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All Outputs (23)

Subtle diurnal microbial rhythms in a large mammalian carnivore (2024)
Journal Article
Melville, D. W., Rojas, C. A., Risely, A., & Theis, K. R. (in press). Subtle diurnal microbial rhythms in a large mammalian carnivore. Journal of Mammalogy, https://doi.org/10.1093/jmammal/gyae143

Mounting evidence suggests that the cyclic interaction between host cells and the gut microbiota orchestrates metabolic and immunological homeostasis throughout the day. Yet, examples of gut microbial rhythms in natural populations are scarce, limiti... Read More about Subtle diurnal microbial rhythms in a large mammalian carnivore.

Skin Bacterial and Fungal Microbiome Responses to Diet Supplementation and Rewilding in the Critically Endangered Southern Corroboree Frog (2024)
Journal Article
Risely, A., Byrne, P., Hunter, D., Carranco, A., Hoye, B., & Silla, A. (in press). Skin Bacterial and Fungal Microbiome Responses to Diet Supplementation and Rewilding in the Critically Endangered Southern Corroboree Frog. Molecular Ecology, Article e17562. https://doi.org/10.1111/mec.17562

The composition and dynamics of the skin bacterial and fungal microbiome is thought to influence host‐pathogen defence. This microbial community is shaped by host captivity, diet, and microbial interactions between bacterial and fungal components. Ho... Read More about Skin Bacterial and Fungal Microbiome Responses to Diet Supplementation and Rewilding in the Critically Endangered Southern Corroboree Frog.

Host- plasmid network structure in wastewater is linked to antimicrobial resistance genes (2024)
Journal Article
Risely, A., Newbury, A., Stalder, T., Simmons, B. I., Top, E. M., Buckling, A., & Sanders, D. (in press). Host- plasmid network structure in wastewater is linked to antimicrobial resistance genes. Nature Communications, 15(1), 555. https://doi.org/10.1038/s41467-024-44827-w

As mobile genetic elements, plasmids are central for our understanding of antimicrobial resistance spread in microbial communities. Plasmids can have varying fitness effects on their host bacteria, which will markedly impact their role as antimicrobi... Read More about Host- plasmid network structure in wastewater is linked to antimicrobial resistance genes.

Dietary carotenoid supplementation has long‐term and community‐wide effects on the amphibian skin microbiome (2023)
Journal Article
Risely, A., Byrne, P. G., Hoye, B. J., & Silla, A. J. (in press). Dietary carotenoid supplementation has long‐term and community‐wide effects on the amphibian skin microbiome. Molecular Ecology, https://doi.org/10.1111/mec.17203

The amphibian skin microbiome plays a crucial role in host immunity and pathogen defence, yet we know little about the environmental drivers of skin microbial variation across host individuals. Inter‐individual variation in the availability of micro‐... Read More about Dietary carotenoid supplementation has long‐term and community‐wide effects on the amphibian skin microbiome.

Climate change drives loss of bacterial gut mutualists at the expense of host survival in wild meerkats (2023)
Journal Article
Risely, A., Müller‐Klein, N., Schmid, D. W., Wilhelm, K., Clutton‐Brock, T. H., Manser, M. B., & Sommer, S. (in press). Climate change drives loss of bacterial gut mutualists at the expense of host survival in wild meerkats. Global Change Biology, https://doi.org/10.1111/gcb.16877

Climate change and climate‐driven increases in infectious disease threaten wildlife populations globally. Gut microbial responses are predicted to either buffer or exacerbate the negative impacts of these twin pressures on host populations. However,... Read More about Climate change drives loss of bacterial gut mutualists at the expense of host survival in wild meerkats.

