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:8/15/2017)... 15 2017   ivWatch LLC , a medical device company ... today announced receipt of its ISO 13485 Certification, the global standard ... Organization for Standardization (ISO®). ... Model 400 Continuous Monitoring device for the early detection of IV ... "This is an important milestone for ...
(Date:5/23/2017)...  Hunova, the first robotic gym for the rehabilitation and functional motor ... Genoa, Italy . The first 30 robots will be ... USA . The technology was developed and patented at the ... spin-off Movendo Technology thanks to a 10 million euro investment from entrepreneur ... ...
(Date:4/19/2017)... April 19, 2017 The global ... landscape is marked by the presence of several large ... held by five major players - 3M Cogent, NEC ... accounted for nearly 61% of the global military biometric ... in the global military biometrics market boast global presence, ...
Breaking Biology News(10 mins):
(Date:9/22/2017)... ... September 22, 2017 , ... HOLLOWAY AMERICA, a stainless ... premier packaging event PACK EXPO International in Las Vegas from September 25 to ... , At this year’s PACK EXPO at the Last Vegas Convention Center, HOLLOWAY ...
(Date:9/21/2017)... ... , ... Dr. Greg Leyer, Chief Scientific Officer of UAS Labs, will be ... at 12:10pm in the Probiotics Resource Center, Mandalay Bay Expo Hall. , “I ... probiotics have shown impressive data in areas outside the gut including heart health, Vitamin ...
(Date:9/21/2017)... (PRWEB) , ... September 21, 2017 , ... ... bright neon green this month, the response was swift and efficient thanks to ... RRWQG ). RRWQG is made up of more than 50 stakeholders, including officials ...
(Date:9/20/2017)... CT (PRWEB) , ... September 20, 2017 , ... Diversity ... 2nd annual multi-city Fueling the Growth pitch competition to uncover the top technology-driven, women-led ... will be an integral part of each city’s entrepreneurial events going on that week ...
Breaking Biology Technology: