Navigation Links
Ancient whale fall from California's Ao Nuevo Island one of youngest, most complete known
Date:9/13/2007

clams in all, each less than a centimeter in length, or two-fifths of an inch, plus one snail. Most of these organisms were on the skull, but some were nestled in the vertebrae. Haasl, a mollusk expert, thought the clams might be similar to those that cluster around whale falls today and that are able to extract energy from chemicals in bones with the help of specialized symbiotic bacteria. At whale fall depths of more than 1,000 meters, there is no light for photosynthesis.

Based on the shape of the fossil clam shells attached to the whale skeleton, Pyenson and Haasl determined that they belong to the same group of mollusks whose living relatives are chemosynthetic, confirming their initial hypothesis that this was a whale fall. A visit by Pyenson and Haasl to Ao Nuevo Island in January 2007 showed that the whale came from 15 million-year-old sediments, the Monterey Formation, making the A o Nuevo find much younger than most fossil whale falls discovered around the globe, the oldest of which date from 40 million years ago, Pyenson said.

Whale falls were unknown to science until 1989, when the first example of a deep-sea community living on recently deceased whale carcasses was reported from southern California.

"The ocean floor is pretty much a desert until you get a whole whale carcass sinking to the bottom," Pyenson said. "We don't know how these creatures know to colonize it. Are they ever-present on the sea floor waiting for an animal to fall" But when the whale carcass hits, it forms this island refuge of high nutrient levels that can sustain an undersea community, some scientists calculate, for decades."

Over the past 18 years, more whale falls have been found around the world, and paleontologists have found examples in the fossil record as well. Most fossil examples, however, consist of isolated bones adjacent to deep-sea mollusks, Pyenson said. Little is known about the size or identity of the whale host.

In cont
'/>"/>

Contact: Robert Sanders
rsanders@berkeley.edu
510-643-6998
University of California - Berkeley
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Ancient olfaction protein is shared by many bugs, offering new pest control target
2. Researchers find missing genes of ancient organism
3. Family trees of ancient bacteria reveal evolutionary moves
4. Scientists find fossil proof of Egypts ancient climate
5. U-M team recovers ancient whale in Egyptian desert
6. Ancient immune defense mechanism is no match for HIV-1
7. Ancient DNA helps clarify the origins of two extinct New World horse species
8. Deep sea algae connect ancient climate, carbon dioxide and vegetation
9. Analysis of flower genes reveals the fate of an ancient gene duplication
10. Researchers Discover Ancient Origins Of Tuberculosis-causing Bacteria
11. Ancient DNA confirms single origin of Malagasy primates
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/17/2014)... a new crime unit designed to fight food fraud ... horse meat being passed off as beef scientists ... adulteration. They describe their approach, which represents a vast ... Agricultural and Food Chemistry . , Hans-Ulrich Humpf and ... economic problem. But they also say that adding, for ...
(Date:9/16/2014)... for Children,s Environmental Health at the Mailman School of ... between childhood asthma and prenatal exposure to two phthalates ... appear online in the journal Environmental Health Perspectives ... pregnancy to higher levels of the chemicals, butylbenzyl phthalate ... and 78 percent increase in risk of developing asthma ...
(Date:9/16/2014)... September, 2014)More than $100 trillion in cumulative public ... carbon dioxide (CO2)a 40 percent reduction of urban ... the world expands public transportation, walking and cycling ... by the University of California, Davis, and the ... , Further, an estimated 1.4 million early deaths ...
Breaking Biology News(10 mins):Phthalates heighten risk for childhood asthma 2Phthalates heighten risk for childhood asthma 3Global shift away from cars saves US$100 trillion, eliminates 1,700 MT of CO2 pollution 2Global shift away from cars saves US$100 trillion, eliminates 1,700 MT of CO2 pollution 3Global shift away from cars saves US$100 trillion, eliminates 1,700 MT of CO2 pollution 4Global shift away from cars saves US$100 trillion, eliminates 1,700 MT of CO2 pollution 5
... Wireless ... for Emergency Responders, WALL, N.J., Oct. 15 BIO-key ... and wireless public safety solutions, today announced that,it will be ... Chiefs of Police (IACP) Conference and,Exposition, October 15-17 at the ...
... (AD) is a progressive neurodegenerative disorder characterized by ... amyloid plaques and neurofibrillary tangles. Neuronal and synaptic ... occur in specific brain areas involved in memory ... cerebral deposition of A" plays a seminal role ...
... to ramp up testosterone production appears to drive male ... comes with an evolutionary cost. Big fluctuations in testosterone ... their own young, scientists have learned. In ... Indiana University Bloomington, University of Virginia and University of ...
Cached Biology News:BIO-key International Showcasing Innovative Public Safety Solutions at 2007 IACP Conference 2BIO-key International Showcasing Innovative Public Safety Solutions at 2007 IACP Conference 3Paradigm shift in Alzheimers's research: new treatments 2Paradigm shift in Alzheimers's research: new treatments 3Paradigm shift in Alzheimers's research: new treatments 4Testosterone turns male juncos into blustery hunks -- and bad dads 2Testosterone turns male juncos into blustery hunks -- and bad dads 3
(Date:9/17/2014)... 17, 2014 BioClinica®, Inc., a leading provider ... announced three of its experts are speaking at the ... Management to be held September 28 to October 1 ... Company also announced the innovative Compass technology, ... clinical trials acquired earlier this year, is up for ...
(Date:9/17/2014)... 2014 Intarcia Therapeutics, Inc. today ... study of the cost and predictability of non-adherence in ... Annual Meeting of the European Association for the Study ... Christian Frois , Ph.D., of Analysis Group, Inc. presented ... Intarcia-sponsored, retrospective studies to characterize the prevalence of non-adherence ...
(Date:9/17/2014)... SQI Diagnostics Inc. (TSX-V: SQD) (OTCQX: SQIDF), a life ... products for advanced microarray diagnostics, today announced that its ... the United States on the OTCQX ... 17, 2014 on the OTCQX under the symbol SQIDF.  ... Venture Exchange under its existing symbol SQD. ...
(Date:9/17/2014)... California , 17 de septiembre de ... ("la compañía"), principal proveedor mundial de soluciones ... las ciencias de la vida, anunció hoy ... de logística global con sede en Rótterdam, ... base de clientes Europa en rápido crecimiento. ...
Breaking Biology Technology:BioClinica to Present at 20th Annual SCDM Conference 2BioClinica to Present at 20th Annual SCDM Conference 3Intarcia Reveals New Insights At EASD Meeting Characterizing The Burden Of Poor Control And Non-Adherence To Anti-Diabetic Therapies 2Intarcia Reveals New Insights At EASD Meeting Characterizing The Burden Of Poor Control And Non-Adherence To Anti-Diabetic Therapies 3Intarcia Reveals New Insights At EASD Meeting Characterizing The Burden Of Poor Control And Non-Adherence To Anti-Diabetic Therapies 4Intarcia Reveals New Insights At EASD Meeting Characterizing The Burden Of Poor Control And Non-Adherence To Anti-Diabetic Therapies 5SQI Diagnostics to begin Trading on the OTCQX Marketplace in the United States 2SQI Diagnostics to begin Trading on the OTCQX Marketplace in the United States 3Cryoport contrata a Broekman Group para mejorar su apoyo operativo y logístico en Europa 2Cryoport contrata a Broekman Group para mejorar su apoyo operativo y logístico en Europa 3Cryoport contrata a Broekman Group para mejorar su apoyo operativo y logístico en Europa 4Cryoport contrata a Broekman Group para mejorar su apoyo operativo y logístico en Europa 5
... to Accelerate Workflow, CHICAGO, Nov. 27 ... the MAMMOMAT(R) Novation S, a new,digital mammography ... at the 93rd Scientific Assembly and Annual ... (RSNA) from Nov. 25 to 30 at,McCormick ...
... of Health, Labor and Welfare (MHLW), for the revolutionary ... ... the blood, IRVINE, Calif., Nov. 27 Masimo, the ... today announced approval of the Masimo Rad-57 Pulse CO-Oximeter,bringing the ...
... UCLA,s California NanoSystems Institute, the David Geffen School of ... have modeled the structure of the largest cellular particle ... drug delivery. , The research study, ... as a drug-therapy vehicle, appears in the Nov. 27 ...
Cached Biology Technology:Siemens Unveils New Digital Mammography System for Optimized Screening 2Masimo Corporation Given Approval to Market the Masimo Rad-57 Pulse CO-Oximeter in Japan 2Masimo Corporation Given Approval to Market the Masimo Rad-57 Pulse CO-Oximeter in Japan 3Masimo Corporation Given Approval to Market the Masimo Rad-57 Pulse CO-Oximeter in Japan 4Researchers outline structure of largest nonvirus particle ever crystallized 2
Peptide-affinity Purified Polyclonal Antibody to Purinergic Receptor P2Y12...
Purified anti-PXR...
Goat polyclonal to MLH3 Immunogen: Synthetic peptide: RQSLQQSMPPCEPP (Human) from C Terminus of the protein sequence according to NP_055196....
Purified anti-DNA-PKcs Phosphorylated (Thr2609)...
Biology Products: