AI Article Synopsis

  • Most studies on marine mammals and anthropogenic noise have mainly looked at how noise affects hearing and behavior, neglecting other potential effects.
  • This study specifically investigated how acoustic noise impacts the heart rate of captive belugas.
  • The findings indicate that heart rate can reflect physiological stress due to noise, that cardiac responses vary with noise characteristics and exposure frequency, and that young cetaceans are more susceptible to noise-related stress than adults.

Article Abstract

To date, most research on the adverse effects of anthropogenic noise on marine mammals has focused on auditory and behavioral responses. Other responses have received little attention and are often ignored. In this study, the effect of acoustic noise on heart rate was examined in captive belugas. The data suggest that (1) heart rate can be used as a measure of physiological response (including stress) to noise in belugas and other cetaceans, (2) cardiac response is influenced by parameters of noise and adaptation to repeated exposure, and (3) cetacean calves are more vulnerable to the adverse effect of noise than adults.

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http://dx.doi.org/10.1007/978-1-4939-2981-8_80DOI Listing

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