Ivan Castro-Arellano

Associate Professor




Dr. Ivan Castro-Arellano is an Associate Professor in the Biology Department at Texas State University. I earned my Ph.D. (2005) and M.S. (2000) in Wildlife and Fisheries Sciences from Texas A&M University and my B.S. (1997) from the Universidad Nacional Autonoma de Mexico. My research focuses on the effects on anthropogenic disturbance on natural systems, with special emphasis on pathogen-host interactions, invasive and endangered mammal species. I consider myself an ecologist and mammologist with conservation-oriented focus. My research has covered ecology questions of several pathogens like hantaviruses, Borrelia (and other tick-borne pathogens), Leptospira and Trypanosoma. I have authored 48 peer-reviewed journal articles, 35 species monographs in a reference book on Mexican mammals, and 139 IUCN Red List species conservation assessments ( I have been part of 61 presentations at national and international academic conferences, with 2 of these as an invited keynote speaker at international conferences. I have led or been involved in research grants for a total of $2.4 MIL, including a NIH R21 award to support work on a tick-borne disease in Texas. In 2012 I was awarded a Kika de la Garza Science Fellowship from the USDA. I have been a member of the Wildlife Diseases Working Group from the Wildlife Society for the last 4 years and I am a member of the IUCN Small Mammal Specialists group. I am currently the director for the Wildlife Biology BS major at the Biology Department from Texas State University

Preferred Pronouns


Personal Academic Website

Research/Topics of Interest

Agent-based models
Between-host modeling
Climate/environmental drivers
Geospatial models
Network models
Outbreak science
Science communication
Statistical models
Ecological drivers of zoonotic disease outbreaks
Zoonotic diseases
Anthropogenic disturbance natural systems
Ecology of wildlife reservoirs
Metacommunity dynamics
Mammalian pathogen reservoirs

Pathogens/Diseases of Main Interest/Expertise

Neglected tropical diseases
Vector-borne diseases

Countries of Work/Collaboration

United States
Puerto Rico



Martínez-Borrego D, Arellano E, González-Cózatl FX, Castro-Arellano I, León-Paniagua L, Rogers DS. (2022). species complex. Journal of mammalogy, 103(1)

Salgado R, Barja I, Hernández MDC, Lucero B, Castro-Arellano I, Bonacic C, Rubio AV. (2022). Activity patterns and interactions of rodents in an assemblage composed by native species and the introduced black rat: implications for pathogen transmission. BMC zoology, 7(1)

Krishnavajhala A, Armstrong BA, Kneubehl AR, Gunter SM, Piccione J, Kim HJ, Ramirez R, Castro-Arellano I, Roachell W, Teel PD, Lopez JE. (2021). Diversity and distribution of the tick-borne relapsing fever spirochete Borrelia turicatae. PLoS neglected tropical diseases, 15(11)

Modarelli JJ, Westrich BJ, Milholland M, Tietjen M, Castro-Arellano I, Medina RF, Esteve-Gasent MD. (2020). Prevalence of protozoan parasites in small and medium mammals in Texas, USA. International journal for parasitology. Parasites and wildlife, (11)

Córdoba-Aguilar A, Ibarra-Cerdeña CN, Castro-Arellano I, Suzan G. (2021). Tackling zoonoses in a crowded world: Lessons to be learned from the COVID-19 pandemic. Acta tropica, (214)

Briskin EA, Casanovas-Massana A, Ryff KR, Morales-Estrada S, Hamond C, Perez-Rodriguez NM, Benavidez KM, Weinberger DM, Castro-Arellano I, Wunder EA, Sharp TM, Rivera-Garcia B, Ko AI. (2019). Seroprevalence, Risk Factors, and Rodent Reservoirs of Leptospirosis in an Urban Community of Puerto Rico, 2015. The Journal of infectious diseases, 220(9)

Curtis JL, Milholland MT, Schountz T, Castro-Arellano I, Mali I. (2019). Detection of New World Hantavirus Antibodies in Rodents of Eastern New Mexico, USA. Journal of wildlife diseases, 55(4)

Milholland MT, Castro-Arellano I, Garcia-Peña GE, Mills JN. (2019). The Ecology and Phylogeny of Hosts Drive the Enzootic Infection Cycles of Hantaviruses. Viruses, 11(7)

Benavidez KM, Guerra T, Torres M, Rodriguez D, Veech JA, Hahn D, Miller RJ, Soltero FV, Ramírez AEP, Perez de León A, Castro-Arellano I. (2019). The prevalence of Leptospira among invasive small mammals on Puerto Rican cattle farms. PLoS neglected tropical diseases, 13(5)

Milholland MT, Castro-Arellano I, Suzán G, Garcia-Peña GE, Lee TE Jr., Rohde RE, Alonso Aguirre A, Mills JN. (2018). Global Diversity and Distribution of Hantaviruses and Their Hosts. EcoHealth, 15(1)

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