Underwater components of humpback whale bubble-net feeding behaviour David Wiley 1,6) , Colin Ware 2) , Alessandro Bocconcelli 3) , Danielle Cholewiak 1) , Ari Friedlaender 4) , Michael Thompson 1) & Mason Weinrich 5) ( 1 Stellwagen Bank National Marine Sanctuary, NOAA National Ocean Service, 175 Edward Foster Road, Scituate, MA 02066, USA; 2 Centre for Coastal and Ocean Mapping, University of New Hampshire, 24 Colovos Road, Durham, NH 03824, USA; 3 Woods Hole Oceanographic Institution, 266 Woods Hole Road, Woods Hole, MA 02543, USA; 4 Duke University Marine Laboratory, 135 Pivers Island Road, Beaufort, NC 28516, USA; 5 Whale Centre of New England, 24 Harbour Loop Road, Gloucester, MA 01931, USA) (Accepted: 24 March 2011) Summary Humpback whales ( Megaptera novaeangliae ) employ a unique and complex foraging be- haviour — bubble-netting — that involves expelling air underwater to form a vertical cylinder-ring of bubbles around prey. We used digital suction cup tags (DTAGs) that con- currently measure pitch, roll, heading, depth and sound (96 kHz sampling rate), to provide the first depiction of the underwater behaviours in which humpback whales engage during bubble-net feeding. Body mechanics and swim paths were analysed using custom visual- ization
Behaviour – Brill
Published: Jan 1, 2011
Keywords: SPIRAL-LOOP; DOUBLE-LOOP; KINEMATIC; BUBBLE NET; HUMPBACK WHALE; FEEDING
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