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Davis, Drew

Drew R Davis

Research Affiliate - Postdoctoral
Department of Integrative Biology

Ecology, Conservation, and Natural History of Amphibians and Reptiles


Phone: 512-471-3434

Office Location


Ph.D., Biological Sciences; University of South Dakota

M.S., Population and Conservation Biology; Texas State University

B.S., Biology (Ecology, Evolution, Behavior); The University of Texas at Austin


Kiesow AM, Davis DR. 2021. Field Guide to the Amphibians and Reptiles of South Dakota. Second edition. South Dakota Department of Game, Fish and Parks, Pierre, South Dakota. vii + 161 pp.


Book Chapters:

Davis DR, LaDuc TJ. 2022. Texas’ threatened and endangered wildlife. In Hatch R (ed.), Texas Almanac 2022–2023, 71st edition, p. 101. Texas State Historical Association, Austin, Texas.

Davis DR, LaDuc TJ. 2022. Texas wildlife. In Hatch R (ed.), Texas Almanac 2022–2023, 71st edition, pp. 75–100. Texas State Historical Association, Austin, Texas.



Ruppert KM, Davis DR, Rahman MS, Kline RJ. 2022. Development and assessment of an environmental DNA (eDNA) assay for a cryptic Siren (Amphibia: Sirenidae). Environmental Advances. doi.org/10.1016/j.envadv.2021.100163.

Bogolin AP, Davis DR, Kline RJ, Rahman FA. 2021. A drone-based survey for large, basking freshwater turtle species. PLoS ONE 16:e0257720.

Davis DR, Allen B. 2020. Effects of the COVID-19 pandemic on herpetologists. World Congress of Herpetology Newsletter 1(2):26–31.

Siler CD, Freitas ES, Sheridan JA, Maguire SN, Davis DR, Watters JL, Wang K, Diesmos AC, Brown RM. 2020. Additions to Philippine slender skinks of the Brachymeles bonitae complex (Reptilia: Squamata: Scincidae) IV: resurrection and redescription of Brachymeles burksi. Philippine Journal of Systematic Biology 14:10.26757/pjsb2020b14005.

Skadsen DR, Davis DR. 2020. Wood frogs (Rana sylvatica) in southwestern Roberts County and western Grant County, South Dakota. The Prairie Naturalist 52:31–32.

Davis DR, Ferguson KJ, Schwarz MS, Kerby JL. 2020. Effects of agricultural pollutants on stress hormones and viral infection in larval salamanders. Wetlands 40:577–586.

Christiansen JL, Davis DR, Jacobson ER, LaDuc TJ. 2020. A potential new shell disease process revealed by a long-term field study of the yellow mud turtle, Kinosternon flavescens, in Texas. Journal of Herpetology 54:1–8.

Smith SN, Watters JL, Ellsworth ED, Davis DR, Siler CD. 2019. Assessment of Batrachochytrium dendrobatidis and ranavirus among wild amphibians from four Philippine islands. Herpetological Review 50:729–734.

Millikin AR, Woodley SK, Davis DR, Moore IT, Anderson JT. 2019. Water-borne corticosterone and plasma corticosterone are not correlated in spotted salamanders. Ecology and Evolution 9:13942–13953.

Narayan EJ, Forsburg ZR, Davis DR, Gabor CR. 2019. Non-invasive methods for measuring and monitoring stress physiology in imperiled amphibians. Frontiers in Ecology and Evolution 7:431.

Smith SN, Watters JL, Marhanka EC, McMillin SL, Davis DR, Farkas JK, Siler CD. 2019. Investigating ranavirus prevalence in central Oklahoma, USA, amphibians. Herpetological Review 50:508–512.

Davis DR, Farkas JK, Kruisselbrink TR, Watters JL, Ellsworth ED, Kerby JL, Siler CD. 2019. Prevalence and distribution of ranavirus in amphibians from southeastern Oklahoma, USA. Herpetological Conservation and Biology 14:360–369.

Watters JL, McMillin SL, Marhanka EC, Davis DR, Farkas JK, Kerby JL, Siler CD. 2019. Seasonality in Batrachochytrium dendrobatidis detection in amphibians in central Oklahoma, USA. Journal of Zoo and Wildlife Medicine 50:492–497.

Millikin AR, Woodley SK, Davis DR, Anderson JT. 2019. Habitat characteristics in created vernal pools impact spotted salamander water-borne corticosterone levels. Wetlands 39:803–814.

Butterfield MM, Davis DR, Madison JD, Kerby JL. 2019. Surveillance of Ranavirus in False Map Turtles (Graptemys pseudogeographica) along the lower Missouri River, USA. Herpetological Review 50:76–78.

Davis DR. 2018. Red-bellied Snake (Storeria occipitomaculata) copulation in South Dakota. The Prairie Naturalist 50:72–73.

Madison JD, Austin SD, Davis DR, Kerby JL. 2018. Bacterial microbiota response in Graptemys pseudogeographica to captivity and Roundup® exposure. Copeia 106:580–588.

Watters JL, Davis DR, Yuri T, Siler CD. 2018. Concurrent infection of Batrachochytrium dendrobatidis and ranavirus among native amphibians from northeastern Oklahoma, USA. Journal of Aquatic Animal Health 30:291–301.

Davis DR. 2018. Mapping amphibians and reptiles of South Dakota. South Dakota Conservation Digest 85:34–37.

Siler CD, Heitz BB, Davis DR, Freitas ES, Aowphol A, Termprayoon K, Grismer LL. 2018. New supple skink, genus Lygosoma (Reptilia: Squamata: Scincidae), from Indochina and redescription of Lygosoma quadrupes (Linnaeus, 1766). Journal of Herpetology 52:332–347.

Davis DR, LaDuc TJ. 2018. Amphibians and reptiles of C. E. Miller Ranch and the Sierra Vieja, Chihuahuan Desert, Texas, USA. ZooKeys 735:97–130.

Gabor CR, Davis DR, Kim DS, Zabierek KC, Bendik NF. 2018. Urbanization is associated with elevated corticosterone in Jollyville Plateau salamanders. Ecological Indicators 85:229–235.

Siler CD, Davis DR, Watters JL, Freitas ES, Griffith OW, Binaday JWB, Lobos AHT, Amarga AKS, Brown RM. 2017. The first record of the Pseudogekko brevipes Complex from the northern Philippines, with description of a new species. Herpetologica 73:162–175.

Davis DR, DeSantis DL, Gabor CR. 2017. Antipredator behavior of the Barton Springs salamander (Eurycea sosorum) in response to aquatic invertebrates: potential consequences of habitat restoration. Hydrobiologia 795:129–137.

Marhanka EC, Watters JL, Huron NA, McMillin SL, Winfrey CC, Curtis DJ, Davis DR, Farkas JK, Kerby JL, Siler CD. 2017. Detection of high prevalence of Batrachochytrium dendrobatidis in amphibians from southern Oklahoma, USA. Herpetological Review 48:70–74.

Siler CD, Davis DR, Diesmos AC, Guinto F, Whitsett C, Brown RM. 2016. A new species of Pseudogekko (Squamata: Gekkonidae) from the Romblon Island Group, central Philippines. Zootaxa 4139:248–260.

Davis DR, Geheber AD, Watters JL, Penrod ML, Feller KD, Ashford A, Kouri J, Nguyen D, Shauberger K, Sheatsley K, Winfrey C, Wong R, Sanguila MB, Brown RM, Siler CD. 2016. Additions to Philippine slender skinks of the Brachymeles bonitae Complex (Reptilia: Squamata: Scincidae) III: a new species from Tablas Island. Zootaxa 4132:30–43.

Siler CD, Davis DR, Freitas ES, Huron NA, Geheber AD, Watters JL, Penrod ML, Papeş M, Amrein A, Anwar A, Cooper D, Hein T, Manning A, Patel N, Pinaroc L, Diesmos AC, Diesmos ML, Oliveros CH, Brown RM. 2016. Additions to Philippine slender skinks of the Brachymeles bonitaeComplex (Reptilia: Squamata: Scincidae) II: a new species from the northern Philippines. Zootaxa 4132:15–29.

Geheber AD, Davis DR, Watters JL, Penrod ML, Feller KD, Davey CS, Ellsworth ED, Flanagan RL, Heitz BD, Moore T, Nguyen MDC, Roberts A, Sutton J, Sanguila MB, Linkem CW, Brown RM, Siler CD. 2016. Additions to Philippine slender skinks of the Brachymeles bonitae Complex (Reptilia: Squamata: Scincidae) I: a new species from Lubang Island. Zootaxa 4132:1–14.

Jongsma GFM, Kaya AB, Yoga J-A, Mbega J-D, Mve Beh J-H, Tobi E, Emrich AM, Dixon-MacCallum GP, Davis DR, Kerby JL, Blackburn DC. 2016. Widespread presence and high prevalence of Batrachochytrium dendrobatidis in Gabon. Herpetological Review 47:227–230.

Watters JL, Flanagan RL, Davis DR, Farkas JK, Kerby JL, Labonte MJ, Penrod ML, Siler CD. 2016. Screening natural history collections for historical presence of Batrachochytrium dendrobatidis in anurans from Oklahoma, USA. Herpetological Review 47:214–220.

Gabor CR, Zabierek KC, Kim DS, Alberici da Barbiano L, Mondelli MJ, Bendik NF, Davis DR. 2016. A non-invasive water-borne assay of stress hormones in aquatic salamanders. Copeia 104:172–181.

Davis DR, Kerby JL. 2016. First detection of ranavirus in amphibians from Nebraska, USA. Herpetological Review 47:46–50.

Diesmos AC, Watters JL, Huron NA, Davis DR, Alcala AC, Crombie RI, Afuang LE, Gee-Das G, Sison RV, Sanguila MB, Penrod ML, Labonte MJ, Davey CS, Leone EA, Diesmos ML, Sy EY, Welton LJ, Brown RM, Siler CD. 2015. Amphibians of the Philippines, part I: checklist of the species. Proceedings of the California Academy of Sciences 62:457–539.

Davis DR, Watters JL, Köhler G, Whitsett C, Huron NA, Brown RM, Diesmos AC, Siler CD. 2015. Redescription of the rare Philippine false gecko Pseudogekko brevipes (Reptilia: Squamata: Gekkonidae) and description of a new species. Zootaxa 4020:357–374.

Davis DR, Gabor CR. 2015. Behavioral and physiological antipredator responses of the San Marcos Salamander, Eurycea nana. Physiology & Behavior 139:145–149.

Siler CD, Welton LJ, Davis DR, Watters JL, Davey CS, Diesmos AC, Diesmos ML, Brown RM. 2014. Taxonomic revision of the Pseudogekko compresicorpus Complex (Reptilia: Squamata: Gekkonidae), with descriptions of three new species. Herpetological Monographs 28:110–139.

Davis DR, Feller KD, Brown RM, Siler CD. 2014. Evaluating the diversity of Philippine slender skinks of the Brachymeles bonitae Complex (Reptilia: Squamata: Scincidae): redescription of B. tridactylus and descriptions of two new species. Journal of Herpetology 48:480–494.

Siler CD, Dececchi TA, Merkord CL, Davis DR, Christiani TJ, Brown RM. 2014. Cryptic diversity and population genetic structure in the rare, endemic, forest-obligate, slender geckos of the Philippines. Molecular Phylogenetics and Evolution 70:204–209.

DeSantis DL, Davis DR, Gabor CR. 2013. Chemically mediated predator avoidance in the Barton Springs Salamander (Eurycea sosorum). Herpetologica 69:291–297.

Gabor CR, Bosch J, Fries JN, Davis DR. 2013. A non-invasive stress assay using water-borne hormones in amphibians. Amphibia-Reptilia 34:151–162.

Davis DR, Epp KJ, Gabor CR. 2012. Predator generalization decreases the effect of introduced fish predators in the San Marcos salamander, Eurycea nana. Ethology 118:1191–1197.

Davis DR, Pauly GB. 2011. Morphological variation among populations of the Western Slimy Salamander on the Edwards Plateau of central Texas. Copeia 2011:102–113.