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United States Department of Agriculture

Agricultural Research Service

Timothy Welch (Tim)
Microbiologist


Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Investigating the effectiveness of peracetic acid to reduce post-vaccination Saprolegnia spp.-associated mortality in Atlantic salmon parr while assessing impact on nitrification in recirculation aquaculture systems -
Good, C., Davidson, J., Straus, D.L., Harper, S.B., Marancik, D., Welch, T.J., Lepine, C., Wolters, W.R., Peterson, B.C., Pedersen, L., Phuntumart, V., Summerfelt, S. 2016. Investigating the effectiveness of peracetic acid to reduce post-vaccination Saprolegnia spp.-associated mortality in Atlantic salmon parr while assessing impact on nitrification in recirculation aquaculture systems [abstract]. Aquaculture Europe 2016 - Book of Abstracts, Edinburgh, September 20-23, 2016, Scotland. p. 397-398.
Virulence and molecular variation of Flavobacterium columnare affecting rainbow trout in ID, USA -
Evenhuis, J., Mohammad, H., Lapatra, S.E., Welch, T.J., Arias, C. 2016. Virulence and molecular variation of Flavobacterium columnare affecting rainbow trout in ID, USA. Aquaculture. 464:106-110. doi: 10.1016/j.aquaculture.2016.06.017.
Draft genome sequence of Lactococcus garvieae str. PAQ102015-99, an outbreak strain isolated from a commercial trout farm in the Northwestern United States. -
Nelson, M., Varney, J., Welch, T.J., Graf, J. 2016. Draft genome sequence of Lactococcus garvieae str. PAQ102015-99, an outbreak strain isolated from a commercial trout farm in the Northwestern United States.. Genome Announcements. 4(4):e00781-16. doi:10.1128/genomeA.00781-16.
Fish Viruses and Bacteria: Pathobiology and Protection -
Evaluation of genome-enabled selection for bacterial cold water disease resistance using progeny performance data in Rainbow Trout: Insights on genotyping methods and genomic prediction models -
Vallejo, R.L., Leeds, T.D., Fragomeni, B.O., Gao, G., Hernandez, A.G., Misztal, I., Welch, T.J., Wiens, G.D., Palti, Y. 2016. Evaluation of genome-enabled selection for bacterial cold water disease resistance using progeny performance data in Rainbow Trout: Insights on genotyping methods and genomic prediction models. Frontiers in Livestock Genomics. doi: 10.3389/fgene.2016.00096.
Efficacy testing of a 35 year old commercially produced Yersinia ruckeri bacterin for the control of Enteric Redmouth ERM) Disease -
Lapatra, S., Welch, T.J. 2016. Efficacy testing of a 35 year old commercially produced Yersinia ruckeri bacterin for the control of Enteric Redmouth ERM) Disease. International Conference on Diseases of Fish and Shellfish. P-O-025.
An outbreak of Plesimonus Shigelloides in Zebrafish -
Hansen, J., Woodson, J., Deas, E., Mcpherson, V., Welch, T.J. 2016. An outbreak of Plesimonus Shigelloides in Zebrafish. International Conference on Diseases of Fish and Shellfish. P540.
Assessing the impact of swimming exercise and the relative susceptibility of rainbow trout oncorhynchus mykiss (walbaum) and atlantic salmon salmo salar L. following injection challenge with weissella ceti Reprint Icon -
Good, C., May, T., Crouse, C., Summerfelt, S., Welch, T.J. 2016. Assessing the impact of swimming exercise and the relative susceptibility of rainbow trout oncorhynchus mykiss (walbaum) and atlantic salmon salmo salar L. following injection challenge with weissella ceti. Journal of Fish Diseases. 39(11): 1387-1391.
Yersinia ruckeri lipopolysaccharide is necessary and sufficient for eliciting a protective immune response in rainbow trout (Oncorhynchus mykiss, Walbaum) -
Welch, T.J., Lapatra, S. 2016. Yersinia ruckeri lipopolysaccharide is necessary and sufficient for eliciting a protective immune response in rainbow trout (Oncorhynchus mykiss, Walbaum). Fish and Shellfish Immunology. 49:420-426. doi:10.1016/j.fsi.2015.12.037
Intragenomic heterogeneity in the 16S rRNA genes of Flavobacterium columnare and standard protocol for genomovar assignment -
Lafrentz, B.R., Waldbieser, G.C., Welch, T.J., Shoemaker, C.A. 2015. Intragenomic heterogeneity in the 16S rRNA genes of Flavobacterium columnare and standard protocol for genomovar assignment. Flavobacterium 2015. p. 17.
Flagellar regulation in Yersinia ruckeri during infection -
Snyder, A.K., Welch, T.J. 2015. Flagellar regulation in Yersinia ruckeri during infection [abstract]. European Association of Fish Pathologists. p. O-102.
Intragenomic heterogeneity in the 16S rRNA genes of Flavobacterium columnare and standard protocol for genomovar assignment -
Lafrentz, B.R., Waldbieser, G.C., Welch, T.J., Shoemaker, C.A. 2015. Intragenomic heterogeneity in the 16S rRNA genes of Flavobacterium columnare and standard protocol for genomovar assignment [abstract]. European Association of Fish Pathologists. p. 105.
Systemic granuloma observed in Atlantic salmon Salmo salar raised to market size in a freshwater recirculation aquaculture system Reprint Icon -
Good, C., Marancik, D.P., Welch, T.J., May, T., Davidson, J., Summerfelt, S. 2015. Systemic granuloma observed in Atlantic salmon Salmo salar raised to market size in a freshwater recirculation aquaculture system. Aquaculture Research. DOI: 10.1111/are.12790:1-5.
Flagella biosynthesis and regulation by the Rcs pathway within the fish pathogen Yersinia ruckeri during infection -
Snyder, A.K., Welch, T.J. 2015. Flagella biosynthesis and regulation by the Rcs pathway within the fish pathogen Yersinia ruckeri during infection. Pittsburgh Bacterial Meeting. Paper No. 50A.
Weissellosis: An Emerging Disease Of Farmed Rainbow Trout -
Welch, T.J., Hinshaw, J.M., Mitchell, H., Good, C.M., Marancik, D.P. 2015. Weissellosis: An Emerging Disease Of Farmed Rainbow Trout. Annual Eastern Fish Health Workshop. Paper No. 30A.
Rainbow trout (Oncorhynchus mykiss) resistance to columnaris disease is heritable and favorably correlated with bacterial cold water disease resistance -
Evenhuis, J., Leeds, T.D., Wiens, G.D., Marancik, D.P., Welch, T.J., Lapatra, S. 2015. Rainbow trout (Oncorhynchus mykiss) resistance to columnaris disease is heritable and favorably correlated with bacterial cold water disease resistance. Journal of Animal Science. DOI: 10.2527/jas.2014-8566.
Accuracy of genomic prediction for BCWD resistance in rainbow trout using different genotyping platforms and genomic selection models -
Vallejo, R.L., Leeds, T.D., Liu, S., Gao, G., Welch, T.J., Wiens, G.D., Palti, Y. 2015. Accuracy of genomic prediction for BCWD resistance in rainbow trout using different genotyping platforms and genomic selection models. Plant and Animal Genome Conference. P726.
Complete genome sequence of Yersinia ruckeri str. CSF007-82, etiologic agent of enteric redmouth disease in salmonid fish -
Nelson, M.C., Lapatra, S.E., Welch, T.J., Graf, J. 2015. Complete genome sequence of Yersinia ruckeri str. CSF007-82, etiologic agent of enteric redmouth disease in salmonid fish. Genome Announcements. 3(1):e01491-14. DOI:10.1128/genomeA.01491-14.
Diagnostic tools for rapid detection and quantification of Weissella ceti NC36 infections in rainbow trout -
Snyder, A.K., Hinshaw, J.M., Welch, T.J. 2015. Diagnostic tools for rapid detection and quantification of Weissella ceti NC36 infections in rainbow trout. Letters in Applied Microbiology. DOI: 10.1111/lam.12365.
Regulation of flagellum biosynthesis within the fish pathogen Yersinia ruckeri -
Snyder, A.K., Welch, T.J. 2014. Regulation of flagellum biosynthesis within the fish pathogen Yersinia ruckeri. American Society for Microbiology Annual Meeting. Paper No. 40A.
Weissellosis -
Welch, T.J., Marancik, D.P., Good, C.M. 2014. Weissellosis. American Fisheries Society Book Series. 1.3.4: 1-10. Accessible at: http://afs-fhs.org/bluebook/bluebook-index.php.
Complete genome sequence of Flavobacterium psychrophilum strain CSF259-93 used to select rainbow trout for increased genetic resistance against bacterial cold water disease -
Wiens, G.D., Lapatra, S.E., Welch, T.J., Rexroad III, C.E., Call, D.R., Cain, K.E., Lafrentz, B.R., Vaisvil, B., Schmitt, D.P., Kapatral, V. 2014. Complete genome sequence of Flavobacterium psychrophilum strain CSF259-93 used to select rainbow trout for increased genetic resistance against bacterial cold water disease. Genome Announcements. 2(5):e00889-14. DOI:10.1128/genomeA.0089-14.
Intragenomic heterogeneity in the 16S rRNA genes of Flavobacterium columnare and standard protocol for genomovar assignment -
Lafrentz, B.R., Waldbieser, G.C., Welch, T.J., Shoemaker, C.A. 2014. Intragenomic heterogeneity in the 16S rRNA genes of Flavobacterium columnare and standard protocol for genomovar assignment [abstract]. International Symposium on Aquatic Animal Health. p.92.
Identification Of O-antigen biosynthetic genes specific to Serovar 01 Yersinia Ruckeri: Role in virulence and protective immunity -
Welch, T.J., Lapatra, S.E. 2014. Identification Of O-antigen biosynthetic genes specific to Serovar 01 Yersinia Ruckeri: Role in virulence and protective immunity [abstract]. International Aquatic Animal Health Symposium Proceedings. Paper No. 32F.
Weissellosis – An important emerging disease in farmed rainbow trout -
Welch, T.J., Marancik, D.P., Good, C. 2014. Weissellosis – An important emerging disease in farmed rainbow trout [abstract]. International Aquatic Animal Health Symposium Proceedings. Paper No. 30A.
Weissellosis in trout aquaculture in North America: an aggressive vaccination campaign against an emerging pathogen -
Hinshaw, J.M., Welch, T.J., Mitchell, H. 2014. Weissellosis in trout aquaculture in North America: an aggressive vaccination campaign against an emerging pathogen [abstract]. World Aquaculture Society Meeting. Paper No. 268.
Accuracy of genomic selection for BCWD resistance in rainbow trout -
Vallejo, R.L., Leeds, T.D., Liu, S., Gao, G., Welch, T.J., Wiens, G.D., Palti, Y. 2014. Accuracy of genomic selection for BCWD resistance in rainbow trout [abstract]. World Congress of Genetics Applied in Livestock Production. Paper No. 788.
Identification of O-Antigen biosynthetic genes specific to Serovar 01 Yersinia Ruckeri: Role in virulence and protective immunity -
Welch, T.J., Lapatra, S. 2014. Identification of O-Antigen biosynthetic genes specific to Serovar 01 Yersinia Ruckeri: Role in virulence and protective immunity [abstract]. Annual Eastern Fish Health Workshop. A65.
Flavobacterium branchiophilum and F. succinicans associated with bacterial gill disease in rainbow trout Oncorhynchus mykiss (Walbaum) in water recirculation aquaculture systems -
Good, C., Davidson, J., Wiens, G.D., Welch, T.J., Summerfelt, S. 2014. Flavobacterium branchiophilum and F. succinicans associated with bacterial gill disease in rainbow trout Oncorhynchus mykiss (Walbaum) in water recirculation aquaculture systems. Journal of Fish Diseases. DOI: 10.1111/jfd.12249.
Transfer of serum and cells from Yersinia ruckeri vaccinated double-haploid Hot Creek Rainbow trout into outcross F1 progeny elucidates mechanisms of vaccine-induced protection Reprint Icon -
Evenhuis, J., Wiens, G.D., Wheeler, P., Welch, T.J., Lapatra, S.E., Thorgaard, G. 2013. Transfer of serum and cells from Yersinia ruckeri vaccinated double-haploid Hot Creek Rainbow trout into outcross F1 progeny elucidates mechanisms of vaccine-induced protection. Developmental and Comparative Immunology. 44: 145-151. DOI: 10.1016/j.dci.2013.12.004.
Validation of linkage between BCWD resistance and spleen size QTL on Omy19 in rainbow trout: Pleiotropy versus linkage -
Vallejo, R.L., Palti, Y., Liu, S., Marancik, D.P., Welch, T.J., Leeds, T.D., Evenhuis, J., Rexroad III, C.E., Wiens, G.D. 2014. Validation of linkage between BCWD resistance and spleen size QTL on Omy19 in rainbow trout: Pleiotropy versus linkage. Plant and Animal Genome Conference. 361.
Assessment of genetic correlation between bacterial cold water disease resistance and spleen index in a domesticated population of rainbow trout: Identification of QTL on chromosome Omy19 Reprint Icon -
Wiens, G.D., Vallejo, R.L., Leeds, T.D., Palti, Y., Hadidi, S., Liu, S., Evenhuis, J., Welch, T.J., Rexroad Iii, C.E. 2013. Assessment of genetic correlation between bacterial cold water disease resistance and spleen index in a domesticated population of rainbow trout: Identification of QTL on chromosome Omy19. PLoS One. 8(10): e75749: DOI: 10.1371/journal.pone.0075749.
Transferable green fluorescence-tagged pEI2 in Edwardsiella ictaluri Reprint Icon -
Evenhuis, J., Welch, T.J., Booth, N.J. 2013. Transferable green fluorescence-tagged pEI2 in Edwardsiella ictaluri. Diseases of Aquatic Organisms. 105:75–79.
Intragenomic heterogeneity in the 16S rRNA genes of Flavobacterium columnare and relevance to genomovar assignment -
Lafrentz, B.R., Waldbieser, G.C., Welch, T.J., Shoemaker, C.A. 2013. Intragenomic heterogeneity in the 16S rRNA genes of Flavobacterium columnare and relevance to genomovar assignment. Genbank. Accession Nos. KC912647-KC912684.
Intragenomic heterogeneity in the 16S rRNA genes of Flavobacterium columnare and standard protocol for genomovar assignment Reprint Icon -
Lafrentz, B.R., Waldbieser, G.C., Welch, T.J., Shoemaker, C.A. 2014. Intragenomic heterogeneity in the 16S rRNA genes of Flavobacterium columnare and standard protocol for genomovar assignment. Journal of Fish Diseases. 37(7):657-669.
Acute mortality, bacterial load and pathology of select lines of adult rainbow trout challenged with Weissella sp. NC36 Reprint Icon -
Marancik, D.P., Welch, T.J., Leeds, T.D., Wiens, G.D. 2013. Acute mortality, bacterial load and pathology of select lines of adult rainbow trout challenged with Weissella sp. NC36. Journal of Aquatic Animal Health. 25(4): 230-236.
Comparison of disease resistance between diploid, induced-triploid, and intercross-triploid rainbow trout including trout selected for resistance to Flavobacterium psychrophilum Reprint Icon -
Weber, G.M., Wiens, G.D., Welch, T.J., Hostuttler, M.A., Leeds, T.D. 2013. Comparison of disease resistance between diploid, induced-triploid, and intercross-triploid rainbow trout including trout selected for resistance to Flavobacterium psychrophilum. Aquaculture. 410-411, 66-71.
Aquacultured rainbow trout (Oncorhynchus mykiss) possess a large core intestinal microbiota that is resistant to variation in diet and rearing density -
Wong, S., Waldrop, T., Summerfelt, S., Davidson, J., Barrows, F., Kenney, P., Welch, T.J., Wiens, G.D., Snekvik, K., Rawls, J.F., Good, C. 2013. Aquacultured rainbow trout (Oncorhynchus mykiss) possess a large core intestinal microbiota that is resistant to variation in diet and rearing density. Applied and Environmental Microbiology. DOI:10.1128/AEM.00924-13.
Intragenomic heterogeneity in the 16S rRNA genes of Flavobacterium columnare and relevance to genomovar assignment -
Lafrentz, B.R., Waldbieser, G.C., Welch, T.J., Shoemaker, C.A. 2013. Intragenomic heterogeneity in the 16S rRNA genes of Flavobacterium columnare and relevance to genomovar assignment [abstract]. Annual Eastern Fish Health Workshop. p. 24.
Mortality associated with Weissellosis (Weissella sp.) in USA farmed rainbow trout: Potential for control by vaccination -
Welch, T.J., Good, C.M. 2013. Mortality associated with Weissellosis (Weissella sp.) in USA farmed rainbow trout: Potential for control by vaccination. Aquaculture. 388-391:122-127.
On-farm performance of rainbow trout (Oncorhynchus mykiss) selectively bred for resistance to bacterial cold water disease: effect of rearing environment on survival phenotype Reprint Icon -
Wiens, G.D., Lapatra, S.E., Welch, T.J., Evenhuis, J., Rexroad III, C.E., Leeds, T.D. 2013. On-farm performance of rainbow trout (Oncorhynchus mykiss) selectively bred for resistance to bacterial cold water disease: effect of rearing environment on survival phenotype. Aquaculture. 388-391:128-136.
Mapping QTL for spleen size and BCWD resistance in rainbow trout -
Vallejo, R.L., Palti, Y., Liu, S., Welch, T.J., Leeds, T.D., Evenhuis, J., Rexroad III, C.E., Wiens, G.D. 2013. Mapping QTL for spleen size and BCWD resistance in rainbow trout. Annual International Plant & Animal Genome Conference. P0508.
Genome sequence of Weissella ceti NC36, an emerging pathogen of farmed rainbow trout in the United States Reprint Icon -
Ladner, J.T., Welch, T.J., Whitehouse, C.A., Palacios, G.F. 2013. Genome sequence of Weissella ceti NC36, an emerging pathogen of farmed rainbow trout in the United States. Genome Announcements. 1(1) e00187-12: 1-2.
Mapping of QTL for bacterial cold water disease resistance in rainbow trout -
Palti, Y., Vallejo, R.L., Welch, T.J., Evenhuis, J., Leeds, T.D., Gao, G., Liu, S., Rexroad III, C.E., Wiens, G.D. 2013. Mapping of QTL for bacterial cold water disease resistance in rainbow trout. Aquaculture Conference Proceedings. P0296.
Enteric Redmouth Disease -
Mapping of QTL for bacterial cold water disease resistance in rainbow trout -
Palti, Y., Vallejo, R.L., Welch, T.J., Leeds, T.D., Evenhuis, J., Gao, G., Liu, S., Rexroad III, C.E., Wiens, G.D. 2012. Mapping of QTL for bacterial cold water disease resistance in rainbow trout [abstract]. International Symposium on Genetics in Aquaculture. p. 354.
Mapping of QTL for bacterial cold water disease resistance in rainbow trout -
Palti, Y., Vallejo, R.L., Welch, T.J., Leeds, T.D., Evenhuis, J., Liu, S., Rexroad III, C.E., Wiens, G.D. 2012. Mapping of QTL for bacterial cold water disease resistance in rainbow trout. Plant and Animal Genome Conference. P0662.
Detection of quantitative trait loci (QTL) for resistance to bacterial cold water disease and spleen size in rainbow trout -
Palti, Y., Vallejo, R.L., Welch, T.J., Evenhuis, J., Leeds, T.D., Liu, S., Rexroad III, C.E., Wiens, G.D. 2011. Detection of quantitative trait loci (QTL) for resistance to bacterial cold water disease and spleen size in rainbow trout. Aquaculture America Conference. 4.
Modified live Edwardsiella ictaluri vaccine, AQUAVAC-ESC, lacks multidrug resistance plasmids Reprint Icon -
Lafrentz, B.R., Welch, T.J., Shoemaker, C.A., Drennan, J.D., Klesius, P.H. 2011. Modified live Edwardsiella ictaluri vaccine, AQUAVAC-ESC, lacks multidrug resistance plasmids. Journal of Aquatic Animal Health. 23(4):195-199.
Rapid genotyping assays for the identification and differentiation of Yersinia ruckeri biotype 2 strains -
Welch, T.J. 2011. Rapid genotyping assays for the identification and differentiation of Yersinia ruckeri biotype 2 strains. Letters in Applied Microbiology. DOI: 10.1111/j.1472-765X.2011.03114.x.
Independent emergence of biotype 2 Yersinia ruckeri in the United States and Europe Reprint Icon -
Welch, T.J., Verner-Jeffreys, D.W., Dalsgaard, I., Wiklund, T., Evenhuis, J., Garcia Cabrera, J.A., Hinshaw, J.M., Drennan, J.D., Lapatra, S.E. 2011. Independent emergence of biotype 2 Yersinia ruckeri in the United States and Europe. Applied and Environmental Microbiology. 2011 May;77(10):3493-9
Characterisation of a serotype O1 Yersinia ruckeri isolate from the Isle of Man: further evidence that O antigen serotype is not a reliable indicator of virulence -
Verner-Jeffreys, D.W., Haig, S.J., Welch, T.J., Pond, M.J., Stone, D., Davies, R., Gardner, R. 2011. Characterisation of a serotype O1 Yersinia ruckeri isolate from the Isle of Man: further evidence that O antigen serotype is not a reliable indicator of virulence. European Association of Fish Pathologists. 31(3):86-91.
Comparative genomic analysis of bacteriophages specific to the channel catfish pathogen Edwardsiella ictaluri Reprint Icon -
Carrias, A., Welch, T.J., Waldbieser, G.C., Mead, D.A., Terhune, J.S., Liles, M.R. 2011. Comparative genomic analysis of bacteriophages specific to the channel catfish pathogen Edwardsiella ictaluri. Virology Journal. 8:6. DOI: 10.1186/1743-422X-8-6.
Detection of QTL for spleen size and disease resistance in rainbow trout -
Palti, Y., Vallejo, R.L., Welch, T.J., Leeds, T.D., Evenhuis, J., Liu, S., Rexroad III, C.E., Wiens, G.D. 2011. Detection of QTL for spleen size and disease resistance in rainbow trout. Plant and Animal Genome Conference. p. 643.
Preliminary field evaluation of rainbow trout selectively bred for increased resistance to bacterial cold water disease -
Wiens, G.D., Leeds, T.D., Lapatra, S., Wilson, C., Cavendar, W., Evenhuis, J., Welch, T.J., Silverstein, J., Rexroad III, C.E. 2011. Preliminary field evaluation of rainbow trout selectively bred for increased resistance to bacterial cold water disease. Aquaculture America Conference. 308.
Multiple independent emergence of biotype 2 Yersinia ruckeri in the United States and Europe -
Welch, T.J., Verner-Jeffreys, D. 2010. Multiple independent emergence of biotype 2 Yersinia ruckeri in the United States and Europe. International Aquatic Animal Health Symposium Proceedings. 6:107.
