Navigation Links
Plankton can run, but can't hide from basking sharks

Basking sharks are much more canny predators than previously thought, ecologists have discovered. According to new research published online by the British Ecological Society's Journal of Animal Ecology, basking sharks are able to reverse their normal pattern of diving at dawn and surfacing at dusk in order to foil the attempts of zooplankton trying to evade capture. As well as shedding new light on basking behaviour, the results have important implications for the conservation of shark species.

Dr David Sims of the Marine Biological Association and colleagues examined diving behaviour of four basking sharks (Cetorhinus maximus) - two in the shallow sea off Plymouth and two in the deep water off the shelf-edge southwest of Ireland and in northern Clyde Sea in Scotland - using pop-up tags that measure swimming depth, water temperature and light levels. The tags were programmed to detach themselves from the sharks at a set time, float to the surface and then drift with the currents like a "electronic messages in bottles", before being washed up on beaches and found by the public.

Sims found that while the sharks in deep waters exhibited normal diving behaviour, tracking the zooplankton Calanus up to the surface at dusk and then downward at dawn, sharks in the western English Channel did the reverse. This is the first time this behaviour has been observed among plankton-eating sharks, the authors say, and shows that shark diving behaviour differs predictably between deep waters and in shallow seas close to plankton-rich boundaries in water temperature.

Although the mechanisms underlying this behaviour are unclear, the results indicate that the sharks are responding to changes in vertical migration by the zooplankton. Zooplankton have evolved a range of behaviours to try and avoid being eaten, sometimes staying at greater depths during the day and then feeding near the surface at night but at other times reversing this behaviour in an attempt to t
'"/>

Source:Blackwell Publishing Ltd.


Page: 1 2

Related biology news :

1. Scientists find viruses cant stick to sea bugs in the dark
2. The reason why antiviral therapy cant annihilate HIV infection, and what to do about it
3. When nerve cells cant make contact
4. A frown or a smile? Children with autism cant discern
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Plankton can run but can hide from basking sharks

(Date:7/31/2015)... , July 31, 2015 The 10 th ... be held by BGI from October 22-25, 2015, in ... The conference is celebrating its 10 th anniversary this ... of the world,s most influential annual meetings in the ,omics, ... enjoyable scientific gatherings. ICG-10 focuses on recent ...
(Date:7/23/2015)... Research and Markets ( http://www.researchandmarkets.com/research/rzzp3v/global_outlook_of ) ... Outlook of the Biometrics Industry 2015 " ... global biometrics market is likely to witness significant ... to the uptake of multiple technologies available. The ... the growth of biometrics in existing applications as ...
(Date:7/13/2015)... , July 13, 2015 Synaptics ... of human interface solutions, today announced sampling of ... and display driver integration (TDDI) product targeting smartphones ... first to combine Synaptics , best-in-class touch ... display driver technology developed in the company,s Japan ...
Breaking Biology News(10 mins):The 10th International Conference on Genomics (ICG-10) to Open in October 2Global Outlook of the Biometrics Industry 2015 2Global Outlook of the Biometrics Industry 2015 3Synaptics Announces Sampling of Second Generation TDDI Solutions 2Synaptics Announces Sampling of Second Generation TDDI Solutions 3
... volume of online scientific data, a new style of ... have a direct impact on scientists and clinicians. ... Biology and Faculty of 1000 Medicine, are each launching ... journals, called F1000 Reports, are unlike existing scientific journals ...
... wide-open spaces of the Flint Hills may no longer ... familiar grassland birds, according to research by a Kansas ... found that three bird species common to the Flint ... population decline in the face of extensive land-management practices ...
... epidemiological study of men and post-menopausal women primarily over ... associated with greater bone mineral density (BMD). Researchers at ... Aging (USDA HNRCA) at Tufts University found associations were ... significantly lower in men drinking more than two servings ...
Cached Biology News:World's experts identify the hottest trends in biology and medicine 2Birds in Flint Hills of Kansas, Oklahoma face population decline despite large habitat 2Birds in Flint Hills of Kansas, Oklahoma face population decline despite large habitat 3Moderate alcohol intake associated with bone protection 2Moderate alcohol intake associated with bone protection 3
(Date:8/3/2015)...  Halozyme Therapeutics, Inc. (NASDAQ: HALO ) will ... quarter 2015 on Monday, August 10, 2015 at 4:30 ... president and chief executive officer, will lead the call. ... results for the second quarter 2015. The ... of Halozyme,s corporate website and a recording will be ...
(Date:8/3/2015)... 2015  ArroGen Group, an integrated advanced forensic ... Identification™ (FMID) technology Aug. 2-8 at the International ... Sacramento, Calif. FMID, a ... enforcement agents, district attorneys and government agencies to ... By analyzing chemical residues on fingerprints taken ...
(Date:8/3/2015)... At the 11th hour, London,s ... of Jude Liversage,s campaign so the seven-year-old ...      (Photo: http://photos.prnewswire.com/prnh/20150803/254228 ) ... The Selective Dorsal Rhizotomy (SDR) procedure reduced the spasticity ... wish to kick a ball around like his schoolmates. ...
(Date:8/3/2015)... Ga. , Aug. 3, 2015  MiMedx Group, ... company utilizing human amniotic tissue and patent-protected processes to ... Wound Care, Surgical, Orthopedic, Spine, Sports Medicine, Ophthalmic and ... present at the 35 th Annual Canaccord|Genuity Growth ... H. "Pete" Petit, Chairman and CEO, William C. ...
Breaking Biology Technology:Halozyme to Host Second Quarter 2015 Financial Results Conference Call 2ArroGen Previews New Fingerprint Molecular Identification Technology 2Cerebral Palsy Operation by The Portland Hospital Allows a Boy to Stand Properly for the First Time 2Cerebral Palsy Operation by The Portland Hospital Allows a Boy to Stand Properly for the First Time 3MiMedx To Present At 35th Annual Canaccord|Genuity Growth Conference 2
... /PRNewswire-FirstCall/ - YM BioSciences Inc. (NYSE Amex: YMI, ... York), a licensee of several small molecule compounds ... of Health (NIH) Small Business Innovation Research (SBIR) ... Phase I awards to develop novel treatments for ...
... a bad rap for contributing to hypertension and cardiovascular disease. ... Sciences have discovered that sodium also plays a key role ... Tufts scientists have found a way to regenerate injured spinal ... an influx of sodium ions into injured cells. ...
... and global contributions to clean water and environmental causes, ... to invention and the pursuit of discovery, Professor Xiaoguang ... Stevens Institute of Technology at the university,s annual Convocation ... professor in the Charles V. Schaefer, Jr. School of ...
Cached Biology Technology:YM BioSciences licensee Pulmokine awarded NIH funding to develop small molecule drugs for pulmonary hypertension 2YM BioSciences licensee Pulmokine awarded NIH funding to develop small molecule drugs for pulmonary hypertension 3Sodium plays key role in tissue regeneration 2Sodium plays key role in tissue regeneration 3Xiaoguang Meng receives honorary master of engineering from Stevens 2Xiaoguang Meng receives honorary master of engineering from Stevens 3
... Complete Solution Polymorphic DNA ... We provide a complete solution for SNP ... assay design, oligonucleotide primers, PCR amplification, DNA ... For SNP discovery, Polymorphic uses ...
... mini ReadySub-Cell GT cell and PowerPac basic power ... of nucleic acids in agarose gels. The mini ... cables and electrodes, and leveling bubble. The PowerPac ... output of 10-300 V, 4-400 mA, and 75 ...
... CE-based system provides clear advantages over ... load, gene expression), mutation analysis, and ... system with microplate connectivity is ideal ... quality control. The P/ACE Series ...
The imaging screen-K (Kodak), tritium, is a 20 x 25 cm storage phosphor screen that is used for the quantitation and imaging of 32P, 33P, 35S, 14C, and 3H....
Biology Products: