DTAG studies of blue whales (Balaenoptera musculus) in the Gulf of Corcovado, Chile

Alessandro Bocconcelli, Leigh Hickmott, Gustavo Chiang, Paulina Bahamonde, Gloria Howes, Rafaela Landea-Briones, Francesco Caruso, Mark Saddler, Laela Sayigh

Research output: Contribution to journalConference articlepeer-review

6 Citations (Scopus)

Abstract

This investigation set out to obtain data on the ecology, foraging and acoustic behavior of Chilean blue whales (Balaenoptera musculus) in the Gulf of Corcovado, which is an important feeding ground. We deployed 17 suction cup attached sound and orientation recording tags (DTAGs) on blue whales in 2014-16, for a total duration of 124h 08 min. Acoustic data on the tags revealed a variety of different calls. These included SEP2 (Southeast Pacific) song, previously described in this area, as well as other call types not previously described for Chilean blue whales. Downsweep calls similar to those described for other blue whale populations were observed on several tags, as were various other less stereotyped calls. We are currently working on characterizing these call types and also on using the accelerometers to identify calls from the tagged animal. Tag data will prove useful for interpretation of data collected in this area from passive acoustic monitors (PAM), both for species identification and possibly also density estimation. Overall, this work has the potential to greatly increase knowledge of the biology, ecology and behavior of blue whales in the Gulf of Corcovado.

Original languageEnglish
Article number040002
JournalProceedings of Meetings on Acoustics
Volume27
Issue number1
DOIs
Publication statusPublished - 10 Jul 2016
Externally publishedYes
Event4th International Conference on the Effects of Noise on Aquatic Life 2016 - Dublin, Ireland
Duration: 10 Jul 201616 Jul 2016

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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