Department of Biological Sciences, University of Windsor, Windsor, ON, N9B 3P4 Canada.
J Fish Biol. 2010 Nov;77(7):1488-504. doi: 10.1111/j.1095-8649.2010.02773.x. Epub 2010 Oct 4.
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.
使用听觉诱发电位记录技术，结合音爆和同种鱼类叫声刺激，对圆鳍鱼科圆鳍鱼（Neogobius melanostomus）的听觉能力进行了量化。通过对不同大小的鱼类进行测试，评估了生长对听觉能力的影响。测试还在有背景噪声和无背景噪声的情况下进行，以评估在自然环境中掩蔽效应对听觉的潜在影响。在压力域中，圆鳍鱼可以检测到 100 至 600 Hz 的音爆，但没有明显的最佳频率，而在以质点加速度为指标进行测试时，对 100 Hz 音爆刺激最为敏感。对圆鳍鱼部分叫声的反应比纯音刺激的反应具有更低的阈值。但大小对圆鳍鱼听觉能力没有影响，这可能是由于耳石的生长与听觉上皮的生长保持同步。圆鳍鱼会被环境噪声和白噪声掩蔽，但只有在声压级相对较高时才会发生，在噪声水平为 150 dB 重参考 1 µPa 及以上时，阈值会有 5-10 dB 的偏移，但在较低的噪声水平下则不会。