Co-infections mask pathogen-specific associations with the gut microbiota in wild voles (2023)
Journal Article
Schmid, D. W., & Risely, A. (2023). Co-infections mask pathogen-specific associations with the gut microbiota in wild voles. Journal of Animal Ecology, 92(4), 790-793. https://doi.org/10.1111/1365-2656.13906

Research Highlight: Brila, I., Lavirinienko, A., Tukalenko, E., Kallio, E. R., Mappes, T. & Watts, P. C. (2022). Idiosyncratic effects of coinfection on the association between systemic pathogens and the gut microbiota of a wild rodent, the bank vole... Read More about Co-infections mask pathogen-specific associations with the gut microbiota in wild voles.

Circadian rhythms of hosts and their gut microbiomes: Implications for animal physiology and ecology (2023)
Journal Article
Schmid, D. W., Capilla-Lasheras, P., Dominoni, D. M., Müller- Klein, N., Sommer, S., & Risely, A. (2023). Circadian rhythms of hosts and their gut microbiomes: Implications for animal physiology and ecology. Functional Ecology, 37(3), 476-487. https://doi.org/10.1111/1365-2435.14255

1. Daily light–dark cycles shape the circadian physiology and behaviour of nearly
all organisms, with variation in circadian phenotypes having cascading effects on
individual fitness, species interactions and species co-evolution.
2. Recent eviden... Read More about Circadian rhythms of hosts and their gut microbiomes: Implications for animal physiology and ecology.

Characterizing tuberculosis progression in wild meerkats (Suricata suricatta) from fecal samples and clinical signs (2022)
Journal Article
Donadio, J., Risely, A., Müller-Klein, N., Wilhelm, K., Clutton-Brock, T., Manser, M. B., & Sommer, S. (2022). Characterizing tuberculosis progression in wild meerkats (Suricata suricatta) from fecal samples and clinical signs. Journal of Wildlife Diseases, 58(2), 309-321. https://doi.org/10.7589/JWD-D-21-00063

Tuberculosis (TB) is an increasing threat to wildlife, yet tracking its spread is challenging because infections often appear to be asymptomatic, and diagnostic tools such as blood tests can be invasive and resource intensive. Our understanding of TB... Read More about Characterizing tuberculosis progression in wild meerkats (Suricata suricatta) from fecal samples and clinical signs.

Gut microbiota individuality is contingent on temporal scale and age in wild meerkats (2022)
Journal Article
Risely, A., Schmid, D. W., Müller-Klein, N., Wilhelm, K., Clutton-Brock, T. H., Manser, M. B., & Sommer, S. (2022). Gut microbiota individuality is contingent on temporal scale and age in wild meerkats. Proceedings of the Royal Society B: Biological Sciences, 289(1981), https://doi.org/10.1098/rspb.2022.0609

Inter-individual differences in gut microbiota composition are hypothesized to generate variation in host fitness—a premise for the evolution of host–gut microbe symbioses. However, recent evidence suggests that gut microbial communities are highly d... Read More about Gut microbiota individuality is contingent on temporal scale and age in wild meerkats.

Two decades of tuberculosis surveillance reveal disease spread, high levels of exposure and mortality and marked variation in disease progression in wild meerkats (2022)
Journal Article
Müller-Klein, N., Risely, A., Schmid, D. W., Manser, M., Clutton-Brock, T., & Sommer, S. (2022). Two decades of tuberculosis surveillance reveal disease spread, high levels of exposure and mortality and marked variation in disease progression in wild meerkats. Transboundary and Emerging Diseases, 69(6), 3274-3284. https://doi.org/10.1111/tbed.14679

Infections with tuberculosis (TB)-causing agents of the Mycobacterium tuberculosis complex threaten human, livestock and wildlife health globally due to the high capacity to cross trans-species boundaries. Tuberculosis is a cryptic disease characteri... Read More about Two decades of tuberculosis surveillance reveal disease spread, high levels of exposure and mortality and marked variation in disease progression in wild meerkats.

Diurnal oscillations in gut bacterial load and composition eclipse seasonal and lifetime dynamics in wild meerkats (2021)
Journal Article
Risely, A., Wilhelm, K., Clutton-Brock, T., Manser, M. B., & Sommer, S. (2021). Diurnal oscillations in gut bacterial load and composition eclipse seasonal and lifetime dynamics in wild meerkats. Nature Communications, 12, https://doi.org/10.1038/s41467-021-26298-5

Circadian rhythms in gut microbiota composition are crucial for metabolic function, yet the extent to which they govern microbial dynamics compared to seasonal and lifetime processes remains unknown. Here, we investigate gut bacterial dynamics in wil... Read More about Diurnal oscillations in gut bacterial load and composition eclipse seasonal and lifetime dynamics in wild meerkats.

Agricultural Fast Food: Bats Feeding in Banana Monocultures Are Heavier but Have Less Diverse Gut Microbiota (2021)
Journal Article
Alpízar, P., Risely, A., Tschapka, M., & Sommer, S. (2021). Agricultural Fast Food: Bats Feeding in Banana Monocultures Are Heavier but Have Less Diverse Gut Microbiota. Frontiers in Ecology and Evolution, 9, https://doi.org/10.3389/fevo.2021.746783

Habitat alteration for agriculture can negatively affect wildlife physiology and health by decreasing diet diversity and increasing exposure to agrochemicals for animals foraging in altered landscapes. Such negative effects may be mediated by the dis... Read More about Agricultural Fast Food: Bats Feeding in Banana Monocultures Are Heavier but Have Less Diverse Gut Microbiota.

Supervising the PhD: identifying common mismatches in expectations between candidate and supervisor to improve research training outcomes (2021)
Journal Article
Cardilini, A. P., Risely, A., & Richardson, M. F. (2022). Supervising the PhD: identifying common mismatches in expectations between candidate and supervisor to improve research training outcomes. Higher Education Research and Development, 41(3), 613-627. https://doi.org/10.1080/07294360.2021.1874887

The relationship between PhD candidate and supervisor influences successful candidate completion and helps maintain candidate satisfaction and mental health. We quantified potential mismatches between the PhD candidates’ and supervisors’ expectations... Read More about Supervising the PhD: identifying common mismatches in expectations between candidate and supervisor to improve research training outcomes.

Applying the core microbiome to understand host–microbe systems (2020)
Journal Article
Risely, A. (2020). Applying the core microbiome to understand host–microbe systems. Journal of Animal Ecology, 89(7), 1549-1558. https://doi.org/10.1111/1365-2656.13229

The host-associated core microbiome was originally coined to refer to common groups of microbes or genes that were likely to be particularly important for host biological function. However, the term has evolved to encompass variable definitions acros... Read More about Applying the core microbiome to understand host–microbe systems.

Serologic evidence of exposure to highly pathogenic avian influenza H5 viruses in migratory shorebirds, Australia (2019)
Journal Article

Highly pathogenic avian influenza (HPAI) H5Nx viruses of the goose/Guangdong/96 lineage continue to cause outbreaks in poultry and wild birds globally. Shorebirds, known reservoirs of avian influenza viruses, migrate from Siberia to Australia along t... Read More about Serologic evidence of exposure to highly pathogenic avian influenza H5 viruses in migratory shorebirds, Australia.

Active migration is associated with specific and consistent changes to gut microbiota in Calidris shorebirds (2017)
Journal Article
Risely, A., Waite, D. W., Ujvari, B., Hoye, B. J., & Klaassen, M. (2018). Active migration is associated with specific and consistent changes to gut microbiota in Calidris shorebirds. Journal of Animal Ecology, 87(2), 428-437. https://doi.org/10.1111/1365-2656.12784

Gut microbes are increasingly recognised for their role in regulating an animal's metabolism and immunity. However, identifying repeatable associations between host physiological processes and their gut microbiota has proved challenging, in part beca... Read More about Active migration is associated with specific and consistent changes to gut microbiota in Calidris shorebirds.