Navigation Links
Evidence suggests Antarctic crabs could be native
Date:7/4/2013

A new study has cast doubt on the claim that crabs may have disappeared from Antarctica only to return due to warming seas.

The theory surfaced two years ago following the discovery of a major colony of King crabs (Lithodidae) in the Palmer Deep, a basin in the continental shelf off the Antarctic Peninsula. It was thought the species may have left the continent between 40 and 15 million years ago and was returning as seawater temperatures rose. Fears were expressed that its reintroduction would decimate other fauna in the region. But an extensive study of all known crab records by a team of scientists at British Antarctic Survey (BAS) has led it to conclude the crabs may have been there all along rather than moving in from a different area.

Writing in the online journal PLOS ONE the team, led by marine biologist, Huw Griffiths, claims the "invasion" hypothesis is fundamentally flawed because it relied upon poor fossil records relating to a completely different group of crabs and that sampling of the extant species is far too limited to draw any firm conclusions.

The fossils of deep water crabs are hard to come by because they are susceptible to decay soon after they die. There is no Antarctic fossil record for King crabs with only two such records existing, neither of which originate from Antarctic waters (south of 60S). Much of Antarctica is covered with ice restricting access to areas where fossils may be found. This means there is a great deal of uncertainty surrounding the history of crab populations in the continent.

The team assembled a database of more than sixteen thousand records of living and fossil crabs to assess the extent of their populations. Fossil data were compiled from all previously published sources as well as the extensive fossil collection at BAS' offices in Cambridge. All published data for living specimens were examined as well as records from unpublished fisheries' and scientific reports.

The first r
'/>"/>

Contact: Paul Seagrove
psea@bas.ac.uk
44-012-232-21414
British Antarctic Survey
Source:Eurekalert

Page: 1 2

Related biology news :

