., & Thompson, R. (2008). Alpha 2 giardin is an assemblage A-specific protein of human infective Giardia duodenalis. Parasitology, 135(14), 1621-1627.
DOI Scopus22 WoS23 Europe PMC19
2008 Uehlinger, F., Barkema, H., O'Handley, R., Parenteau, M., Parrington, L., VanLeeuwen, J., & Dixon, B. (2008). Comparison of flow cytometry and immunofluorescence microscopy for the detection of Giardia duodenalis in bovine fecal samples. Journal of Veterinary Diagnostic Investigation, 20(2), 178-185.
DOI Scopus6 WoS7 Europe PMC4
2008 O'Handley, R. (2008). Cryptosporidium parvum infection in cattle: are current perceptions accurate?. Trends in Parasitology, 23(10), 477-480.
DOI Scopus32 WoS25 Europe PMC19
2008 Thompson, R., Palmer, C., & O'Handley, R. (2008). The public health and clinical significance of Giardia and Cryptosporidium in domestic animals. Veterinary Journal, 177(1), 18-25.
DOI Scopus244 WoS196 Europe PMC151
2007 Wapenaar, W., Barkema, H., Schares, G., Rouvinen-Watt, K., Zeijlemaker, L., Poorter, B., . . . Dubey, J. (2007). Evaluation of four serological techniques to determine the seroprevalence of Neospora caninum in foxes (Vulpes vulpes) and coyotes (Canis latrans) on Prince Edward Island, Canada. Veterinary Parasitology, 145(1-2), 51-58.
DOI Scopus15 WoS16 Europe PMC11
2007 Wapenaar, W., Barkema, H., Eysker, M., & O'Handley, R. (2007). An outbreak of dictyocaulosis in lactating cows on a dairy farm. Journal of the American Veterinary Medical Association, 231(11), 1715-1718.
DOI Scopus29 WoS23 Europe PMC15
2007 Wapenaar, W., Barkema, H., O'Handley, R., & Bartels, C. (2007). Use of an enzyme-linked immunosorbent assay in bulk milk to estimate the prevalence of Neospora caninum on dairy farms in Prince Edward Island, Canada. Canadian Veterinary Journal-Revue Veterinaire Canadienne, 48(5), 493-499.
Scopus21 WoS18 Europe PMC12
2007 Uehlinger, F., O'Handley, R., Greenwood, S., Guselle, N., Gabor, L., Van Velsen, C., . . . Barkema, H. (2007). Efficacy of vaccination in preventing giardiasis in calves. Veterinary Parasitology, 146(1-2), 182-188.
DOI Scopus14 WoS16 Europe PMC11
2007 Wapenaar, W., Barkema, H., VanLeeuwen, J., McClure, J., O'Handley, R., Kwok, O., . . . Jenkins, M. (2007). Comparison of serological methods for the diagnosis of Neospora caninum infection in cattle. Veterinary Parasitology, 143(2), 166-173.
DOI Scopus53 WoS50 Europe PMC40
2006 Wapenaar, W., Jenkins, M., O'Handley, R., & Barkema, H. (2006). Neospora caninum-like oocysts observed in feces of free-ranging red foxes (Vulpes vulpes) and coyotes (Canis latrans). Journal of Parasitology, 92(6), 1270-1274.
DOI Scopus60 WoS53 Europe PMC43
2006 Uehlinger, F., Barkema, H., Dixon, B., Coklin, T., & O'Handley, R. (2006). Giardia duodenalis and Cryptosporidium spp. in a veterinary college bovine teaching herd. Veterinary Parasitology, 142(3-4), 231-237.
DOI Scopus37 WoS35 Europe PMC28
2006 O'Handley, R., & Olson, M. (2006). Giardiasis and Cryptosporidiosis in ruminants. Veterinary Clinics of North America-Food Animal Practice, 22(3), 623-643.
DOI Scopus95 WoS83 Europe PMC68
2006 Ogden, N., Trudel, L., Artsob, H., Barker, I., Beauchamp, G., Charron, D., . . . Lindsay, L. (2006). Ixodes scapularis ticks collected by passive surveillance in Canada: analysis of geographic distribution and infection with Lyme borreliosis agent Borrelia burgdorferi. Journal of Medical Entomology, 43(3), 600-609.
DOI Scopus148 WoS143 Europe PMC119
2006 McInnes, L., Ryan, U., O'Handley, R., Sager, H., Forshaw, D., & Palmer, D. (2006). Diagnostic significance of Neospora caninum DNA detected by PCR in cattle serum. Veterinary Parasitology, 142(3-4), 207-213.
DOI Scopus28 WoS28 Europe PMC22
2004 Jenkins, M., Soares, R., Murphy, C., Hemphill, A., O'Handley, R., & Dubey, J. P. (2004). Localization of a 56-kDa antigen that is present in multiple developmental stages of Neospora caninum.. The Journal of parasitology, 90(3), 660-663.
DOI Scopus3 WoS2 Europe PMC2
2004 Olson, M. E., O'Handley, R. M., Ralston, B. J., McAllister, T. A., & Thompson, R. C. A. (2004). Update on Cryptosporidium and Giardia infections in cattle. Trends in Parasitology, 20(4), 185-191.
DOI Scopus254 WoS221 Europe PMC152
2003 O'Handley, R. M., Morgan, S. A., Parker, C., Jenkins, M. C., & Dubey, J. P. (2003). Vaccination of ewes for prevention of vertical transmission of Neospora caninum. American Journal of Veterinary Research, 64(4), 449-452.
DOI Scopus17 WoS14 Europe PMC13
2003 O'Handley, R. M., Ceri, H., Anette, C., & Olson, M. E. (2003). Passive immunity and serological immune response in dairy calves associated with natural Giardia duodenalis infections. Veterinary Parasitology, 113(2), 89-98.
DOI Scopus30 WoS29 Europe PMC22
2002 O'Handley, R., Liddell, S., Parker, C., Jenkins, M. C., & Dubey, J. P. (2002). Experimental infection of sheep with Neospora caninum oocysts. Journal of Parasitology, 88(6), 1120-1123.
DOI Scopus31 WoS30 Europe PMC23
2001 O'Handley, R. M., Buret, A. G., McAllister, T. A., Jelinski, M., & Olson, M. E. (2001). Giardiasis in dairy calves: Effects of fenbendazole treatment on intestinal structure and function. International Journal for Parasitology, 31(1), 73-79.
DOI Scopus38 WoS36 Europe PMC22
2000 O'Handley, R. M., Olson, M. E., Fraser, D., Adams, P., & Thompson, R. C. A. (2000). Prevalence and genotypic characterisation of Giardia in dairy calves from Western Australia and Western Canada. Veterinary Parasitology, 90(3), 193-200.
DOI Scopus129 WoS124 Europe PMC98
2000 O'Handley, R. M., Cockwill, C., Jelinski, M., McAllister, T. A., & Olson, M. E. (2000). Effects of repeat fenbendazole treatment in dairy calves with giardiosis on cyst excretion, clinical signs and production. Veterinary Parasitology, 89(3), 209-218.
DOI Scopus39 WoS36 Europe PMC25
2000 O'HANDLEY, R. M. (2000). Unknown Title. Vet. Parasitol., 90, 193-200.
1999 O'Handley, R. M., Cockwill, C., McAllister, T. A., Jelinski, M., Morck, D. W., & Olson, M. E. (1999). Duration of naturally acquired giardiosis and cryptosporidiosis in dairy calves and their association with diarrhea. Journal of the American Veterinary Medical Association, 214(3), 391-396.
DOI Scopus221 WoS203 Europe PMC124
1997 Olson, M. E., Guselle, N. J., O'Handley, R. M., Swift, M. L., McAllister, T. A., Jelinski, M. D., & Morck, D. W. (1997). Giardia and Cryptosporidium in dairy calves in British Columbia. Canadian Veterinary Journal, 38(11), 703-706.
Scopus119 WoS111 Europe PMC70
1997 O'Handley, R. M., Olson, M. E., McAllister, T. A., Morck, D. W., Jelinski, M., Royan, G., & Cheng, K. J. (1997). Efficacy of fenbendazole for treatment of giardiasis in calves. American Journal of Veterinary Research, 58(4), 384-388.
DOI Scopus49 WoS44 Europe PMC23

Year Citation
2019 Geurden, T., & O’Handley, R. (2019). Cryptosporidiosis: An update. In Encyclopedia of Environmental Health (pp. 781-788). Elsevier.
DOI
2011 Geurden, T., & O'Handley, R. (2011). Cryptosporidiosis: An Update. In J. Nriagu (Ed.), Encyclopedia of Environmental Health (pp. 844-851). Elsevier.
DOI
2011 Geurden, T., & O'Handley, R. (2011). Cryptosporidiosis: An Update. In Encyclopedia of Environmental Health Volume 1 5 (Vol. 1, pp. V1-V1-851).
DOI
2003 Olson, M. E., Ralston, B. J., O'Handley, R., Guselle, N. J., & Appelbee, A. J. (2003). What is the Clinical and Zoonotic Significance of Cryptosporidiosis in Domestic Animals and Wildlife. In Cryptosporidium from Molecules to Disease (pp. 51-68). Elsevier.
DOI Scopus16
2002 O'Handley, R. M. (2002). Giardia in Farm Animals. In B. E. Olson, M. E. Olson, & P. E. Wallis (Eds.), Giardia The Cosmopolitan Parasite. Wallingford, England : CABI Publishing.

Year Citation
2019 Dal Grande, E., Nielsen, T. D., & O'Handley, R. M. (2019). Endemic parasitic conditions in sheep and association with other endemic conditions using the South Australian Enhanced Abattoir Surveillance (EAS) Program. Poster session presented at the meeting of Australian Society for Parasitology Conference. Adelaide, SA, Australia.
2017 Lanyon, S. R., McKenny, L., Kovaliski, J., Peacock, D., Mutze, G., & O'Handley, R. (2017). Environmental Contamination with Toxoplasma gondii and Neospora caninum in South Australia, using rabbits as a sentinel species. Poster session presented at the meeting of Australian Society for Parasitology Annual Conference. Luera, NSW.
2016 O'Handley, R., & Lanyon, S. R. (2016). Prevalence and reproductive impact of Toxoplasma gondii infection in South Australian sheep. Poster session presented at the meeting of International Congress for Tropical Medicine and Malaria. Brisbane, Qld.
2016 Tragar, E., Caraguel, C. G., O'Handley, R. M., Firestone, S., & Stevenson, M. (2016). Prediction of canine heartworm transmission seasons in Australia. Poster session presented at the meeting of GEOVET 2016. Valdivia, Chile.

Parasitology, VET SCI 3515RW / ANSCI 3515RW (course coordinator 2010-Present)

This course is a core component of the Veterinary Bioscience degree and the DVM degree and a elective in the Animal Science degree.  Lectures focus on concepts of parasitology and parasitism, parasite life cycles, and the pathogenesis of parasitic disease.  Practicals focus on clinical diagnosis of parasitism and students work independently.  Small group learning, critical thinking, and problem solving skills are a major component of the practicals.

 

Pathology and Diagnostic Services A and B, VET SCI 7304ARW

Postgraduate rotation as part of the DVM program.  The parasitology component involves students performing diagnoses on actual parasitology cases and forces them to consider clinical outcomes, treatment, and control measures.  Small group teaching.

Date Role Research Topic Program Degree Type Student Load Student Name
2025 Principal Supervisor A Search for Novel Anthelmintics & Understanding Mechanisms of Action & Resistance Against Equine Gastrointestinal Nematodes Doctor of Philosophy Doctorate Full Time Miss Megan Arianne Jones
2025 Principal Supervisor A Search for Novel Anthelmintics & Understanding Mechanisms of Action & Resistance Against Equine Gastrointestinal Nematodes Doctor of Philosophy Doctorate Full Time Miss Megan Arianne Jones
2021 Principal Supervisor Development of methods to control toxoplasmosis and associated apicomplexan parasites in livestock Doctor of Philosophy Doctorate Full Time Mr Quinn Phillip Mackie
2021 Principal Supervisor Development of methods to control toxoplasmosis and associated apicomplexan parasites in livestock Doctor of Philosophy Doctorate Full Time Mr Quinn Phillip Mackie

Date Role Research Topic Program Degree Type Student Load Student Name
2022 - 2025 Co-Supervisor Ecology of vector-borne disease in Australia Doctor of Philosophy Doctorate Part Time Dr Peter Jonathon Atkinson
2016 - 2024 Principal Supervisor The Search for New Species of the Protist Family Folliculinidae in Australia and a Taxonomic Review of the Genus Folliculinidae Doctor of Philosophy Doctorate Full Time Mr John Douglas
2013 - 2018 Principal Supervisor Repurposing of Robenidine and Characterization of Novel Analogues for Treatment of Infectious Diseases Doctor of Philosophy Doctorate Full Time Mrs Rebecca Jane Abraham
2010 - 2013 Co-Supervisor Do sheep worms occur in wild hares and rabbits in Australia? Master of Science Master Full Time Miss Marina Hsiang Hua Tai

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