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Using Computer Tools to Automate Age and Growth Measurements from Fish Otoliths

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Author(s)
Schulz, Corey; Mosher, Winston
Advisor(s)
Stevenson, Daniel E.; Johnson, Christopher R.; Lonzarich, David
Date
Apr 2012
Subject(s)
Fishes--Life cycles--Mathematical models; Computer algorithms; Otoliths--Research; Coho salmon--Mortality--Mathematical models; Coho salmon--Growth--Environmental aspects; Posters
Series
USGZE AS589
Abstract
Otoliths are calcium carbonate structures found in the inner ear of fish. Otoliths have been found to create daily growth rings and can therefore be used to establish fish age. In this study over 500 fish otoliths were counted by microscope and then Julian age was determined by back calculation. The expectation of this study was that differences in the physical and biological conditions of two study streams would manifest in different patterns of growth and survival for stream rearing coho salmon.
Description
Color poster with text, diagrams, images, charts, graphs, and tables.
Sponsor(s)
University of Wisconsin--Eau Claire Office of Research and Sponsored Programs.
Permanent link
http://digital.library.wisc.edu/1793/63376 
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