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Wild ruminants as reservoirs of domestic livestock gastrointestinal nematodes.

Barone CD, Wit J, Hoberg EP, Gilleard JS, Zarlenga DS.

Vet Parasitol. 2020 Mar;279:109041. doi: 10.1016/j.vetpar.2020.109041. Epub 2020 Jan 28.


Assessing anthelmintic resistance risk in the post-genomic era: a proof-of-concept study assessing the potential for widespread benzimidazole resistant gastrointestinal nematodes in North American cattle and bison.

Avramenko RW, Redman EM, Gilleard JS.

Parasitology. 2020 Mar 6:1-39. doi: 10.1017/S0031182020000426. [Epub ahead of print] No abstract available.


Clonemate cotransmission supports a role for kin selection in a puppeteer parasite.

Criscione CD, van Paridon BJ, Gilleard JS, Goater CP.

Proc Natl Acad Sci U S A. 2020 Mar 17;117(11):5970-5976. doi: 10.1073/pnas.1922272117. Epub 2020 Mar 2.


The biogeography of the caribou lungworm, Varestrongylus eleguneniensis (Nematoda: Protostrongylidae) across northern North America.

Verocai GG, Hoberg EP, Simard M, Beckmen KB, Musiani M, Wasser S, Cuyler C, Manseau M, Chaudhry UN, Kashivakura CK, Gilleard JS, Kutz SJ.

Int J Parasitol Parasites Wildl. 2020 Jan 8;11:93-102. doi: 10.1016/j.ijppaw.2020.01.001. eCollection 2020 Apr.


Multiple drug resistance in the canine hookworm Ancylostoma caninum: an emerging threat?

Jimenez Castro PD, Howell SB, Schaefer JJ, Avramenko RW, Gilleard JS, Kaplan RM.

Parasit Vectors. 2019 Dec 9;12(1):576. doi: 10.1186/s13071-019-3828-6.


Validation of ITS-2 rDNA nemabiome sequencing for ovine gastrointestinal nematodes and its application to a large scale survey of UK sheep farms.

Redman E, Queiroz C, Bartley DJ, Levy M, Avramenko RW, Gilleard JS.

Vet Parasitol. 2019 Nov;275:108933. doi: 10.1016/j.vetpar.2019.108933. Epub 2019 Oct 1.


Similarities and differences in the biotransformation and transcriptomic responses of Caenorhabditis elegans and Haemonchus contortus to five different benzimidazole drugs.

Stasiuk SJ, MacNevin G, Workentine ML, Gray D, Redman E, Bartley D, Morrison A, Sharma N, Colwell D, Ro DK, Gilleard JS.

Int J Parasitol Drugs Drug Resist. 2019 Dec;11:13-29. doi: 10.1016/j.ijpddr.2019.09.001. Epub 2019 Sep 9.


The confounding effects of high genetic diversity on the determination and interpretation of differential gene expression analysis in the parasitic nematode Haemonchus contortus.

Rezansoff AM, Laing R, Martinelli A, Stasiuk S, Redman E, Bartley D, Holroyd N, Devaney E, Sargison ND, Doyle S, Cotton JA, Gilleard JS.

Int J Parasitol. 2019 Oct;49(11):847-858. doi: 10.1016/j.ijpara.2019.05.012. Epub 2019 Sep 13.


Prevalence, fecal egg counts, and species identification of gastrointestinal nematodes in replacement dairy heifers in Canada.

Scott H, Gilleard JS, Jelinski M, Barkema HW, Redman EM, Avramenko RW, Luby C, Kelton DF, Bauman CA, Keefe G, Dubuc J, Uehlinger FD.

J Dairy Sci. 2019 Sep;102(9):8251-8263. doi: 10.3168/jds.2018-16115. Epub 2019 Jul 17.


Rethinking Graduate Education in Parasitology: A Case Study.

McKay DM, Summers M, Buret AG, Emmett T, Gilleard JS.

Trends Parasitol. 2019 Sep;35(9):665-668. doi: 10.1016/ Epub 2019 May 29. No abstract available.


Mating barriers between genetically divergent strains of the parasitic nematode Haemonchus contortus suggest incipient speciation.

Sargison ND, Redman E, Morrison AA, Bartley DJ, Jackson F, Hoberg E, Gilleard JS.

Int J Parasitol. 2019 Jun;49(7):531-540. doi: 10.1016/j.ijpara.2019.02.008. Epub 2019 Apr 26.


Quantitative genetics of gastrointestinal strongyle burden and associated body condition in feral horses.

Gold S, Regan CE, McLoughlin PD, Gilleard JS, Wilson AJ, Poissant J.

Int J Parasitol Parasites Wildl. 2019 Apr 6;9:104-111. doi: 10.1016/j.ijppaw.2019.03.010. eCollection 2019 Aug.


Population genomic and evolutionary modelling analyses reveal a single major QTL for ivermectin drug resistance in the pathogenic nematode, Haemonchus contortus.

Doyle SR, Illingworth CJR, Laing R, Bartley DJ, Redman E, Martinelli A, Holroyd N, Morrison AA, Rezansoff A, Tracey A, Devaney E, Berriman M, Sargison N, Cotton JA, Gilleard JS.

BMC Genomics. 2019 Mar 15;20(1):218. doi: 10.1186/s12864-019-5592-6.


Deep amplicon sequencing as a powerful new tool to screen for sequence polymorphisms associated with anthelmintic resistance in parasitic nematode populations.

Avramenko RW, Redman EM, Melville L, Bartley Y, Wit J, Queiroz C, Bartley DJ, Gilleard JS.

Int J Parasitol. 2019 Jan;49(1):13-26. doi: 10.1016/j.ijpara.2018.10.005. Epub 2018 Nov 22.


MIPhy: identify and quantify rapidly evolving members of large gene families.

Curran DM, Gilleard JS, Wasmuth JD.

PeerJ. 2018 May 29;6:e4873. doi: 10.7717/peerj.4873. eCollection 2018.


High species diversity of trichostrongyle parasite communities within and between Western Canadian commercial and conservation bison herds revealed by nemabiome metabarcoding.

Avramenko RW, Bras A, Redman EM, Woodbury MR, Wagner B, Shury T, Liccioli S, Windeyer MC, Gilleard JS.

Parasit Vectors. 2018 May 15;11(1):299. doi: 10.1186/s13071-018-2880-y.


The optimal timing of post-treatment sampling for the assessment of anthelminthic drug efficacy against Ascaris infections in humans.

Levecke B, Easton AV, Cools P, Albonico M, Ame S, Gilleard JS, Keiser J, Montresor A, Prichard R, Vlaminck J, Vercruysse J.

Int J Parasitol Drugs Drug Resist. 2018 Apr;8(1):67-69. doi: 10.1016/j.ijpddr.2017.12.004. Epub 2018 Jan 13.


A Genome Resequencing-Based Genetic Map Reveals the Recombination Landscape of an Outbred Parasitic Nematode in the Presence of Polyploidy and Polyandry.

Doyle SR, Laing R, Bartley DJ, Britton C, Chaudhry U, Gilleard JS, Holroyd N, Mable BK, Maitland K, Morrison AA, Tait A, Tracey A, Berriman M, Devaney E, Cotton JA, Sargison ND.

Genome Biol Evol. 2018 Feb 1;10(2):396-409. doi: 10.1093/gbe/evx269.


Increased Expression of a MicroRNA Correlates with Anthelmintic Resistance in Parasitic Nematodes.

Gillan V, Maitland K, Laing R, Gu H, Marks ND, Winter AD, Bartley D, Morrison A, Skuce PJ, Rezansoff AM, Gilleard JS, Martinelli A, Britton C, Devaney E.

Front Cell Infect Microbiol. 2017 Nov 6;7:452. doi: 10.3389/fcimb.2017.00452. eCollection 2017.


A method for single pair mating in an obligate parasitic nematode.

Sargison ND, Redman E, Morrison AA, Bartley DJ, Jackson F, Naghra-van Gijzel H, Holroyd N, Berriman M, Cotton JA, Gilleard JS.

Int J Parasitol. 2018 Feb;48(2):159-165. doi: 10.1016/j.ijpara.2017.08.010. Epub 2017 Oct 27.


A panel of microsatellite markers to discriminate and study interactions between Haemonchus contortus and Haemonchus placei.

Santos MC, Redman E, Amarante MRV, Gilleard JS, Amarante AFT.

Vet Parasitol. 2017 Sep 15;244:71-75. doi: 10.1016/j.vetpar.2017.07.011. Epub 2017 Jul 20.


The use of nemabiome metabarcoding to explore gastro-intestinal nematode species diversity and anthelmintic treatment effectiveness in beef calves.

Avramenko RW, Redman EM, Lewis R, Bichuette MA, Palmeira BM, Yazwinski TA, Gilleard JS.

Int J Parasitol. 2017 Nov;47(13):893-902. doi: 10.1016/j.ijpara.2017.06.006. Epub 2017 Aug 7.


Population genetic analysis informs the invasion history of the emerging trematode Dicrocoelium dendriticum into Canada.

van Paridon BJ, Colwell DD, Goater CP, Gilleard JS.

Int J Parasitol. 2017 Nov;47(13):845-856. doi: 10.1016/j.ijpara.2017.04.006. Epub 2017 Jun 29.


Resequencing Helminth Genomes for Population and Genetic Studies.

Wit J, Gilleard JS.

Trends Parasitol. 2017 May;33(5):388-399. doi: 10.1016/ Epub 2017 Mar 16. Review.


Life Cycle, Host Utilization, and Ecological Fitting for Invasive Lancet Liver Fluke, Dicrocoelium dendriticum, Emerging in Southern Alberta, Canada.

van Paridon BJ, Gilleard JS, Colwell DD, Goater CP.

J Parasitol. 2017 Jun;103(3):207-212. doi: 10.1645/16-140. Epub 2017 Feb 17.


Onchocerca lupi Nematodes in Dogs Exported from the United States into Canada.

Verocai GG, Conboy G, Lejeune M, Marron F, Hanna P, MacDonald E, Skorobohach B, Wilcock B, Kutz SJ, Gilleard JS.

Emerg Infect Dis. 2016 Aug;22(8):1477-9. doi: 10.3201/eid2208.151918.


Microsatellite marker analysis of Haemonchus contortus populations from Pakistan suggests that frequent benzimidazole drug treatment does not result in a reduction of overall genetic diversity.

Chaudhry U, Redman EM, Ashraf K, Shabbir MZ, Rashid MI, Ashraf S, Gilleard JS.

Parasit Vectors. 2016 Jun 17;9(1):349. doi: 10.1186/s13071-016-1624-0.


Haemonchus contortus: Genome Structure, Organization and Comparative Genomics.

Laing R, Martinelli A, Tracey A, Holroyd N, Gilleard JS, Cotton JA.

Adv Parasitol. 2016;93:569-98. doi: 10.1016/bs.apar.2016.02.016. Epub 2016 Apr 11. Review.


Genetic Diversity and Population Structure of Haemonchus contortus.

Gilleard JS, Redman E.

Adv Parasitol. 2016;93:31-68. doi: 10.1016/bs.apar.2016.02.009. Epub 2016 May 10. Review.


Evidence from two independent backcross experiments supports genetic linkage of microsatellite Hcms8a20, but not other candidate loci, to a major ivermectin resistance locus in Haemonchus contortus.

Rezansoff AM, Laing R, Gilleard JS.

Int J Parasitol. 2016 Sep;46(10):653-61. doi: 10.1016/j.ijpara.2016.04.007. Epub 2016 May 20.


Characterization of nine microsatellite loci for Dicrocoelium dendriticum, an emerging liver fluke of ungulates in North America, and their use to detect clonemates and random mating.

van Paridon BJ, Goater CP, Gilleard JS, Criscione CD.

Mol Biochem Parasitol. 2016 May;207(1):19-22. doi: 10.1016/j.molbiopara.2016.05.003. Epub 2016 May 14.


Negative covariance between parasite load and body condition in a population of feral horses.

Debeffe L, McLoughlin PD, Medill SA, Stewart K, Andres D, Shury T, Wagner B, Jenkins E, Gilleard JS, Poissant J.

Parasitology. 2016 Jul;143(8):983-97. doi: 10.1017/S0031182016000408.


Exploring the Gastrointestinal "Nemabiome": Deep Amplicon Sequencing to Quantify the Species Composition of Parasitic Nematode Communities.

Avramenko RW, Redman EM, Lewis R, Yazwinski TA, Wasmuth JD, Gilleard JS.

PLoS One. 2015 Dec 2;10(12):e0143559. doi: 10.1371/journal.pone.0143559. eCollection 2015.


Genetic evidence for the spread of a benzimidazole resistance mutation across southern India from a single origin in the parasitic nematode Haemonchus contortus.

Chaudhry U, Redman EM, Raman M, Gilleard JS.

Int J Parasitol. 2015 Sep;45(11):721-8. doi: 10.1016/j.ijpara.2015.04.007. Epub 2015 Jun 19.


The emergence of resistance to the benzimidazole anthlemintics in parasitic nematodes of livestock is characterised by multiple independent hard and soft selective sweeps.

Redman E, Whitelaw F, Tait A, Burgess C, Bartley Y, Skuce PJ, Jackson F, Gilleard JS.

PLoS Negl Trop Dis. 2015 Feb 6;9(2):e0003494. doi: 10.1371/journal.pntd.0003494. eCollection 2015 Feb.


The cytochrome P450 family in the parasitic nematode Haemonchus contortus.

Laing R, Bartley DJ, Morrison AA, Rezansoff A, Martinelli A, Laing ST, Gilleard JS.

Int J Parasitol. 2015 Mar;45(4):243-51. doi: 10.1016/j.ijpara.2014.12.001. Epub 2014 Dec 31.


Resurrection and redescription of Varestrongylus alces (Nematoda: Protostrongylidae), a lungworm of the Eurasian moose (Alces alces), with report on associated pathology.

Verocai GG, Hoberg EP, Vikøren T, Handeland K, Ytrehus B, Rezansoff AM, Davidson RK, Gilleard JS, Kutz SJ.

Parasit Vectors. 2014 Dec 17;7:557. doi: 10.1186/s13071-014-0557-8.


Recent advances in candidate-gene and whole-genome approaches to the discovery of anthelmintic resistance markers and the description of drug/receptor interactions.

Kotze AC, Hunt PW, Skuce P, von Samson-Himmelstjerna G, Martin RJ, Sager H, Krücken J, Hodgkinson J, Lespine A, Jex AR, Gilleard JS, Beech RN, Wolstenholme AJ, Demeler J, Robertson AP, Charvet CL, Neveu C, Kaminsky R, Rufener L, Alberich M, Menez C, Prichard RK.

Int J Parasitol Drugs Drug Resist. 2014 Aug 13;4(3):164-84. doi: 10.1016/j.ijpddr.2014.07.007. eCollection 2014 Dec. Review.


Genetic evidence for hybridisation between Haemonchus contortus and Haemonchus placei in natural field populations and its implications for interspecies transmission of anthelmintic resistance.

Chaudhry U, Redman EM, Abbas M, Muthusamy R, Ashraf K, Gilleard JS.

Int J Parasitol. 2015 Feb;45(2-3):149-59. doi: 10.1016/j.ijpara.2014.09.002. Epub 2014 Nov 4.


Figmop: a profile HMM to identify genes and bypass troublesome gene models in draft genomes.

Curran DM, Gilleard JS, Wasmuth JD.

Bioinformatics. 2014 Nov 15;30(22):3266-7. doi: 10.1093/bioinformatics/btu544. Epub 2014 Aug 12.


Haemonchus contortus as a paradigm and model to study anthelmintic drug resistance.

Gilleard JS.

Parasitology. 2013 Oct;140(12):1506-22. doi: 10.1017/S0031182013001145. Review.


The genome and transcriptome of Haemonchus contortus, a key model parasite for drug and vaccine discovery.

Laing R, Kikuchi T, Martinelli A, Tsai IJ, Beech RN, Redman E, Holroyd N, Bartley DJ, Beasley H, Britton C, Curran D, Devaney E, Gilabert A, Hunt M, Jackson F, Johnston SL, Kryukov I, Li K, Morrison AA, Reid AJ, Sargison N, Saunders GI, Wasmuth JD, Wolstenholme A, Berriman M, Gilleard JS, Cotton JA.

Genome Biol. 2013 Aug 28;14(8):R88. doi: 10.1186/gb-2013-14-8-r88.


Characterization and comparative analysis of the complete Haemonchus contortus β-tubulin gene family and implications for benzimidazole resistance in strongylid nematodes.

Saunders GI, Wasmuth JD, Beech R, Laing R, Hunt M, Naghra H, Cotton JA, Berriman M, Britton C, Gilleard JS.

Int J Parasitol. 2013 May;43(6):465-75. doi: 10.1016/j.ijpara.2012.12.011. Epub 2013 Feb 14.


Hepatogenous photosensitisation in Scottish sheep casued by Dicrocoelium dendriticum.

Sargison ND, Baird GJ, Sotiraki S, Gilleard JS, Busin V.

Vet Parasitol. 2012 Oct 26;189(2-4):233-7. doi: 10.1016/j.vetpar.2012.04.018. Epub 2012 Apr 19.


A survey of the trichostrongylid nematode species present on UK sheep farms and associated anthelmintic control practices.

Burgess CG, Bartley Y, Redman E, Skuce PJ, Nath M, Whitelaw F, Tait A, Gilleard JS, Jackson F.

Vet Parasitol. 2012 Oct 26;189(2-4):299-307. doi: 10.1016/j.vetpar.2012.04.009. Epub 2012 Apr 19.


Introgression of ivermectin resistance genes into a susceptible Haemonchus contortus strain by multiple backcrossing.

Redman E, Sargison N, Whitelaw F, Jackson F, Morrison A, Bartley DJ, Gilleard JS.

PLoS Pathog. 2012 Feb;8(2):e1002534. doi: 10.1371/journal.ppat.1002534. Epub 2012 Feb 16.


The transcriptional response of Caenorhabditis elegans to Ivermectin exposure identifies novel genes involved in the response to reduced food intake.

Laing ST, Ivens A, Butler V, Ravikumar SP, Laing R, Woods DJ, Gilleard JS.

PLoS One. 2012;7(2):e31367. doi: 10.1371/journal.pone.0031367. Epub 2012 Feb 14. Erratum in: PLoS One. 2012;7(8). doi:10.1371/annotation/259d774f-6c58-4df8-bce5-74a3c9160270.


Diversity in parasitic nematode genomes: the microRNAs of Brugia pahangi and Haemonchus contortus are largely novel.

Winter AD, Weir W, Hunt M, Berriman M, Gilleard JS, Devaney E, Britton C.

BMC Genomics. 2012 Jan 4;13:4. doi: 10.1186/1471-2164-13-4.


Annotation of two large contiguous regions from the Haemonchus contortus genome using RNA-seq and comparative analysis with Caenorhabditis elegans.

Laing R, Hunt M, Protasio AV, Saunders G, Mungall K, Laing S, Jackson F, Quail M, Beech R, Berriman M, Gilleard JS.

PLoS One. 2011;6(8):e23216. doi: 10.1371/journal.pone.0023216. Epub 2011 Aug 15.


Characterization of the xenobiotic response of Caenorhabditis elegans to the anthelmintic drug albendazole and the identification of novel drug glucoside metabolites.

Laing ST, Ivens A, Laing R, Ravikumar S, Butler V, Woods DJ, Gilleard JS.

Biochem J. 2010 Dec 15;432(3):505-14. doi: 10.1042/BJ20101346.


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