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Relative Susceptibility and Effects on Performance of Rio Grande Cutthroat Trout and Rainbow Trout Challenged with Myxobolus cerebralis
Entry ID: MSU_21

Abstract: We evaluated the susceptibility of Rio Grande cutthroat trout (RGCT; Oncorhynchus clarki virginalis) to infection by Myxobolus cerebralis in a laboratory experiment. In the same experiment, rainbow trout (RBT; O. mykiss) were similarly exposed to M. cerebralis as a reference of known sensitivity to the parasite. Treatments consisting of six parasite concentrations (0, 50, 100, 250, 500, 1000 triactinomyxons per fish; TAMs/fish) were randomized within a complete block design using RGCT and RBT fry beginning at 60 d post-hatch (600 degree-d at 10oC). The laboratory experiment was terminated at 130 d post-exposure (1900 degree-d at 10oC). Diagnostic metrics included clinical signs (behavioral and black-tail), survival, myxospore counts, histology, and a swimming performance challenge.

Purpose: The objective of our research was to characterize the susceptibility of Rio Grande cutthroat trout to M. cerebralis relative to the susceptibility of rainbow trout.

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Geographic Coverage
Spatial coordinates   
  N: 38.33   S: 35.65   E: -105.03   W: -106.93

Data Set Citation
Dataset Originator/Creator: Dubey, Robert, Colleen Caldwell, and William R. Gould
Dataset Series Name: JAAH IN PRESS
Dataset Release Date: 2007-09-01
Temporal Coverage
Start Date: 2005-10-01
Stop Date: 2006-09-01
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Big Sky Institute, Montana State University Supplemental Info
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Creation and Review Dates
DIF Creation Date: 2007-08-20
Last DIF Revision Date: 2017-05-01