Navigation Links
Humpback whales catch prey with bubble-nets
Date:6/24/2011

Marine biologist David Wiley of the National Oceanic and Atmospheric Administration (NOAA) and others report in the latest issue of Behaviour (Volume 148, Nos. 5-6) how humpback whales in the Gulf of Maine catch prey with advanced water technology. Humpback whales (Megaptera novaeangliae) are large baleen whales (up to 14 m long) that feed on a small prey in dense concentrations, such as krill or herrings.

Humpbacks whales have large flukes relative to their size providing greater thrust for quick maneuvers. While other baleen whales feed by swimming rapidly forward, humpbacks are adapted for fine-scale movement to create bubble nets.

Behaviorally, humpback whales capture prey by engaging in complex feeding maneuvers that are often accompanied by the apparently directed use of air bubble clouds (the production of single or multiple bursts of seltzer-sized bubbles) to corral or herd fish. These whales create bubble nets to corral and contain planktonic prey into a small area so that they can more efficiently scoop them up in their large filter-feeding mouths. Based on surface observations, these bubble-feeding behaviors appear to vary in nature among both individuals and regions. To learn more about how these whales use bubble nets in feeding David Wiley and colleagues attached digital suction cup tags to whales that recorded depth and orientation in 3D, allowing the scientists to recreate three dimensional images of whale swimming behavior and bubble release. The data revealed the release of bubbles while swimming in upward spirals and during a novel behavior called "double-loops" not previously known (see figure). Double-loops consist of one upward spiral to corral the prey, a smack of the fluke on the ocean surface (known as a "lobtail") then a second upward lunge to capture the corralled prey. This sequence of tools and targeting of prey seems as complex as the tool use of apes in the forest. The study also reports that humpback whales work in teams of at least two individuals and are not beyond robbing the prey from the bubble nets set up by others.


'/>"/>

Contact: Els van Egmond
egmonde@brill.nl
Brill
Source:Eurekalert

Related biology news :

1. UBC researcher reveals humpback whales dining habits -- and costs
2. Researchers discover new wintering grounds for humpback whales using sound
3. Humpback whale songs spread eastward like the latest pop tune
4. High numbers of right whales seen in Gulf of Maine
5. Early whales gave birth on land, fossil find reveals
6. Older killer whales make the best mothers
7. Early whales gave birth on land
8. Mama whales teach babies where to eat
9. NOAA researchers: Blue whales re-establishing former migration patterns
10. Bycatch whaling a growing threat to coastal whales
11. New study suggests minke whales are not preventing recovery of larger whales
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/11/2017)... GARDENS, Fla. , April 11, 2017 /PRNewswire/ ... management and secure authentication solutions, today announced that ... by Intelligence Advanced Research Projects Activity (IARPA) to ... IARPA,s Thor program. "Innovation has been ... and IARPA,s Thor program will allow us to ...
(Date:4/11/2017)... April 11, 2017 NXT-ID, Inc. (NASDAQ: ... company, announces the appointment of independent Directors Mr. Robin ... its Board of Directors, furthering the company,s corporate governance and ... Gino Pereira ... look forward to their guidance and benefiting from their considerable ...
(Date:4/5/2017)... NEW YORK , April 5, 2017 ... security, is announcing that the server component of the ... is known for providing the end-to-end security architecture that ... customers. HYPR has already secured over 15 ... system makers including manufacturers of connected home product suites ...
Breaking Biology News(10 mins):
(Date:7/20/2017)... ... July 20, 2017 , ... Dr. Asher Kimchi, Founder and Chairman ... the 2017 IAC Awards at the 22nd World Congress on Heart Disease held in ... faculty to receive the Distinguished Fellowship Awards. , Dr. Asher Kimchi, together with Co-Chairmen ...
(Date:7/20/2017)... 20, 2017   KCNQ2 Cure Alliance  and ... company, today announced that they have completed the ... mutation implicated in KCNQ2 epileptic encephalopathy. They also ... second case involving an additional KCNQ2 genetic mutation. ... and Pairnomix entered into a collaboration to further ...
(Date:7/18/2017)... Vineland, New Jersey (PRWEB) , ... July 18, 2017 , ... ... manufacturer that aligns with your needs and has the capabilities to properly execute your ... web site customglassparts.com is a sourcing portal designed to showcase the ...
(Date:7/18/2017)... ... 2017 , ... Allotrope Foundation won the 2017 in Knowledge ... Allotrope Framework for commercial use. , The Bio-IT World Best Practices Awards ... critical role of information technology in modern biomedical research, but also to highlight ...
Breaking Biology Technology: