Does Vessel Noise Affect Oyster Toadfish Calling Rates?
Joseph J Luczkovich1, Cecilia S Krahforst2, Harry Hoppe3
1Department of Biology, Institute for Coastal Science and Policy, East Carolina University, Greenville, NC, 27858, USA. luczkovichj@ecu.edu.
Abstract:
The question we addressed in this study is whether oyster toadfish respond to vessel disturbances by calling less when vessels with lower frequency spectra are present in a sound recording and afterward. Long-term data recorders were deployed at the Neuse (high vessel-noise site) and Pamlico (low vessel-noise site) Rivers. There were many fewer toadfish detections at the high vessel-noise site than the low-noise station. Calling rates were lower in the high-boat traffic area, suggesting that toadfish cannot call over loud vessel noise, reducing the overall calling rate, and may have to call more often when vessels are not present.
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