Skip to content

Research at St Andrews

Foraging Blainville's beaked whales (Mesoplodon densirostris) produce distinct click types matched to different phases of echolocation

Research output: Contribution to journalArticle

DOI

Author(s)

M. Johnson, P. T. Madsen, W. M. X. Zimmer, N. Aguilar de Soto, P. L. Tyack

School/Research organisations

Abstract

Blainville's beaked whales (Mesoplodon densirostris Blainville) echolocate for prey during deep foraging dives. Here we use acoustic tags to demonstrate that these whales, in contrast to other toothed whales studied, produce two distinct types of click sounds during different phases in biosonar-based foraging. Search clicks are emitted during foraging dives with inter-click intervals typically between 0.2 and 0.4 s. They have the distinctive form of an FM upsweep (modulation rate of about 110 kHz ms(-1)) with a-10 dB bandwidth from 26 to 51 kHz and a pulse length of 270 mu s, somewhat similar to chirp signals in bats and Cuvier's beaked whales (Ziphius cavirostris Cuvier), but quite different from clicks of other toothed whales studied. In comparison, the buzz clicks, produced in short bursts during the final stage of prey capture, are short (105 mu s) transients with no FM structure and a -10 dB bandwidth from 25 to 80 kHz or higher. Buzz clicks have properties similar to clicks reported from large delphinids and hold the potential for higher temporal resolution than the FM clicks. It is suggested that the two click types are adapted to the separate problems of target detection and classification versus capture of low target strength prey in a cluttered acoustic environment.

Close

Details

Original languageEnglish
Pages (from-to)5038-5050
Number of pages13
JournalJournal of Experimental Biology
Volume209
Issue number24
DOIs
Publication statusPublished - 15 Dec 2006

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

View graph of relations

Related by author

  1. Measuring acoustic habitats

    Merchant, N. D., Fristrup, K. M., Johnson, M. P., Tyack, P. L., Witt, M. J., Blondel, P. & Parks, S. E., Mar 2015, In : Methods in Ecology and Evolution. 6, 3, p. 257-265

    Research output: Contribution to journalArticle

  2. Beaked whales

    Madsen, P., Aguilar de Soto, N., Tyack, P. L. & Johnson, M., 18 Aug 2014, In : Current Biology. 24, 16, p. R728-R730 3 p.

    Research output: Contribution to journalArticle

  3. Effective beam pattern of the Blainville's beaked whale (Mesoplodon densirostris) and implications for passive acoustic monitoring

    Shaffer, J. W., Moretti, D., Jarvis, S., Tyack, P. & Johnson, M., Mar 2013, In : Journal of the Acoustical Society of America. 133, 3, p. 1770-1784 15 p.

    Research output: Contribution to journalArticle

Related by journal

  1. Behavioral responses of individual blue whales (Balaenoptera musculus) to mid-frequency military sonar

    Southall, B., DeRuiter, S., Friedlaender, A., Stimpert, A., Goldbogen, J., Hazen, E., Casey, C., Fregosi, S., Cade, D., Allen, A., Harris, C. M., Schorr, G., Moretti, D., Guan, S. & Calambokidis, J., Mar 2019, In : Journal of Experimental Biology. 222, 15 p., jeb190637.

    Research output: Contribution to journalArticle

  2. Dolphin echolocation behaviour during active long-range target approaches

    Ladegaard, M., Mulsow, J., Houser, D. S., Jensen, F. H., Johnson, M., Madsen, P. T. & Finneran, J. J., 25 Jan 2019, In : Journal of Experimental Biology. 222, 12 p., jeb189217.

    Research output: Contribution to journalArticle

  3. No experimental evidence of stress-induced hyperthermia in zebrafish (Danio rerio)

    Jones, N. A. R., Mendo, T., Broell, F. & Webster, M. M., 24 Jan 2019, In : Journal of Experimental Biology. 222, 2, 8 p., jeb.192971.

    Research output: Contribution to journalArticle

  4. Dive heart rate in harbour porpoises is influenced by exercise and expectations

    McDonald, B., Johnson, M. & Madsen, P., 9 Jan 2018, In : Journal of Experimental Biology. 221, 1, jeb168740.

    Research output: Contribution to journalArticle

  5. High field metabolic rates of wild harbour porpoises

    Rojano-Doñate, L., McDonald, B. I., Wisniewska, D. M., Johnson, M., Teilmann, J., Wahlberg, M., Højer-Kristensen, J. & Madsen, P. T., 6 Dec 2018, In : Journal of Experimental Biology. 221, 23, 12 p., jeb185827.

    Research output: Contribution to journalArticle

ID: 20036163