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Retrospective study of the prevalence of Pseudoloma neurophilia between zebrafish sexes

ScholarsArchive at Oregon State University

Field Value
Title Retrospective study of the prevalence of Pseudoloma neurophilia between zebrafish sexes
Names Chow, Fidelis (creator)
Kent, Michael L. (advisor)
Date Issued 2014-05-28 (iso8601)
Note Honors Bachelor of Science (HBS)
Abstract As a major biological model for biomedical research, maintaining healthy
zebrafish (Danio rerio) is imperative for accurate and consistent lab results. This
retrospective study focuses on Pseudoloma neurophilia, a microsporidium, because it is
the most common pathogen found in laboratory zebrafish. An online database maintained
by the Zebrafish International Resource Center (ZIRC) contains data on thousands of
zebrafish submitted to their diagnostic laboratory since 2000. Zebrafish samples were
examined in order to find sex related patterns, which may point to potential factors that
contribute to increased chances of having P. neurophilia. Sex, clinical status (sick or
apparently healthy), and presence of the infection based on histopathology were analyzed
for any potential correlation between sex, P. neurophilia, with comparisons between sick
and healthy fish. Data compiling resulted in a chi-square test p-value of 0.0045,
indicating that there exists a strong correlation that male zebrafish are more often infected
with P. neurophilia. References suggest a wide variety of causes. However, a main
contributor to increased infection may be an increased level of stress in males compared
to females. This study serves as an analysis into ZIRC submissions of zebrafish infected
with P. neurophilia and determining the potential variation in infection rates and degree
of severities between zebrafish sexes.
Genre Thesis
Topic Zebrafish
Identifier http://hdl.handle.net/1957/50847

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