Skip to content

Research at St Andrews

Manatee (Trichechus manatus) vocalization usage in relation to environmental noise levels

Research output: Contribution to journalArticle

DOI

Abstract

Noise can interfere with acoustic communication by masking signals that contain biologically important information. Communication theory recognizes several ways a sender can modify its acoustic signal to compensate for noise, including increasing the source level of a signal, its repetition, its duration, shifting frequency outside that of the noise band, or shifting the timing of signal emission outside of noise periods. The extent to which animals would be expected to use these compensation mechanisms depends on the benefit of successful communication, risk of failure, and the cost of compensation. Here we study whether a coastal marine mammal, the manatee, can modify vocalizations as a function of behavioral context and ambient noise level. To investigate whether and how manatees modify their vocalizations, natural vocalization usage and structure were examined in terms of vocalization rate, duration, frequency, and source level. Vocalizations were classified into two call types, chirps and squeaks, which were analyzed independently. In conditions of elevated noise levels, call rates decreased during feeding and social behaviors, and the duration of each call type was differently influenced by the presence of calves. These results suggest that ambient noise levels do have a detectable effect on manatee communication and that manatees modify their vocalizations as a function of noise in specific behavioral contexts.

Close

Details

Original languageEnglish
Pages (from-to)1806-1815
Number of pages10
JournalJournal of the Acoustical Society of America
Volume125
Issue number3
DOIs
Publication statusPublished - Mar 2009

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. Short-term responses of sperm whales Physeter macrocephalus to the attachment of suction cup tags

    Warren, V. E., Miller, P. J. O. & Tyack, P. L., 9 Jul 2020, In : Marine Ecology Progress Series. 645, p. 219-234 16 p.

    Research output: Contribution to journalArticle

  2. Flash and grab: deep-diving southern elephant seals trigger anti-predator flashes in bioluminescent prey

    Goulet, P., Guinet, C., Campagna, C., Campagna, J., Tyack, P. L. & Johnson, M., 19 May 2020, In : Journal of Experimental Biology. 223, 10, 11 p., jeb.222810.

    Research output: Contribution to journalArticle

  3. Fin whale acoustic presence and song characteristics in seas to the southwest of Portugal

    Pereira, A., Harris, D., Tyack, P. & Matias, L., Apr 2020, In : Journal of the Acoustical Society of America. 147, 4, p. 2235-2249 15 p.

    Research output: Contribution to journalArticle

  4. Fear of killer whales drives extreme synchrony in deep diving beaked whales

    Aguilar de Soto, N., Visser, F., Tyack, P. L., Alcazar, J., Ruxton, G., Arranz, P., Madsen, P. T. & Johnson, M., 6 Feb 2020, In : Scientific Reports. 10, 9 p., 13.

    Research output: Contribution to journalArticle

  5. Dynamic biosonar adjustment strategies in deep-diving Risso's dolphins driven partly by prey evasion

    Jensen, F. H., Keller, O. A., Tyack, P. L. & Visser, F., Feb 2020, In : Journal of Experimental Biology. 223, 9 p., jeb216283.

    Research output: Contribution to journalArticle

Related by journal

  1. Animal-borne tags provide insights into the acoustic communication of southern right whales (Eubalaena australis) on the calving grounds

    Dombroski, J. R. G., Parks, S. E., Flores, P. A. C., Martín López, L. M., Shorter, K. A. & Groch, K. R., Jun 2020, In : Journal of the Acoustical Society of America. 147, 6, p. EL498-EL503

    Research output: Contribution to journalArticle

  2. Comparison of fin whale 20 Hz call detections by deep-water mobile autonomous and stationary recorders

    Fregosi, S., Harris, D. V., Matsumoto, H., Mellinger, D. K., Negretti, C., Moretti, D. J., Martin, S. W., Matsuyama, B., Dugan, P. J. & Klinck, H., 10 Feb 2020, In : Journal of the Acoustical Society of America. 147, 2, p. 961-977 17 p.

    Research output: Contribution to journalArticle

  3. Fin whale acoustic presence and song characteristics in seas to the southwest of Portugal

    Pereira, A., Harris, D., Tyack, P. & Matias, L., Apr 2020, In : Journal of the Acoustical Society of America. 147, 4, p. 2235-2249 15 p.

    Research output: Contribution to journalArticle

  4. High resolution three-dimensional beam radiation pattern of harbour porpoise clicks with implications for passive acoustic monitoring

    MacAulay, J. D. J., Malinka, C. E., Gillespie, D. M. & Madsen, P. T., 25 Jun 2020, In : Journal of the Acoustical Society of America. 147, 6, p. 4175-4188 14 p.

    Research output: Contribution to journalArticle

ID: 20036209

Top