Research Publications
2023
Albuquerque, FB, HL Bateman, MJ Ryan, & B Montgomery. Model transferability and predicted response of a dryland anuran to climate change: distribution of Anaxyrus microscaphus in the Southwest United States. Journal of Biogeography, in press.
Chaves G, MJ Ryan, F Bolaños, M Cruz, G Köhler, & S Poe. Two new species of semiaquatic Anolis (Norops clade) from Costa Rica. Zootaxa, 5319:249–262. PDF
2022
Araya-Donoso, R, JP Orton, MJ Ryan, CA Jones, K Kusumi, & G Dolby. Geospatial assessment of freshwater invasive species to inform turtle conservation and management. Aquatic Conservation: Marine and Freshwater Ecosystems, 2022:1–12. PDF
Ryan, MJ, WL Heuring, T Sprankle, Z Stevens, et al. THAMNOPHIS RUFIPUNCTATUS (Narrow-headed Gartersnake). LONGEVITY. Herpetological Review, 52:255. PDF
Harrow, RL, A Duran-Granillo, & MJ Ryan. THAMNOPHIS EQUES (Mexican Gartersnake). FORAGING BEHAVIOR. Herpetological Review, 53:702–703.
Leimroth, A, LA Somma, DN Russell, LP Cutts, MJ Ryan, et al. ANOLIS SAGREI (Brown Anole). Distribution in Arizona. Herpetological Review, 53:628–629. PDF
2021
Forzley, MJ, MJ Ryan, IM Latella, JT Giermakowski, E Muths, BH Sigafus, & BR Hossack. Staggered-entry analysis of calling and extinction dynamics of Arizona toads in historically occupied habitats of New Mexico, USA. Ichthyology & Herpetology, 109:851–859. PDF
Riddle, SB, C Gill, EJ Keister, MJ Ryan, & S Lashway. Rana (=Lithobates) catesbeiana (American Bullfrog). FEEDING. Herpetological Review, 52:613–614. PDF
2020
Riddle, SB, CJ Herzog, HL, Bateman, & MJ Ryan. Post-fire breeding behavior in Scaphiopus couchii along the San Pedro River, Arizona. Western North American Naturalist, 80:531–535. PDF
2019
Kandiyeli, D, S Lashway, TR Jones, & MJ Ryan. Thamnophis eques megalops (Northern Mexican Gartersnake). REPRODUCTION. Herpetological Review, 50:88–89. PDF
Owens, AK, MJ Sredl, CD Mosley, MJ Ryan, et al. Rana sphenocephala (Southern Leopard Frog). Herpetological Review, 50:322–323. PDF
2018
Voyles, V, DC Woodhams, V Saenz, AQ Byrne, R Perez, G Rio-Sotelo, MJ Ryan, MC Bletz, F-A Sobell, S Mcletchie, L Reinert, EB Rosenblum, LA Rollins-Smith, R Ibáñez, JM Ray, EJ Griffith, H Ross, & CL Richards-Zawacki. Amphibian recoveries and shifts in disease dynamics are not due to pathogen attenuation. Science, 359, 1517-1519. PDF; Featured in Science Perspective, New York Times, Wired, The Atlantic, ScienceDaily, The Scientist
Poe S, A Nieto-Montes de Oca, O Torres-Carajal, B Truett, G Köhler, MJ Ryan, F Ayala-Varela, JA Velasco, & IM Latella. Comparative evolution of an archetypal adaptive radiation: Island and lineage effects in Anolis lizards. American Naturalist, 191, E-article. PDF; American Naturalist News
2017
Ryan, MJ, IM Latella, TJ Giermakowski, & H Snell. No evidence of hybridization between the Arizona Toad (Anaxyrus microscaphus) and Woodhouse’s Toad (A. woodhousii) in the Gila Region of Southwestern New Mexico. Herpetological Conservation and Biology, 12:565-575. PDF
Poe S & MJ Ryan. Description of two new species similar to Anolis insignis (Squamata: Iguanidae) and resurrection of Anolis (Diaphoranolis) brooksi. Amphibian & Reptile Conservation, 11:1-16 (e141). PDF
Poe S, A Nieto-Montes de Oca, K de Queiroz, J Velasco, B Truett, L Grey, MJ Ryan, G Köhler, F Ayala-Varela, & IM Latella. A phylogenetic, biogeographic, and taxonomic study of all extant species of Anolis (Squamata; Iguanidae). Systematic Biology, 66:663-697. PDF
Armstead JV, F Ayala-Varela, O Torres-Carvajal, MJ Ryan, & S Poe. Systematics and ecology of Anolis biporcatus (Squamata: Iguanidae).Salamandra, 53:285-293. PDF
2016
Ryan MJ, IM Latella, TJ Giermakowski, H Snell, S Poe, RE Pangle, N Gehres, WT Pockman, & NG McDowell. Too dry for lizards: short-term rainfall influence on lizard microhabitat use in an experimental rainfall manipulation within a piñon-juniper woodland. Functional Ecology, 30:964–973. PDF; UNM Press Release
Gratwicke B, et al. (MJR 17th author). Evaluating the probability of avoiding disease-related extinctions of Panamanian amphibians through captive-breeding programs. Animal Conservation, 19:324-336. PDF; Featured in Smithsonian Science News
Marshall M, MJ Ryan, & JD Camper. Eleutherodactylus planirostris (Greenhouse Frog), Range Extension. Herpetological Review, 47:247. PDF
Ryan MJ, IM Latella, TJ Giermakowski, G Gustafson, & H Snell. Anaxyrus microscaphus. Diet. Herpetological Review, 47:436. PDF
Ryan MJ, CT McAllister, LA Durden, Y Kiryu, JH Landsberg, IM Latella, & JT Giermakowski. Anaxyrus microscaphus (Arizona Toad) ECTOPARASITES. Herpetological Review, 47:436-438. PDF
Latella IM, TK Kennedy, & MJ Ryan. Lampropeltis alterna (Graybanded Kingsnake). Range Extension. Herpetological Review, 47:426-427. PDF
2015
Ryan MJ, IM Latella, A García-Rodríguez & C Gilman. Notes on the breeding habits of seven snake species in southwest Costa Rica. Herpetological Notes, 8:669-671. PDF
Ryan, MJ, NJ Scott, JA Cook, B Willink, G Chaves, F Bolaños, A. García-Rodríguez, IM Latella, & SE Koerner. Too wet for frogs: changes in a tropical leaf litter frog community coincide with La Niña. Ecosphere, 6(1):4. PDF; UNM Press Release; Featured in Environmental Monitor
Arias, E, G Chaves, A García-Rodríguez, MJ Ryan. Notes on predation of Rhaebo haematiticus (Anura: Bufonidae) by Leptodeira septentrionalis (Serpentes: Dipsadidae) in the Caribbean slope of Costa Rica. Mesoamerican Herpetology, 2:563-566. PDF
Koehler, JJ, S Poe, MJ Ryan & G Kohler. Anolis marsupialis Taylor 1956, a valid species from southern Pacific Costa Rica (Reptilia, Squamata, Dactyloidae). Zootaxa, 3915: 111-122. PDF
2014
Ryan, MJ, MM Fuller, NJ Scott, JA Cook, S Poe, B Willink, G Chaves & F Bolaños. Individualistic population responses of five frog species in two changing tropical environments over time. PLoS One 9(5): e98351. PDF; Featured in PLOS Collections - Ecological Impacts of Climate Change
Ryan, MJ, IM Latella, CW Painter, JT Giermakowski, BL Christman, RD Jennings, & JL Voyles. First Record of Batrachochytrium dendrobatidis in the Arizona Toad (Anaxyrus microscaphus) in Southwestern New Mexico, USA. Herpetological Review, 45:616-618. PDF
Chaves, G, A Garcia-Rodriguez, H Zumbado-Ulate, E Gomez, VT Vredenburg & MJ Ryan. Rediscovery of the critically endangered streamside frog Craugastor taurus (Craugastoridae) in Costa Rica. Tropical Conservation Science 7:628-638. PDF; Featured in Epoch Times and Mongabay en espanol
Rocha, LA, et al. (66th author). Collecting biological specimens is essential in science and conservation. Science 344:814-815. PDF; Featured on NPR Morning Edition
Ryan, MJ & S Poe. Seasonal shifts in forest and riparian habitat use in the lizard Anolis polylepis. Journal of Herpetology 48:495-499. PDF; Anole Annals
2013
Ryan, MJ, S Poe, EW Schaad & AJ Aquilar-Kirigin. Ameerga hahneli (NCN). Range Extension. Herpetological Review 44: 471.
Ryan, MJ S Poe, IM Latella & J Davis. Craugastor laevissimus. (NCN). New population. Herpetological Review 44: 471.
2011
Ryan, MJ & D Barry. Interactions between two dart-poison frogs (Anura: Dendrobatidae) in phytotelmata-breeding pools from Costa Rica. Journal of Herpetology 45:438-443. PDF
Poe, S, TJ Giermakowski, EW Schaad, I Latella, EP Hulebak & MJ Ryan. Ancient colonization predicts recent naturalization in Anolis lizards. Evolution 4:1195-1202. PDF
2010
Ryan, MJ, KR Lips & TJ Giermakowski. A new species of Pristimantis (Anura: Terrarana: Strabomantidae) from lower Central America. Journal of Herpetology 44:193-200. PDF
Ryan, MJ, F Bolaños & G Chaves. Museums help prioritize conservation goals, Reply to Stokstad, Despite Progress, Biodiversity Declines. Science. PDF
Crawford, AJ, MJ Ryan & CA Jaramillo. A new species of Pristimantis (Anura: Strabomantidae) from the Pacific coast of the Darien Province, Panama, with a molecular analysis of its phylogenetic position. Herpetologica 66:192-206. PDF
Ryan, MJ, JM Savage, KR Lips & TJ Giermakowski. A new species of Craugastor (Anura: Craugastoridae) of the rugulosus species series from west-central Panama. Copeia 2010:405-409. PDF; Featured in Science Daily
Ryan, MJ, NJ Blea, IM Latella & MA Kull. Leptodactylus savagei (Smokey Jungle Frog) Antipredator defense. Herpetological Review 3:337-338. PDF
Lovich, RE, TS Akre, MJ Ryan, et al. New herpetofaunal records for southern Honduras from Choluteca and Valle Departamentos. Herpetological Review 41:112-114. PDF
2009
Poe, S, IM Latella, MJ Ryan & EW Schaad. A new species of Anolis from Panama. Phyllomedusa 8:81-87. PDF
2008
Lovich, RE, MJ Ryan, AP Pessier, & B Claypool. Infection with the fungus Batrachochytrium dendrobatidis in a non-native Lithobates berlandieri below sea level in the Coachella Valley, California, USA. Herpetological Review 39:315-317. PDF
Ryan, MJ, KR Lips & ME Eichholtz. Decline and extirpation of an endangered Panamanian stream frog population (Craugastor punctariolus) due to an outbreak of chytridiomycosis. Biological Conservation 141:1636-1647. PDF
2007
Ryan, MJ. Physalaemus pustulosus Dispersal. Herpetological Review 38:190-191. PDF
2006
Ryan, MJ, B Kubicki, & RB Pushendorf. Fighting behavior of Cocharanella granulosa, (Family: Centrolenidae). Herpetological Review 37:201-202. PDF
2005
Ryan, MJ. Egg attendance by female frogs in two species of Eleutherodactylus from Costa Rica. Herpetological Review 36:22-25. PDF
Ryan, MJ, E Berlin & R Gagliardo. Further exploration in search of Atelopus varius in Costa Rica. Froglog 69. PDF
2004
Pushendorf, RB, B Kubicki, MJ Ryan & C Vaughan. Reproduction Cochranella albomaculata. Herpetological Review 35:52. PDF
Ryan, MJ & KR Lips. Feeding behavior of Sibon argus. Herpetological Review 35:278. PDF
2002
Ryan, MJ. Phyllobates vittatus. Geographic Distribution. Herpetological Review 33:318. PDF
Ryan, MJ. Micrurus clarki. Geographic Distribution. Herpetological Review 33:324. PDF
Book Contributions
Jones, TR, MJ Ryan, TB Cotton, & JM Servoss. Thamnophis eques, Mexican Gartersnake. In Snakes of Arizona. A Holycross & J Mitchell (eds). Book in production.
Ryan, MJ. 2009. Great Basin Collared Lizard (Crotophytus bicinctores). In Lizards of the Southwest United States. L Jones & R Lovich (eds). Rio Nuevo Publishers.
Ryan, MJ. 2009. Western Skink (Eumeces skiltonianus). In Lizards of the Southwest United States. L Jones & R Lovich (eds). Rio Nuevo Publishers.
Ryan, MJ. 2009. Sagebrush Lizard (Sceloporus graciosus). In Lizards of the Southwest United States. L Jones & R Lovich (eds). Rio Nuevo Publishers.
Technical Reports
2021
Ryan, MJ, RL Harrow, & A Duran-Granillo. Survey protocol for the Arizona Toad (Anaxyrus microscaphus). Nongame & Endangered Wildlife Program Technical Report 337. Arizona Game & Fish Department (AZGFD), Phoenix, AZ.
2020
Larson, A, MJ Ryan, & JM Myrand. Bear Wallow Creek Narrow-headed Gartersnake Surveys Report 2019-2020. AZGFD, Phoenix, AZ. PDF
2019
Ryan MJ, AB Smith, S Lashway, KK Smith, SB Riddle, CM Akins, BR Blais & KT Krahn. 2019. A five-year Narrow-headed Gartersnake (Thamnophis rufipunctatus) survey summary from Canyon Creek, Arizona. Nongame & Endangered Wildlife Program Technical Report 323. AZGFD, Phoenix, AZ. PDF
Boyarski VL, MJ Ryan, & TB Cotten. Monitoring Program for Northern Mexican Gartersnakes (Thamnophis eques megalops) at Page Springs and Bubbling Ponds Fish Hatcheries. Nongame & Endangered Wildlife Program Technical Report 317. AZGFD, Phoenix, AZ. PDF
2018
Giermakowski TJ, MJ Ryan & IM Latella. Evaluation of the distribution & status of the Gila Monster (Heloderma suspectum) in southwestern New Mexico. New Mexico Department of Game & Fish (NMDGF), Final Report.
2017
Giermakowski TJ, IM Latella, & MJ Ryan. Evaluation of the distribution & conservation status of the Gila Monster (Heloderma suspectum) in southwestern New Mexico. New Mexico Department of Game & Fish, Interim Report.
2016
Ryan MJ, IM Latella, TJ Giermakowski, & H Snell. Effects of El Niño on breeding behavior or the Arizona Toad (Anaxyrus microscaphus) in New Mexico. New Mexico Department of Game & Fish, Interim Report.
2015
Ryan, MJ. Arizona Toad (Anaxyrus microscaphus) comments to U.S. Fish & Wildlife Service. Endangered and Threatened Wildlife and Plants; 90-Day Findings on 31 Petitions. Available on request.
Ryan MJ, IM Latella, TJ Giermakowski, & H Snell. Patterns of occupancy and distribution of the Arizona Toad (Anaxyrus microscaphus) in New Mexico. New Mexico Game & Fish, Interim Report.
IM Latella, MJ Ryan, TJ Giermakowski, & H Snell. Distribution and status of Craugastor augusti in New Mexico. New Mexico Department of Game & Fish, Final Report PDF
IM Latella, MJ Ryan, TJ Giermakowski, & H Snell. Distribution and status of Craugastor augusti in New Mexico. New Mexico Game & Fish, Interim Report.
2014
Ryan, MJ & IM Latella. Current status of the Arizona Toad (Anaxyrus microscaphus) in New Mexico: Identification and evaluation of potential threats to its persistence. New Mexico Game and Fish, Final Report. PDF
2013
Ryan, MJ & IM Latella. Current status of the Arizona toad (Anaxyrus microscaphus) in New Mexico: identification and evaluation of potential threats to its persistence. New Mexico Department of Game and Fish, Final Report. PDF
2006
Lovich, RE, T Akre, MJ Ryan, NJ Scott, R Ford. Herpetofaunal survey of Cerro Guanacare, Montana la Botija, and Isla del Tigre protected areas in southern Honduras. United States Agency for International Development, Final Report. PDF
Blog Contributions (click title to link)
2014
Anole Annals: Seasonal shifts in relative density of the lizard Anolis polylepis in forest and riparian habitats.
2013
UNM Bioblog: Jackie Robinson, Pee Wee Reese and the pursuit of science
UNM Bioblog: Glass Frogs
2012
UNM Bioblog: The Lazarus Effect
2011
UNM Bioblog: In search of ghosts
2023
Albuquerque, FB, HL Bateman, MJ Ryan, & B Montgomery. Model transferability and predicted response of a dryland anuran to climate change: distribution of Anaxyrus microscaphus in the Southwest United States. Journal of Biogeography, in press.
Chaves G, MJ Ryan, F Bolaños, M Cruz, G Köhler, & S Poe. Two new species of semiaquatic Anolis (Norops clade) from Costa Rica. Zootaxa, 5319:249–262. PDF
2022
Araya-Donoso, R, JP Orton, MJ Ryan, CA Jones, K Kusumi, & G Dolby. Geospatial assessment of freshwater invasive species to inform turtle conservation and management. Aquatic Conservation: Marine and Freshwater Ecosystems, 2022:1–12. PDF
Ryan, MJ, WL Heuring, T Sprankle, Z Stevens, et al. THAMNOPHIS RUFIPUNCTATUS (Narrow-headed Gartersnake). LONGEVITY. Herpetological Review, 52:255. PDF
Harrow, RL, A Duran-Granillo, & MJ Ryan. THAMNOPHIS EQUES (Mexican Gartersnake). FORAGING BEHAVIOR. Herpetological Review, 53:702–703.
Leimroth, A, LA Somma, DN Russell, LP Cutts, MJ Ryan, et al. ANOLIS SAGREI (Brown Anole). Distribution in Arizona. Herpetological Review, 53:628–629. PDF
2021
Forzley, MJ, MJ Ryan, IM Latella, JT Giermakowski, E Muths, BH Sigafus, & BR Hossack. Staggered-entry analysis of calling and extinction dynamics of Arizona toads in historically occupied habitats of New Mexico, USA. Ichthyology & Herpetology, 109:851–859. PDF
Riddle, SB, C Gill, EJ Keister, MJ Ryan, & S Lashway. Rana (=Lithobates) catesbeiana (American Bullfrog). FEEDING. Herpetological Review, 52:613–614. PDF
2020
Riddle, SB, CJ Herzog, HL, Bateman, & MJ Ryan. Post-fire breeding behavior in Scaphiopus couchii along the San Pedro River, Arizona. Western North American Naturalist, 80:531–535. PDF
2019
Kandiyeli, D, S Lashway, TR Jones, & MJ Ryan. Thamnophis eques megalops (Northern Mexican Gartersnake). REPRODUCTION. Herpetological Review, 50:88–89. PDF
Owens, AK, MJ Sredl, CD Mosley, MJ Ryan, et al. Rana sphenocephala (Southern Leopard Frog). Herpetological Review, 50:322–323. PDF
2018
Voyles, V, DC Woodhams, V Saenz, AQ Byrne, R Perez, G Rio-Sotelo, MJ Ryan, MC Bletz, F-A Sobell, S Mcletchie, L Reinert, EB Rosenblum, LA Rollins-Smith, R Ibáñez, JM Ray, EJ Griffith, H Ross, & CL Richards-Zawacki. Amphibian recoveries and shifts in disease dynamics are not due to pathogen attenuation. Science, 359, 1517-1519. PDF; Featured in Science Perspective, New York Times, Wired, The Atlantic, ScienceDaily, The Scientist
Poe S, A Nieto-Montes de Oca, O Torres-Carajal, B Truett, G Köhler, MJ Ryan, F Ayala-Varela, JA Velasco, & IM Latella. Comparative evolution of an archetypal adaptive radiation: Island and lineage effects in Anolis lizards. American Naturalist, 191, E-article. PDF; American Naturalist News
2017
Ryan, MJ, IM Latella, TJ Giermakowski, & H Snell. No evidence of hybridization between the Arizona Toad (Anaxyrus microscaphus) and Woodhouse’s Toad (A. woodhousii) in the Gila Region of Southwestern New Mexico. Herpetological Conservation and Biology, 12:565-575. PDF
Poe S & MJ Ryan. Description of two new species similar to Anolis insignis (Squamata: Iguanidae) and resurrection of Anolis (Diaphoranolis) brooksi. Amphibian & Reptile Conservation, 11:1-16 (e141). PDF
Poe S, A Nieto-Montes de Oca, K de Queiroz, J Velasco, B Truett, L Grey, MJ Ryan, G Köhler, F Ayala-Varela, & IM Latella. A phylogenetic, biogeographic, and taxonomic study of all extant species of Anolis (Squamata; Iguanidae). Systematic Biology, 66:663-697. PDF
Armstead JV, F Ayala-Varela, O Torres-Carvajal, MJ Ryan, & S Poe. Systematics and ecology of Anolis biporcatus (Squamata: Iguanidae).Salamandra, 53:285-293. PDF
2016
Ryan MJ, IM Latella, TJ Giermakowski, H Snell, S Poe, RE Pangle, N Gehres, WT Pockman, & NG McDowell. Too dry for lizards: short-term rainfall influence on lizard microhabitat use in an experimental rainfall manipulation within a piñon-juniper woodland. Functional Ecology, 30:964–973. PDF; UNM Press Release
Gratwicke B, et al. (MJR 17th author). Evaluating the probability of avoiding disease-related extinctions of Panamanian amphibians through captive-breeding programs. Animal Conservation, 19:324-336. PDF; Featured in Smithsonian Science News
Marshall M, MJ Ryan, & JD Camper. Eleutherodactylus planirostris (Greenhouse Frog), Range Extension. Herpetological Review, 47:247. PDF
Ryan MJ, IM Latella, TJ Giermakowski, G Gustafson, & H Snell. Anaxyrus microscaphus. Diet. Herpetological Review, 47:436. PDF
Ryan MJ, CT McAllister, LA Durden, Y Kiryu, JH Landsberg, IM Latella, & JT Giermakowski. Anaxyrus microscaphus (Arizona Toad) ECTOPARASITES. Herpetological Review, 47:436-438. PDF
Latella IM, TK Kennedy, & MJ Ryan. Lampropeltis alterna (Graybanded Kingsnake). Range Extension. Herpetological Review, 47:426-427. PDF
2015
Ryan MJ, IM Latella, A García-Rodríguez & C Gilman. Notes on the breeding habits of seven snake species in southwest Costa Rica. Herpetological Notes, 8:669-671. PDF
Ryan, MJ, NJ Scott, JA Cook, B Willink, G Chaves, F Bolaños, A. García-Rodríguez, IM Latella, & SE Koerner. Too wet for frogs: changes in a tropical leaf litter frog community coincide with La Niña. Ecosphere, 6(1):4. PDF; UNM Press Release; Featured in Environmental Monitor
Arias, E, G Chaves, A García-Rodríguez, MJ Ryan. Notes on predation of Rhaebo haematiticus (Anura: Bufonidae) by Leptodeira septentrionalis (Serpentes: Dipsadidae) in the Caribbean slope of Costa Rica. Mesoamerican Herpetology, 2:563-566. PDF
Koehler, JJ, S Poe, MJ Ryan & G Kohler. Anolis marsupialis Taylor 1956, a valid species from southern Pacific Costa Rica (Reptilia, Squamata, Dactyloidae). Zootaxa, 3915: 111-122. PDF
2014
Ryan, MJ, MM Fuller, NJ Scott, JA Cook, S Poe, B Willink, G Chaves & F Bolaños. Individualistic population responses of five frog species in two changing tropical environments over time. PLoS One 9(5): e98351. PDF; Featured in PLOS Collections - Ecological Impacts of Climate Change
Ryan, MJ, IM Latella, CW Painter, JT Giermakowski, BL Christman, RD Jennings, & JL Voyles. First Record of Batrachochytrium dendrobatidis in the Arizona Toad (Anaxyrus microscaphus) in Southwestern New Mexico, USA. Herpetological Review, 45:616-618. PDF
Chaves, G, A Garcia-Rodriguez, H Zumbado-Ulate, E Gomez, VT Vredenburg & MJ Ryan. Rediscovery of the critically endangered streamside frog Craugastor taurus (Craugastoridae) in Costa Rica. Tropical Conservation Science 7:628-638. PDF; Featured in Epoch Times and Mongabay en espanol
Rocha, LA, et al. (66th author). Collecting biological specimens is essential in science and conservation. Science 344:814-815. PDF; Featured on NPR Morning Edition
Ryan, MJ & S Poe. Seasonal shifts in forest and riparian habitat use in the lizard Anolis polylepis. Journal of Herpetology 48:495-499. PDF; Anole Annals
2013
Ryan, MJ, S Poe, EW Schaad & AJ Aquilar-Kirigin. Ameerga hahneli (NCN). Range Extension. Herpetological Review 44: 471.
Ryan, MJ S Poe, IM Latella & J Davis. Craugastor laevissimus. (NCN). New population. Herpetological Review 44: 471.
2011
Ryan, MJ & D Barry. Interactions between two dart-poison frogs (Anura: Dendrobatidae) in phytotelmata-breeding pools from Costa Rica. Journal of Herpetology 45:438-443. PDF
Poe, S, TJ Giermakowski, EW Schaad, I Latella, EP Hulebak & MJ Ryan. Ancient colonization predicts recent naturalization in Anolis lizards. Evolution 4:1195-1202. PDF
2010
Ryan, MJ, KR Lips & TJ Giermakowski. A new species of Pristimantis (Anura: Terrarana: Strabomantidae) from lower Central America. Journal of Herpetology 44:193-200. PDF
Ryan, MJ, F Bolaños & G Chaves. Museums help prioritize conservation goals, Reply to Stokstad, Despite Progress, Biodiversity Declines. Science. PDF
Crawford, AJ, MJ Ryan & CA Jaramillo. A new species of Pristimantis (Anura: Strabomantidae) from the Pacific coast of the Darien Province, Panama, with a molecular analysis of its phylogenetic position. Herpetologica 66:192-206. PDF
Ryan, MJ, JM Savage, KR Lips & TJ Giermakowski. A new species of Craugastor (Anura: Craugastoridae) of the rugulosus species series from west-central Panama. Copeia 2010:405-409. PDF; Featured in Science Daily
Ryan, MJ, NJ Blea, IM Latella & MA Kull. Leptodactylus savagei (Smokey Jungle Frog) Antipredator defense. Herpetological Review 3:337-338. PDF
Lovich, RE, TS Akre, MJ Ryan, et al. New herpetofaunal records for southern Honduras from Choluteca and Valle Departamentos. Herpetological Review 41:112-114. PDF
2009
Poe, S, IM Latella, MJ Ryan & EW Schaad. A new species of Anolis from Panama. Phyllomedusa 8:81-87. PDF
2008
Lovich, RE, MJ Ryan, AP Pessier, & B Claypool. Infection with the fungus Batrachochytrium dendrobatidis in a non-native Lithobates berlandieri below sea level in the Coachella Valley, California, USA. Herpetological Review 39:315-317. PDF
Ryan, MJ, KR Lips & ME Eichholtz. Decline and extirpation of an endangered Panamanian stream frog population (Craugastor punctariolus) due to an outbreak of chytridiomycosis. Biological Conservation 141:1636-1647. PDF
2007
Ryan, MJ. Physalaemus pustulosus Dispersal. Herpetological Review 38:190-191. PDF
2006
Ryan, MJ, B Kubicki, & RB Pushendorf. Fighting behavior of Cocharanella granulosa, (Family: Centrolenidae). Herpetological Review 37:201-202. PDF
2005
Ryan, MJ. Egg attendance by female frogs in two species of Eleutherodactylus from Costa Rica. Herpetological Review 36:22-25. PDF
Ryan, MJ, E Berlin & R Gagliardo. Further exploration in search of Atelopus varius in Costa Rica. Froglog 69. PDF
2004
Pushendorf, RB, B Kubicki, MJ Ryan & C Vaughan. Reproduction Cochranella albomaculata. Herpetological Review 35:52. PDF
Ryan, MJ & KR Lips. Feeding behavior of Sibon argus. Herpetological Review 35:278. PDF
2002
Ryan, MJ. Phyllobates vittatus. Geographic Distribution. Herpetological Review 33:318. PDF
Ryan, MJ. Micrurus clarki. Geographic Distribution. Herpetological Review 33:324. PDF
Book Contributions
Jones, TR, MJ Ryan, TB Cotton, & JM Servoss. Thamnophis eques, Mexican Gartersnake. In Snakes of Arizona. A Holycross & J Mitchell (eds). Book in production.
Ryan, MJ. 2009. Great Basin Collared Lizard (Crotophytus bicinctores). In Lizards of the Southwest United States. L Jones & R Lovich (eds). Rio Nuevo Publishers.
Ryan, MJ. 2009. Western Skink (Eumeces skiltonianus). In Lizards of the Southwest United States. L Jones & R Lovich (eds). Rio Nuevo Publishers.
Ryan, MJ. 2009. Sagebrush Lizard (Sceloporus graciosus). In Lizards of the Southwest United States. L Jones & R Lovich (eds). Rio Nuevo Publishers.
Technical Reports
2021
Ryan, MJ, RL Harrow, & A Duran-Granillo. Survey protocol for the Arizona Toad (Anaxyrus microscaphus). Nongame & Endangered Wildlife Program Technical Report 337. Arizona Game & Fish Department (AZGFD), Phoenix, AZ.
2020
Larson, A, MJ Ryan, & JM Myrand. Bear Wallow Creek Narrow-headed Gartersnake Surveys Report 2019-2020. AZGFD, Phoenix, AZ. PDF
2019
Ryan MJ, AB Smith, S Lashway, KK Smith, SB Riddle, CM Akins, BR Blais & KT Krahn. 2019. A five-year Narrow-headed Gartersnake (Thamnophis rufipunctatus) survey summary from Canyon Creek, Arizona. Nongame & Endangered Wildlife Program Technical Report 323. AZGFD, Phoenix, AZ. PDF
Boyarski VL, MJ Ryan, & TB Cotten. Monitoring Program for Northern Mexican Gartersnakes (Thamnophis eques megalops) at Page Springs and Bubbling Ponds Fish Hatcheries. Nongame & Endangered Wildlife Program Technical Report 317. AZGFD, Phoenix, AZ. PDF
2018
Giermakowski TJ, MJ Ryan & IM Latella. Evaluation of the distribution & status of the Gila Monster (Heloderma suspectum) in southwestern New Mexico. New Mexico Department of Game & Fish (NMDGF), Final Report.
2017
Giermakowski TJ, IM Latella, & MJ Ryan. Evaluation of the distribution & conservation status of the Gila Monster (Heloderma suspectum) in southwestern New Mexico. New Mexico Department of Game & Fish, Interim Report.
2016
Ryan MJ, IM Latella, TJ Giermakowski, & H Snell. Effects of El Niño on breeding behavior or the Arizona Toad (Anaxyrus microscaphus) in New Mexico. New Mexico Department of Game & Fish, Interim Report.
2015
Ryan, MJ. Arizona Toad (Anaxyrus microscaphus) comments to U.S. Fish & Wildlife Service. Endangered and Threatened Wildlife and Plants; 90-Day Findings on 31 Petitions. Available on request.
Ryan MJ, IM Latella, TJ Giermakowski, & H Snell. Patterns of occupancy and distribution of the Arizona Toad (Anaxyrus microscaphus) in New Mexico. New Mexico Game & Fish, Interim Report.
IM Latella, MJ Ryan, TJ Giermakowski, & H Snell. Distribution and status of Craugastor augusti in New Mexico. New Mexico Department of Game & Fish, Final Report PDF
IM Latella, MJ Ryan, TJ Giermakowski, & H Snell. Distribution and status of Craugastor augusti in New Mexico. New Mexico Game & Fish, Interim Report.
2014
Ryan, MJ & IM Latella. Current status of the Arizona Toad (Anaxyrus microscaphus) in New Mexico: Identification and evaluation of potential threats to its persistence. New Mexico Game and Fish, Final Report. PDF
2013
Ryan, MJ & IM Latella. Current status of the Arizona toad (Anaxyrus microscaphus) in New Mexico: identification and evaluation of potential threats to its persistence. New Mexico Department of Game and Fish, Final Report. PDF
2006
Lovich, RE, T Akre, MJ Ryan, NJ Scott, R Ford. Herpetofaunal survey of Cerro Guanacare, Montana la Botija, and Isla del Tigre protected areas in southern Honduras. United States Agency for International Development, Final Report. PDF
Blog Contributions (click title to link)
2014
Anole Annals: Seasonal shifts in relative density of the lizard Anolis polylepis in forest and riparian habitats.
2013
UNM Bioblog: Jackie Robinson, Pee Wee Reese and the pursuit of science
UNM Bioblog: Glass Frogs
2012
UNM Bioblog: The Lazarus Effect
2011
UNM Bioblog: In search of ghosts