Navigation Links
Coastal animals have their own tidal timer -- separate from the 24-hour body clock
Date:9/26/2013

cking down two of the key circadian clock genes, which they had identified.

They were also able to block the circadian cycle by exposing Eurydice to a constant bright light for many days.

With both of these genetical and environmental manipulations, the circadian rhythm in the sunscreen cells became severely disrupted, but the tidal swimming rhythm just kept on ticking every 12.4 hours.

This showed conclusively that the animals' tidal patterns are independent of their 24 hour circadian clock.

The researchers believe these results along with a parallel study on coastal worms published simultaneously in the journal Cell Reports on 26 September which came to a similar conclusion - suggest that many other coastal animals will have similar circatidal systems.

Principal investigator Professor Charalambos Kyriacou, Professor of Behavioural Genetics in the University's Department of Genetics, said: "Most coastal animals will have 24 hour rhythms in some aspects of their physiology, but their most important geophysical cycle is the tides coming in and out and so they have evolved circatidal rhythms to cope with this rapidly changing environment.

"Eurydice pulchra have both a 24 hour rhythm and a 12.4 hour rhythm, which relates to the gravitational pull of the moon on the earth's tides.

"People have speculated that the 24 hour clock could be driving the 12.4 hour clock, because all it would take is for two 24 hour clocks in the brain to work in antiphase with each other.

"This would give two approximate 12 hour rhythms. We have shown that if we knock down the genes that code for their 24 hour clock, the animal still has very robust tidal rhythms.

"This shows that the 12.4 hour clock is independent from the circadian clock. I expect tidal rhythms in many coastal organisms will follow this rule including insects, crabs, even plants."


'/>"/>

Contact: Charalambos Kyriacou
cpk@le.ac.uk
01-162-523-430
University of Leicester
Source:Eurekalert

Page: 1 2

Related biology news :

1. Oceanographer Sylvia Earle kicks off Northeasterns Sustaining Coastal Cities Conference
2. Study finds maize in diets of people in coastal Peru dates to 5,000 years ago
3. Brown University scientists to discuss resilience of coastal communities at AAAS
4. Sustaining Coastal Cities Conference at Northeastern University
5. Preserve the services of mangroves -- Earths invaluable coastal forests, experts urge
6. Destroyed coastal habitats produce significant greenhouse gas
7. Clemson, Coastal Carolina universities to set hundreds of sensors in Savannah River
8. PSU study finds caffeinated coastal waters
9. Increasing levels of carbon dioxide in Arctic coastal seas
10. Personality interactions between animals may dictate outcomes in the wild
11. Relating animals to humans could help conservation projects
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/2/2015)... 2, 2015 Fingerprint Cards (FPC) ... FPC1025 from the distributor World Peace Industrial Group (WPI), ... 2015 although the major part of the shipments will ... used by smartphone manufacturers in China ... in the communicated revenue guidance of + 1 000 MSEK ...
(Date:3/31/2015)... March 31, 2015   Guidepoint , a leading ... the Post-Surgical Pain Management TRACKER, part of the ... trends in the medical device and therapeutics markets. The ... including treatment volumes, market share, and adoption rates across ... with joint surgery. The Post-Surgical Pain Management ...
(Date:3/24/2015)... 24, 2015 Research and Markets ( http://www.researchandmarkets.com/research/kvdtcw/face_and_voice ) ... - Global Strategic Business Report" report to their offering. ... Biometrics in US$ Thousands by the following Segments: Face Biometrics, and ... Canada , Japan , ... Middle East & Africa , and ...
Breaking Biology News(10 mins):Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 110 Million 2Guidepoint Launches Post-Surgical Pain Management TRACKER 2Guidepoint Launches Post-Surgical Pain Management TRACKER 3Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 2Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 3Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 4Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 5Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 6
... environs to take up residence in a large and ... University Bloomington scientists report in this week's Science that ... , "Plants that reproduce clonally or are capable of ... the nucleus," said graduate student Yaniv Brandvain, lead author ...
... and give a short-term boost to cognitive skills, a University ... Professor Ian Macdonald found that consumption of a cocoa drink ... blood flow to key areas of the brain for two ... areas of the brain may help to increase performance in ...
... Dentistry (NYUCD) research team has found the first oral bacterial ... Africa to Asia. , The team, led by ... NYUCD, discovered that Streptoccocus mutans, a bacterium associated with dental ... clear line that can be traced back to a single ...
Cached Biology News:Mitochondrial genes move to the nucleus -- but it's not for the sex 2Boosting brain power -- with chocolate 2'Ancestral eve' was mother of all tooth decay 2
(Date:4/24/2015)... 2015  Navitas Life Sciences is delighted to announce the ... and Regulatory Services. Shalabh is a proven leader in Life ... of Kinapse, as well as a Strategy consultant at Accenture. ... http://photos.prnewswire.com/prnh/20150423/201261LOGO ... am delighted to welcome Shalabh into this critical role and ...
(Date:4/23/2015)... April 24, 2015 Ralco announced today ... Birthright Nutrition® (ABN) for the exclusive worldwide rights to ... new technology is a new in-line milk system that ... allowing them to move supplementation milk cups within a ... , “This technology lets producers get Birthright™ milk to ...
(Date:4/23/2015)... 2015 /CNW/ - A new and innovative service has ... North America,s largest packaging trade ... in the "Sustainability, service" category of the PAC ... Comparison" is a service that scores clients, packaging ... peers. This benchmarking process shows clients how their ...
(Date:4/23/2015)... April 23, 2015  Neurocrine Biosciences, Inc. (Nasdaq: ... its first quarter 2015 results before the Nasdaq market ... host a live conference call and webcast to discuss its ... April 30, 2015 at 8:00 a.m. Eastern Time (5:00 ... live conference call by dialing 866-952-1906 (US) or 785-424-1825 ...
Breaking Biology Technology:Shalabh Kumar Joins Navitas Life Sciences to Lead their Clinical and Regulatory Services Teams 2Ralco Acquires License to Birthright™ Moveable Milk Cup 2Neurocrine Biosciences Announces Conference Call and Webcast to Report First Quarter 2015 Results 2
... Richard Duffey, M.D., to its LASIK Directory. ... also serves patients from Pensacola, Florida and from ... Mississippi.,Trusted LASIK Surgeons launched its revolutionary Trusted LASIK ... consumers at www.TrustedLASIKSurgeons.com . What sets the ...
... Varian, Inc.,(NasdaqGS: VARI) introduced its new dual wavelength ... proteins. The SuperNova(TM) is the,first dual wavelength diffraction ... It includes innovations in both X-ray,technology and data ... crystals., Single crystal X-ray diffraction is used ...
... Quality and process,improvement efforts gained new momentum ... higher efficiencies fueled by a stagnating economy.,Biopharmaceutical companies ... pipelines are affecting the bottom line, competition for ... brought more scrutiny to R&D,and New Product Development ...
Cached Biology Technology:Trusted LASIK Surgeons Welcomes Mobile Alabama Expert Refractive Eye Surgeon Richard Duffey, M.D. to Its LASIK Directory For Consumers 2Trusted LASIK Surgeons Welcomes Mobile Alabama Expert Refractive Eye Surgeon Richard Duffey, M.D. to Its LASIK Directory For Consumers 3Trusted LASIK Surgeons Welcomes Mobile Alabama Expert Refractive Eye Surgeon Richard Duffey, M.D. to Its LASIK Directory For Consumers 4Trusted LASIK Surgeons Welcomes Mobile Alabama Expert Refractive Eye Surgeon Richard Duffey, M.D. to Its LASIK Directory For Consumers 5Trusted LASIK Surgeons Welcomes Mobile Alabama Expert Refractive Eye Surgeon Richard Duffey, M.D. to Its LASIK Directory For Consumers 6New Dual Wavelength X-ray Diffractometer From Oxford Diffraction, Now a Part of Varian, Inc., Allows Increased Throughput for Challenging Single Crystal Analyses 2Leading Biopharmas Will Deliver Case Studies on Achieving Productivity Excellence through Engagement, Technology, Other Tools 2
... This product has been developed to significantly ... labeled proteins. Stability is increased at ... 2-8 centigrade. This product is subjected ... mercury or azide. This formulation insures ...
...
These 25x25 square No.1 Corning cover glasses are made from No. 0211 zinc titania glass and are 0.16 to 0.19mm thick. • Approx. Pcs Oz : 102...
... Bead Separation is a powerful tool for ... Typical applications are DNA/RNA or protein purification ... has been fully automated on the Genesis ... Te-MagS. ,In combination with the RoMa ...
Biology Products: