Prevalence and Diversity of the Upper Respiratory Pathogen Mycoplasma agassizii in Mojave Desert Tortoises (Gopherus agassizii)

CL Weitzman, FC Sandmeier, CR Tracy - Herpetologica, 2017 - meridian.allenpress.com
Upper respiratory tract disease (URTD), caused by Mycoplasma agassizii, has been
deemed a threat to populations of Mojave Desert Tortoises, Gopherus agassizii. Previous …

Potential facilitation between a commensal and a pathogenic microbe in a wildlife disease

FC Sandmeier, KL Leonard, CL Weitzman, CR Tracy - Ecohealth, 2022 - Springer
We assessed the potential for microbial interactions influencing a well-documented host–
pathogen system. Mycoplasma agassizii is the known etiological agent of upper respiratory …

An ecoimmunological approach to disease in tortoises reveals the importance of lymphocytes

FC Sandmeier, CL Weitzman, CR Tracy - Ecosphere, 2018 - Wiley Online Library
We quantified the severity of upper respiratory tract disease (URTD) and immunological
metrics (differential white blood cell counts and bacteria‐killing ability of blood plasma) in …

Chronic disease in the Mojave desert tortoise: host physiology and recrudescence obscure patterns of pathogen transmission

FC Sandmeier, KN Maloney, CR Tracy… - Ecology and …, 2017 - Wiley Online Library
A seminatural, factorial‐design experiment was used to quantify dynamics of the pathogen
Mycoplasma agassizii and upper respiratory tract disease in the Mojave desert tortoise …

Host species, pathogens and disease associated with divergent nasal microbial communities in tortoises

CL Weitzman, FC Sandmeier… - Royal Society open …, 2018 - royalsocietypublishing.org
Diverse bacterial communities are found on every surface of macro-organisms, and they
play important roles in maintaining normal physiological functions in their hosts. While the …

The slow dynamics of mycoplasma infections in a tortoise host reveal heterogeneity pertinent to pathogen transmission and monitoring

CM Aiello, TC Esque, KE Nussear… - Epidemiology & …, 2019 - cambridge.org
The epidemiology of infectious diseases depends on many characteristics of disease
progression, as well as the consistency of these processes across hosts. Longitudinal …

Upper respiratory tract disease and associated diagnostic tests of mycoplasmosis in Alabama populations of Gopher tortoises, Gopherus polyphemus

JM Goessling, C Guyer, JC Godwin, SM Hermann… - PloS one, 2019 - journals.plos.org
Upper respiratory tract disease (URTD) in North American tortoises (Gopherus) has been
the focus of numerous laboratory and field investigations, yet the prevalence and importance …

Tools to understand seasonality in health: quantification of microbe loads and analyses of compositional ecoimmunological data reveal complex patterns in Mojave …

FC Sandmeier, KL Leonard, CR Tracy… - Canadian Journal of …, 2019 - cdnsciencepub.com
Using data from six wild Mojave Desert Tortoise (Gopherus agassizii (Cooper, 1861))
populations, we quantified seasonal differences in immune system measurements and …

Co-infection does not predict disease signs in Gopherus tortoises

CL Weitzman, R Gov, FC Sandmeier… - Royal Society …, 2017 - royalsocietypublishing.org
In disease ecology, the host immune system interacts with environmental conditions and
pathogen properties to affect the impact of disease on the host. Within the host, pathogens …

Complex immune responses and molecular reactions to pathogens and disease in a desert reptile (Gopherus agassizii)

KK Drake, CM Aiello, L Bowen, RL Lewison… - Ecology and …, 2019 - Wiley Online Library
Immune function plays an important role in an animal's defense against infectious disease.
In reptiles, immune responses may be complex and counterintuitive, and diagnostic tools …