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Northern Michigan University

Bartonella in Small Mammals from Montana and Idaho

Abstract

dc:description.abstract

<p><em>Bartonella</em> bacteria are widespread zoonotic pathogens that infect a diverse range of small mammals, yet their prevalence and distribution remain understudied in many host species. In this study, <em>Bartonella</em> infection was assessed across multiple small mammal species, revealing an overall prevalence of approximately 37% based on droplet digital PCR (ddPCR) screening. Following ddPCR screening, individuals that yielded positive results were selected for further analysis including genetic sequencing of the RNA polymerase b-subunit (<em>rpoB</em>) gene. While 116 individuals of 313 tested positive, only 63 samples were successfully sequenced, likely due to low infection loads. BLAST analysis suggested the presence of several <em>Bartonella</em> species among the infected samples, with <em>B. grahamii</em> and <em>B. washoensis</em> being the most frequently detected. Phylogenetic analyses using both Bayesian inference (MrBayes) and maximum likelihood (IQ-TREE) approaches demonstrated strong host-associated clustering of known <em>Bartonella </em>species. These findings provide important insights into <em>Bartonella</em> prevalence, distribution, diversity, and host specificity.</p>

Degree

thesis:*
Name thesis:degree_name
Master of Science
Level thesis:degree_level
Thesis
Discipline thesis:degree_discipline
Biology
Year dc:date.available
2025

Author and committee

dc:creator, dc:contributor.*
Author dc:creator
  • Greenman, Emily
Contributors dc:contributor
  • Josh Sharp

Identifiers

dc:identifier.*
Repository record dc:identifier
https://commons.nmu.edu/theses/872
OAI identifier oai:identifier
oai:commons.nmu.edu:theses-1945

Chain of custody

source
Harvested from
Northern Michigan University
Base URL
commons.nmu.edu/do/oai/
Last updated
2026-07-24
Source record
OAI-PMH GetRecord
related terms
citation

Greenman, Emily. Bartonella in Small Mammals from Montana and Idaho. Thesis thesis, 2025. https://commons.nmu.edu/theses/872