The relationship between acoustic habitat, hearing and tonal vocalizations in the Antillean manatee (Trichechus manatus manatus, Linnaeus, 1758)

Biology Open
Mario Rivera ChavarríaArturo Camacho

Abstract

The Antillean manatee (Trichechus manatus manatus) is an endangered marine mammal that inhabits the Caribbean Sea and riverine systems in Central America. Their acoustic behavior is relevant for individual identification, mating and parental care. Manatees produce tonal sounds with highest energy in the second harmonic (usually 5 kHz), and their audiogram indicates sensitivity from 0.3 kHz to 90 kHz with lowest thresholds in the 16 to 18 kHz range. We recorded manatees in the San San River, a highly polluted riverine system in Panama, using a stereo array. Frequency transmission experiments were conducted in four subhabitats, categorized using riverine vegetation. Incidental interactions of manatees and small motorboats were examined. Acoustic transmission was linearly related to tonal vocalization characters: correlations were stronger in freshwater than in transition and marine environments. Two bands, 0.6 to 2 kHz and 3 to 8 kHz, attenuate similarly in all subhabitats, and these bands encompass F0 (tone) and peak frequency respectively of manatee tonal calls. Based on our data we conclude that frequency transmission depends mainly on river depth and bottom characteristics, also motorboat sounds mask signals from 3.5 kHz to 8...Continue Reading

References

Jan 1, 1983·Comparative Biochemistry and Physiology. A, Comparative Physiology·M L Fine, M L Lenhardt
Jun 25, 1999·The Journal of the Acoustical Society of America·E R GersteinJ E Blue
Apr 1, 2003·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·M LugliM L Fine
Jul 26, 2003·The Journal of the Acoustical Society of America·Douglas P NowacekDavid A Mann
Feb 5, 2004·The Journal of the Acoustical Society of America·Richard PhillipsDiedrich O Beusse
Oct 31, 2006·The Journal of the Acoustical Society of America·Jennifer L Miksis-Olds, James H Miller
Jun 7, 2007·The Journal of the Acoustical Society of America·Jennifer L Miksis-OldsJeffrey A Nystuen
Dec 3, 2008·The Journal of the Acoustical Society of America·Arturo Camacho, John G Harris
Jun 16, 2009·The Journal of Experimental Biology·Debborah E ColbertGordon B Bauer
Apr 13, 2012·The Journal of Experimental Biology·Joseph C GaspardDavid A Mann
Apr 6, 2013·The Journal of the Acoustical Society of America·Jessica J M MonaghanBernhard U Seeber
Oct 18, 2014·The Journal of Experimental Biology·Zachary N GhahramaniMichael L Fine
Dec 17, 2014·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Yasha MohajerMichael L Fine
Dec 24, 2014·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Debborah E Colbert-LukeDavid A Mann

❮ Previous
Next ❯

Citations

Oct 9, 2019·The Journal of the Acoustical Society of America·Fernando MerchanHector M Guzman
Mar 3, 2020·The Journal of the Acoustical Society of America·Eric A RamosDiana Reiss

❮ Previous
Next ❯

Software Mentioned

Matlab

Related Concepts

Related Feeds

Auditory Perception

Auditory perception is the ability to receive and interpret information attained by the ears. Here is the latest research on factors and underlying mechanisms that influence auditory perception.

Related Papers

Biomedical Sciences Instrumentation
R C Michelson
The Journal of the Acoustical Society of America
Zheng YanDiedrich O Beusse
The Journal of the Acoustical Society of America
Christopher NiezreckiDiedrich O Beusse
© 2021 Meta ULC. All rights reserved