Article (Scientific journals)
Seasonal plasticity of auditory saccular sensitivity in “sneaker” type II male plainfin midshipman fish, Porichthys notatus
Bhandiwad, Ashwin A.; Whitchurch, Elizabeth A.; Colleye, Orphal et al.
2017In Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural and Behavioral Physiology, 203 (3), p. 211-222
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Keywords :
Hearing; Particle acceleration; Teleost; Saccule; Hair cells
Abstract :
[en] Adult female and nesting (type I) male midshipman fish (Porichthys notatus) exhibit an adaptive form of auditory plasticity for the enhanced detection of social acoustic signals. Whether this adaptive plasticity also occurs in “sneaker” type II males is unknown. Here, we characterize auditory-evoked potentials recorded from hair cells in the saccule of reproductive and non-reproductive “sneaker” type II male midshipman to determine whether this sexual phenotype exhibits seasonal, reproductive state-dependent changes in auditory sensitivity and frequency response to behaviorally relevant auditory stimuli. Saccular potentials were recorded from the middle and caudal region of the saccule while sound was presented via an underwater speaker. Our results indicate saccular hair cells from reproductive type II males had thresholds based on measures of sound pressure and acceleration (re. 1 μPa and 1 ms−2, respectively) that were ~8–21 dB lower than non-reproductive type II males across a broad range of frequencies, which include the dominant higher frequencies in type I male vocalizations. This increase in type II auditory sensitivity may potentially facilitate eavesdropping by sneaker males and their assessment of vocal type I males for the selection of cuckoldry sites during the breeding season.
Disciplines :
Anatomy (cytology, histology, embryology...) & physiology
Author, co-author :
Bhandiwad, Ashwin A.;  University of Washington - UW
Whitchurch, Elizabeth A.;  University of Washington - UW
Colleye, Orphal ;  Université de Liège > Département de Biologie, Ecologie et Evolution > Morphologie fonctionnelle et évolutive
Zeddies, David G.
Sisneros, Joseph A.;  University of Washington - UW
Language :
English
Title :
Seasonal plasticity of auditory saccular sensitivity in “sneaker” type II male plainfin midshipman fish, Porichthys notatus
Publication date :
March 2017
Journal title :
Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural and Behavioral Physiology
ISSN :
0340-7594
eISSN :
1432-1351
Publisher :
Springer Verlag, New York, United States - New York
Volume :
203
Issue :
3
Pages :
211-222
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
NIH - National Institutes of Health [US-MD]
Available on ORBi :
since 10 March 2017

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