Spatial and temporal variability of the acoustic repertoire of Antarctic minke whales (Balaenoptera bonaerensis) in the Weddell Sea

Since the attribution of the bio-duck call to Antarctic minke whales (AMW Balaenoptera bonaerensis ), different studies have retrospectively identified several bio-duck call types at various sites throughout the Southern Hemisphere. The function of their vocal behavior however, remains largely unkno...

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Bibliographic Details
Published in:Scientific reports 2023-07, Vol.13 (1), p.11861-11861, Article 11861
Main Authors: Filún, Diego, van Opzeeland, Ilse
Format: Article
Language:English
Subjects:
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631/158/1745
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Acoustic tracking
Acoustics
Aquatic birds
Aquatic mammals
Archives & records
Balaenoptera bonaerensis
Behavior
Cetacea
Data collection
Datasets
Humanities and Social Sciences
Hypotheses
Ice shelves
multidisciplinary
Observatories
Science
Science (multidisciplinary)
Seasonal variations
Sonar
Vocalization behavior
Waterfowl
Whales
Whales & whaling
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Summary:Since the attribution of the bio-duck call to Antarctic minke whales (AMW Balaenoptera bonaerensis ), different studies have retrospectively identified several bio-duck call types at various sites throughout the Southern Hemisphere. The function of their vocal behavior however, remains largely unknown. Further insights into their repertoire usage may help to reveal the function of their calls. Here, we use passive acoustic monitoring (PAM) data collected across six locations throughout the Weddell Sea (WS) in 2013 and from PALAOA Station (Ekström Ice Shelf, eastern WS) in 2015, 2016 and 2017. In 2013, we detected 11 bio-duck call types throughout the WS between May and December, with additional acoustic activity in February on the western recorder AMW calls fell into four general call clusters. Seasonal patterns of calls showed variability between locations and years. Furthermore, this is the first study to show that similar to other baleen whale species, AMWs also produce songs .
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-023-38793-4