2024 journal article
Narrowband noise induces frequency-specific underwater temporary threshold shifts in freshwater turtles
JASA EXPRESS LETTERS, 4(8).
open access via doi.org (publisher)
UN Sustainable Development Goal Categories
14. Life Below Water
(Web of Science; OpenAlex)
Source: Web Of Science
Added: September 3, 2024
Freshwater turtles exhibit temporary threshold shifts (TTS) when exposed to broadband sound, but whether frequency-restricted narrowband noise induces TTS was unknown. Underwater TTS was investigated in two freshwater turtle species (Emydidae) following exposures to 16-octave narrowband noise (155-172 dB re 1 μPa2 s). While shifts occurred in all turtles at the noise center frequency (400 Hz), there were more instances of TTS and greater shift magnitudes at 12 octave above the center frequency, despite considerably lower received levels. These frequency-specific data provide new insight into how TTS manifests in turtles and expand empirical models to predict freshwater turtle TTS.