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Timothy Welch (Tim)
Research Microbiologist


Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Limited experimental susceptibility of post-smolt Atlantic salmon (Salmo salar) to an emergent strain of Vibrio anguillarum serotype-O3 - (Peer Reviewed Journal)
Lifgren, D.L., Turner, S.M., Welch, T.J., Bouchard, D., Polinski, M.P. 2024. Limited experimental susceptibility of post-smolt Atlantic salmon (Salmo salar) to an emergent strain of Vibrio anguillarum serotype-O3. Aquaculture Journal. 2024; 4(4):283-292. https://doi.org/10.3390/aquacj4040021.
Understanding the transfer and persistence of antimicrobial resistance in aquaculture using a model teleost gut system - ()
Barcan, A.S., Humble, J., Kasaragod, S., Sajib, M., Barcan, R.A., Mcginnity, P., Welch, T.J., Robertson, B., Vamanu, E., Bacigalupo, A., Llewellyn, M.S., Pedrals, F.S. 2024. Understanding the transfer and persistence of antimicrobial resistance in aquaculture using a model teleost gut system. bioRxiv. 605792. https://doi.org/10.1101/2024.07.30.605792.
Seasonal mortality of Atlantic menhaden is associated with neurologic disease caused by a virulent clone of Vibrio anguillarum: Fish kills and implications for biosecurity - (Peer Reviewed Journal)
Lovy, J., Iwanowicz, L.R., Welch, T.J., Allam, B., Getchell, R., Geraci-Yee, S., Good, C., Snyder, J., Raines, C., Das, N. 2024. Seasonal mortality of Atlantic menhaden is associated with neurologic disease caused by a virulent clone of Vibrio anguillarum: Fish kills and implications for biosecurity. Transboundary and Emerging Diseases. 18:8816604. https://doi.org/10.1155/2024/8816604.
Detection Of Lactococcus spp. in environmental samples and wild fish from Four Lakes in Southern California - (Peer Reviewed Journal)
Abraham, T., Yazdi, Z., Littman, E., Shahin, K., Heckman, T.I., Quijano Cardé, E., Nguyen, D., Hua, R., Soto, E., Adkison, M., Veek, T., Mukkatira, K., Richey, C., Kwak, K., Mohammed, H., Ortega, C., Avendaño-Herrera, R., Hyatt, M.W., Keleher, W., Welch, T.J. 2023. Detection Of Lactococcus spp. in environmental samples and wild fish from Four Lakes in Southern California. Journal of Aquatic Animal Health. 35(3):129-198. https://doi.org/10.1002/aah.10188.
Pan-genome survey of the fish pathogen Yersinia ruckeri links accessory- and amplified genes to virulence - (Peer Reviewed Journal)
Riborg, A., Gulla, S., Colquhoun, D.J., Zeyl Fiskebeck, E., Ryder, D., Verner-Jeffreys, D., Welch, T.J. 2023. Pan-genome survey of the fish pathogen Yersinia ruckeri links accessory- and amplified genes to virulence. PLoS Pathogens. (18)5:e0285257. https://doi.org/10.1371/journal.pone.0285257.
Comparative evaluation of booster vaccine efficacy by intracoelomic injection and immersion with a whole-cell killed vaccine against Lactococcus petauri infection in rainbow trout (Oncorhynchus mykiss) - (Peer Reviewed Journal)
De Ruyter, T., Littman, E., Yazdi, Z., Adkison, M., Camus, A., Yun, S., Welch, T.J., Keleher, W.R., Soto, E. 2023. Comparative evaluation of booster vaccine efficacy by intracoelomic injection and immersion with a whole-cell killed vaccine against Lactococcus petauri infection in rainbow trout (Oncorhynchus mykiss). Pathogens. (12)5:632. https://doi.org/10.3390/pathogens12050632.
A large-scale, multi-year microbial community survey of a freshwater trout aquaculture facility - (Peer Reviewed Journal)
Graf, J., Testerman, T., Beka, L., Reichley, S.R., King, S., Welch, T.J., Wiens, G.D. 2022. A large-scale, multi-year microbial community survey of a freshwater trout aquaculture facility. FEMS Microbiology Ecology. 98:1-15. https://doi.org/10.1101/2022.05.03.490559.
Assessing bactericidal activity of peracetic acid to selected fish pathogens in RAS water - ()
Good, C., Redman, N., Murray, M., Straus, D.L., Welch, T.J. 2022. Assessing bactericidal activity of peracetic acid to selected fish pathogens in RAS water. Responsible Seafood Advocate. 343.
Bactericidal activity of peracetic acid to selected fish pathogens in recirculation aquaculture system water - (Peer Reviewed Journal)
Good, C., Redman, N., Murray, M., Straus, D.L., Welch, T.J. 2022. Bactericidal activity of peracetic acid to selected fish pathogens in recirculation aquaculture system water. Aquaculture Research. (53)16:5731-5736. https://doi.org/10.1111/are.16031.
qPCR screening for Yersinia ruckeri clonal complex 1 against a background of putatively avirulent strains in Norwegian aquaculture - (Peer Reviewed Journal)
Riborg, A., Gulla, S., Strand, D., Wiik-Nielsen, J., Ronneseth, A., Welch, T.J., Spilsberg, B., Colquhoun, D.J. 2022. qPCR screening for Yersinia ruckeri clonal complex 1 against a background of putatively avirulent strains in Norwegian aquaculture. Journal of Fish Diseases. https://doi.org/10.1111/jfd.13656.
Type IX secretion system effectors and virulence of the model Flavobacterium columnare strain MS-FC-4 - (Peer Reviewed Journal)
Thunes, N.C., Conrad, R.A., Mohammed, H.H., Zhu, Y., Barbier, P., Evenhuis, J., Perez-Pascual, D., Ghigo, J., Lipscomb, R.S., Schneider, J., Li, N., Erbes, D.H., Birkett, C.L., LaFrentz, B.R., Welch, T.J., McBride, M.J. 2021. Type IX secretion system effectors and virulence of the model Flavobacterium columnare strain MS-FC-4. Applied and Environmental Microbiology. 88(3). Article e01705-21. https://doi.org/10.1128/aem.01705-21.
Disruption of the Francisella noatunensis orientalis pdpA gene results in virulence attenuation and protection in zebrafish - (Peer Reviewed Journal)
Hansen, J.D., Ray, K., Chen, P., Yun, S., Elliott, D., Conway, C., Calcutt, M., Purcell, M., Welch, T.J., Soto, E. 2021. Disruption of the Francisella noatunensis orientalis pdpA gene results in virulence attenuation and protection in zebrafish. Infection and Immunity. 89(11):220-21. https://doi.org/10.1128/.
Genetic characterization of heterologous Edwardsiella piscicida isolates from diverse fish hosts and virulence assessment in a Chinook salmon Oncorhynchus tshawytscha model - (Peer Reviewed Journal)
Nguyen, D., López-Porras, A., Marancik, D., Hawkins, L., Welch, T.J., Petty, B., Ware, C., Griffin, M.J., Soto, E. 2021. Genetic characterization of heterologous Edwardsiella piscicida isolates from diverse fish hosts and virulence assessment in a Chinook salmon Oncorhynchus tshawytscha model. Journal of Fish Diseases. 44(12):1959-1970. https://doi.org/10.1111/jfd.13509.
Isolation and characterization of Lactococcus garvieae from rainbow trout, Onchorhyncus mykiss, from California, USA. - (Peer Reviewed Journal)
Shahin, K., Veek, T., Heckman, T.I., Littman, E., Mukkatira, K., Adkinson, M., Welch, T.J., Imai, D.M., Pastenkos, G., Camus, A., Soto, E. 2021. Isolation and characterization of Lactococcus garvieae from rainbow trout, Onchorhyncus mykiss, from California, USA. Transboundary and Emerging Diseases. https://doi.org/10.1111/tbed.14250.
Detecting Flavobacterial Fish Pathogens in the Environment Using High-Throughput 2 Community Analysis - (Peer Reviewed Journal)
Testerman, T., Beka, L., Mcclure, E.A., Reichley, S., King, S., Welch, T.J., Graf, J. 2021. Detecting flavobacterial fish pathogens in the environment using high-throughput 2 community analysis. Applied and Environmental Microbiology. 6(21):447745. https://doi.org/10.1101/2021.06.21.447745.
Assessing peracetic acid for controlling post-vaccination Saprolegnia spp.-associated mortality in juvenile Atlantic salmon Salmo salar in freshwater recirculation aquaculture systems - (Peer Reviewed Journal)
Good, C., Davidson, J., Straus, D.L., Harper, S.B., Marancik, D., Welch, T.J., Peterson, B.C., Pedersen, L., Lepine, C., Redman, N., Meinelt, T., Liu, D., Summerfelt, S. 2020. Assessing peracetic acid for controlling post-vaccination Saprolegnia spp.-associated mortality in juvenile Atlantic salmon Salmo salar in freshwater recirculation aquaculture systems. Aquaculture Research. 00:1-4. https://doi.org/10.1111/are.14567.
Characterization of a novel Yersinia ruckeri serotype O1-specific bacteriophage with virulence neutralizing activity - (Peer Reviewed Journal)
Welch, T.J. 2019. Characterization of a novel Yersinia ruckeri serotype O1-specific bacteriophage with virulence neutralizing activity. Journal of Fish Diseases. 43(2):285-293. https://doi.org/10.1111/jfd.13124.
Investigating the use of peracetic acid to reduce saprolegniasis in Atlantic salmon RAS culture - (Abstract Only)
Good, C., Davidson, J., May, T., Crouse, C., Lepine, C., Redman, N., Murray, M., Summerfelt, S., Straus, D.L., Harper, S.B., Marancik, D., Welch, T.J., Peterson, B.C., Pedersen, L., Phuntumart, V. 2019. Investigating the use of peracetic acid to reduce saprolegniasis in Atlantic salmon RAS culture [abstract]. 5th NordicRAS Workshop, Berlin, Germany, October 7 - 8, 2019. p. 41.
Flagellar regulation mediated by the Rcs pathway is required for virulence in the fish pathogen Yersinia ruckeri - (Peer Reviewed Journal)
Jozwick, A., La Patra, S., Graf, J., Welch, T.J. 2019. Flagellar regulation mediated by the Rcs pathway is required for virulence in the fish pathogen Yersinia ruckeri. Fish and Shellfish Immunology. 91:306.314. https://doi.org/10.1016/j.fsi.2019.05.036.
Biogeography of the fish pathogen Aeromonas salmonicida inferred by vapA genotyping - (Peer Reviewed Journal)
Gulla, S., Bayliss, S., Björnsdóttir, B., Dalsgaard, I., Haenen, O., Jansson, E., Mccarthy, U., Scholz, F., Vercauteren, M., Verner-Jeffreys, D., Welch, T.J., Wiklund, T., Colquhoun, D.J. 2019. Biogeography of the fish pathogen Aeromonas salmonicida inferred by vapA genotyping. FEMS Microbiology Letters. 366(7). https://doi.org/10.1093/femsle/fnz074.
Studies to prevent saprolegniasis in Atlantic salmon RAS - (Abstract Only)
Good, C., Davidson, J., May, T., Crouse, C., Lepine, C., Redman, N., Murry, M., Summerfelt, S., Straus, D.L., Harper, S.B., Marancik, D., Welch, T.J., Peterson, B.C., Pedersen, L., Phuntumart, V. 2019. Studies to prevent saprolegniasis in Atlantic salmon RAS [abstract]. RAStech 2019, May 13 - 14, 2019, Washington, DC. p. 1.
Proteome analysis reveals a role of rainbow trout lymphoid organs during the Yersinia ruckeri infection process - (Peer Reviewed Journal)
Kumar, G., Hummel, K., Noebauer, K., Welch, T.J., Razzazi-Fazeli, E., El-Matboul, M. 2019. Proteome analysis reveals a role of rainbow trout lymphoid organs during the Yersinia ruckeri infection process. Scientific Reports. 8:13998. https://doi.org/10.1038/s41598-018-31982-6.
Flagellar regulation is required for virulence in Yersinia ruckeri - (Abstract Only)
Welch, T.J., Jozwick, A. 2018. Flagellar regulation is required for virulence in Yersinia ruckeri [abstract]. International Symposium on Aquatic Animal Health. P156.
Multi-Locus Variable number of tandem repeat Analysis (MLVA) of Yersinia ruckeri 2 confirms the existence of host-specificity, geographic endemism and anthropogenic 3 dissemination of virulent clones - (Peer Reviewed Journal)
Gulla, S., Barnes, A.C., Welch, T.J., Romalde, J.L., Rydere, D., Ormsby, M.J., Carson, J., Lagesen, K., Verner-Jeffreys, D.W., Davies, R.L., Colquhoun, D.J. 2018. Multi-Locus Variable number of tandem repeat Analysis (MLVA) of Yersinia ruckeri 2 confirms the existence of host-specificity, geographic endemism and anthropogenic 3 dissemination of virulent clones. Applied and Environmental Microbiology. doi:10.1128/AEM.00730-18.
Similar genetic architecture with shared and unique quantitative trait loci for bacterial cold water disease resistance in two rainbow trout breeding populations Reprint Icon - (Peer Reviewed Journal)
Vallejo, R.L., Liu, S., Gao, G., Fragomeni, B.O., Hernandez, A.G., Leeds, T.D., Parsons, J.E., Martin, K.E., Evenhuis, J., Welch, T.J., Wiens, G.D., Palti, Y. 2017. Similar genetic architecture with shared and unique quantitative trait loci for bacterial cold water disease resistance in two rainbow trout breeding populations. Frontiers in Genetics. 8:156. https://doi.org/10.3389/fgene.2017.00156.
Comparative phenotypic and genotypic analysis of Edwardsiella spp. isolates from different hosts and geographic origins, with an emphasis on isolates formerly classified as E. tarda and an evaluation of diagnostic methods - (Peer Reviewed Journal)
Reichley, S.R., Ware, C., Steadman, J., Gaunt, P.S., Garcia, J.C., LaFrentz, B.R., Thachil, A., Stine, C.B., Waldbieser, G.C., Arias, C.R., Lock, T., Welch, T.J., Cipriano, R.C., Greenway, T.E., Khoo, L.H., Wise, D.J., Lawrence, M.L., Griffin, M.J. 2017. Comparative phenotypic and genotypic analysis of Edwardsiella spp. isolates from different hosts and geographic origins, with an emphasis on isolates formerly classified as E. tarda and an evaluation of diagnostic methods. Journal of Clinical Microbiology. 55:3466-3491.
Comparative phenotypic and genotypic analysis of Edwardsiella spp. isolates from different hosts and geographic origins with an emphasis on isolates formerly clasified as E. tarda and an evaluation of diagnostic methods - (Peer Reviewed Journal)
Reichley, S.R., Ware, C., Steadman, J., Gaunt, P.S., Garcia, J.C., LaFrentz, B.R., Thachil, A., Stine, C., Waldbieser, G.C., Arias, C.R., Lock, T., Welch, T.J., Cipriano, R.C., Greenway, T.E., Khoo, L.H., Wise, D.J., Lawrence, M.L., Griffin, M.J. 2017. Comparative phenotypic and genotypic analysis of Edwardsiella spp. isolates from different hosts and geographic origins with an emphasis on isolates formerly clasified as E. tarda and an evaluation of diagnostic methods. Journal of Clinical Microbiology. 55:3466-3491.
