David Ley

Perez, K., Mullen, N., Canter, J. A., Ley, D. H., & May, M. (2020). Phenotypic diversity in an emerging mycoplasmal disease. MICROBIAL PATHOGENESIS, 138. https://doi.org/10.1016/j.micpath.2019.103798

Rogers, K. H., Ley, D. H., & Woods, L. W. (2019). Mycoplasmosis of House Finches (Haemorhous mexicanus) and California Scrub-Jays (Aphelocoma californica) in a Wildlife Rehabilitation Facility with Probable Nosocomial Transmission. JOURNAL OF WILDLIFE DISEASES, 55(2), 494–498. https://doi.org/10.7589/2018-06-162

Ghanem, M., Wang, L. Y., Zhang, Y., Edwards, S., Lu, A., Ley, D., & El-Gazzar, M. (2018). Core genome multilocus sequence typing: a standardized approach for molecular typing of Mycoplasma gallisepticum. Journal of Clinical Microbiology, 56(1). https://doi.org/10.1128/jcm.01145-17

Allen, C. R., Mara, A., Tulman, E. R., Ley, D. H., & Geary, S. J. (2018). House finch (Haemorhous mexicanus)-associated Mycoplasma gallisepticum Identified in Lesser Goldfinch (Spinus psaltria) and Western Scrub Jay (Aphelocoma californica) using Strain-Specific Quantitative PCR. Journal of Wildlife Diseases, 54(1), 180–185. https://doi.org/10.7589/2017-04-079

Fleming-Davies, A. E., Williams, P. D., Dhondt, A. A., Dobson, A. P., Hochachka, W. M., Leon, A. E., … Hawley, D. M. (2018). Incomplete host immunity favors the evolution of virulence in an emergent pathogen. Science, 359(6379), 1030-. https://doi.org/10.1126/science.aao2140

Pflaum, K., Tulman, E. R., Beaudet, J., Liao, X., Dhondt, K. V., Dhondt, A. A., … Gearya, S. J. (2017). Attenuated phenotype of a recent house finch-associated Mycoplasma gallisepticum isolate in domestic poultry. Infection and Immunity, 85(6). https://doi.org/10.1128/iai.00185-17

Dhondt, A. A., Dhondt, K. V., Hochachka, W. M., Ley, D. H., & Hawley, D. M. (2017). Response of house finches recovered from Mycoplasma gallisepticum to reinfection with a heterologous strain. Avian Diseases, 61(4), 437–441. https://doi.org/10.1637/11571-122016-reg.1

Ley, D. H., Hawley, D. M., Geary, S. J., & Dhondt, A. A. (2016). House finch (Haemorhous mexicanus) conjunctivitis, and mycoplasma spp. isolated from North American wild birds, 1994-2015. Journal of Wildlife Diseases, 52(3), 669–673. https://doi.org/10.7589/2015-09-244

Dhondt, A. A., DeCoste, J. C., Ley, D. H., & Hochachka, W. M. (2014). Diverse wild bird host range of Mycoplasma gallisepticum in Eastern North America. PLoS One, 9(7). https://doi.org/10.1371/journal.pone.0103553

Grodio, J. L., Ley, D. H., Schat, K. A., & Hawley, D. M. (2013). Chronic Mycoplasma conjunctivitis in house finches: Host antibody response and M. gallisepticum VlhA expression. Veterinary Immunology and Immunopathology, 154(3-4), 129–137. https://doi.org/10.1016/j.vetimm.2013.05.010

Hochachka, W. M., Dhondt, A. A., Dobson, A., Hawley, D. M., Ley, D. H., & Lovette, I. J. (2013). Multiple host transfers, but only one successful lineage in a continent-spanning emergent pathogen. Proceedings of the Royal Society of London. Series B, 280(1766). https://doi.org/10.1098/rspb.2013.1068

Van Wettere, A. J., Ley, D. H., Scott, D. E., Buckanoff, H. D., & Degernes, L. A. (2013). Mycoplasma corogypsi-associated polyarthritis and tenosynovitis in black vultures (Coragyps atratus). Veterinary Pathology, 50(2), 291–298. https://doi.org/10.1177/0300985812457791

Hawley, D. M., Osnas, E. E., Dobson, A. P., Hochachka, W. M., Ley, D. H., & Dhondt, A. A. (2013). Parallel patterns of increased virulence in a recently emerged wildlife pathogen. PLoS Biology, 11(5). https://doi.org/10.1371/journal.pbio.1001570

Ley, D. H., Moresco, A., & Frasca, S. (2012). Conjunctivitis, rhinitis, and sinusitis in cliff swallows (Petrochelidon pyrrhonota) found in association with Mycoplasma sturni infection and cryptosporidiosis. Avian Pathology, 41(4), 395–401. https://doi.org/10.1080/03079457.2012.697624

Tulman, E. R., Liao, X., Szczepanek, S. M., Ley, D. H., Kutish, G. F., & Geary, S. J. (2012). Extensive variation in surface lipoprotein gene content and genomic changes associated with virulence during evolution of a novel North American house finch epizootic strain of Mycoplasma gallisepticum. Microbiology (Reading, England), 158, 2073–2088. https://doi.org/10.1099/mic.0.058560-0

Grodio, J. L., Hawley, D. M., Osnas, E. E., Ley, D. H., Dhondt, K. V., Dhondt, A. A., & Schat, K. A. (2012). Pathogenicity and immunogenicity of three Mycoplasma gallisepticum isolates in house finches (Carpodacus mexicanus). Veterinary Microbiology, 155(1), 53–61. https://doi.org/10.1016/j.vetmic.2011.08.003

Hawley, D. M., Grodio, J., Frasca, S., Kirkpatrick, L., & Ley, D. H. (2011). Experimental infection of domestic canaries (Serinus canaria domestica) with Mycoplasma gallisepticum: A new model system for a wildlife disease. Avian Pathology, 40(3), 321–327. https://doi.org/10.1080/03079457.2011.571660

Hawley, D. M., Dhondt, K. V., Dobson, A. P., Grodio, J. L., Hochachka, W. M., Ley, D. H., … Dhondt, A. A. (2010). Common garden experiment reveals pathogen isolate but no host genetic diversity effect on the dynamics of an emerging wildlife disease. Journal of Evolutionary Biology, 23(8), 1680–1688. https://doi.org/10.1111/j.1420-9101.2010.02035.x

Ley, D. H., Marusak, R. A., Vivas, E. J., Barnes, H. J., & Fletcher, O. J. (2010). Mycoplasma iowae associated with chondrodystrophy in commercial turkeys. Avian Pathology, 39(2), 87–93. https://doi.org/10.1080/03079451003599276

Ley, D. H., Anderson, N., Dhondt, K. V., & Dhondt, A. A. (2010). Mycoplasma sturni from a California house finch with conjunctivitis did not cause disease in experimentally infected house finches. Journal of Wildlife Diseases, 46(3), 994–999. https://doi.org/10.7589/0090-3558-46.3.994

Dhondt, K. V., Dhondt, A. A., & Ley, D. H. (2007). Effects of route of inoculation on Mycoplasma gallisepticum infection in captive house finches. Avian Pathology, 36(6), 475–479. https://doi.org/10.1080/03079450701642016

Sanei, B., Barnes, H. J., Vaillancourt, J. P., & Ley, D. H. (2007). Experimental infection of chickens and turkeys with Mycoplasma gallisepticum reference strain S6 and North Carolina field isolate RAPD type B. Avian Diseases, 51(1), 106–111. https://doi.org/10.1637/0005-2086(2007)051[0106:EIOCAT]2.0.CO;2

Osorio, C., Fletcher, O. J., Abdul-Aziz, T., Gonder, E., Tilley, B., & Ley, D. H. (2007). Pneumonia of turkey breeder hens associated with Mycoplasma synoviae. Avian Diseases, 51(3), 791–796. https://doi.org/10.1637/0005-2086(2007)51[791:POTBHA]2.0.CO;2

Ley, D. H., Sheaffer, D. S., & Dhondt, A. A. (2006). Further western spread of Mycoplasma gallisepticum infection of house finches. Journal of Wildlife Diseases, 42(2), 429–431. https://doi.org/10.7589/0090-3558-42.2.429

Cherry, J. J., Ley, D. H., & Altizer, S. (2006). Genotypic analyses of Mycoplasma gallisepticum isolates from songbirds by random amplification of polymorphic DNA and amplified-fragment length polymorphism. Journal of Wildlife Diseases, 42(2), 421–428. https://doi.org/10.7589/0090-3558-42.2.421

Hong, Y., Garcia, M., Levisohn, S., Savelkoul, P., Leiting, V., Lysnyansky, I., … Kleven, S. H. (2005). Differentiation of Mycoplasma gallisepticum strains using amplified fragment length polymorphism and other DNA-based typing methods. Avian Diseases, 49(1), 43–49. https://doi.org/10.1637/7254-080504R

Dhondt, A. A., Altizer, S., Cooch, E. G., Davis, A. K., Dobson, A., Driscoll, M. J. L., … Sydenstricker, K. V. (2005). Dynamics of a novel pathogen in an avian host: Mycoplasmal conjunctivitis in house finches. Acta Tropica, 94(1), 77–93. https://doi.org/10.1016/j.actatropica.2005.01.009

Sydenstricker, K. V., Dhondt, A. A., Ley, D. H., & Kollias, G. V. (2005). Re-exposure of captive house finches that recovered from Mycoplasma gallisepticum infection. Journal of Wildlife Diseases, 41(2), 326–333. https://doi.org/10.7589/0090-3558-41.2.326

Kollias, G. V., Sydenstricker, K. V., Kollias, H. W., Ley, D. H., Hosseini, P. R., Connolly, V., & Dhondt, A. A. (2004). Experimental infection of house finches with Mycoplasma gallisepticum. Journal of Wildlife Diseases, 40(1), 79–86. https://doi.org/10.7589/0090-3558-40.1.79

Hartup, B. K., Stott-Messick, B., Guzy, M., & Ley, D. H. (2004). Health survey of house finches (Carpodacus mexicanus) from Wisconsin. Avian Diseases, 48(1), 84–90. https://doi.org/10.1637/7067

Kleven, S. H., Fulton, R. M., Garcia, M., Ikuta, V. N., Leiting, V. A., Liu, T., … Wallner-Pendleton, E. (2004). Molecular characterization of Mycoplasma gallisepticum isolates from Turkeys. Avian Diseases, 48(3), 562–569. https://doi.org/10.1637/7148

Pakpinyo, S., Ley, D. H., Barnes, H. J., Vaillancourt, J. P., & Guy, J. (2003). Enhancement of enteropathogenic Escherichia coli pathogenicity in young turkeys by concurrent turkey coronavirus infection. Avian Diseases, 47(2), 396–405. https://doi.org/10.1637/0005-2086(2003)047[0396:EOEECP]2.0.CO;2

Pillai, S. R., Mays, H. L., Ley, D. H., Luttrell, P., Panangala, V. S., Farmer, K. L., & Roberts, S. R. (2003). Molecular variability of house finch Mycoplasma gallisepticum isolates as revealed by sequencing and restriction fragment length polymorphism analysis of the pvpA gene. Avian Diseases, 47(3), 640–648. https://doi.org/10.1637/6095

Pakpinyo, S., Ley, D. H., Barnes, H. J., Vaillancourt, J. P., & Guy, J. S. (2002). Prevalence of Enteropathogenic Escherichia coli in Naturally Occurring Cases of Poult Enteritis–Mortality Syndrome. Avian Diseases, 46(2), 360–369. https://doi.org/10.1637/0005-2086(2002)046[0360:POEECI]2.0.CO;2

Hartup, B. K., Bickal, J. M., Dhondt, A. A., Ley, D. H., & Kollias, G. V. (2001). Dynamics of conjunctivitis and Mycoplasma gallisepticum infections in house finches. Auk, 118(2), 327–333. https://doi.org/10.1642/0004-8038(2001)118[0327:DOCAMG]2.0.CO;2

Ley, D. H. (2001). Identification of avian mycoplasma strains by random amplification of polymorphic DNA (RAPD). Zootecnica International, (6), 46.

Wellehan, J. F. X., Calsamiglia, M., Ley, D. H., Zens, M. S., Amonsin, A., & Kapur, V. (2001). Mycoplasmosis in captive crows and robins from Minnesota. Journal of Wildlife Diseases, 37(3), 547–555. https://doi.org/10.7589/0090-3558-37.3.547

Mikaelian, I., Ley, D. H., Claveau, R., Lemieux, M., & Berube, J. P. (2001). Mycoplasmosis in evening and pine grosbeaks with conjunctivitis in Quebec. Journal of Wildlife Diseases, 37(4), 826–830. https://doi.org/10.7589/0090-3558-37.4.826

Hartup, B. K., Kollias, G. V., & Ley, D. H. (2000). Mycoplasmal conjunctivitis in songbirds from New York. Journal of Wildlife Diseases, 36(2), 257–264. https://doi.org/10.7589/0090-3558-36.2.257

Ley, D. H. (2000). Mycoplasmosis: somethings old and somethings new. Proceedings of the ... Western Poultry Disease Conference, 49(2000), 42–47.

Ley, D. H., Geary, S. J., Berkhoff, J. E., McLaren, J. M., & Levisohn, S. (1998). Mycoplasma sturni from blue jays and northern mockingbirds with conjunctivitis in Florida. Journal of Wildlife Diseases, 34(2), 403–406. https://doi.org/10.7589/0090-3558-34.2.403

Ley, D. H., Stoskopf, M. K., Miller, E. N., Welte, S. C., Berkhoff, J. E., Degernes, L. A., & Fleming, W. J. (1997). Evaluation of treatment of conjunctivitis associated with Mycoplasma gallisepticum in house finches (Carpodacus mexicanus). Journal of Avian Medicine and Surgery, 11(1), 20–24.

Ley, D. H. (1997). Molecular epidemiologic investigations of Mycoplasma gallisepticum conjunctivitis in songbirds by random amplified polymorphic DNA analyses. Emerging Infectious Diseases, 3(3), 375–380. https://doi.org/10.3201/eid0303.970318

Noormohammadi, A. H., Markham, P. F., Whithear, K. G., Walker, I. D., Gurevich, V. A., Ley, D. H., & Browning, G. F. (1997). Mycoplasma synoviae has two distinct phase variable major membrane antigens, one of which is a putative hemagglutinin. Infection and Immunity, 65(7), 2542–2547.

Hoffman, R. W., Luttrell, M. P., Davidson, W. R., & Ley, D. H. (1997). Mycoplasmas in wild turkeys living in association with domestic fowl. Journal of Wildlife Diseases, 33(3), 526–535. https://doi.org/10.7589/0090-3558-33.3.526

Ley, D. H., McLaren, J. M., Miles, A. M., Barnes, H. J., Miller, S. H., & Franz, G. (1997). Transmissibility of live mycoplasma gallisepticum vaccine strains ts-11 and 6/85 from vaccinated layer pullets to sentinel poultry. Avian Diseases, 41(1), 187–194. https://doi.org/10.2307/1592459

Ley, D. H., Berkhoff, J. E., & McLaren, J. M. (1996). Mycoplasma gallisepticum isolated from house finches (Carpodacus mexicanus) with conjunctivitis. Avian Diseases, 40(2), 480. https://doi.org/10.2307/1592250

Ley, D. H., Avakian, A. P., & Berkhoff, J. E. (1993). Clinical Mycoplasma gallisepticum infection in multiplier breeder and meat turkeys caused by F strain: Identification by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, restriction endonuclease analysis, and the polymerase chain reaction. Avian Diseases, 37(3), 854. https://doi.org/10.2307/1592041

Ley, D. H., Flammer, K., Cowen, P., & Whitt, D. (1993). Performance characteristics of diagnostic tests for avian chlamydiosis. Journal of the Association of Avian Veterinarians, 7(4), 203. https://doi.org/10.2307/27671089

Ley, D. H., & Avakian, A. P. (1992). An outbreak of Mycoplasma synoviae infection in North Carolina turkeys: Comparison of isolates by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and restriction endonuclease analysis. Avian Diseases, 36(3), 672. https://doi.org/10.2307/1591763