Evidence of major genes affecting resistance to bacterial cold water disease in rainbow trout using Bayesian methods of segregation analysis Reprint Icon -
Vallejo, R.L., Wiens, G.D., Rexroad III, C.E., Welch, T.J., Evenhuis, J., Leeds, T.D., Janss, L.L., Palti, Y. 2010. Evidence of major genes affecting resistance to bacterial cold water disease in rainbow trout using Bayesian methods of segregation analysis. Journal of Animal Science. 88:3814-3832.
Comparative susceptibility of Atlantic salmon and rainbow trout to Yersinia ruckeri: relationship to O antigen serotype and resistance to serum killing Reprint Icon -
Haig, S., Davies, R.L., Welch, T.J., Reese, A.R., Verner-Jefferies, D. 2010. Comparative susceptibility of Atlantic salmon and rainbow trout to Yersinia ruckeri: relationship to O antigen serotype and resistance to serum killing. Veterinary Microbiology. doi:10.1016/j.vetmic.2010.06.022
Antibiotic sensitivity and molecular analyses demonstrate a lack of IncA/C plasmid in modified live Edwardsiella ictaluri vaccine strain -
Lafrentz, B.R., Welch, T.J., Shoemaker, C.A., Klesius, P.H. 2010. Antibiotic sensitivity and molecular analyses demonstrate a lack of IncA/C plasmid in modified live Edwardsiella ictaluri vaccine strain [abstract]. Eastern Fish Health Workshop. p.77.
Microarray based analysis of Inc A/C Plasmids in Multidrug resistant Salmonella enterica -
Lindsey, R.L., Cray, P.J., Frye, J.G., Welch, T.J., Meinersmann, R.J. 2010. Microarray based analysis of Inc A/C Plasmids in Multidrug resistant Salmonella enterica. USDA Annual Food Safety Research Planning Meeting. February 16-19, 2010. Shepherdstown, WV.
Response to selection for bacterial cold water disease resistance in rainbow trout -
Leeds, T.D., Silverstein, J., Weber, G.M., Vallejo, R.L., Palti, Y., Rexroad III, C.E., Evenhuis, J., Hadidi, S., Welch, T.J., Wiens, G.D. 0210. Response to selection for bacterial cold water disease resistance in rainbow trout. Journal of Animal Science. 88:1936-1946.
An oligonucleotide microarray to characterize multidrug resistant plasmids -
Lindsey, R.L., Frye, J.G., Cray, P.J., Welch, T.J., Meinersmann, R.J. 2010. An oligonucleotide microarray to characterize multidrug resistant plasmids. Journal of Microbiological Methods. 81(2):96-100.
Inheritance of rainbow trout Oncorhynchus mykiss spleen size and correlation with bacterial cold water disease resistance -
Wiens, G.D., Vallejo, R.L., Leeds, T.D., Palti, Y., Evenhuis, J., Welch, T.J., Rexroad Iii, C.E. 2010. Inheritance of rainbow trout Oncorhynchus mykiss spleen size and correlation with bacterial cold water disease resistance. World Aquaculture Society Meeting 2010. Paper No. 87.
Evidence of major genes affecting bacterial cold water disease resistance in rainbow trout using Bayesian methods of complex segregation analysis -
Vallejo, R.L., Wiens, G.D., Rexroad Iii, C.E., Welch, T.J., Evenhuis, J., Leeds, T.D., Janss, L.L., Palti, Y. 2010. Evidence of major genes affecting bacterial cold water disease resistance in rainbow trout using Bayesian methods of complex segregation analysis. Plant and Animal Genome Conference XVIII. Paper No. 103.
High prevalence of multidrug-tolerant bacteria and associated antimicrobial resistance genes isolated from ornamental fish and their carriage water -
Verner-Jefferies, D., Welch, T.J., Schwarz, T., Pond, M.J., Woodward, M.J., Haig, S.J., Rimmer, G.S., Roberts, E., Morrison, V., Baker-Austin, C. 2009. High prevalence of multidrug-tolerant bacteria and associated antimicrobial resistance genes isolated from ornamental fish and their carriage water. PLoS One. 4(12):1-9.
Resistance of rainbow trout to Flavobacterium psychrophilum infection: integrating selective breeding and microbial genomics -
Wiens, G.D., Leeds, T.D., Vallejo, R.L., Palti, Y., Welch, T.J., Rexroad III, C.E. 2009. Resistance of rainbow trout to Flavobacterium psychrophilum infection: integrating selective breeding and microbial genomics. Flavobacterium Meeting.
Identification of flagellar motility genes in Yersinia ruckeri by transposon mutagenesis Reprint Icon -
Evenhuis, J., Lapatra, S.E., Verner-Jefferys, D.W., Dalsgaard, I., Welch, T.J. 2009. Identification of flagellar motility genes in Yersinia ruckeri by transposon mutagenesis. Applied and Environmental Microbiology. 75(20):6630-6633.
Response to selection for bacterial cold water disease resistance in rainbow trout -
Leeds, T.D., Silverstein, J., Vallejo, R.L., Palti, Y., Rexroad III, C.E., Evenhuis, J., Hadidi, S., Weber, G.M., Welch, T.J., Wiens, G.D. 2009. Response to selection for bacterial cold water disease resistance in rainbow trout. International Symposium on Genetics in Aquaculture.
Resistance of rainbow trout to Flavobacterium psychrophilum infection: integrating selective breeding and microbial genomics -
Wiens, G.D., Leeds, T.D., Vallejo, R.L., Palti, Y., Welch, T.J., Rexroad Iii, C.E. 2009. Resistance of rainbow trout to Flavobacterium psychrophilum infection: integrating selective breeding and microbial genomics. Flavobacterium 2009 Meeting. Paper No. 100.
