Underwater hearing in sea snakes (Hydrophiinae): first evidence of auditory evoked potential thresholds.
J Exp Biol
; 222(Pt 14)2019 07 25.
Article
en 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.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Potenciales Evocados Auditivos
/
Hydrophiidae
/
Audición
Tipo de estudio:
Prognostic_studies
Límite:
Animals
Idioma:
En
Año:
2019
Tipo del documento:
Article