Research Topics
| Eugene LyonsSummaryAffiliation: University of Kentucky Country: USA Publications
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Publications
Observations in 2001 on hookworms ( Uncinaria spp.) in otariid pinnipedsE T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, KY 40546 0099, Lexington, USA
Parasitol Res 89:503-5. 2003..The apparent zero infection rate in these pups is possibly because the rocky terrain of this rookery is not suitable for hookworm transmission...- Historic importance of some aspects of research by O. Wilford Olsen on hookworms (Uncinaria lucasi) in northern fur seals (Callorhinus ursinus) and Steller sea lions (Eumatopias jubatus) in 1951 on St. Paul Island, AlaskaE T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY 405465 0099, USA
Parasitol Res 95:353-7. 2005..lucasi) is probably the same in both pinniped hosts. This information is especially important because very little has been published on taxonomy of hookworms in E. jubatus... 
Further indication of lowered activity of ivermectin on immature small strongyles in the intestinal lumen of horses on a farm in Central KentuckyE T Lyons
Gluck Equine Research Center, Department of Veterinary Science, University of Kentucky, Lexington, KY, 40546 0099, USA
Parasitol Res 112:889-91. 2013..Data on five other helminth species were recorded...- Parasitological examination for presence of hookworms (Uncinaria spp.) in northern elephant seals (Mirounga angustirostris) at Año Nuevo State Reserve, California (2012)E T Lyons
Department of Veterinary Science, University of Kentucky, Gluck Equine Research Center, Lexington, KY 40546 0099, USA
Parasitol Res 111:1847-50. 2012..Evidence of hookworm presence was not detected in any of the samples examined. Possible reasons why hookworms were not found in northern elephant seals on the mainland of Año Nuevo State Reserve are discussed... - Update on the prevalence of the hookworm, Uncinaria lucasi, in northern fur seals (Callorhinus ursinus) on St. Paul Island, Alaska, 2011Eugene T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY 40546 0099, USA
Parasitol Res 111:1397-400. 2012..lucasi in SAMs of the northern fur seals. Continued low prevalence of hookworms the last several years parallels the tremendous decline in the number of fur seals on SPI over a similar time period... - Investigation of strongyle EPG values in horse mares relative to known age, number positive, and level of egg shedding in field studies on 26 farms in Central Kentucky (2010-2011)E T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY 40546 0099, USA
Parasitol Res 110:2237-45. 2012..While data were not as clear-cut on the SB and MLH mares, several of those which were negative and with "low" EPG values could be excluded from antiparasitic treatment... - Macrocyclic lactones for parasite control in equidsE T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY 40546 0099, USA
Curr Pharm Biotechnol 13:1070-7. 2012..Recently however lower than initial activity on ascarids and small strongyles has been found for both ivermectin and moxidectin... - Probable reason why small strongyle EPG counts are returning "early" after ivermectin treatment of horses on a farm in Central KentuckyE T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY, 40546 0099, USA
Parasitol Res 104:569-74. 2009..This aspect helps strengthen the validity of the interpretation of the findings... - Evaluation of parasiticidal activity of fenbendazole, ivermectin, oxibendazole, and pyrantel pamoate in horse foals with emphasis on ascarids (Parascaris equorum) in field studies on five farms in Central Kentucky in 2007E T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY 40546 0099, USA
Parasitol Res 103:287-91. 2008..and 33 with strongyle eggs (12% red.) and one farm at 2x (13.2 mg base/kg); 18 foals were examined, 13 with ascarid eggs (23% red.) and 15 with strongyle eggs (27% red.)... - Field studies indicating reduced activity of ivermectin on small strongyles in horses on a farm in Central KentuckyE T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY 4056 0099, USA
Parasitol Res 103:209-15. 2008..The results of this ivermectin investigation showed that the strongyle EPG counts started returning about twice as quickly post-ivermectin-treatment of horses than when the drug was first marketed in the early 1980s... - Study (1991 to 2001) of drug-resistant Population B small strongyles in critical tests in horses in Kentucky at the termination of a 40-year investigationE T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY 40546 0099, USA
Parasitol Res 101:689-701. 2007..Data on prevalence and drug activity on other internal parasite species besides small strongyles also are given... - Parasite field study in central Kentucky on thoroughbred foals (born in 2004) treated with pyrantel tartrate daily and other parasiticides periodicallyE T Lyons
Department of Veterinary Science, University of Kentucky, Gluck Equine Research Center, Lexington, KY 40546 0099, USA
Parasitol Res 100:473-8. 2007..It is uncertain whether the low ascarid prevalence was from activity of pyrantel tartrate and/or the other drugs or to a limited source of infective eggs... - Critical tests evaluating efficacy of moxidectin against small strongyles in horses from a herd for which reduced activity had been found in field tests in Central KentuckyEugene T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY 40546 0099, USA
Parasitol Res 107:1495-8. 2010..In any event, after treatment of some horses with moxidectin, the life cycle of small strongyles is shorter now than at the onset of usage of this compound... - Field tests demonstrating reduced activity of ivermectin and moxidectin against small strongyles in horses on 14 farms in Central Kentucky in 2007-2009Eugene T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY 40546 0099, USA
Parasitol Res 108:355-60. 2011..IVM has been used much more extensively in this geographical area than MOX. Reduced activity of MOX was evident even on farms with rare or no apparent previous use of MOX but with probable extensive use of IVM... - Reduced activity of moxidectin and ivermectin on small strongyles in young horses on a farm (BC) in Central Kentucky in two field tests with notes on variable counts of eggs per gram of feces (EPGs)Eugene T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY 40546 0099, USA
Parasitol Res 108:1315-9. 2011..Most of the MOX- and IVM-treated horses in study B and some in study A had strongyle EPG counts returning almost twice as quickly as when these compounds were first marketed... - Investigations of peritoneal and intestinal infections of adult hookworms (Uncinaria spp.) in northern fur seal (Callorhinus ursinus) and California sea lion (Zalophus californianus) pups on San Miguel Island, California (2003)Eugene T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY 40546 0099, USA
Parasitol Res 109:581-9. 2011..Further research, like in the present study, should help understand and monitor the apparent ever changing role of hookworm disease in the health of northern fur seal and California sea lion pups on SMI... - Further evaluation in field tests of the activity of three anthelmintics (fenbendazole, oxibendazole, and pyrantel pamoate) against the ascarid Parascaris equorum in horse foals on eight farms in Central Kentucky (2009-2010)Eugene T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY 40546 0099, USA
Parasitol Res 109:1193-7. 2011..Although the efficacy varied among the drugs, combined data for all farms indicated a significant reduction of ascarid infections for FBZ (p < 0.0001) and OBZ (p < 0.0001) but not for PRT (p = 0.0953)... - Review of research on hookworms (Uncinaria lucasi Stiles, 1901) in northern fur seals (Callorhinus ursinus Linnaeus, 1758)Eugene T Lyons
Department of Veterinary Science, University of Kentucky, Gluck Equine Research Center, Lexington, KY 40546 0099, USA
Parasitol Res 109:257-65. 2011..Emphasis is placed on research on this host-parasite system in the Pribilof Islands, AK, USA where the bulk of the studies has been performed... - Observations on development of natural infection and species composition of small strongyles in young equids in KentuckyEugene T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY 40546 0099, USA
Parasitol Res 109:1529-35. 2011..Additional data are presented on the number of worms per foal, distribution of the worms in the parts (cecum, ventral colon, and dorsal colon) of the large intestine, and proportion of species found... - Prevalence of large endoparasites at necropsy in horses infected with Population B small strongyles in a herd established in Kentucky in 1966E T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY 40546 0099, USA
Parasitol Res 99:114-8. 2006..Oxyuris equi (one to 129) were recovered from seven horses (330 days to 23 years old). Thelazia lacrymalis (one to 85) infected the eyes of five horses (317 days to 11 years old)... - Field studies on endoparasites of Thoroughbred foals on seven farms in central Kentucky in 2004E T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY 40546 0099, USA
Parasitol Res 98:496-500. 2006..Comparison was made on the prevalence of parasites in foals on five of the same farms in the 2004 study, which were part of a similar 14-farm project in 2003 (Lyons and Tolliver in Parasitol Res (2004) 92:400-404)... - Seasonal prevalence and intensity of hookworms (Uncinaria spp.) in California sea lion (Zalophus californianus) pups born in 2002 on San Miguel Island, CaliforniaE T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY 40546 0099, USA
Parasitol Res 96:127-32. 2005..No annual differences in intensity were found after adjusting for substrate and condition... - Photomicrographic images of some features of Uncinaria spp (Nematoda: Ancylostomatidae) from otariid pinnipedsE T Lyons
Department of Veterinary Science, University of Kentucky, Gluck Equine Research Center, Lexington, KY 40546 0099, USA
Parasitol Res 95:346-52. 2005..Information in the present paper should aid in this determination... - Prevalence of parasite eggs (Strongyloides westeri, Parascaris equorum, and strongyles) and oocysts (Emeria leuckarti) in the feces of Thoroughbred foals on 14 farms in central Kentucky in 2003E T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY 40546 0099, USA
Parasitol Res 92:400-4. 2004..6%) and for oocysts of Eimeria leuckarti (41.6%) in feces of foals. Foals had infections of S. westeri on six farms (42.9%), of P. equorum on 12 farms (86%), and of strongyles and E. leuckarti on all 14 farms (100%)... - Field test data on small strongyles in evaluation of activity of fenbendazole given once a day for 5 consecutive days to thoroughbred yearlings on two farms in Kentucky in 2002 and 2003E T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY 40546 0099, USA
Parasitol Res 91:312-5. 2003..Examination of cultures of fecal samples from these yearlings revealed that only small strongyle larvae were present. There was obvious FBZ-resistance of the small strongyles in yearlings on both farms at the dose rates used... - Population-S benzimidazole- and tetrahydropyrimidine-resistant small strongyles in a pony herd in Kentucky (1977-1999): effects of anthelmintic treatment on the parasites as determined in critical testsEugene Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY 40546 0099, USA
Parasitol Res 91:407-11. 2003..Numbers of small strongyles were highest in 1987 and 1999... - Resistance of population-B equine strongyles to thiabendazole, oxfendazole, and phenothiazine (1981 to 1987)J H Drudge
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington 40546 0099
Am J Vet Res 52:1308-12. 1991..This suggests a similar mode of action between phenothiaznie and the BZ compounds... - Control of cambendazole-resistant small strongyles (Population S) with oxibendazole in a pony band: an 8 year field test (1984-1992)E T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington 40546 0099
Vet Parasitol 52:271-7. 1994..However, reductions of the counts were the lowest for the last year of the study... - Natural superinfection of Parascaris equorum in a stall-confined orphan horse foalE T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington 40546 0099, USA
Vet Parasitol 66:119-23. 1996..The foal had been observed repeatedly eating its own feces and the question is posed as to whether "recycling' of P. equorum eggs several times by coprophagy allowed time for embryonation and reinfection to occur... - Current prevalence of adult Uncinaria spp. in northern fur seal (Callorhinus ursinus) and California sea lion (Zalophus californianus) pups on San Miguel Island, California, with notes on the biology of these hookwormsE T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY 40546 0099, USA
Vet Parasitol 97:309-18. 2001..One hookworm larva was recovered from milk stripped from the teats of a stranded Z. californianus female at The Marine Mammal Center, Sausalito, CA... - Determination of the efficacy of pyrantel pamoate at the therapeutic dose rate against the tapeworm Anoplocephala perfoliata in equids using a modification of the critical test methodE T Lyons
Department of Veterinary Science, College of Agriculture, University of Kentucky, Gluck Equine Research Center, Lexington 40546 0099
Vet Parasitol 31:13-8. 1989..The combined average removal of A. perfoliata for both formulations was 87%. Two abnormal (triradiate) specimens of A. perfoliata were recovered; one from each of two different equids... - Controlled tests of activity of several antiparasitic compounds against natural infections of Haemonchus contortus and other helminths in lambs from a flock established in 1962E T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington 40546 0099
Am J Vet Res 54:406-10. 1993..Efficacy against immature H contortus for TBZ did not exceed 86%. Activity against immature and mature stages of this parasite was good overall for the other benzimidazoles.(ABSTRACT TRUNCATED AT 250 WORDS).. - Historical perspective of cyathostomes: prevalence, treatment and control programsE T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington 40546 0099, USA
Vet Parasitol 85:97-111; discussion 111-2, 215-25. 1999..Innovative parasite-control programs, relying less on drugs, need to be developed... - Prevalence of selected species of internal parasites in equids at necropsy in central Kentucky (1995-1999)E T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY 40546 0099, USA
Vet Parasitol 92:51-62. 2000..Compared to previous studies (about 15-25 years ago) in Kentucky, the present survey indicated the genera Onchocerca and Gasterophilus greatly declined but Thelazia, Anoplocephala, and Parascaris did not... - Continuance of studies on Population S benzimidazole-resistant small strongyles in a Shetland pony herd in Kentucky: effect of pyrantel pamoate (1992-1999)E T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, 40546 0099, Lexington, KY, USA
Vet Parasitol 94:247-56. 2001..The previously reported ineffective activity of OBZ on this population of small strongyles continued. Data are presented on prevalence and drug activity on several species of internal parasites besides small strongyles... - Transmission of endoparasites in horse foals born on the same pasture on a farm in central Kentucky (1996-1999)E T Lyons
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY 40546 0099, USA
Vet Parasitol 97:113-21. 2001..Clinical problems associated with parasitism were not observed in any of the 92 foals in the long-term investigation... - Shortened strongyle-type egg reappearance periods in naturally infected horses treated with moxidectin and failure of a larvicidal dose of fenbendazole to reduce fecal egg countsM G Rossano
Department of Animal and Food Sciences, 611 WP Garrigus Bldg, University of Kentucky, Lexington, KY 40546, USA
Vet Parasitol 173:349-52. 2010..Results of this study do not support the use of the larvicidal dose of FBZ for small strongyle control. Larger field studies will be needed to investigate whether egg reappearance periods are shortening for MOX-treated horses... - Strongyloidiasis in a Cope's grey tree frog (Hyla chrysoscelis)J C Patterson-Kane
Livestock Disease Diagnostic Center, Department of Veterinary Science, University of Kentucky, 1429 Newtown Pike, Lexington, Kentucky 40511-1280, USA
J Zoo Wildl Med 32:106-10. 2001..Intestinal strongyloidiasis should be considered as a cause for protein-losing enteropathy and death in frogs... - Contrasting effects of heterozygosity on survival and hookworm resistance in California sea lion pupsKarina Acevedo-Whitehouse
Laboratory of Molecular Ecology, Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK
Mol Ecol 15:1973-82. 2006..Our study could have important implications for the conservation of small, isolated or threatened populations, particularly when they are at a risk of facing pathogenic challenges...