A. J. Belanger, I. Bobeica and D. M. Higgs (2010): The effect of stimulus
type and background noise on hearing abilities of the round goby Neogobius
melanostomus. Journal of Fish Biology, no. doi:
10.1111/j.1095-8649.2010.02773.x
Abstract: The auditory abilities of the round goby Neogobius melanostomus
were quantified using auditory evoked potential recordings, using tone
bursts and conspecific call stimuli. Fish were tested over a range of sizes
to assess effects of growth on hearing ability. Tests were also run with and
without background noise to assess the potential effects of masking in a
natural setting. Neogobius melanostomus detected tone bursts from 100 to 600
Hz with no clear best frequency in the pressure domain but were most
sensitive to 100 Hz tone stimuli when examined in terms of particle
acceleration. Responses to a portion of the N. melanostomus call occurred at
a significantly lower threshold than responses to pure tone stimulation.
There was no effect of size on N. melanostomus hearing ability, perhaps due
to growth of the otolith keeping pace with growth of the auditory
epithelium. Neogobius melanostomus were masked by both ambient noise and
white noise, but not until sound pressure levels were relatively high,
having a 5?10 dB threshold shift at noise levels of 150 dB re 1 µPa and
higher but not at lower noise levels.
URL:
http://onlinelibrary.wiley.com/doi/10.1111/j.1095-8649.2010.02773.x/abstract
For reprints please contact Dennis M Higgs (email:
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