Navigation Links
Surprising underwater-sounds: Humpback whales also spend their winter in Antarctica
Date:9/9/2013

e eastern Weddell Sea was a unique event, Van Opzeeland developed a procedure for the automatic detection of humpback whale calls and analysed all PALAOA recordings from 2008 and 2009 for acoustic signs of life from these animals. "Along with variable, high-frequency calls from the whales, our recordings also contain stereotyped calls that sound a bit like a moan. We concentrated on the latter in our analysis," the marine biologist says. "Today, we know that, in 2008, the humpback whales were present near the observatory with the exception of the months May, September and October. In the following year, they were absent only in September. Therefore, it is highly likely that humpback whales spent the entire winter in the eastern Weddell Sea during both years," says the scientist.

A possible explanation for the absence of humpback whale calls during some months could be the Antarctic sea ice. "Near the observatory, open water areas in the sea-ice, also known as polynias, regularly form during winter. Such polynias form due to offshore winds which press the sea-ice off the continent out to sea. We suspect that humpback whales use these ice-free areas. When polynias close or change position, the whales may move with them and leave the recording radius of 100 kilometres, which our underwater microphones are monitoring. However, we do not yet have proof for this behaviour," Van Opzeeland explains.

Based on the underwater sounds, the AWI scientists cannot say what the whales are actually communicating and which animals are calling in the winter months: "Possibly, the calls are produced by young whale cows that are not yet pregnant and skip the more than 7,000 kilometres long, energetically-costly migration to Africa's coastal waters. A humpback whale-female loses up to 65 per cent of her body weight when giving birth to and suckling a calf. With this in mind, it appears energetically advantageous, from viewpoint of the young whale cows, to remain in Anta
'/>"/>

Contact: Dr. Folke Mehrtens
medien@awi.de
49-471-483-12007
Helmholtz Association
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. Study finds surprising benefits about diary cow inflammation
2. In subglacial lake, surprising life goes on
3. A surprising new function for small RNAs in evolution
4. Surprising findings on hydrogen production in green algae
5. Scientists find surprising new influence on cancer genes
6. Computer modeling reveals how surprisingly potent hepatitis C drug works
7. New look at cell membrane reveals surprising organization
8. Climate changes effects on temperate rain forests surprisingly complex
9. Surprising teaching tool in K-12 science education -- Zebrafish research
10. Despite their thick skins, alligators and crocodiles are surprisingly touchy
11. Surprising demographic shifts in endangered monkey population challenge conservation expectations
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/21/2014)... 2014  Earlier this year Donald Spector , ... one of the most prolific inventors in the world, ... from Smartphones to third party agencies. Spector envisioned this ... of the earliest known patents in this area. Now ... military, child care, elder care and hospital applications. This ...
(Date:11/18/2014)... 17, 2014   News Highlights: ... to develop The Partners Data Lake, an agile ... Data Lake will allow researcher and clinicians to ... and the lives of patients , The ... activities across the Partners system, breaking down physical ...
(Date:11/11/2014)... , Nov. 11, 2014  Forensicon, Inc., a ... is pleased to announce the promotion of Yaniv ... of Digital Forensics. In Schiff,s new role as Director, ... team of digital forensics examiners and provide leadership within ... Photo - http://photos.prnewswire.com/prnh/20141110/157719 Schiff ...
Breaking Biology News(10 mins):Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 2Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 3Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 4Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 2Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 3Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 4Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 5Yaniv Schiff Promoted to Director of Digital Forensics at Forensicon, Inc. 2
... recently completed in the gulf coast of Alaska by federal ... the production and export of high- quality food from glacial ... have serious consequences for marine food webs. , The study, ... to the marine environment," was recently published in the December ...
... do one-celled parasites move from the salivary gland of ... cells? What molecular mechanisms form the basis for this ... researchers headed by Dr. Friedrich Frischknecht, head of a ... Heidelberg University Hospital, observed the initial stage of the ...
... the ground too fast and you will crash and burn; too ... by monitoring the speed of images moving across their eyes. By ... on the retina remains constant, bees manage to control their approach. ... And how do bees adapt to landing on surfaces ranging from ...
Cached Biology News:Glacial watersheds may contribute to oceanic food web 2First adhere, then detach and glide forward 2Final moments of bee landing tactics revealed 2Final moments of bee landing tactics revealed 3
(Date:11/24/2014)...  Last week, Representatives Gus Bilirakis ... a bold bipartisan step on behalf of patients ... Original co-sponsors of the legislation include Representatives McCaul ... drug makers and innovators to "repurpose" major market ... which opens the door to the development of ...
(Date:11/24/2014)...   First published articles now ... Elsevier , a world-leading provider of scientific, technical and medical ... of the latest title in the Current Opinion journal ... . Current Opinion in ... to keep up-to-date with the expanding volume of information published ...
(Date:11/24/2014)... 23, 2014 One of the most extensive, ... and photonics is now available to high school and junior ... SPIE, the international society for optics and photonics , ... SPIE Digital Library available to high schools for ... technologies are integral to all areas of life in today’s ...
(Date:11/24/2014)... Dallas, Texas (PRWEB) November 24, 2014 ... China Adipic Dihydrazide Industry is a professional and ... It provides Adipic Dihydrazide information, like its definition, ... as industry overview. This report covers the international ... as global (such as the US, Europe, Asia, ...
Breaking Biology Technology:OPEN Act Introduced to Repurpose Drugs for Rare Diseases 2Elsevier Announces Launch of New Journal: Current Opinion in Food Science 2Elsevier Announces Launch of New Journal: Current Opinion in Food Science 3SPIE Digital Library Now Available to High Schools, Two-Year Colleges at No or Low Cost 2Adipic Dihydrazide Industry 2019 Research Forecasts on Worldwide, China Regions Now Available at ReportsnReports.com 2Adipic Dihydrazide Industry 2019 Research Forecasts on Worldwide, China Regions Now Available at ReportsnReports.com 3
... The unique properties of thin layers of graphite ... a wide range of potential electronic devices. Researchers ... application: replacing copper for interconnects in future generations of ... June 2009 issue of the IEEE journal Electron ...
... (Nasdaq: PCYC ), a biopharmaceutical company focused on ... of immune mediated disease and cancer, today announced that Glenn ... at 11:30 a.m. ET at the 8th Annual Needham Life ... , , There will be a live webcast of ...
... work social and pledge drive , , THE WOODLANDS, Texas, ... Restaurant on The Waterway in The Woodlands, ... . delighted in an after work social and pledge drive to ... , (Photo: http://www.newscom.com/cgi-bin/prnh/20090605/DA28382 ) , , More than ...
Cached Biology Technology:Graphene may have advantages over copper for IC interconnects at the nanoscale 2Graphene may have advantages over copper for IC interconnects at the nanoscale 3Pharmacyclics to Present at the 8th Annual Needham and Company Life Sciences Conference 2Americas on the Waterway Supports US Oncology Foundation 2Americas on the Waterway Supports US Oncology Foundation 3
Mouse monoclonal [7B9] to beta II Tubulin ( Abpromise for all tested applications). Antigen: Synthetic peptide, CEEEEGEDEA found at the c-terminus of beta II tubulin. Entrez GeneID: 10383 ...
...
... PI is used in conjuction with ... in the earlier stages of apoptosis (Annexin ... are in later stages of apoptosis or ... PI is detected in the orange range ...
... were cultured in RPMI 1640 with 2 mM ... growth. In order to keep the antigens ... acetone-methanol. The cells are arrayed on a ... wells surface specifically treated to enhance cellular attachment ...
Biology Products: