Navigation Links
Ecologists home in on how sperm whales find their prey

Ecologists have at last got a view of sperm whales' behaviour during their long, deep dives, thanks to the use of recently developed electronic "dtags". According to new research published in the British Ecological Society's Journal of Animal Ecology, sperm whales ?like bats ?use echolocation consistently to track down their prey at depth.

Working in the Atlantic, the Gulf of Mexico and the Ligurian Sea, scientists from Woods Hole Oceanographic Institution and the University of St Andrews attached acoustic recording tags to the dorsal surface of sperm whales with suction cups. The whales were then tracked acoustically with a towed hydrophone array.

The researchers used the tags to record the sounds that sperm whales produce while foraging. As sperm whales descended from the surface, they emitted a regular series of "clicks". When the whales reach the bottom of their dive, these clicks are emitted more often, eventually merging together to form "buzzes" of sound. This pattern reflects the whales homing in on cephalopods such as squid, with the buzzes reflecting the animals' final approach when detailed information on the squid's position and movement are required, the researchers believe.

Dr Stephanie Watwood and colleagues found that sperm whales produced buzzes on every deep dive they made, in all three locations, suggesting that they are highly successful at locating prey in the dark ocean depths.

The sperm whale is the world's largest deep-diving toothed whale, feeding mainly on squid, but until now little has been known about the timing of prey detection and capture during dives.

"Due to the difficulty of observing sperm whales during their long, deep dives, little has been known about their subsurface behaviour, giving rise to an array of speculations on how sperm whales find prey, including luring, touch, passive listening, echolocation and vision. Recording vocalisations of diving sperm whales presents a non-invasive o
'"/>

Source:Blackwell Publishing Ltd.


Page: 1 2

Related biology news :

1. Environmental chemical cocktail may sabotage sperm
2. Human embryonic stem cells have the potential to develop into eggs and sperm in the laboratory
3. UK sperm donor crisis
4. Protein translation in sperm
5. How sperm crack the whip
6. Chromosomal abnormalities in sperm higher after vasectomy reversal
7. Study links high levels of nitric oxide to infertility and sperm DNA damage
8. Even when faint, ovary scent draws sperm cells
9. Single molecular mark seen as pivotal for genome compaction in spores and sperm
10. Early-stage sperm cells created from human bone marrow
11. Tracking sperm whales and jumbo squid
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Ecologists home how sperm whales find their prey

(Date:7/9/2014)... New Rochelle, NY, July 9, 2014Biofuels derived from the ... alternative to fossil fuels. To achieve this goal, optimization ... as in open pond systems, is needed. Sapphire Energy ... contamination of open pond algae cultivation systems, described in ... Ann Liebert, Inc., publishers. The article is available on ...
(Date:7/9/2014)... a University of Guelph scientist that involved fitting ... exposure to a neonicotinoid pesticide hampers bees, ability ... Nigel Raine, a professor in Guelph,s School of ... London was published July 9 in the British ... The study shows how long-term pesticide exposure affects ...
(Date:7/9/2014)... A new study shows that some shark species may be ... that may come with rising temperatures. , The Arctic today ... but it wasn,t always like that. Roughly 53 to 38 ... epoch, the Arctic was more similar to a huge temperate ... life, including ancestors of tapirs, hippo-like creatures, crocodiles and giant ...
Breaking Biology News(10 mins):Controlling contamination in open algae ponds for biofuels 2Bee foraging chronically impaired by pesticide exposure: Study 2Shark teeth analysis provides detailed new look at Arctic climate change 2Shark teeth analysis provides detailed new look at Arctic climate change 3
... researchers have identified the job of one of the ... puzzled scientists because it is present in nearly every ... and yet, in laboratory experiments, its function has remained ... enigmatic enzyme known as DinB DNA polymerase is specialized ...
... have identified a handful of microRNAs (miRNAs) that appear ... platelets ?blood cells critical to the body's ability to ... of these same miRNAs, when acting abnormally, may contribute ... that a specific set of miRNA genes are turned ...
... and slow developing gills appear to be keys to ... fish whose adults thrive in icy waters because of ... are important, researchers at the University of Illinois atUrbana-Champaign ... species of notothenioids that inhabit the Ross Sea at ...
Cached Biology News:Common enzyme is a key player in DNA repair 2Common enzyme is a key player in DNA repair 3MiRNA fingerprint identified in platelet formation 2Thin tough skin, slow-growing gills protect larval Antarctic fish 2Thin tough skin, slow-growing gills protect larval Antarctic fish 3
(Date:1/15/2014)... England , January 15, 2014 A ... win races on the Formula 1 track could help to ... McLaren Applied Technologies (MAT), Stowhealth (a GP surgery based in ... by healthcare provider Simplyhealth. Telemetry technology, which is ...
(Date:1/15/2014)... VA (PRWEB) January 15, 2014 Two ... have continued their sponsorship of an annual competition for ... in, and access to, innovative STEM study. The competition ... TEAMS: Tests of Engineering Aptitude, Mathematics, and Sciences ...
(Date:1/15/2014)... DTS Language Services, Inc . is pleased to ... Science organizations who need document translations. Clients will now ... documents in advance with a selection of nearly 50 life ... a critical factor in clinical and scientific fields, and decrease ...
(Date:1/15/2014)... Sunnyvale, CA (PRWEB) January 15, 2014 ... throughput research solutions, today announced that Lupin Limited, one ... of Freeslate’s CM Protégé PharmD System for ... in Mumbai, India, is focused on a wide range ...
Breaking Biology Technology:Formula 1 Technology Tackles Obesity in Unique Healthcare Partnership 2Formula 1 Technology Tackles Obesity in Unique Healthcare Partnership 3Formula 1 Technology Tackles Obesity in Unique Healthcare Partnership 4Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 2Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 3Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 4Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 5DTS Improves Efficiency for Life Science Document Translations 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 3
... , Jan. 26 The following is a ... PharmAthene, regarding the Commission on the Prevention of Weapons of ... Card by the Commission on the Prevention of Weapons of ... America still remains vulnerable to bioterrorism.  Our Nation,s ability to ...
... , , TUALATIN, Ore. ... Bulletin Board: WYNX), a platform company dedicated to the ... announced that it has reached an agreement with British-based ... second generation Gas Quality Inferential Measurement Device (GasPT2). , ...
... Jan. 26 /PRNewswire-FirstCall/ - YM BioSciences Inc. (NYSE ... that it may now enroll patients at US clinical sites ... lead product, nimotuzumab. One of the two trials is in ... treatment and being treated palliatively and the other in patients ...
Cached Biology Technology:Waytronx Announces Agreement for Development and Production of Its GASPT2 Device With UK-Based Ingenion Design Limited 2Waytronx Announces Agreement for Development and Production of Its GASPT2 Device With UK-Based Ingenion Design Limited 3Waytronx Announces Agreement for Development and Production of Its GASPT2 Device With UK-Based Ingenion Design Limited 4YM BioSciences announces FDA clearance for two ongoing Phase II nimotuzumab trials into USA 2YM BioSciences announces FDA clearance for two ongoing Phase II nimotuzumab trials into USA 3YM BioSciences announces FDA clearance for two ongoing Phase II nimotuzumab trials into USA 4YM BioSciences announces FDA clearance for two ongoing Phase II nimotuzumab trials into USA 5
Rabbit polyclonal to Aortic Elastin ( Abpromise for all tested applications). entrezGeneID: 2006 SwissProtID: P15502...
Rabbit polyclonal to GPR56 ( Abpromise for all tested applications). entrezGeneID: 9289 SwissProtID: Q9Y653...
Mouse monoclonal [2A4] to Cytokeratin 8 + 18 + 19 ( Abpromise for all tested applications). Antigen: Cytokeratins isolated from cultured pig kidney epithelial cells. Entrez GeneID: 3856 S...
Feline Rhinotracheitis Virus...
Biology Products: