Guilherme Becker
Associate Professor of Biology

-
606 Mueller Lab
University Park, PA - He/Him
- czb5935@psu.edu
- 205-242-5273
Research Summary
Host-microbial interactions, landscape genetics and the ecology of global change stressors. Building models and conducting field and laboratory experiments to understand the biotic and abiotic mechanisms driving wildlife disease dynamics in both tropical and temperate systems.
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Publication Tags
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Amphibians Amphibian Brazil Chytridiomycota Batrachochytrium Dendrobatidis Virulence Immune System Microbiota Fungi Pathogen Skin Climate Infection Infections Extinction Microbiome Habitats Ecosystem Pathogens Forests Phenotype Land Cover Skin (Animal) Environmental Factors PopulationMost Recent Publications
Anthropogenic habitat modification linked to deformities in Cururu Toads from Fernando de Noronha
R. Reboucas, C. Guilherme Becker, J. Bacon, L. Toledo, Salamandra: German Journal of Herpetology
Haddadus binotatus (leaf litter frog)
R. Martins, I. Scheeffer, C. Guilherme Becker, HERPETOLOGICAL REVIEW
Selection of an anti-pathogen skin microbiome following prophylaxis treatment in an amphibian model system
Samantha A. Siomko, Sasha E. Greenspan, K. M. Barnett, Wesley J. Neely, Stanislava Chtarbanova, Douglas C. Woodhams, Taegan A. McMahon, C. Guilherme Becker, 2023, Philosophical Transactions of the Royal Society B: Biological Sciences
Host immune responses to enzootic and invasive pathogen lineages vary in magnitude, timing, and efficacy
Coby A. McDonald, C. Guilherme Becker, Carolina Lambertini, L. Felipe Toledo, Célio F.B. Haddad, Kelly R. Zamudio, 2023, Molecular Ecology on p. 2252-2270
Effects of environmental factors on the ecology and survival of a widespread, endemic Cerrado frog
Bruno F. Fiorillo, Gabriel Paganini Faggioni, Felipe Osmari Cerezer, C. Guilherme Becker, Juan C. Díaz-Ricaurte, Marcio Martins, 2023, Biotropica on p. 551-562
Habitat split as a driver of disease in amphibians
C. Guilherme Becker, Sasha E. Greenspan, Renato A. Martins, Mariana L. Lyra, Paula Prist, Jean Paul Metzger, Vinicius São Pedro, Célio F.B. Haddad, Emily H. Le Sage, Douglas C. Woodhams, Anna E. Savage, 2023, Biological Reviews
A retrospective overview of amphibian declines in Brazil's Atlantic Forest
Luís Felipe Toledo, Sergio Potsch de Carvalho-e-Silva, Ana Maria Paulino Telles de Carvalho-e-Silva, João Luiz Gasparini, Délio Baêta, Raoni Rebouças, Célio F.B. Haddad, C. Guilherme Becker, Tamilie Carvalho, 2023, Biological Conservation
Comparative host–pathogen associations of Snake Fungal Disease in sympatric species of water snakes (Nerodia)
Stephen F. Harding, C. Guilherme Becker, Jessica R. Yates, Paul Crump, Michael R.J. Forstner, Stephen J. Mullin, David Rodriguez, 2022, Scientific Reports
Low microbiome diversity in threatened amphibians from two biodiversity hotspots
Sasha E. Greenspan, Pedro Peloso, Jesualdo A. Fuentes-González, Molly Bletz, Mariana L. Lyra, Ibere F. Machado, Renato A. Martins, Daniel Medina, Diego Moura-Campos, Wesley J. Neely, Jackson Preuss, Marcelo J. Sturaro, Renata I. Vaz, Carlos A. Navas, Luís Felipe Toledo, Alexandro M. Tozetti, Miguel Vences, Douglas C. Woodhams, Célio F.B. Haddad, Jason Pienaar, C. Guilherme Becker, 2022, Animal Microbiome
Signatures of functional bacteriome structure in a tropical direct-developing amphibian species
Renato A. Martins, Sasha E. Greenspan, Daniel Medina, Shannon Buttimer, Vanessa M. Marshall, Wesley J. Neely, Samantha Siomko, Mariana L. Lyra, Célio F.B. Haddad, Vinícius São-Pedro, C. Guilherme Becker, 2022, Animal Microbiome
Most-Cited Papers
Long-term endemism of two highly divergent lineages of the amphibian-killing fungus in the Atlantic Forest of Brazil
D. Rodriguez, C. G. Becker, N. C. Pupin, C. F.B. Haddad, K. R. Zamudio, 2014, Molecular Ecology on p. 774-787
Historical amphibian declines and extinctions in Brazil linked to chytridiomycosis
Tamilie Carvalho, C. Guilherme Becker, Luís Felipe Toledo, 2017, Proceedings of the Royal Society B: Biological Sciences
Partitioning the net effect of host diversity on an emerging amphibian pathogen
C. Guilherme Becker, David Rodriguez, L. Felipe Toledo, Ana V. Longo, Carolina Lambertini, Décio T. Corrêa, Domingos S. Leite, Célio F.B. Haddad, Kelly R. Zamudio, 2014, Proceedings of the Royal Society B: Biological Sciences
Community richness of amphibian skin bacteria correlates with bioclimate at the global scale
Jordan G. Kueneman, Molly C. Bletz, Valerie J. McKenzie, C. Guilherme Becker, Maxwell B. Joseph, Juan G. Abarca, Holly Archer, Ana Lisette Arellano, Arnaud Bataille, Matthew Becker, Lisa K. Belden, Angelica Crottini, Robert Geffers, Célio F.B. Haddad, Reid N. Harris, Whitney M. Holden, Myra Hughey, Michael Jarek, Patrick J. Kearns, Jacob L. Kerby, Jos Kielgast, Atsushi Kurabayashi, Ana V. Longo, Andrew Loudon, Daniel Medina, José J. Nuñez, R. G.Bina Perl, Adrián Pinto-Tomás, Falitiana C.E. Rabemananjara, Eria A. Rebollar, Ariel Rodríguez, Louise Rollins-Smith, Robert Stevenson, Christoph C. Tebbe, Gabriel Vargas Asensio, Bruce Waldman, Jenifer B. Walke, Steven M. Whitfield, Kelly R. Zamudio, Ibrahim Zúñiga Chaves, Douglas C. Woodhams, Miguel Vences, 2019, Nature Ecology and Evolution on p. 381-389
Hybrids of amphibian chytrid show high virulence in native hosts
S. E. Greenspan, C. Lambertini, T. Carvalho, T. Y. James, L. F. Toledo, C. F.B. Haddad, C. G. Becker, 2018, Scientific Reports
Linking genetic and environmental factors in amphibian disease risk
Anna E. Savage, Carlos G. Becker, Kelly R. Zamudio, 2015, Evolutionary Applications on p. 560-572
Land cover and forest connectivity alter the interactions among host, pathogen and skin microbiome
C. G. Becker, A. V. Longo, C. F.B. Haddad, K. R. Zamudio, 2017, Proceedings of the Royal Society B: Biological Sciences
Rarity as an indicator of endangerment in neotropical frogs
Luís Felipe Toledo, C. Guilherme Becker, Célio F.B. Haddad, Kelly R. Zamudio, 2014, Biological Conservation on p. 54-62
Host-associated microbiomes are predicted by immune system complexity and climate
Douglas C. Woodhams, Molly C. Bletz, C. Guilherme Becker, Hayden A. Bender, Daniel Buitrago-Rosas, Hannah Diebboll, Roger Huynh, Patrick J. Kearns, Jordan Kueneman, Emmi Kurosawa, Brandon C. Labumbard, Casandra Lyons, Kerry McNally, Klaus Schliep, Nachiket Shankar, Amanda G. Tokash-Peters, Miguel Vences, Ross Whetstone, 2020, Genome Biology
Variation in phenotype and virulence among enzootic and panzootic amphibian chytrid lineages
C. G. Becker, S. E. Greenspan, K. E. Tracy, J. A. Dash, C. Lambertini, T. S. Jenkinson, D. S. Leite, L. F. Toledo, J. E. Longcore, T. Y. James, K. R. Zamudio, 2017, Fungal Ecology on p. 45-50
News Articles Featuring Guilherme Becker
Jun 12, 2023
Vaccine against deadly chytrid fungus primes frog microbiome for future exposure
A human's or animal’s microbiome — the collection of often beneficial microorganisms, including bacteria and fungi, that live on or within a host organism — can play an important role in the host’s overall immune response, but it is unclear how vaccines against harmful pathogens impact the microbiome.
Full Article
Mar 07, 2023
Habitat split may impact disease risk in amphibians and other vertebrates
Habitat split is a common event in the environment that occurs when different classes of natural habitats, such as forests and water, are disconnected.
Full Article