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Strain differences in hearing in song canaries.

Jane A Brown1, Elizabeth F Brittan-Powell1, Robert J Dooling1

  • 1Psychology Department, University of Maryland College Park, 4094 Campus Drive, College Park, Maryland 20742, USAjbrown@umd.edu, ebrittan@umd.edu, rdooling@umd.edu, afishbei@umd.edu, gball@umd.edu, fmadison@umd.edu.

The Journal of the Acoustical Society of America
|August 3, 2019
PubMed
Summary
This summary is machine-generated.

Selective breeding for song in canaries has inadvertently led to inherited hearing loss in Belgian Waterslager and American Singer strains. Border canaries, not bred for song, retain normal hearing, suggesting a genetic link between song traits and auditory function.

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Area of Science:

  • Ornithology
  • Auditory Science
  • Animal Genetics

Background:

  • Belgian Waterslager canaries, bred for specific song traits, exhibit inherited high-frequency hearing loss linked to hair cell abnormalities.
  • This hearing deficit has been observed in canaries selected for song characteristics over generations.

Purpose of the Study:

  • To compare auditory thresholds across three canary strains: Belgian Waterslagers, American Singers, and Borders.
  • To investigate the potential correlation between selective breeding for song and the prevalence of hearing abnormalities in canaries.

Main Methods:

  • Auditory thresholds were measured using auditory brainstem responses (ABRs) and psychophysical methods.
  • Three distinct canary strains were analyzed: Belgian Waterslagers, American Singers, and Borders.

Main Results:

  • American Singer canaries, bred for song since the 1930s, demonstrated elevated high-frequency hearing thresholds, similar to Belgian Waterslagers.
  • Border canaries, which have not been selectively bred for song, exhibited normal auditory thresholds.
  • These findings indicate a genetic association between song-related breeding and hearing impairment.

Conclusions:

  • Selective breeding for song characteristics in canaries may inadvertently select for genes associated with high-frequency hearing loss.
  • The study provides strong evidence linking specific song canary breeding practices to inherited auditory deficits.