Eric Leis

Peer Reviewed Publications

    Cone, David K, Appy, Ralph G., and Leis, Eric M. 2023. Gyrodactylus, Fundulotrema, and Salsuginus Species (Monogenea) Infecting Fundulus parvipinnis parvipinnis (Osteichthyes: Fundulidae) in Central and Southern California Estuaries and Bays. Bulletin, Southern California Academy of Sciences, 122(2):62-79

    Leis, E.; Bailey, J.; Katona, R.; Standish, I.; Dziki, S.; McCann, R.; Perkins, J.; Eckert, N.; Baumgartner, W. A Mortality Event Involving Endangered Pallid Sturgeon (Scaphirhynchus albus) Associated with Gyrodactylus conei n. sp. (Monogenea: Gyrodactylidae) Effectively Treated with Parasite-S (Formalin). Parasitologia 2023, 3, 205–214. https://doi.org/10.3390/parasitologia3020021

     Knowles S, Dennis M, McElwain A, Leis E, Richard J. Pathology and infectious agents of unionid mussels: A primer for pathologists in disease surveillance and investigation of mortality events. Veterinary Pathology. 2023;0(0). doi:10.1177/03009858231171666

     Tony L. Goldberg, Emilie Blevins, Eric M. Leis, Isaac F. Standish, Jordan C. Richard, Matthew R. Lueder, Regina Z. Cer, and Kimberly A. Bishop-Lilly. 2023. Plasticity, Paralogy, and Pseudogenization: Rhabdoviruses of Freshwater Mussels Elucidate Mechanisms of Viral Genome Diversification and the Evolution of the Finfish-Infecting Rhabdoviral Genera. Journal of Virology - online early

    Eric M. Leis, Sara Dziki, Jordan Richard, Rose Agbalog, Diane Waller, Joel Putnam, Susan Knowles, Tony Goldberg. 2023. Further Bacteriological Analysis of Annual Pheasantshell (Actinonaias Pectorosa) Mussel Mortality Events in the Clinch River (Virginia/Tennessee), USA, Reveals a Consistent Association with Yokenella regensburgei. Freshwater Mollusk Biology and Conservation, 26(1), 1-10,

    Cupp, A.R., Tuttle-Lau, M.T., Leis, E., Wolfe, S.L., Smerud, J.R., Oliver, J.W., Erickson, R.A., Hannah, A.P., Johnson, A.E., Nelson, R.G., Standish, I., Wils, J.M. and Gaikowski, M.P. (2023). Efficacy of Florfenicol and Oxytetracycline Administered in Feed to Control Cisco Mortality Associated with Aeromonas salmonicida Infections. North American Journal of Aquaculture. https://doi.org/10.1002/naaq.10283

    Tuttle-Lau, M. T., Leis, E. M., Cupp, A. R., Peterman, L. L., Hebert, J. L., Erickson, R. A., Schleis, S. M., & Gaikowski, M. P. (2023). Efficacy of hydrogen peroxide to reduce Gyrodactylus species infestation density on four fish species. Journal of Aquatic Animal Health. https://doi.org/10.1002/aah.10179    

    Richard, J.C.; Leis, E.M.; Dunn, C.D.; Harris, C.; Agbalog, R.E.; Campbell, L.J.; Knowles, S.;Waller, D.L.; Putnam, J.G.; Goldberg, T.L. Freshwater Mussels Show Elevated Viral Richness and Intensity during a Mortality Event. Viruses 2022, 14, 2603. https://doi.org/10.3390/v14122603

    Leis, E.M.; Dziki, S.; Standish, I.; Waller, D.; Richard, J.; Weinzinger, J.; Harris, C.; Knowles, S.; Goldberg, T. A Bacteriological Comparison of the Hemolymph from Healthy and Moribund Unionid Mussel Populations in the Upper Midwestern U.S.A. Prompts the Development of Diagnostic Assays to Detect Yokenella regensburgei. Microorganisms 2023, 11, 1068.

    McAllister, C.T., Cloutman, D.G., Leis, E.M. et al. A new Myxobolus (Cnidaria: Myxosporea: Myxobolidae) from the gills of the southern striped shiner, Luxilus chrysocephalus isolepis (Cypriniformes: Leuciscidae), from southwestern Arkansas, USA. Systematic Parasitology (2023). https://doi.org/10.1007/s11230-023-10082-8

    Katona, R., Standish, I., McCann, R., Dziki, S., Bailey, J., Puzach, C., Warg, J., Leis, E. and Phillips, K. (2022), Isolations of the Spring Viremia of Carp Virus in the Upper Mississippi River (USA), Including a New Host, the Quillback. Journal of Aquatic Animal Health, 34: 92-97. https://doi.org/10.1002/aah.10153

    Chris T. McAllister, Donald G. Cloutman, Eric M. Leis, Alvin C. Camus, Stanley E. Trauth, Ethan T. Woodyard, Henry W. Robison "A New Species of Myxobolus (Cnidaria: Myxosporea: Myxobolidae) from the Gills of Creek Chub, Semotilus atromaculatus (Cypriniformes: Leuciscidae: Plagiopterinae), from the Ouachita Drainage of Arkansas," Journal of Parasitology, 108(5), 476-486,

   McAllister, C.T., Cloutman, D.G., Leis, E.M. et al. A new species of Myxidium (Cnidaria: Myxosporea: Myxidiidae) from the gallbladder of pickerels, Esox spp. (Esociformes: Esocidae), from southwestern Arkansas, USA. Systematic Parasitology 99, 611–620 (2022).

    McAllister, C.T., Leis, E.M., Cloutman, D.G. et al. Pseudomurraytrema fergusoni n. sp. (Monogenea: Dactylogyridae) from gills of Pealip Redhorse, Moxostoma pisolabrum (Catostomidae) from Arkansas, USA, with a description of gill pathology. Syst Parasitol 100, 159–170 (2023).

    Standish, I., McCann, R., Puzach, C., Leis, E., Bailey, J., Dziki, S., Katona, R., Lark, E., Edwards, C., Keesler, B., Reichley, S., King, S., Knupp, C., Harrison, C., Loch, T., & Phillips, K. (2022). Development of duplex qPCR targeting Carnobacterium maltaromaticum and Vagococcus salmoninarum. Journal of Fish Diseases, 45, 667– 677. https://doi.org/10.1111/jfd.13592

    Knowles, S., Leis, E.M., Richard, J.C., Cole, R., Agbalog, R.E., Putnam, J.G., Goldberg, T.L. and Waller, D.L. 2022. A Novel Gonadotropic Microsporidian Parasite (Microsporidium clinchi n. sp.) Infecting a Declining Population of Pheasantshell Mussels (Actinonaias pectorosa) (Unioinidae) from the Clinch River, USA. Parasitologia 2: 1–12. https://doi.org/1P0.3390/parasitologia2010001

    Richard, Jordan C., Lewis J. Campbell, Eric M. Leis, Rose E. Agbalog, Chris D. Dunn, Diane L. Waller, Susan Knowles, Joel G. Putnam, and Tony L. Goldberg 2021. "Mussel Mass Mortality and the Microbiome: Evidence for Shifts in the Bacterial Microbiome of a Declining Freshwater Bivalve" Microorganisms 9, no. 9: 1976.

   Eric Leis, Tran Kim Chi, and Jaakko Lumme. 2021. Global phylogeography of salmonid ectoparasites of the genus Gyrodactylus, with a special emphasis on the origin of the circumpolar Gyrodactylus salmonis (Platyhelminthes; Monogenea). Comparative Parasitology 88: 130-143

    Eric M. Leis, Russell H. Easy, Allie Scovil, David K. Cone, Donald G. Cloutman, Chris T. McAllister, and Henry W. Robison. 2021. Urocleidus sayani n. sp. (Monogenea: Dactylogyridae) from the gills of pirate perch (Aphredoderus sayanus), U.S.A. Journal of Parasitology 107(2) 214–221

   Isaac Standish, Eric Leis, Sara Erickson, Ryan Katona, Wes Baumgartner, Iman Ibrahim, Kevin Hanson, Tony Goldberg. 2021. Nephroblastoma in a common mudpuppy Necturus maculosus simultaneously present with a mollicute bacterium of the genus Acholeplasma. Journal of Aquatic Animal Health 33:44–52

    Eric Leis, Russell Easy and David Cone. 2021. New host and geographical records of Gyrodactylus mediotorus (Monogenea) from Notropis texanus in Wisconsin. Systematic Parasitology 98:247–253 

    Jordan Richard, Eric Leis, Christopher D. Dunn, Rose Agbalog, Diane Waller, Susan Knowles, Joel Putnam, and Tony L. Goldberg. 2020. Mass morality in at-risk pheasantshell mussels (Actinonaias pectorosa) in the Clinch River, USA, linked to a novel densovirus. Scientific Reports 10:14498

   Markéta Ondračková, Mária Seifertová, Anna Bryjová, Eric Leis, Pavel Jurajda. 2020. Morphometric and genetic based evidence for incipient speciation of Gyrodactylus nebulosus (Monogenea) in non-native European populations of Ameiurus nebulosus and A. melas. Parasitology 147(14):1700-1711       

    Standish, I., Leis, E., Erickson, S., McCann, R., Puzach, C., Katona, R., Lark, E., Bailey, J., Kleman, E., Buening, J., Edwards, C., Loch, T., & K. Phillips. 2020. Vagococcus salmoninarum II - qPCR, tropism and egg-associated transmission. Journal of Fish Diseases 43(3):317-325.  

    Standish, I., Erickson, S., Leis, E., Baumgartner, W., Loch, T., Knupp, C., McCann, R., Puzach, C., Katona, R., Lark, E., Bailey, J., Buening, J., Edwards, C., & K. Phillips.2020. Vagococcus salmoninarum I - a chronic coldwater streptococcosis in  broodstock broodstock
The reproductively mature adults in a population that breed (or spawn) and produce more individuals (offspring or progeny).

Learn more about broodstock  brook trout (Salvelinus fontinalis) in Wisconsin, USA. Journal of Fish Diseases 43(3):305-316.  

    Eric Leis, Roland Leblanc, Russell Easy, Hillary Dort, and David Cone. 2020. Supplemental diagnosis of Gyrodactylus nebulosus Kritsky and Mizelle, 1968 (Monogenea) on 0+ age Ameiurus nebulosus (Siluriformes) considered for commercial grow-out in Southwestern Nova Scotia, Canada. Parasitology Research 119, 1149–1153.

    Thomas B. Waltzek, Kuttichantran Subramaniam, Eric Leis, Ryan Katona, Marisa Barbknecht, Kelly Rock, Michael A. Hoffman. 2019. Genomic and Ultrastructural Characterization of a Bunyavirus isolated from Largemouth Bass (Micropterus salmoides). Virus Research 273:197761.

    Eric M. Leis, Thomas G. Rosser, Wes A. Baumgartner, Matt J. Griffin. 2019. Two novel myxozoans from Pirate Perch Aphredoderus sayanus (Gilliams, 1824) in the upper Mississippi River, including the first North American species of Hennegoides Lom, Tonguthai, & Dyková, 1991.  Journal of Parasitology 105(6) : 918-927

   Eric Leis, Sara Erickson, Diane Waller, Jordan Richards and Tony Goldberg. 2019. Culturable bacteria identified from the hemolymph of unionid mussels from the upper Mississippi River basin compared to Clinch River. Freshwater Mollusk Conservation and Biology 22:70-80

    Tony Golberg, Christopher Dunn, Eric Leis and Diane Waller. 2019. A Novel Picorna-Like Virus in a Wabash Pigtoe(Fusconaia flava) from the upper Mississippi River, USA. Freshwater Mollusk Conservation and Biology 22:81-84

     Eric Leis, Sara Erickson, Rebekah McCann, Isaac Standish, Ryan Katona, Brian Brecka, Wes Baumgartner. 2019. Bluegill Picornavirus isolated from a mortality event involving Bluegill (Lepomis macrochirus) in the upper Mississippi River. Journal of Fish Diseases 42(9):1233-1240.

     Sara Erickson, Eric Leis and Steven Simpson. 2019. Spending characteristics of bass, salmon, and walleye fishing tournament anglers in Wisconsin. Journal of Recreation, Parks, and Tourism in Public Health 3:155-174

     Sarah J Poynter, Eric Leis, Stephanie J DeWitte-Orr. 2019. In vitro transcribed dsRNA limits Viral Hemorrhagic Septicemia virus (VHSV)-IVb infection in a novel fathead minnow (Pimephales promelas) skin cell line. Fish and Shellfish Immunology 86:403-40

    Nguyen T. K. Vo, Levi C. Moore, Eric M Leis, Stephanie J. DeWitte-Orr. 2019. Class A scavenger receptors mediate extracellular dsRNA sensing, leading to downstream antiviral gene expression in a novel American toad cell line, BufoTad. Developmental and Comparative Immunology 92:140-149

     Isaac Standish, Sara Erickson, Eric Kleman, Rebekah McCann, Ryan Katona, and      Eric Leis. 2019. Yersinia ruckeri isolated from Common Mudpuppy Necturus             maculosus. Journal of Aquatic Animal Health 31:71-74

     Isaac Standish, Eric Leis, Laura Zinnel, Jeena Credico, Noel Schmitz. 2018. A survey of Wisconsin Amphibians for the detection of the symbiotic Janthinobacterium lividium. Herpetological Review 49(3): 473-479

      Isaac Standish, Eric Leis, Noel Schmitz, Jenna Credico, Jennifer Bailey, Ken Phillips, Teresa Lewis. 2018. Optimizing, Validating, and Field Testing a Multiplex Quantitative Polymerase Chain Reaction for the Detection of Amphibian Pathogens. Diseases of Aquatic Organisms 129: 1–13 doi: 10.3354/dao03230

      Eric M. Leis, Rebekah McCann, Isaac Standish, Barb Benney, and Casey Finnerty. 2018. Comparison of lethal and nonlethal sampling methods for the detection of Largemouth Bass Virus from the upper Mississippi River. Journal of Aquatic Animal Health 30:217–225

      Eric M. Leis, Russell Easy and David Cone. 2018. Supplemental description of     Gyrodactylus fairporti VanCleave, 1921 (Monogenea) from 1 month old black          bullhead (Ictalurus melas) in riverside pools in Wisconsin. Parasitology Research      117:1265–1269         

      Eric M. Leis, Russell Easy, Leah Maclean and David Cone. 2018. Ligictaluridus michaelalicea n. sp. (Monogenea: Ancyrocephalidae) from flathead catfish (Pylodictis olivaris) in the upper Mississippi River, including remarks on taxonomy influencing monogenean treatment regulation in the United States.  Parasitology Research 117(3): 825–830

      Thurner K, Goforth RR, Chen S, Amberg J, Leis E, Kinsella JM, Mahapatra C, Sepúlveda MS. 2017. Viruses, bacteria and helminths of invasive carp: Insights from an in vitro assay and a survey with native fishes in a large Midwestern River. Journal of Fish Pathology 30: 135-148

      William N. Batts, Scott E. LaPatra, Ryan Katona, Eric Leis, Terry Fei Fan Ng, Marine O. Brieuc, Rachel B. Breyta, Maureen K. Purcell, Carla M. Conway, Thomas B. Waltzek, Eric Delwart, James R. Winton.  2017. Molecular             characterization of a novel orthomyxovirus from rainbow and steelhead trout             (Oncorhynchus mykiss).  Virus Research 230: 38–49

      Joel G. Putnam, Justine G. Nelson, Eric M. Leis, Richard A. Erickson, Terrence D.  Hubert and John J Amberg. 2017. Using silver and bighead carp cell lines for the identification of a unique metabolite fingerprint from thiram-specific chemical exposure. Chemosphere 168:1477-1485.

      Eric M. Leis, Thomas G. Rosser, Wes A. Baumgartner and Matt J. Griffin. 2017.      Henneguya laseeae n. sp. from flathead catfish (Pylodictis olivaris) in the upper            Mississippi River.  Parasitology Research 116: 81–89.

      Eric Leis, Stanley King, Sarah Leis and David Cone. 2016.  Infections of    Gyrodactylus crysoleucas and Gyrodactylus sp. (Monogenea) at a Golden Shiner    (Notemigonus crysoleucas) Farm in Minnesota.  Comparative Parasitology:     83(1): 105-110

       Eric Leis, Russell Easy and David Cone. 2016. A report of the potential pathogen Pseudocapillaria (Pseudocapillaria) tomentosa  (Dujardin, 1843) (Nematoda) from red shiner (Cyprinella lutrensis) shipped from Missouri to Wisconsin.  Comparative Parasitology 83(2):275-278              

       Mark Gaikowski, Sue Schleis, Eric Leis, Becky Lasee, and Richard Endris.  2014. Effectiveness of Aquaflor (50% florfenicol) administered in feed to control mortality associated with Streptococcus iniae in tilapia at a commercial tilapia production facility.  North American Journal of Aquaculture 76 (4): 375-382

       Marisa Barbknecht, Sol Sepsenwol, Eric Leis, Maren Tuttle-Lau, Mark Gaikowski, Nick Knowles, Becky Lasee and Michael Hoffman.  2014. Characterization of a new picornavirus isolated from the freshwater fish Lepomis macrochirus. General Journal of Virology 95: 601-613

Other Publications

Eric Leis, Diane Waller, Susan Knowles, Tony Goldberg, Joel Putnam, Jordan Richard, Sara Erickson, Emilie Blevins and Jesse Weinzinger. 2018. Building a response network to investigate potential pathogens associated with Unionid mortality events. Ellipsaria 20(4): 44-45