Details der Publikation - Evoked-potential audiogram variability in a group of wild Yangtze finless porpoises (Neophocaena asiaeorientalis asiaeorientalis)

Evoked-potential audiogram variability in a group of wild Yangtze finless porpoises (Neophocaena asiaeorientalis asiaeorientalis)

Abstract Hearing is considered the primary sensory modality of cetaceans and enables their vital life functions. Information on the hearing sensitivity variability within a species obtained in a biologically relevant wild context is fundamental to evaluating potential noise impact and population-relevant management. Here, non-invasive auditory evoked-potential methods were adopted to describe the audiograms (11.2–152 kHz) of a group of four wild Yangtze finless porpoises (Neophocaena asiaeorientalis asiaeorientalis) during a capture-and-release health assessment project in Poyang Lake, China. All audiograms presented a U shape, generally similar to those of other delphinids and phocoenids. The lowest auditory threshold (51–55 dB re 1 µPa) was identified at a test frequency of 76 kHz, which was higher than that observed in aquarium porpoises (54 kHz). The good hearing range (within 20 dB of the best hearing sensitivity) was from approximately 20 to 145 kHz, and the low- and high-frequency hearing cut-offs (threshold > 120 dB re l μPa) were 5.6 and 170 kHz, respectively. Compared with aquarium porpoises, wild porpoises have significantly better hearing sensitivity at 32 and 76 kHz and worse sensitivity at 54, 108 and 140 kHz. The audiograms of this group can provide a basis for better understanding the potential impact of anthropogenic noise..

Medienart:	E-Artikel

Erscheinungsjahr:	2020
Erschienen:	2020

Enthalten in:	Zur Gesamtaufnahme - volume:206
Enthalten in:	Journal of comparative physiology / A - 206(2020), 4 vom: 24. Mai, Seite 527-541

Sprache:	Englisch

Beteiligte Personen:	Wang, Zhi-Tao [VerfasserIn] Li, Jiao [VerfasserIn] Duan, Peng-Xiang [VerfasserIn] Mei, Zhi-Gang [VerfasserIn] Niu, Fu-Qiang [VerfasserIn] Akamatsu, Tomonari [VerfasserIn] Lei, Pei-Yu [VerfasserIn] Zhou, Lu [VerfasserIn] Yuan, Jing [VerfasserIn] Chen, Yu-Wei [VerfasserIn] Supin, Alexander Ya [VerfasserIn] Wang, Ding [VerfasserIn] Wang, Ke-Xiong [VerfasserIn]

Links:	Volltext [lizenzpflichtig]

BKL:	44.90$jNeurologie 44.37$jPhysiologie$XMedizin
Themen:	Audiogram Auditory evoked-potential Cetacean Wild population Yangtze finless porpoise

RVK:	RVK Klassifikation ELIB24 ELIB09

Anmerkungen:	© Springer-Verlag GmbH Germany, part of Springer Nature 2020

doi:	10.1007/s00359-020-01426-6

funding:
Förderinstitution / Projekttitel:

PPN (Katalog-ID):	OLC2118105630

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Evoked-potential audiogram variability in a group of wild Yangtze finless porpoises (Neophocaena asiaeorientalis asiaeorientalis)

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