Variable regions in Flavobacterium psychrophilum strains identified by comparative genomics: application to selective breeding for cold water disease resistance -
Wiens, G.D., Lapatra, S.E., Palti, Y., Vallejo, R.L., Leeds, T.D., Welch, T.J., Rexroad III, C.E. 2009. Variable regions in Flavobacterium psychrophilum strains identified by comparative genomics: application to selective breeding for cold water disease resistance. American Fishery Society (Fish Health Section) Proceedings.
Response to selection for bacterial cold water disease resistance in rainbow trout -
Leeds, T.D., Silverstein, J., Vallejo, R.L., Palti, Y., Rexroad III, C.E., Evenhuis, J., Hadidi, S., Weber, G.M., Welch, T.J., Wiens, G.D. 2009. Response to selection for bacterial cold water disease resistance in rainbow trout. American Fishery Society (Fish Health Section) Proceedings.
Comparative genomics of the IncA/C multidrug resistance plasmid family -
Fricle, F., Welch, T.J., Mcdermott, P., Mammel, M., Leclerc, E., White, D., Cebula, T., Ravel, J. 2009. Comparative genomics of the IncA/C multidrug resistance plasmid family. Journal of Bacteriology. 191(15):4750-4757.
Comparative genomics of the Flavobacterium psychrophilum Frp locus -
Wiens, G.D., Lapatra, S.E., Call, D.R., Welch, T.J. 2009. Comparative genomics of the Flavobacterium psychrophilum Frp locus. American Society for Microbiology Meeting.
Identification and characterization of flagellar biosynthetic genes in Yersinia ruckeri -
Evenhuis, J., Lapatra, S., Welch, T.J. 2009. Identification and characterization of flagellar biosynthetic genes in Yersinia ruckeri. Annual Eastern Fish Health Workshop.
Characterisation of geographically and temporally diverse Yersinia ruckeri isolates: evidence that UK and mainland European biotype 2 isolates represent different clonal groups Reprint Icon -
Wheeler, R.W., Davies, R.L., Dalsgaard, I., Garcia, J., Welch, T.J., Waqley, S., Bateman, K.S., Verner-Jeffreys, D.W. 2009. Characterization of geographically and temporally diverse Yersinia ruckeri isolates: evidence that UK and mainland European biotype 2 isolates represent different clonal groups. Diseases of Aquatic Organisms. 84:25-33.
Evidence of major genes for resistance to bacterial cold-water disease in rainbow trout using mixed inheritance multiple-threshold models and Bayesian segregation analysis -
Vallejo, R.L., Wiens, G.D., Welch, T.J., Rexroad Iii, C.E., Palti, Y. 2009. Evidence of major genes for resistance to bacterial cold-water disease in rainbow trout using mixed inheritance multiple-threshold models and Bayesian segregation analysis. Gordon Research Conference Proceedings.
Rainbow trout resistance to bacterial cold-water disease is moderately heritable and is not adversely correlated with growth Reprint Icon -
Silverstein, J., Vallejo, R.L., Palti, Y., Welch, T.J., Wiens, G.D., Rexroad Iii, C.E., Ducrocq, V., Leeds, T.D. 2008. Rainbow trout resistance to bacterial cold-water disease is moderately heritable and is not adversely correlated with growth. Journal of Animal Science. 87:860-867.
IncA/C Plasmid-Mediated Florfenicol Resistance in the Catfish Pathogen Edwardsiella ictaluri Reprint Icon -
Welch, T.J., Evenhuis, J., White, D.G., Mcdermott, P.F., Harbottle, H., Miller, R., Griffin, M., Wise, D. 2008. IncA/C Plasmid-Mediated Florfenicol Resistance in the Catfish Pathogen Edwardsiella ictaluri. Antimicrobial Agents and Chemotherapy. 53(2):845-846.
Characterization of a bacteriophage LPS depolymerase: potential role in disease control -
Welch, T.J. 2008. Characterization of a bacteriophage LPS depolymerase: potential role in disease control. Meeting Abstract. Edinburgh International Phage Conference. Paper No. 105.
Suggestive association of major histocompatibility IB genetic markers with resistance to bacterial cold water disease in rainbow trout (Oncorhynchus mykiss) -
Johnson, N., Vallejo, R.L., Silverstein, J., Welch, T.J., Wiens, G.D., Hallerman, E.M., Palti, Y. 2008. Suggestive association of major histocompatibility IB genetic markers with resistance to bacterial cold water disease in rainbow trout (Oncorhynchus mykiss). Marine Biotechnology. 10:429-437.
Spleen Size Predicts Resistance of Rainbow Trout to Flavobacterium psychrophilum Challenge -
Hadidi, S., Glenney, G., Welch, T.J., Silverstein, J., Wiens, G.D. 2008. Spleen Size Predicts Resistance of Rainbow Trout to Flavobacterium psychrophilum Challenge. Journal of Immunology. 180:4156-4165.
Cortisol Response to a Crowding Stress: Heritability and Association with Disease Resistance to Yersinia ruckeri in Rainbow Trout -
Weber, G.M., Vallejo, R.L., Lankford, S.E., Silverstein, J., Welch, T.J. 2008. Cortisol Response to a Crowding Stress: Heritability and Association with Disease Resistance to Yersinia ruckeri in Rainbow Trout. North American Journal of Aquaculture.
Recent Advances in Bacterial Coldwater Disease Research -
Wiens, G.D., Welch, T.J. 2007. Recent Advances in Bacterial Coldwater Disease Research. Trout Talk Pg 5-6.
Genome Sequence of Flavobacterium psychrophilum Strain CSF 259-93 and Characterization of a Large Cluster of Genes Containing Short Repeats -
Wiens, G.D., Welch, T.J., Rexroad III, C.E., Lapatra, S., Call, D.R., Hunnicutt, D., Bhattacharyya, A., Campbell, J., Walunas, T. 2007. Genome Sequence of Flavobacterium psychrophilum Strain CSF 259-93 and Characterization of a Large Cluster of Genes Containing Short Repeats. Meeting Abstract Pg 12.
