Novel acoustic technology for studying free-ranging shark social behaviour by recording individuals' interactions

Tristan L. Guttridge, Samuel H. Gruber, Jens Krause, David W. Sims

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Group behaviours are widespread among fish but comparatively little is known about the interactions between free-ranging individuals and how these might change across different spatio-temporal scales. This is largely due to the difficulty of observing wild fish groups directly underwater over long enough time periods to quantify group structure and individual associations. Here we describe the use of a novel technology, an animal-borne acoustic proximity receiver that records close-spatial associations between free-ranging fish by detection of acoustic signals emitted from transmitters on other individuals. Validation trials, held within enclosures in the natural environment, on juvenile lemon sharks Negaprion brevirostris fitted with external receivers and transmitters, showed receivers logged interactions between individuals regularly when sharks were within 4 m (∼4 body lengths) of each other, but rarely when at 10 m distance. A field trial lasting 17 days with 5 juvenile lemon sharks implanted with proximity receivers showed one receiver successfully recorded association data, demonstrating this shark associated with 9 other juvenile lemon sharks on 128 occasions. This study describes the use of acoustic underwater proximity receivers to quantify interactions among wild sharks, setting the scene for new advances in understanding the social behaviours of marine animals.

Original languageEnglish
Article numbere9324
JournalPLoS One
Volume5
Issue number2
DOIs
StatePublished - Feb 19 2010

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Negaprion brevirostris
Sharks
Social Behavior
social behavior
sharks
Acoustics
Fish
acoustics
Technology
Animals
Fishes
Underwater acoustics
Enclosures
Transceivers
group behavior
Transmitters
wild fish
fish
Free Association
body length

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Medicine(all)

Cite this

Novel acoustic technology for studying free-ranging shark social behaviour by recording individuals' interactions. / Guttridge, Tristan L.; Gruber, Samuel H.; Krause, Jens; Sims, David W.

In: PLoS One, Vol. 5, No. 2, e9324, 19.02.2010.

Research output: Contribution to journalArticle

Guttridge, Tristan L. ; Gruber, Samuel H. ; Krause, Jens ; Sims, David W. / Novel acoustic technology for studying free-ranging shark social behaviour by recording individuals' interactions. In: PLoS One. 2010 ; Vol. 5, No. 2.
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