Work

Narrowband noise induces frequency-specific underwater temporary threshold shifts in freshwater turtles

Year: 2024

Type: article

Abstract: 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.

Source: JASA Express Letters

DOI: 10.1121/10.0028321

Authors: Andria K. Salas, Michele A. Sims, Craig A. Harms, Wendy E. D. Piniak, T. Aran Mooney

Institutions: Woods Hole Oceanographic Institution, North Carolina State University, Center for Marine Sciences and Technology, National Oceanic and Atmospheric Administration

Language: English

Topic: Marine animal studies overview

Subfield: Ecology

Field: Environmental Science

Domain: Physical Sciences

Open Access status: diamond

Funders: U.S. Navy, National Marine Fisheries Service

Awards: G3396343930, G8630605995