Sound production and associated behavior of tagged fin whales (Balaenoptera physalus) in the Southern California Bight

Alison Stimpert, Stacy DeRuiter, Erin Falcone, John Joseph, Annie B Douglas, David J Moretti, Ari S Friedlander, John Calambokidis, Glenn Gailey, Peter Lloyd Tyack, Jeremy A Goldbogen

Research output: Contribution to journalArticlepeer-review

Abstract

Background: For marine animals, acoustic communication is critical for many life functions, yet individual calling behavior is poorly understood for most large whale species. These topics are important for understanding whale social behavior and can also serve as a baseline for behavioral studies assessing whale response to disturbance. Using a new technique for identifying the calling individual, we measured body orientation, dive behavior, and surface social behavior in relation to call production for tagged fin whales in Southern California.
Results: Behavioral metrics associated with elevated call rates included shallow maximum dive depths (10–15 m), little body movement, negative pitch in body orientation, and moderate body roll. Calling whales were also more likely to be traveling than milling, in groups rather than solitary, and without change in group size compared to non-calling whales.
Conclusions: These are the first descriptions of body posture and depths at which fin whales are most likely to call, and some possible sound propagation and/or anatomical reasons for these results are considered. The call behavior characterizations presented here will help in predicting calling behavior from surface behavior, informing interpretation of passive acoustic data, and determining the effects of anthropogenic sound on whales in Southern California.
Original languageEnglish
Article number23
Number of pages12
JournalAnimal Biotelemetry
Volume3
DOIs
Publication statusPublished - 3 Aug 2015

Keywords

  • Fin whale
  • DTAG
  • Balaenoptera physalus
  • Acoustic behavior
  • Sound production
  • Biologging

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