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The University of Utah Zebrafish Animal Resource facility identified Pseudoloma neurophilia and myxozoan pathogens. Ongoing efforts focus on improving fish health through better monitoring and cost-effective disease control protocols.

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Area of Science:

  • Aquatic animal health
  • Zebrafish research models
  • Comparative pathology

Background:

  • The University of Utah Centralized Zebrafish Animal Resource facility supports approximately 150 users across 16 research groups, housing 4000-5000 tanks.
  • The facility has undergone expansion and received praise for cleanliness and efficiency.
  • Recent initiatives aimed at improving colony health have shown perceived reductions in sick fish.

Purpose of the Study:

  • To address deficiencies in monitoring and pathogen control programs within the zebrafish facility.
  • To establish baseline data for developing effective disease reduction protocols.
  • To identify and implement cost-effective methods for improving zebrafish health.

Main Methods:

  • Sentinel tank programs were utilized to monitor for pathogens.
  • Histopathology sample sizes were assessed for adequacy in prevalence estimation.
  • Data generation focused on evaluating and implementing disease control strategies.

Main Results:

  • Sentinel tanks confirmed the presence of Pseudoloma neurophilia and a myxozoan (presumed Myxidium streisinger).
  • Histopathology sample sizes were insufficient for accurate prevalence determination.
  • Despite improvements, pathogen presence indicates ongoing challenges in disease control.

Conclusions:

  • The zebrafish facility requires enhanced pathogen monitoring and control strategies.
  • Defining baseline health and setting measurable goals are crucial for progress.
  • Data-driven evaluation is essential for implementing cost-effective health improvement protocols.