Global proteomic profiling of Yersinia ruckeri strains - (Peer Reviewed Journal)
Kumar, G., Hummel, K., Welch, T.J., Razzazi-Fazeli, E., El-Matbouli, M. 2017. Global proteomic profiling of Yersinia ruckeri strains [online serial]. Veterinary Research. 48:55. https://doi.org/10.1186/s13567-017-0460-3.
Genome-wide association studies reveal similar genetic architecture with shared and unique QTL for Bacterial Cold Water Disease resistance in two rainbow trout (Oncorhynchus mykiss) breeding populations - ()
Vallejo, R.L., Liu, S., Gao, G., Fragomeni, B.O., Hernandez, A.G., Leeds, T.D., Parsons, J.E., Martin, K.E., Evenhuis, J., Welch, T.J., Wiens, G.D., Palti, Y. 2017. Genome-wide association studies reveal similar genetic architecture with shared and unique QTL for Bacterial Cold Water Disease resistance in two rainbow trout (Oncorhynchus mykiss) breeding populations. bioRxiv. doi: 10.1101/163964.
Efficacy testing of 35-year-old commercially-produced ERM bacterin reveals the remarkable stability of this product - (Peer Reviewed Journal)
Welch, T.J., Goodrich, T.D., La Patra, S.E. 2017. Efficacy testing of 35-year-old commercially-produced ERM bacterin reveals the remarkable stability of this product. Journal of Fish Diseases. 00:1–4. doi:10.1111/jfd.12646.
Genome-wide association studies identify 25 genetic loci associated with resistance to Bacterial Cold Water Disease in rainbow trout - (Abstract Only)
Vallejo, R.L., Liu, S., Gao, G., Fragomeni, B.O., Hernandez, A.G., Leeds, T.D., Parsons, J., Martin, K., Evenhuis, J., Welch, T.J., Wiens, G.D., Palti, Y. 2017. Genome-wide association studies identify 25 genetic loci associated with resistance to Bacterial Cold Water Disease in rainbow trout [abstract]. Gordon Research Conferences. P245.
Detection of the florfenicol resistance gene floR in Chryseobacterium isolates from rainbow trout. Exception to the general rule? - (Peer Reviewed Journal)
Verner-Jeffreys, D., Brazier, T., Perez, R.Y., Ryder, D., Hoare, R., Welch, T.J., Ngao, T., Card, R., Mclaren, N., Ellis, R., Rowe, W., Bartle, K. 2017. Detection of the florfenicol resistance gene floR in Chryseobacterium isolates from rainbow trout. Exception to the general rule? FEMS Microbiology Ecology. 93(4):fix015. doi:10.1093/femsec/fix015.
The flagellar master operon flhDC is a pleiotropic regulator involved in motility and virulence of the fish pathogen Yersinia ruckeri - (Peer Reviewed Journal)
Snyder, A.K., Graf, J., Welch, T.J. 2016. The flagellar master operon flhDC is a pleiotropic regulator involved in motility and virulence of the fish pathogen Yersinia ruckeri. Journal of Applied Microbiology. 122(3):578-588. doi: 10.1111/jam.13374.
Assessing peracetic acid as a means to control post-vaccination Saprolegniasis in Atlantic salmon Salmo salar parr in recirculation aquaculture systems - (Abstract Only)
Good, C., Davidson, J., Straus, D.L., Harper, S.B., Marancik, D.P., Welch, T.J., Lepine, C., Wolters, W.R., Peterson, B.C., Pedersen, L., Phuntamart, V., Summerfelt, S. 2017. Assessing peracetic acid as a means to control post-vaccination Saprolegniasis in Atlantic salmon Salmo salar parr in recirculation aquaculture systems [abstract]. Aquaculture America Conference 2017, Feb 19-22, 2017, San Antonio, TX. p. 153.
Shotgun proteomic analysis of Yersinia ruckeri isolates under normal and iron-limited conditions - (Peer Reviewed Journal)
Kumar, G., Hummel, K., Ahrens, M., Menanteau-Ledouble, S., Razzazi-Fazeli, E., Welch, T.J., El-Matbouli, M. 2016. Shotgun proteomic analysis of Yersinia ruckeri isolates under normal and iron-limited conditions. Veterinary Research. 47:100. doi:10.1186/s13567-016-0384-3.
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 Only)
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 - (Peer Reviewed Journal)
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 Reprint Icon - (Peer Reviewed Journal)
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. https://doi.org/10.1128/genomeA.00781-16.
Fish Viruses and Bacteria: Pathobiology and Protection - ()
Welch, T.J., Marancik, D., Good, C. 2017. Weissella ceti. In: Woo, P. T. K., Cipriano, R. C. Fish Viruses and Bacteria: Pathobiology and Protection. Wallingford, Oxfordshire, UK: CABI Publishing. Chapter 24 p.334.
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 - (Peer Reviewed Journal)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Peer Reviewed Journal)
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) - (Peer Reviewed Journal)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Abstract Only)
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.
Genomic selection for BCWD resistance in Rainbow trout using RADSNP and SNP genotyping platforms, single-step GBLUP and Bayesian variable selection models - (Abstract Only)
Vallejo, R.L., Leeds, T.D., Liu, S., Gao, G., Welch, T.J., Wiens, G.D., Palti, Y. 2015. Genomic selection for BCWD resistance in Rainbow trout using RADSNP and SNP genotyping platforms, single-step GBLUP and Bayesian variable selection models [abstract]. International Symposium on Genetics in Aquaculture. P05796.
Systemic granuloma observed in Atlantic salmon Salmo salar raised to market size in a freshwater recirculation aquaculture system Reprint Icon - (Peer Reviewed Journal)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Peer Reviewed Journal)
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 - (Abstract Only)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Abstract Only)
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 - (Peer Reviewed Journal)
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 - (Abstract Only)
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.
Weissellosis – An important emerging disease in farmed rainbow trout - (Abstract Only)
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.
Identification Of O-antigen biosynthetic genes specific to Serovar 01 Yersinia Ruckeri: Role in virulence and protective immunity - (Abstract Only)
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 in trout aquaculture in North America: an aggressive vaccination campaign against an emerging pathogen - (Abstract Only)
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 - (Proceedings)
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 - (Abstract Only)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Abstract Only)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Abstract Only)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Abstract Only)
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 - (Peer Reviewed Journal)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Peer Reviewed Journal)
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 - (Proceedings)
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 - (Peer Reviewed Journal)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Peer Reviewed Journal)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Peer Reviewed Journal)
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 - (Abstract Only)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Abstract Only)
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) - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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.
Rainbow Trout Innate Immunity against Flavobacterium psychrophilum - (Abstract Only)
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.
Genome Sequence of Flavobacterium psychrophilum Strain CSF 259-93 and Characterization of a Large Cluster of Genes Containing Short Repeats - (Abstract Only)
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.
Associations of Markers Linked to Major Histocompatibility (MH) Regions With Disease Resistance in Rainbow Trout - (Abstract Only)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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.
Spleen Size Predicts Innate Resistance of Rainbow Trout to Flavobacterium psychrophilum Challenge - (Abstract Only)
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.
Distribution of Yersinia pestis pIP1202-like Multidrug Resistance Plasmids Among Foodborne Pathogens - (Abstract Only)
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.
Associations of Markers Linked to Major Histocompatibility (MH) Regions and to Other Immune Response Genes with Disease Resistance in Rainbow Trout - (Abstract Only)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Peer Reviewed Journal)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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) - (Abstract Only)
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 - (Abstract Only)
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) - (Abstract Only)
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) - (Abstract Only)
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 - (Abstract Only)
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 - (Peer Reviewed Journal)
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.