Underwater hearing in sea snakes (Hydrophiinae): first evidence of auditory evoked potential thresholds.
J Exp Biol
; 222(Pt 14)2019 07 25.
Article
em En
| MEDLINE
| ID: mdl-31345949
ABSTRACT
The viviparous sea snakes (Hydrophiinae) are a secondarily aquatic radiation of more than 60 species that possess many phenotypic adaptations to marine life. However, virtually nothing is known of the role and sensitivity of hearing in sea snakes. This study investigated the hearing sensitivity of the fully marine sea snake Hydrophis stokesii by measuring auditory evoked potential (AEP) audiograms for two individuals. AEPs were recorded from 40â
Hz (the lowest frequency tested) up to 600â
Hz, with a peak in sensitivity identified at 60â
Hz (163.5â
dB re. 1â
µPa or 123â
dB re. 1â
µm s-2). Our data suggest that sea snakes are sensitive to low-frequency sounds but have relatively low sensitivity compared with bony fishes and marine turtles. Additional studies are required to understand the role of sound in sea snake life history and further assess these species' vulnerability to anthropogenic noise.
Palavras-chave
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Potenciais Evocados Auditivos
/
Hydrophiidae
/
Audição
Tipo de estudo:
Prognostic_studies
Limite:
Animals
Idioma:
En
Revista:
J Exp Biol
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Reino Unido