Rainbow Trout Innate Immunity against Flavobacterium psychrophilum -
Hadidi, S., Glenney, G.W., Welch, T.J., Silverstein, J., Blazer, V., Wiens, G.D. 2007. Rainbow Trout Innate Immunity against Flavobacterium psychrophilum. Meeting Abstract Pg 35.
Associations of Markers Linked to Major Histocompatibility (MH) Regions With Disease Resistance in Rainbow Trout -
Palti, Y., Johnson, N., Rexroad III, C.E., Welch, T.J., Wiens, G.D., Silverstein, J., Vallejo, R.L. Associations of Markers Linked to Major Histocompatibility (MH) Regions With Disease Resistance in Rainbow Trout. Meeting Abstract.
Transcription termination Within the iron transport-biosynthesis operon of Vibrio anguillarum requires an antisense RNA -
Stork, M., Di Lorenzo, M., Welch, T.J., Crosa, J. 2007. Transcription termination Within the iron transport-biosynthesis operon of Vibrio anguillarum requires an antisense RNA. Journal of Bacteriology 189:(9), 3479-88.
Multiple Antimicrobial Resistance in Plague: An Emerging Public Health Risk -
Welch, T.J., Fricke, W.F., Rosso, M.L., Rasko, D.A., Mammel, M., Eppinger, M., Rosovitz, M.J., White, D.G., Mcdermott, P.F., Wagner, D., Rahalison, L., Leclerc, J.E., Hinshaw, J.M., Lindler, L.E., Cebula, T.A., Carniel, E., Ravel, J. 2007. Multiple Antimicrobial Resistance in Plague: An Emerging Public Health Risk. PLoS One. Vol.1 (3)1-6.
Distribution of Yersinia pestis pIP1202-like Multidrug Resistance Plasmids Among Foodborne Pathogens -
Welch, T.J., Fricke, W.F., Eppinger, M., Rosovitz, M.J., Mcdermott, P., White, D., Wiens, G.D., Ravel, J. 2007. Distribution of Yersinia pestis pIP1202-like Multidrug Resistance Plasmids Among Foodborne Pathogens. American Society of Microbiologists Abstracts.
Spleen Size Predicts Innate Resistance of Rainbow Trout to Flavobacterium psychrophilum Challenge -
Hadidi, S., Glenney, G., Welch, T.J., Silverstein, J., Wiens, G.D. 2007. Spleen Size Predicts Innate Resistance of Rainbow Trout to Flavobacterium psychrophilum Challenge. American Society for Microbiology.
Associations of Markers Linked to Major Histocompatibility (MH) Regions and to Other Immune Response Genes with Disease Resistance in Rainbow Trout -
Palti, Y., Johnson, N., Rexroad III, C.E., Welch, T.J., Wiens, G.D., Silverstein, J., Vallejo, R.L. 2006. Associations of Markers Linked to Major Histocompatibility (MH) Regions and to Other Immune Response Genes with Disease Resistance in Rainbow Trout. Plant and Animal Genome Abstracts Pg. 11.
Associations of Markers Linked to Major Histocompatibility (MH) Regions and to Other Immune Response Genes with Disease Resistance in Rainbow Trout -
Palti, Y., Johnson, N., Rexroad III, C.E., Welch, T.J., Wiens, G.D., Silverstein, J., Vallejo, R.L. 2006. Associations of Markers Linked to Major Histocompatibility (MH) Regions and to Other Immune Response Genes with Disease Resistance in Rainbow Trout. World Aquaculture Society Meeting.
GENOMIC AND FUNCTIONAL-GENETIC CHARACTERIZATION OF BACTERIOPHAGE NC10 REVEALS A NOVEL Yersinia ruckeri VIRULENCE NEUTRALIZING ACTIVITY -
Welch, T.J. 2006. Genomic and functional-genetic characterization of bacteriophage nc10 reveals a novel yersinia ruckeri virulence neutralizing activity. Meeting Abstract pg 272.
Cortisol response to a crowding stress: Heritability and association with disease resistance to Yersinia ruckeri in rainbow trout -
Weber, G.M., Lankford, S., Silverstein, J., Vallejo, R.L., Welch, T.J. 2007. Cortisol response to a crowding stress: Heritability and association with disease resistance to Yersinia ruckeri in rainbow trout. Book of Abstracts Aquaculture America.
CRACKING THE CODE: SELECTING FOR RESISTANCE AGAINST BACTERIAL COLD-WATER DISEASE -
Silverstein, J., Palti, Y., Vallejo, R.L., Welch, T.J., Wiens, G.D. 2006. Cracking the code: selecting for resistance against bacterial cold-water disease. Trout Talk.
SELECTIVE BREEDING AND GENETIC MAPPING OF DISEASE RESISTANCE IN RAINBOW TROUT -
Palti, Y., Rexroad Iii, C.E., Welch, T.J., Wiens, G.D., Silverstein, J., Vallejo, R.L. 2006. Selective breeding and genetic mapping of disease resistance in rainbow trout. Meeting Abstract. Presented at The 9th International Symposium of The International Association for Genetics in Aquaculture, June 26-30, 2006 at Montpellier, France. Meeting Book of Abstracts p. 81.
GENE EXPRESSION AND CELLULAR IMMUNE RESPONSE OF RAINBOW TROUT (ONCORHYNCHUS MYKISS) EXPOSED TO YERSINIA RUCKERI: A MODEL SYSTEM FOR UNDERSTANDING MECHANISMS OF TELEOST PROTECTIVE IMMUNITY -
Wiens, G.D., Lapatra, S., Palti, Y., Rexroad III, C.E., Yao, J., Welch, T.J. 2006. Gene expression and cellular immune response of rainbow trout (Oncorhynchus mykiss) exposed to Yersinia ruckeri: A model system for understanding mechanisms of teleost protective immunity. 10th International Congress, International Society of Developmental and Comparative Immunology, July 1 - 6, 2006. Meeting Abstract. Page 249.
