On the Foraging Behavior of Beaked Whales and Other Deep Diving Odontocetes

2010 ◽  
Author(s):  
Whitlow W. Au ◽  
Marc O. Lammers
Keyword(s):  
Foraging Behavior ◽  
Deep Diving ◽  
Beaked Whales

Modeling of Habitat and Foraging Behavior of Beaked Whales in the Southern California Bight

2014 ◽  
Author(s):  
Simone Baumann-Pickering ◽  
John A. Hildebrand ◽  
Tina Yack ◽  
Jeffrey E. Moore
Keyword(s):  
Foraging Behavior ◽  
Southern California ◽  
Southern California Bight ◽  
Beaked Whales

scholarly journals Deep-diving beaked whales dive together but forage apart

2021 ◽  
Vol 288 (1942) ◽  
pp. 20201905
Author(s):  
Jesús Alcázar-Treviño ◽  
Mark Johnson ◽  
Patricia Arranz ◽  
Victoria E. Warren ◽  
Carlos J. Pérez-González ◽  
...  
Keyword(s):  
Beaked Whale ◽  
Acoustic Interference ◽  
Deep Diving ◽  
Trade Offs ◽  
Group Competition ◽  
Foraging Performance ◽  
Cooperative Foraging ◽  
Beaked Whales ◽  
Group Members ◽  
Benefits And Costs

Echolocating animals that forage in social groups can potentially benefit from eavesdropping on other group members, cooperative foraging or social defence, but may also face problems of acoustic interference and intra-group competition for prey. Here, we investigate these potential trade-offs of sociality for extreme deep-diving Blainville′s and Cuvier's beaked whales. These species perform highly synchronous group dives as a presumed predator-avoidance behaviour, but the benefits and costs of this on foraging have not been investigated. We show that group members could hear their companions for a median of at least 91% of the vocal foraging phase of their dives. This enables whales to coordinate their mean travel direction despite differing individual headings as they pursue prey on a minute-by-minute basis. While beaked whales coordinate their echolocation-based foraging periods tightly, individual click and buzz rates are both independent of the number of whales in the group. Thus, their foraging performance is not affected by intra-group competition or interference from group members, and they do not seem to capitalize directly on eavesdropping on the echoes produced by the echolocation clicks of their companions. We conclude that the close diving and vocal synchronization of beaked whale groups that quantitatively reduces predation risk has little impact on foraging performance.

Benthic foraging on seamounts: A specialized foraging behavior in a deep-diving pinniped

2011 ◽  
Vol 28 (3) ◽  
pp. E333-E344 ◽  
Author(s):  
Sara M. Maxwell ◽  
Jessica J. Frank ◽  
Greg A. Breed ◽  
Patrick W. Robinson ◽  
Samantha E. Simmons ◽  
...  
Keyword(s):  
Foraging Behavior ◽  
Deep Diving

scholarly journals Fear of Killer Whales Drives Extreme Synchrony in Deep Diving Beaked Whales

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Natacha Aguilar de Soto ◽  
Fleur Visser ◽  
Peter L. Tyack ◽  
Jesús Alcazar ◽  
Graeme Ruxton ◽  
...  
Keyword(s):  
Killer Whales ◽  
Deep Diving ◽  
Beaked Whales

scholarly journals The effect of two 12 kHz multibeam mapping surveys on the foraging behavior of Cuvier's beaked whales off of southern California

2020 ◽  
Vol 147 (6) ◽  
pp. 3849-3858 ◽  
Author(s):  
Hilary Kates Varghese ◽  
Jennifer Miksis-Olds ◽  
Nancy DiMarzio ◽  
Kim Lowell ◽  
Ernst Linder ◽  
...  
Keyword(s):  
Foraging Behavior ◽  
Southern California ◽  
Beaked Whales ◽  
Multibeam Mapping

REPETITIVE SHALLOW DIVES POSE DECOMPRESSION RISK IN DEEP-DIVING BEAKED WHALES

2007 ◽  
Vol 23 (4) ◽  
pp. 888-925 ◽  
Author(s):  
Walter M. X. Zimmer ◽  
Peter L. Tyack
Keyword(s):  
Deep Diving ◽  
Beaked Whales

Modeling of Habitat and Foraging Behavior of Beaked Whales in the Southern California Bight

2012 ◽  
Author(s):  
Simone Baumann-Pickering ◽  
John A. Hildebrand ◽  
Tina Yack
Keyword(s):  
Foraging Behavior ◽  
Southern California ◽  
Southern California Bight ◽  
Beaked Whales

Marine Bioluminescence: Measurement by a Classical Light Sensor and Related Foraging Behavior of a Deep Diving Predator

2017 ◽  
Vol 93 (5) ◽  
pp. 1312-1319 ◽  
Author(s):  
Jade Vacquié-Garcia ◽  
Jérôme Mallefet ◽  
Frédéric Bailleul ◽  
Baptiste Picard ◽  
Christophe Guinet
Keyword(s):  
Foraging Behavior ◽  
Deep Diving ◽  
Light Sensor

scholarly journals Hunting by the Stroke: How Foraging Drives Diving Behavior and Locomotion of East-Greenland Narwhals (Monodon monoceros)

2021 ◽  
Vol 7 ◽  
Author(s):  
Outi M. Tervo ◽  
Susanne Ditlevsen ◽  
Manh C. Ngô ◽  
Nynne H. Nielsen ◽  
Susanna B. Blackwell ◽  
...  
Keyword(s):  
Foraging Behavior ◽  
Activity Level ◽  
The Arctic ◽  
Foraging Strategies ◽  
Diving Behavior ◽  
Breath Holding ◽  
Excess Oxygen ◽  
East Greenland ◽  
Deep Diving ◽  
Monodon Monoceros

Deep diving air-breathing species by necessity must balance submergence time and level of exercise during breath-holding: a low activity level preserves oxygen stores and allows longer duration submergence whereas high activity levels consume oxygen quickly and shorten submergence time. In this study, we combined high-resolution multi sensor animal-borne tag data to investigate diving behavior and locomotion styles of the narwhal (Monodon monoceros) (n = 13, mean record length 91 h)–a deep diving Arctic species. Narwhals in this study dove down to >800 m but despite the deep diving abilities, one-third of the dives (33%) were shallow (>100 m) and short in duration (<5 min). Narwhals utilized energy saving measures such as prolonged gliding during descent with increasing target depth but stroked actively throughout the ascent indicating excess oxygen storages. Foraging behavior, as detected by the presence of buzzes, was a key factor influencing dive depth and spinning behavior—the rolling movement of the animal along its longitudinal axes. Narwhals in East Greenland utilized two foraging strategies, while transiting and while stationary, with different target depths and buzzing rates. The first targeted deep-dwelling, possibly solitary prey items and the latter, more schooling prey closer to the surface. The buzzing rate during stationary foraging was on average twice as high as during transiting foraging. Spinning was an integrated part of narwhal swimming behavior but the amount of spinning was correlated with foraging behavior. The odds for spinning during all dive phases were 2–3 times higher during foraging than non-foraging. Due to the spinning behavior, stroking rate might be better suited for estimating energy consumption in narwhals than ODBA (overall dynamic body acceleration). The narwhal is considered as one of the most sensitive species to climate change–the results from this study can act as a baseline essential for evaluating changes in the behavior and energy usage of narwhals caused by stressors evolving in the Arctic.

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