Auditory evoked potential in stranded melon-headed whales (Peponocephala electra): With severe hearing loss and possibly caused by anthropogenic noise pollution.
Audiogram
Auditory evoked-potential
Hearing loss
Melon headed whale
Stranding
Journal
Ecotoxicology and environmental safety
ISSN: 1090-2414
Titre abrégé: Ecotoxicol Environ Saf
Pays: Netherlands
ID NLM: 7805381
Informations de publication
Date de publication:
30 Nov 2021
30 Nov 2021
Historique:
received:
13
10
2021
revised:
27
11
2021
accepted:
29
11
2021
pubmed:
4
12
2021
medline:
4
12
2021
entrez:
3
12
2021
Statut:
aheadofprint
Résumé
Highly concentrated live mass stranding events of dolphins and whales happened in the eastern coast of China between June and October 2021. The current study adopted the non-invasive auditory evoked-potential technique to investigate the hearing threshold of a stranded melon headed whale (Peponocephala electra) at a frequency range of between 9.5 and 181 kHz. It was found that, at the frequency range of from 10 to 100 kHz, hearing thresholds for the animal were between 20 and 65 dB higher than those of its phylogenetically closest species (Pygmy killer whale). The severe hearing loss in the melon headed whale was probably caused by transient intense anthropogenic sonar or chronic shipping noise exposures. The hearing loss could have been the cause for the observed temporal and spatial clustered stranding events. Therefore, there is need for noise mitigation strategies to reduce noise exposure levels for marine mammals in the coastal areas of China.
Identifiants
pubmed: 34861441
pii: S0147-6513(21)01159-3
doi: 10.1016/j.ecoenv.2021.113047
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
113047Informations de copyright
Copyright © 2021 The Authors. Published by Elsevier Inc. All rights reserved.