IDENTIFICATION OF NOVEL RAINBOW TROUT (ONCHORYNCHUS MYKISS) CHEMOKINES, CXCD1 AND CXCD2: MRNA EXPRESSION FOLLOWING YERSINIA RUCKERI VACCINATION AND CHALLENGE -
Wiens, G.D., Glenney, G.W., Lapatra, S.E., Welch, T.J. 2006. Identification of novel rainbow trout (Onchorynchus mykiss) chemokines, cxcd1 and cxcd2: Mrna expression following Yersinia ruckeri vaccination and challenge. Immunogenetics. 2006 May;58(4):308-23. Epub 2006 Mar 29.
CHARACTERIZATION OF MAJOR HISTOCOMPATIBILITY (MH) HAPLOTYPES AND THEIR ASSOCIATION WITH DISEASE RESISTANCE IN RAINBOW TROUT -
Palti, Y., Rexroad III, C.E., Welch, T.J., Wiens, G.D., Silverstein, J. 2005. Characterization of major histocompatibility (MH) haplotypes and their association with desease resistance in rainbow trout. Plant and Animal Genome Conference. Abstract ID P643, page 262.
CHARACTERIZATION OF A BACTERIOPHAGE SPECIFIC FOR THE SALMONID PATHOGEN YERSINIA RUCKERI -
Welch, T.J. 2005. Characterizaion of a bacteriophage specific for the salmonid pathogen yersinia ruckeri. Evergreen International Phage Meeting. the Evergreen State College, Olympia, WA. p. A-43.
CONSTRUCTION OF A VIRULENT, GREEN FLUORESCENT PROTEIN-TAGGED YERSINIA RUCKERI AND DETECTION IN TROUT TISSUES AFTER INTRAPERITONEAL AND IMMERSION CHALLENGE -
Welch, T.J., Wiens, G.D. 2005. Construction of a virulent, green fluorescent protein-tagged yersinia ruckeri and detection in trout tissues after intraperitoneal and immersion challenge. Diseases of Aquatic Organisms. 67:267-272.
NOVEL ROLE OF THE LIPOPOLYSACCHARIDE O1-SIDE CHAIN IN FERRIC-SIDEROPHORE TRANSPORT AND VIRULENCE OF VIBRIO ANGUILLARUM -
Welch, T.J., Crosa, J. 2005. Novel role of the lipopolysaccharide o1-side chain in ferric-siderophore transport and virulence of vibrio anguillarum. Infection and Immunity Vol. 73 No 9, 5864-5872.
GENOMIC CHARACTERIZATION AND EXPRESSION ANALYSIS OF A TUMOR NECROSIS FACTOR SUPERFAMILY 13B (TNFSF 13B) HOMOLOGUE FROM RAINBOW TROUT (ONCORHYNCHUS MYKISS) -
Wiens, G.D., Gahr, S.A., Morrison, C., Palti, Y., Rexroad III, C.E., Rodriguez, M.F., Welch, T.J. 2004. Genomic characterization and expression analysis of a tumor necrosis factor superfamily 13b (tnfsf 13b) homologue from rainbow trout (oncorhynchus mykiss). International Immunology Congress p. 82C (abstract W15.15).
DEVELOPMENT OF A NOVEL STRATEGY FOR CLEARING FISH PATHOGENS FROM RECIRCULATING AQUACULTURE SYSTEMS USING BACTERIOPHAGE -
Brazil, B.L., Welch, T.J. 2004. Development of a novel strategy for clearing fish pathogens from recirculating aquaculture systems using bacteriophage. International Aquaculture Meeting. P. 41.
MOLECULAR CHARACTERIZATION OF A PUTATIVE TUMOR NECROSIS FACTOR SUPERFAMILY 13B (TNFSF 13B) HOMOLOGUE FROM RAINBOW TROUT (ONCORHYNCHUS MYKISS) -
Wiens, G.D., Palti, Y., Rexroad III, C.E., Welch, T.J. 2003. Molecular characterization of a putative tumor necrosis factor superfamily 13b (tnfsf 13b) homologue from rainbow trout (oncorhynchus mykiss). Immunology Research Workshop. p.35.
CHARACTERIZATION AND MAPPING OF IMMUNE RESPONSE GENES IN RAINBOW TROUT (ONCORHYNCHUS MYKISS) -
Rodriguez, M.F., Hansen, J., Wiens, G.D., Welch, T.J., Palti, Y. 2003. Characterization and mapping of immune response genes in rainbow trout (oncorhynchus mykiss). Meeting Abstract. Nov 9-15, 2003. p.4.
IDENTIFICATION OF A SIDEROPHORE BIOSYNTHETIC GENE FROM THE FISH PATHOGEN AEROMONAS SALMONICIDA -
Welch, T.J., Di Lorenzo, M., Crosa, J. 2003. Identification of a siderophore biosynthetic gene from the fish pathogen aeromonas salmonicida. 103d American Society for Microbiology Meeting. p.216.
SEQUENCE OF VIRULENCE PLASMID PJM1 FROM THE MARINE FISH PATHOGEN VIBRIO ANGUILLARUM STRAIN 775 -
Di Lorenzo, M., Stork, M., Tolmasky, M.E., Actis, L.A., Farrell, D., Welch, T.J., Crosa, L.M., Wertheimer, A.M., Chen, Q., Salinas, P. 2003. Sequence of virulence plasmid pjm1 from the marine fish pathogen vibrio anguillarum strain 775. Journal of Bacteriology. 185(19):5822.
Last Modified: 8/26/2016
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