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

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 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.

scholarly journals Deep-diving by narwhals Monodon monoceros: differences in foraging behavior between wintering areas?

2003 ◽  
Vol 261 ◽  
pp. 269-281 ◽  
Author(s):  
KL Laidre ◽  
MP Heide-Jørgensen ◽  
R Dietz ◽  
RC Hobbs ◽  
OA Jørgensen
Keyword(s):  
Foraging Behavior ◽  
Deep Diving ◽  
Monodon Monoceros ◽  
Wintering Areas

Foraging behavior of an estuarine predator, the blue crab Callinectes sapidus in a patchy environment

Ecography ◽  
2000 ◽  
Vol 23 (1) ◽  
pp. 21-31 ◽  
Author(s):  
Mary E. Clark ◽  
Thomas G. Wolcott ◽  
Donna L. Wolcott ◽  
Anson H. Hines
Keyword(s):  
Foraging Behavior ◽  
Blue Crab ◽  
Callinectes Sapidus ◽  
Patchy Environment

Human foraging behavior in external and internal search tasks

2010 ◽  
Author(s):  
Andreas Wilke ◽  
Benjamin Scheibehenne ◽  
Rui Mata ◽  
Peter M. Todd ◽  
H. Clark Barrett
Keyword(s):  
Foraging Behavior ◽  
Search Tasks ◽  
Human Foraging
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