Strain differences in hearing in song canaries.

Autor: Brown JA; Psychology 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., Brittan-Powell EF; Psychology 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., Dooling RJ; Psychology 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., Fishbein AR; Psychology 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., Ball GF; Psychology 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., Madison FN; Psychology 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.
Jazyk: angličtina
Zdroj: The Journal of the Acoustical Society of America [J Acoust Soc Am] 2019 Jul; Vol. 146 (1), pp. EL71.
DOI: 10.1121/1.5117168
Abstrakt: Belgian Waterslager song canaries, bred for hundreds of years for a low-pitched song, have also acquired an inherited high-frequency hearing loss associated with hair cell abnormalities. Here, auditory thresholds measured using auditory brainstem responses and psychophysical methods in three different strains of canaries are compared: Belgian Waterslagers, American Singers, and Borders. Border canaries have not been bred for song characteristics while American Singer canaries have been bred for song only since the 1930s. Results show that American Singer canaries also have elevated high frequency thresholds that are similar to those of the Belgian Waterslager, while Border canaries have normal thresholds. These results strengthen the case that song canary breeders in selecting for song characteristics may have inadvertently selected for hearing abnormalities.
Databáze: MEDLINE
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