Species identity supersedes the dilution effect concerning hantavirus prevalence at sites across Texas and México
Por:
Milholland, Matthew T., Castro-Arellano, Ivan, Arellano, Elizabeth, Nava-Garcia, Elizabeth, Rangel-Altamirano, Guadalupe, Gonzalez-Cozatl, Francisco X., Suzan, Gerardo, Schountz, Tony, Gonzalez-Padron, Shiara, Vigueras, Ana, Rubio, Andre V., Maikis, Troy J., Westrich, Bradford J., Martinez, III, Jose A., Esteve-Gassent, Maria D., Torres, Madison, Rodriguez-Ruiz, Erick R., Hahn, Dittmar, Lacher, Jr., Thomas E.
Publicada:
1 ene 2017
Resumen:
Recent models suggest a relationship exists between community diversity and pathogen prevalence, the proportion of individuals in a population that are infected by a pathogen, with most inferences tied to assemblage structure. Two contrasting outcomes of this relationship have been proposed: the "dilution effect" and the "amplification effect." Small mammal assemblage structure in disturbed habitats often differs from assemblages in sylvan environments, and hantavirus prevalence is often negatively correlated with habitats containing high species diversity via dilution effect dynamics. As species richness increases, prevalence of infection often is decreased. However, anthropogenic changes to sylvan landscapes have been shown to decrease species richness and/or increase phylogenetic similarities within assemblages. Between January 2011 and January 2016, we captured and tested 2406 individual small mammals for hantavirus antibodies at 20 sites across Texas and México and compared differences in hantavirus seroprevalence, species composition, and assemblage structure between sylvan and disturbed habitats. We found 313 small mammals positive for antibodies against hantaviruses, evincing an overall prevalence of 9.7% across all sites. In total, 40 species of small mammals were identified comprising 2 taxonomic orders (Rodentia and Eulipotyphla). By sampling both habitat types concurrently, we were able to make real-world inferences into the efficacy of dilution effect theory in terms of hantavirus ecology. Our hypothesis predicting greater species richness higher in sylvan habitats compared to disturbed areas was not supported, suggesting the characteristics of assemblage structure do not adhere to current conceptions of species richness negatively influencing prevalence via a dilution effect. © The Author(s) 2018. Published by Oxford University Press on behalf of the National Academy of Sciences. All rights reserved.
Filiaciones:
Texas State University's Department of Biology, San Marcos, TX, United States
Centro de Investigación en Biodiversidad y Conservación, Universidad Autónoma del Estado de Morelos, Cuernavaca, Mexico
Departamento de Etología y Fauna Silvestre, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Ciudad Universitaria, Ciudad de México, United States
Arthropod-borne and Infectious Diseases Laboratory, Department of Microbiology, Immunology, and Pathology College of Veterinary Medicine, Biomedical Sciences at Colorado State University, Fort Collins, CO, United States
Laboratorio Nacional de Ciencias de la Sostenibilidad, Instituto de Ecología at Universidad Nacional Autónoma de México, Ciudad Universitaria, Ciudad de México, United States
Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Nuñoa, Chile
Biologist living, Elko, NV, United States
Indiana Department of Natural Resources, Bloomington, IN, United States
Departament of Veterinary Pathobiology at Texas AandM University, College Station, TX, United States
Divison de Posgrado, Instituto Tecnólogico de Ciudad Victoria, Mexico
Department of Wildlife and Fisheries Sciences at Texas AandM University, College Station, TX, United States
Martinez, Jose A
Univ Autonoma Estado Morelos, Ctr Invest Biodiversidad & Conservac, Cuernavaca, Morelos, Mexico
Univ Nacl Autonoma Mexico, Fac Med Vet & Zootecnia, Dept Etol & Fauna Silvestre, Ciudad Univ, Mexico City, DF, Mexico
Colorado State Univ, Coll Vet Med & Biomed Sci, Dept Microbiol Immunol & Pathol, Arthropod Borne & Infect Dis Lab, Ft Collins, CO 80523 USA
Univ Nacl Autonoma Mexico, Inst Ecol, Lab Nacl Ciencias Sostenibilidad, Ciudad Univ, Mexico City, DF, Mexico
Univ Chile, Fac Ciencias, Dept Ciencias Ecol, Nunoa, Chile
Indiana Dept Nat Resources, Bloomington, IN USA
Texas A&M Univ, Dept Vet Pathobiol, College Stn, TX USA
III , Texas State Univ, Dept Biol, 601 Univ Dr, San Marcos, TX 78666 USA
Inst Tecnol Ciudad Victoria, Div Posgrad, Ciudad Victoria, Mexico
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