Auditory discrimination of natural and high-pass filtered bark vocalizations in a California sea lion (Zalophus californianus)
Mulsow, J.; Finneran, J.J. (2016). Auditory discrimination of natural and high-pass filtered bark vocalizations in a California sea lion (Zalophus californianus), in: Popper, A.N. et al. The effects of noise on aquatic life II. Advances in Experimental Medicine and Biology, 875: pp. 737-742. http://dx.doi.org/10.1007/978-1-4939-2981-8_89 In: Popper, A.N.; Hawkins, A. (Ed.) (2016). The effects of noise on aquatic life II. Advances in Experimental Medicine and Biology, 875. Springer Science+Business Media, Inc: New York. ISBN 978-1-4939-2980-1. xxx, 1292 pp., more In: Advances in Experimental Medicine and Biology. Springer: Berlin. ISSN 0065-2598; e-ISSN 2214-8019, more |  |
| Keywords | Hearing
Pinnipedia [WoRMS]
Marine/Coastal | | Author keywords | |
| Abstract | A California sea lion performed a psychophysical auditory discrimination task with a set of six stimuli: three barks recorded from conspecific males and high-pass filtered versions of the barks that removed the majority of energy at fundamental frequencies. Discrimination performance and subject reaction times (RTs) suggested that the vocalizations were all perceived as fairly dissimilar. This preliminary study hints that low-frequency components are a salient part of the California sea lion bark despite elevation of this species’ aerial hearing thresholds and the potential for elevated environmental noise levels at frequencies below 1 kHz. |
|
