Navigation Links
Ocean seep mollusks may share evolutionary history with other deep-sea creatures

The unusual mollusks of oceanic cold seeps--strange clams, mussels and sea snails that thrive in the sulfur and methane-rich environments--are on average older than the marine mollusk community as a whole, according to a new report in the 8 September issue of the journal Science, published by AAAS, the nonprofit science society.

On average, the first appearance of cold seep mollusk genera in the geological record is a full epoch earlier than that of marine mollusks in general, according to Steffen Kiel and Crispin Little of the University of Leeds.

These findings indicate that the long evolutionary history of the seep mollusks is more similar to that of other deep-sea animals than to some of their mollusk contemporaries from other parts of the oceans.

Cold seeps may have been--and continue to be--safe harbors for the mollusks, protecting them from mass extinctions and possible abrupt oxygen changes in the seas, the researchers found. However, many deep-sea species outside of the cold seeps have also managed to ride out these changes.

"The shallow water environment is much more challenging, subject to changes in sea levels, extinction events, pollution, sediment runoff--all sorts of factors which don't affect animals in the deep sea," Little explained.

This makes it difficult to tell whether seep mollusks owe their long evolutionary history to their unique home environment or to their status as deep-sea creatures, he noted.

Cold seeps are places where fluids rich in hydrogen sulfide and methane leak up through the ocean floor, creating a unique chemical environment where hardy bacteria process the sulfide and methane. Seep fluids are about the same temperature as surrounding waters, but similar chemically challenging environments exist at hydrothermal vents, fissures in the ocean floor where water is superheated by magma lurking just below the crust.

Although seep and vent fluids are a poisonous brew for most sp
'"/>

Source:American Association for the Advancement of Science


Page: 1 2 3

Related biology news :

