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., 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., … Geary, 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 B-BIOLOGICAL SCIENCES, 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., Jr. (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-SGM, 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., Jr., 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. S. (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, SR, Mays, H. L., Ley, D. H., Luttrell, P., Panangala, V. S., Farmer, K. L., & Roberts, SR. (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., Berkhoff, J. E., & Levisohn, S. (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), 480–483. 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), 854–862. 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), 672–678. https://doi.org/10.2307/1591763