1. ACRG and BGI report new evidence for the genetic bases of liver cancer
2. First international collaboration to showcase latest body of evidence of dairy health benefits
3. First evidence that the genome can adapt to temperature changes
4. Evidence of host adaptation of avian-origin influenza A virus
5. New evidence on how fluoride fights tooth decay
6. AACR news: Studies show increasing evidence that androgen drives breast cancer
7. New evidence dinosaurs were strong swimmers
8. New evidence shows PubMed Central undermines journal usage
9. New evidence that comets could have seeded life on Earth
10. Increasing evidence links high glycemic index foods and dairy products to acne
11. Animal magnetism: First evidence that magnetism helps salmon find home
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/24/2014)... NJIT this week for an all-day public forum on ... Agency (EPA) to dredge toxic sediment from an eight-mile ... has called the plan, which proposes removing 4.3 million ... the riverbed, one of the largest cleanups in the ... disposed off-site. , "We need to ensure the future ...
(Date:7/24/2014)... is currently conducting research into the potato genes that ... by a reduction in rainfall and increased extremes of ... most resistant genes in order to create new potato ... research is also seeking to find out how the ... greater drought and higher and lower temperatures. , This ...
(Date:7/24/2014)... successfully treated lupus in mice, a biomedical engineer at the ... his research to a new version of the drug in ... Chandra Mohan, Hugh Roy and Lillie Cranz Cullen Endowed Professor ... Arthritis Research & Therapy outlining the use of a new ... number of cases of lupus-related kidney disease., He now has ...
Breaking Biology News(10 mins):Experts Weigh the Pros and Cons of a $1.7 Billion EPA Cleanup Plan for the Passaic River at an NJIT 2Neiker-Tecnalia is researching the potato genes that best adapt to climate change 2Biomedical engineer looks at new applications for novel lupus drug 2Biomedical engineer looks at new applications for novel lupus drug 3
... states that when dinosaurs died and became fossilized, ... transformed into "rocks" through a gradual replacement of ... a North Carolina State University paleontologist, however, could ... Mary Schweitzer, assistant professor of paleontology with a ...
... may be in its infancy, but biologists may soon ... living cell like never before. Scientists at the U.S. ... and Lawrence Livermore National Laboratory have developed a way ... can track life's fundamental processes, such as DNA repair, ...
... has,found the first clear evidence that the process ... and respond to a million,different proteins might have ... function is to jump around in genetic material., ... genetic material, and scientists,have suspected that this ability ...
Cached Biology News:NC State scientist finds soft tissue in T. rex bones 2Nano-Probes Allow an Inside Look at Cell Nuclei 2Nano-Probes Allow an Inside Look at Cell Nuclei 3UCSD Discovery Shows How Embryonic Stem Cells Perform 'Quality Control' Inspections 2UCSD Discovery Shows How Embryonic Stem Cells Perform 'Quality Control' Inspections 3
(Date:7/24/2014)... N.J. , July 24, 2014 ... provider of regulatory and ethical review services for ... Alliance Biosciences. Formerly a division of ... was the leading biosafety and biosecurity consulting firm ... With this addition, WCG,s biosafety division – WCG ...
(Date:7/24/2014)... 2014 The first part of the ... First in Human Studies” will cover comprehensive clinical support ... , With increasing R&D costs and declining industry success ... maximize the knowledge collected in early Phase I/IIa study ... in late stage development. , Next, the presenters will ...
(Date:7/24/2014)... Md. , July 24, 2014  Spherix Incorporated ... the fostering and monetization of intellectual property, today announced ... the period ending June 30, 2014 on Monday, August ... call at 10 a.m. ET on Monday, August 18, ... be led by the company,s CEO, Anthony Hayes ...
(Date:7/24/2014)... Bound Brook, NJ (PRWEB) July 24, 2014 ... expects to manage numerous projects in the MENA region ... delighted to have a preferred provider agreement with DZS ... in the MENA region,” said Global VP of R&D ... "DZS has developed excellent operational practices with a ...
Breaking Biology Technology:WIRB-Copernicus Group Announces Acquisition of Alliance Biosciences; Executives Join WCG Biosafety Division 2WIRB-Copernicus Group Announces Acquisition of Alliance Biosciences; Executives Join WCG Biosafety Division 3Best Practices for Optimizing Dose Escalation in First in Human Studies, New Webinar August 6th Hosted by Xtalks 2Spherix Schedules Shareholder Update Call 2SBI Pharmaceuticals Co. Ltd. Enters into Preferred Provider Agreement with DZS Clinical Services 2
... integrated data that combines business and technology strategies, is ... murky technology concept it is a leading-edge business ... convergence allows companies to communicate more completely and at ... the bottom line. , ,In my own experience, ...
... help cell-phone users take advantage of the limitless minutes ... engineers have developed a device that can significantly improve ... battery power. , ,"When you've been talking on a ... how hot it gets," notes Zhenqiang "Jack" Ma, an ...
... laboratory" of teaching technology will use Mediasite Live, ... Foundry, Inc. , to automatically record, distribute, archive ... , ,The laboratory, termed the Digital Union, is ... making informed investment decisions across Ohio's flagship campus ...
Cached Biology Technology:WTN Visions: Convergence is changing business 2WTN Visions: Convergence is changing business 3UW-Madison technology to advance cell phones 2UW-Madison technology to advance cell phones 3Ohio State's educational tech lab to use Sonic Foundry system 2
Anti-MMP-14, catalytic domain, clone LEM-2/15.8 Immunogen: Synthetic peptide: amino acid sequence 218-233 within the catalytic domain Available Date: 38579...
Anti-MMP-14, catalytic domain, clone LEM-2/15.8 Immunogen: Synthetic peptide: amino acid sequence 218-233 within the catalytic domain Available Date: 38579...
Anti-MMP-19 (RASI), carboxy terminal region; rabbit host...
Rabbit anti MMP-13, Hinge Region MMP-13 Hinge Region...
Biology Products: