Chapter title |
Identifying Variations in Baseline Behavior of Killer Whales (Orcinus orca) to Contextualize Their Responses to Anthropogenic Noise.
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Chapter number | 119 |
Book title |
The Effects of Noise on Aquatic Life II
|
Published in |
Advances in experimental medicine and biology, January 2016
|
DOI | 10.1007/978-1-4939-2981-8_119 |
Pubmed ID | |
Book ISBNs |
978-1-4939-2980-1, 978-1-4939-2981-8
|
Authors |
Samarra, Filipa I P, Miller, Patrick J O, Filipa I. P. Samarra, Patrick J. O. Miller, Samarra, Filipa I. P., Miller, Patrick J. O. |
Editors |
Arthur N. Popper, Anthony Hawkins |
Abstract |
Determining the baseline behavior of a whale requires understanding natural variations occurring due to environmental context, such as changes in prey behavior. Killer whales feeding on herring consistently encircle herring schools; however, depth of feeding differs from near the surface in winter to deeper than 10 m in spring and summer. These variations in feeding depth are probably due to the depth of the prey and the balance between the costs and benefits of bringing schools of herring to the surface. Such variation in baseline behavior may incur different energetic costs and consequently change the motivation of whales to avoid a feeding area. Here, we discuss these variations in feeding behavior in the context of exposure to noise and interpret observed responses to simulated navy sonar signals. |
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