1. Oceans more vulnerable to agricultural runoff than previously thought, study finds
2. Breakthrough System for Understanding Ocean Plant Life Announced
3. Ocean climate predicts elk population in Canadian Rockies
4. New Scripps Oceanography project to study sediments and ecosystem restoration in Venice lagoon
5. Oceans turning to acid from rise in CO2
6. The Antarctic Ocean floor
7. Ocean dead zones trigger sex changes in fish, posing extinction threat
8. Oceans are 70 percent shark free
9. Ocean virus identified in human blood samples
10. MIT: Oceans are a major gene swap-meet for plankton
11. Ocean acidification threatens cold-water coral ecosystems
Post Your Comments:
(Date:8/25/2014)... that promotes virus entry into cells also has the ... viruses, University of Missouri researchers have found. , "This ... our understanding of not only HIV infection, but also ... M.D., Ph.D., associate professor in the MU School of ... study was recently published in the Proceedings of ...
(Date:8/25/2014)... reproduces by manipulating the behavior of ants emits ... brain of its natural target host, but not ... shows., The findings, which suggest that the fungus ... the molecular mechanisms underlying this phenomenon, according to ... to secrete chemicals that affect their environment," noted ...
(Date:8/25/2014)... 25, 2014 Riddell, the leader in football ... Research Institute (TGen), a leader in cutting-edge genomic ... University and its Sun Devil football program will ... to advance athlete concussion detection and treatment. , ... project will combine molecular information and head impact ...
Breaking Biology News(10 mins):MU researchers discover protein's ability to inhibit HIV release 2MU researchers discover protein's ability to inhibit HIV release 3Zombie ant fungi 'know' brains of their hosts 2Zombie ant fungi 'know' brains of their hosts 3Riddell, TGen team with ASU football to further genetic research into concussion detection 2Riddell, TGen team with ASU football to further genetic research into concussion detection 3
... Harvard Medical School (HMS) report in the April 23 ... encode the values that subjects assign to different items. ... of decision-making that occurs when someone chooses between different ... in various parts of the brain respond to separate ...
... up to $10.3 million to help develop a new prosthetic arm ... Utah work is a key part of a U.S. Department of ... device for soldiers and potentially others whose arms were amputated. , ... thoughts, that allows you to feel both the outside world and ...
... depression by manipulating the neurotransmitter serotonin in the brain ... that are not yet understood, say scientists from Georgetown ... That's because the investigators found, for the first time, ... immune system, and that the chemical is specifically used ...
Cached Biology News:Attention shoppers: Researchers find neurons that encode the value of different goods 2Attention shoppers: Researchers find neurons that encode the value of different goods 3Both alcoholism and chronic smoking can damage the brain's prefrontal cortex 2Both alcoholism and chronic smoking can damage the brain's prefrontal cortex 3Both alcoholism and chronic smoking can damage the brain's prefrontal cortex 4Both alcoholism and chronic smoking can damage the brain's prefrontal cortex 5Commonly used antidepressants may also affect human immune system 2Commonly used antidepressants may also affect human immune system 3
(Date:8/27/2014)... August 27, 2014 Riviera Beach, ... announcing the creation of the Sancilio Scientific Advisory ... the SCI’s philosophy of looking to nature for ... development actions are based on sound scientific data, ... Advisory Board provides a vehicle for SCI to ...
(Date:8/27/2014)... State College, PA (PRWEB) August 27, 2014 ... Electromagnetic Simulation Software with new features for the ... release is an enhanced Biological Thermal Sensor, exclusive to ... is a specialty version of XFdtd, developed to calculate ... MATLAB® export functionality has been added to all versions ...
(Date:8/26/2014)... 2014  NeuroSigma, Inc., a Los Angeles ... technologies, today announced that it has filed a registration ... Exchange Commission relating to a proposed initial public offering ... be offered and the price range for the proposed ... LLC will act as the book-running manager for the ...
(Date:8/26/2014)... 2014 - A team of engineers from Singapore ... sensor network (WSN) for satellite communications. , With ... in satellite design, constructing a lightweight, low power-consuming, ... inside the satellite has always been a challenge ... the Satellite Research Centre of Nanyang Technological University ...
Breaking Biology Technology:New Sancilio & Company, Inc. Scientific Board 2New Sancilio & Company, Inc. Scientific Board 3Remcom Announces Enhanced Biological Thermal Sensor and Other Biomedical Features in XFdtd EM Simulation Software Update 2Remcom Announces Enhanced Biological Thermal Sensor and Other Biomedical Features in XFdtd EM Simulation Software Update 3ZigBee in the Sky 2
... HAVEN, Conn., Sept. 9 Rib-X Pharmaceuticals, ... focused on the,discovery and development of novel ... today the formation of its,Clinical Advisory Board. ... will provide oversight and counsel on matters ...
... announces the,availability of MarketStats for agri-biotech equities ... offers a perspective on the,aforementioned equities and ... blogs and opinions., Investors can view ... division of FiSpace.net, a dynamic social networking ...
... Affitech AS, the Norwegian,antibody therapeutics company, today announced ... Chairman of its Board of Directors. The,Company,s previous ... of the,Board. Mr Broymer welcomed Dr McCullagh,s appointment ... McCullagh has agreed to take over from me ...
Cached Biology Technology:Rib-X Pharmaceuticals, Inc. Announces Formation of Clinical Advisory Board 2Rib-X Pharmaceuticals, Inc. Announces Formation of Clinical Advisory Board 3SectorWatch.biz Issues MarketStats on Agri-Biotech Equities YGYB, GRO, SEED, MON, ADM, and BG 2Affitech Appoints Dr. Keith McCullagh as Chairman 2Affitech Appoints Dr. Keith McCullagh as Chairman 3
... Sheep polyclonal to Decorin ( ... Antigen: Synthetic ... to amino acids 6-19 of Human ... molecule bone proteoglycan II). ...
... VSOS-4P, all Programmable and Digital Orbital Shaker. Our ... redesigned to make every day use even easier. ... for up to 4 different programs. Its easy ... program. Furthermore, the VSOS-4P has a pulse operation ...
... enables early selection of the best ... quantitative data for sensitivity, dynamic range, ... Furthermore quantitative antibody fingerprints can be ... your antibodies., The full-service package includes ...
... is a new generation of microarrays to ... enables you to rapidly elucidate alternatively spliced ... relevant for drug discovery. The service combines ... design and customized analysis with Agilents robust ...
Biology Products: