scholarly journals Modeling the aggregated exposure and responses of bowhead whales Balaena mysticetus to multiple sources of anthropogenic underwater sound

2016 ◽  
Vol 30 ◽  
pp. 95-108 ◽  
Author(s):  
WT Ellison ◽  
R Racca ◽  
CW Clark ◽  
B Streever ◽  
AS Frankel ◽  
...  
Keyword(s):  
Balaena Mysticetus ◽  
Underwater Sound ◽  
Multiple Sources ◽  
Bowhead Whales

The sounds of the bowhead whale, Balaena mysticetus, during the spring migrations of 1979 and 1980

1984 ◽  
Vol 62 (7) ◽  
pp. 1436-1441 ◽  
Author(s):  
Christopher W. Clark ◽  
James H. Johnson
Keyword(s):  
Spring Migration ◽  
Bowhead Whale ◽  
Balaena Mysticetus ◽  
Underwater Sound ◽  
Complex Energy ◽  
Bowhead Whales ◽  
Sound Direction ◽  
Sound Levels ◽  
Modulated Structures ◽  
Summer Feeding

Bowhead whales, Balaena mysticetus, were recorded during their spring migration past Point Barrow, Alaska, in 1979 and 1980 using a pair of hydrophones linked to an underwater sound direction finding device. A great variety of sounds were recorded, including types that have been reported previously for bowheads during their spring migration, fall migration, and summer feeding. Most of the sounds were below 300 Hz with simple frequency-modulated structures. A variety of pulsive sounds were also recorded; these contained complex energy up to 3500 Hz. Sound levels of approximately 156 dB (re 1 μPa) were recorded for one whale 100–150 m from the hydrophones. We did not observe any particular behaviors which correlated with any of these sounds.

scholarly journals Baleen hormones: a novel tool for retrospective assessment of stress and reproduction in bowhead whales (Balaena mysticetus)

2014 ◽  
Vol 2 (1) ◽  
pp. cou030-cou030 ◽  
Author(s):  
K. E. Hunt ◽  
R. Stimmelmayr ◽  
C. George ◽  
C. Hanns ◽  
R. Suydam ◽  
...  
Keyword(s):  
Balaena Mysticetus ◽  
Bowhead Whales ◽  
Retrospective Assessment ◽  
Assessment Of Stress

Occurrence of killer whale Orcinus orca rake marks on Eastern Canada-West Greenland bowhead whales Balaena mysticetus

Polar Biology ◽  
2013 ◽  
Vol 36 (8) ◽  
pp. 1133-1146 ◽  
Author(s):  
N. R. Reinhart ◽  
S. H. Ferguson ◽  
W. R. Koski ◽  
J. W. Higdon ◽  
B. LeBlanc ◽  
...  
Keyword(s):  
Killer Whale ◽  
Orcinus Orca ◽  
Balaena Mysticetus ◽  
Eastern Canada ◽  
West Greenland ◽  
Bowhead Whales ◽  
Canada West

Hydrodynamic patterns associated with echelon formation swimming by feeding bowhead whales (Balaena mysticetus)

2012 ◽  
pp. n/a-n/a
Author(s):  
Frank E. Fish ◽  
Kimberly T. Goetz ◽  
David J. Rugh ◽  
Linda Vate Brattström
Keyword(s):  
Balaena Mysticetus ◽  
Bowhead Whales

Stable carbon and nitrogen isotope patterns in baleen from eastern Arctic bowhead whales (Balaena mysticetus)

1998 ◽  
Vol 55 (12) ◽  
pp. 2601-2607 ◽  
Author(s):  
Keith A Hobson ◽  
Don M Schell
Keyword(s):  
Nutritional Ecology ◽  
Nitrogen Isotope ◽  
Protein Catabolism ◽  
Stable Carbon ◽  
Balaena Mysticetus ◽  
Bowhead Whales ◽  
Carbon And Nitrogen ◽  
Naturally Occurring ◽  
Western Arctic ◽  
Periodic Fluctuations

Previous measurements of naturally occurring stable isotopes of carbon (delta13C) and nitrogen (delta15N) along the baleen plates of western Arctic bowhead whales (Balaena mysticetus) have provided a continuous lifetime record of the feeding or nutritional ecology of these animals that migrate annually between isotopically different foodwebs. However, virtually nothing was known about isotopic patterns of eastern Arctic bowheads. We measured delta13C and delta15N values along the baleen plates of three eastern and one western Arctic bowhead whales taken from Canadian waters in 1988 and 1996. In contrast to western Arctic animals, we found strong evidence for periodic fluctuations in delta15N but not delta13C values in the eastern Arctic specimens. We interpret these results as evidence that eastern Arctic animals do not move between foodwebs that differ in delta13C signature and suggest that these whales either (i) move annually between areas isotopically enriched in 15N but not 13C, (ii) shift diet annually by about one third of a trophic level, or (iii) undergo seasonal fasting that results in enrichment of baleen delta15N resulting from protein catabolism.

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