Navigation Links
Surviving mass extinction by leading a double life
Date:7/14/2009

Drifting across the world's oceans are a group of unicellular marine microorganisms that are not only a crucial source of food for other marine life but their fossils, which are found in abundance, provide scientists with an extraordinary record of climatic change and other major events in the history of the earth.

Now, planktonic foraminifera single-celled shell building members of the marine microplankton community have given up a secret of their very own.

A team of experts, including scientists from The University of Nottingham, have presented remarkable evidence that planktonic foraminifera may have survived mass extinction by taking refuge on the sea floor.

Dr Chris Wade from the Institute of Genetics, said: "Using genetic data we have been able to prove that the planktonic species Streptochilus globigerus and the benthic sediment living foraminiferan Bolivina variabilis are one and the same biological species. Moreover, geochemical evidence shows that this species actively grows within the open-ocean surface waters, thus occupying both planktonic and benthic domains. Such ecologically-flexible species are eminently suited to the recolonisation of the extinction-susceptible planktonic domain following mass extinctions events, such as the end-Cretaceous event."

It had been thought that all modern planktic foraminifers were descended from the few lucky survivors of the meteor impact that wiped out the dinosaurs and 65 to 70 per cent of life on earth 65 million years ago. However, this might not be the case.

Dr Wade together with PhD student Heidi Seears have shown that live specimens of the planktonic species Streptochilus globigerus, collected 600 miles offshore in the middle of the Arabian Sea, are genetically identical to the benthic species Bolivina variabilis, found off the coast of Kenya.

Their surprising discovery suggests that planktonic foraminifera may have survived the end Cretaceous mas
'/>"/>

Contact: Dr. Chris Wade
chris.wade@nottingham.ac.uk
44-115-823-0391
University of Nottingham
Source:Eurekalert

Page: 1 2

Related biology news :

1. Surviving the revolution, easier than withstanding human use and abuse
2. Report: African, Asian, Latin American farm animals face extinction
3. Scientists fear rare dolphin driven to extinction by human activities
4. Research team says extraterrestrial impact to blame for Ice Age extinctions
5. Fossil record supports evidence of impending mass extinction
6. Meteor no longer prime suspect in great extinction
7. NAS Biodiversity and Extinction Meeting Dec. 7-8
8. Scientists warn that species extinction could reduce productivity of plants on Earth by half
9. Stanford researchers say climate change will significantly increase impending bird extinctions
10. Fish farms drive wild salmon populations toward extinction
11. Recovering from a mass extinction
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/17/2014)... new way the immune system may fight cancers and ... immune cells to treat illness. , The research, in ... of "neighborhood police" specialized squads of defenders that ... an entire city, the body. , Scientists at Washington ... that the liver, skin and uterus each has dedicated ...
(Date:4/17/2014)... View of Domestication," a special feature of The ... ( PNAS ) published April 29, raises a ... deep history that most of us take for granted. ... in many spots around the globe shifted from hunting ... and plants. , It seems so straightforward and yet ...
(Date:4/16/2014)... green sea turtle fishery has uncovered a stark reality: ... may have become an unsustainable take, according to conservation ... Florida. , During the research period, conservation scientists estimated ... 1991 and 2011, with catch rates peaking in 1997 ...
Breaking Biology News(10 mins):Some immune cells defend only 1 organ 2Genetic study tackles mystery of slow plant domestications 2Genetic study tackles mystery of slow plant domestications 3Genetic study tackles mystery of slow plant domestications 4Declining catch rates in Caribbean green turtle fishery may be result of overfishing 2Declining catch rates in Caribbean green turtle fishery may be result of overfishing 3
... effect on the formation of cells in the intervertebral discs. ... University of Gothenburg, presented at the annual meeting of the ... which is currently taking place in Gothenburg. The ... a positive effect on cells in the intervertebral discs. The ...
... (CVD), driven by the global pandemics of obesity and ... 21st century. Despite progress, there is still much to ... key risk factor. In Europe, as many as one-half ... specifically focused on managing dyslipidaemias offer new hope.3,4 Experts ...
... shallow water sandy bottoms on the surface appear desert-like and ... a diverse fauna flourishes. In addition to bacteria and protozoa ... One of the strangest members of this interstitial fauna is ... flatworm, which is found from tropical oceans to the Mediterranean. ...
Cached Biology News:Exercise produces positive effects on the intervertebral discs 2First joint ESC/EAS guidelines for the management of dyslipidaemias 2First joint ESC/EAS guidelines for the management of dyslipidaemias 3First joint ESC/EAS guidelines for the management of dyslipidaemias 4Ancient symbiosis between animals and bacteria discovered 2
(Date:1/15/2014)... More than 5 million Americans are ... 3 seniors will die with Alzheimer’s or another dementia, ... have shocked many Americans into looking for ways to ... tragic age-related cognitive disorders. Jonathan Weisman, president of Biohack ...
(Date:1/15/2014)... CA (PRWEB) January 15, 2014 ... research solutions, today announced that Lupin Limited, one of ... Freeslate’s CM Protégé PharmD System for high ... Mumbai, India, is focused on a wide range of ...
(Date:1/14/2014)... 14, 2014 Histogen, Inc., a regenerative ... cells grown under simulated embryonic conditions, today announced that ... Suneva Medical, Inc. for physician-dispensed aesthetic products containing Histogen’s ... This agreement is an amendment to the existing license ...
(Date:1/14/2014)... and BETHESDA, Md. , Jan. 14, ... with two institutes from the National Institutes of Health ... bringing safer, more effective treatments to patients on a ... for Advancing Translational Sciences (NCATS) and the National Eye ...
Breaking Biology Technology:Biohack Pure Offers 5 Tips for Increasing Memory in 2014 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 3Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 2Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 3Organovo Announces Collaboration with National Institutes of Health 2Organovo Announces Collaboration with National Institutes of Health 3
... Century Health announced today that its board of directors ... Dr. Dhir will spearhead the national expansion of New ... and cardiology.  Water Street Healthcare Partners, a strategic private ... in New Century Health last year, recruited Dr. Dhir ...
... Life Technologies Corporation (NASDAQ: LIFE ) ... intention to redeem all of the outstanding 1.5% Convertible ... February 15, 2012. As of December 31, 2011 there ... Convertible Notes outstanding. The redemption notice provided includes CUSIP ...
... nano-composites are used in a wide variety of ... automotive and aerospace applications. Thermal analysis is routinely ... the growing trend to use nanostructured materials has ... years an atomic force microscope-based technique called nanoscale ...
Cached Biology Technology:Former Sanofi-aventis and US Oncology Executive Joins New Century Health as Chief Executive Officer 2Life Technologies Announces Redemption of 1.5% Convertible Senior Notes Due 2024 2Magnetic actuation enables nanoscale thermal analysis 2
A flexible 24-48 hour DNA sequencing service. Samples may be shipped in standard 1.5mL tubes. Oligo synthesis and DNA preparation available. Read lengths up to 850 Phred 20 bases. Universal primers p...
... pass sequencing of plasmids and PCR ... our high performance sequencing pipeline which ... per day. The key benefits we ... are rapid turnaround, high sequencing pass ...
... Fully automated, GLP-compliant Facility , Galaxy ... software , Highly experienced scientists ,We offer ... inserts or full plasmids for single or ... is used when the DNA of interest ...
... of individual research samples, including PCR amplicons, ... world-class, high performance sequencing pipeline processes over ... The key benefits of Agencourt's QuickLane Research ... hour sample turnaround, industry leading sequence quality ...
Biology Products: