Underwater acrobatics by the world's largest predator: 360 rolling manoeuvres by lunge-feeding blue whales
Open Access
- 23 February 2013
- journal article
- Published by The Royal Society in Biology Letters
- Vol. 9 (1), 20120986
- https://doi.org/10.1098/rsbl.2012.0986
Abstract
The extreme body size of blue whales requires a high energy intake and therefore demands efficient foraging strategies. As an obligate lunge feeder on aggregations of small zooplankton, blue whales engulf a large volume of prey-laden water in a single, rapid gulp. The efficiency of this feeding mechanism is strongly dependent on the amount of prey that can be captured during each lunge, yet food resources tend to be patchily distributed in both space and time. Here, we measured the three-dimensional kinematics and foraging behaviour of blue whales feeding on krill, using suction-cup attached multi-sensor tags. Our analyses revealed 360° rolling lunge-feeding manoeuvres that reorient the body and position the lower jaws so that a krill patch can be engulfed with the whale's body inverted. We also recorded these rolling behaviours when whales were in a searching mode in between lunges, suggesting that this behaviour also enables the whale to visually process the prey field and maximize foraging efficiency by surveying for the densest prey aggregations. These results reveal the complex manoeuvrability that is required for large rorqual whales to exploit prey patches and highlight the need to fully understand the three-dimensional interactions between predator and prey in the natural environment.This publication has 20 references indexed in Scilit:
- Keeping momentum with a mouthful of water: behavior and kinematics of humpback whale lunge feedingJournal of Experimental Biology, 2012
- Discovery of a sensory organ that coordinates lunge feeding in rorqual whalesNature, 2012
- Scaling of lunge‐feeding performance in rorqual whales: mass‐specific energy expenditure increases with body size and progressively limits diving capacityFunctional Ecology, 2011
- Mechanics, hydrodynamics and energetics of blue whale lunge feeding: efficiency dependence on krill densityJournal of Experimental Biology, 2011
- Shallow and deep lunge feeding of humpback whales in fjords of the West Antarctic PeninsulaMarine Mammal Science, 2010
- Skull and buccal cavity allometry increase mass-specific engulfment capacity in fin whalesProceedings. Biological sciences, 2009
- Insights into the Underwater Diving, Feeding, and Calling Behavior of Blue Whales from a Suction-Cup-Attached Video-Imaging Tag (Crittercam)Marine Technology Society Journal, 2007
- Morphological specializations of baleen whales associated with hydrodynamic performance and ecological nicheJournal of Morphology, 2006
- A digital acoustic recording tag for measuring the response of wild marine mammals to soundIEEE Journal of Oceanic Engineering, 2003
- Description of Escape Responses of Krill (Crustacea: Euphausiacea), with Particular Reference to Swarming Behavior and the Size and Proximity of the PredatorJournal of Crustacean Biology, 1987