Minimal similarity in songs suggests limited exchange between humpback whales (Megaptera novaeangliae) in the southern Indian Ocean

Murray, Anita, Cerchio, Salvatore, McCauley, Robert, Jenner, Curt S., Razafindrakoto, Yvette, Coughran, Douglas, Mckay, Shannon and Rosenbaum, Howard (2012) Minimal similarity in songs suggests limited exchange between humpback whales (Megaptera novaeangliae) in the southern Indian Ocean. Marine Mammal Science, 28 1: E41-E57. doi:10.1111/j.1748-7692.2011.00484.x


Author Murray, Anita
Cerchio, Salvatore
McCauley, Robert
Jenner, Curt S.
Razafindrakoto, Yvette
Coughran, Douglas
Mckay, Shannon
Rosenbaum, Howard
Title Minimal similarity in songs suggests limited exchange between humpback whales (Megaptera novaeangliae) in the southern Indian Ocean
Formatted title
Minimal similarity in songs suggests limited exchange between humpback whales (Megaptera novaeangliae) in the southern Indian Ocean
Journal name Marine Mammal Science   Check publisher's open access policy
ISSN 0824-0469
1748-7692
Publication date 2012-01
Year available 2011
Sub-type Article (original research)
DOI 10.1111/j.1748-7692.2011.00484.x
Volume 28
Issue 1
Start page E41
End page E57
Total pages 17
Place of publication Hoboken, NJ, United States
Publisher Wiley-Blackwell Publishing
Collection year 2013
Language eng
Abstract Comparing humpback whale song from different breeding assemblages can reveal similarities in song due to acoustically interacting males, and therefore indirectly test whether males from different breeding sites are mixing. Northern Hemisphere song comparisons illustrated that whales within ocean basins share similar songs and are subpopulations within a larger population, whereas whales in different ocean basins are isolated populations and therefore do not share songs. During the 2006 breeding season, recordings were collected in Madagascar and Western Australia, and were compared visually plus aurally. Both regions shared one theme, whereas each region had four and six private themes, respectively. This study had a substantially low number of shared themes. The co-occurrence of one theme was interpreted as an indication of limited exchange between these breeding assemblages, and we speculate that limited song similarity is due to inter-oceanic interactions. Male(s) from an Indian Ocean breeding group could be exposed to novel song when they geographically overlap, and acoustically interact, with males from a different ocean basin. Novel song could induce rapid temporal changes as new song content is incorporated, thereby minimizing song similarities between that breeding group and other Indian Ocean breeding groups that were not exposed to the novel song.
Keyword Humpback whale
Megaptera novaeangliae
Song
Indian Ocean
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article first published online: 15 JUN 2011

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
School of Veterinary Science Publications
 
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