Navigation Links
Study finds surprising new branches on arthropod family tree
Date:2/10/2010

iops, a 2-inch crustacean that looks like a cross between a horseshoe crab and a mayfly, had also been thought of as an early crustacean, but it too was shown to have a relatively modern origin in the new analysis, Cunningham said.

"Taxonomists have been arguing about these things for decades, and people kept coming at this with one data set after another," Cunningham said. This latest study has created a fuller picture of the arthropod family tree by using more species and more genes, he said.

Beginning in 2001, Jeffrey Shultz, an associate professor of entomology at Maryland, led the efforts to figure out which species needed to be sequenced for a robust comparison, and then to round up suitable specimens of each. The study included nematodes, scorpions, dragonflies, barnacles, copepods and centipedes.

Remipedes, one of the two species of Xenocarida in the study, had to be fetched from partially submerged limestone caves in the Yucatan Peninsula and preserved just so. Bitty creatures called mystacocarids that live between grains of sand were captured by the Natural History Museum's Regina Wetzer, using a microscope on a Massachusetts beach.

Once assembled, the 75 species were then stripped down to their DNA for a painstaking search to find genetic sequences that would appear across all arthropods, enabling statistical comparisons.

The lab of Jerome Regier at Maryland's Center for Biosystems Research combed through 2,500 different combinations of PCR primers to find 62 protein-coding gene sequences that could be compared across all 75 species. Regier was an early proponent of using protein coding genes to sort out the arthropod tree, while most other researchers were using relatively less complex analyses from the DNA found in ribosomes and mitochondria.

The researchers ran four different statistical approaches, including two new ones invented at Maryland, "and they all came up with the same answer," Cunningham
'/>"/>

Contact: Karl Leif Bates
karl.bates@duke.edu
919-681-8054
Duke University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. New genome sequence will aid study of important food, fuel crops
2. New UC Davis study: Climate tipping points may arrive without warning, says top forecaster
3. Multicenter study finds little effect of soy isoflavones on bone loss in postmenopausal women
4. New study examines the impact on children of food product placements in the movies
5. Comprehensive study using bioinformatics predicts the molecular causes of many genetic diseases
6. Study reveals new details on the dangers of third-hand smoke
7. UC Davis study confirms link between advanced maternal age and autism
8. NTU researchers complete the worlds first in-depth study of the malaria parasite genome
9. Study reveals potential evolutionary role for same-sex attraction
10. Study shows male erectile dysfunction drug enhances fetal growth in female sheep
11. LSTM begins £0.5 million malaria study in Burkina Faso
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/11/2015)... , May 11, 2015  Through a well-rounded UAS delegation ... had a strong showing at AUVSI,s Unmanned 2015 conference ... of Ohio,s UAS industry met with ... from all points along the UAS ecosystem. ... (DDC) Vice President for Aerospace Rich Knoll . "If ...
(Date:5/10/2015)... Fingerprint Cards (FPC) has received an ... the distributor World Peace Industrial Group (WPI), part of WPG ... Asia . Deliveries are planned to take place during ... manufacturers in China . The order value ... of + 1 000 MSEK for 2015.   Jörgen ...
(Date:5/7/2015)... 7, 2015 Fingerprint Cards ... and FPC1035, FPC,s smallest touch fingerprint sensors to ... considered for integration on the backside of the ... increased possibilities to integrate touch fingerprint sensors in ... improves possibilities for module manufacturers to customize the ...
Breaking Biology News(10 mins):Ohio Flies High at Unmanned '15, Sets Stage for Ohio UAS Conference 2Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 235 Million 2FPC Introduces its Smallest Touch Fingerprint Sensors to Date 2
... high-throughput cloning methodologies, and automation, a group at ... Brizuela (Harvard Medical School lecturer on biological chemistry ... the sequence information of all identified human kinase ... this gene class. Their work is described in ...
... five others may be the way to go when planning ... a Penn State Erie biologist is monitoring the salinity of ... insects. , "I am currently doing research in wetlands that ... replace all the ones that were destroyed by the new ...
... that fertilizer runoff from big farms can trigger sudden ... and even producing "dead zones" in the sea. Now ... first direct evidence linking large-scale coastal farming to massive ... March 10 issue of the journal Nature, the authors ...
Cached Biology News:Road salt affects mitigation wetlands 2Oceans more vulnerable to agricultural runoff than previously thought, study finds 2Oceans more vulnerable to agricultural runoff than previously thought, study finds 3Oceans more vulnerable to agricultural runoff than previously thought, study finds 4
(Date:6/1/2015)... New York, NY (PRWEB) June 02, 2015 ... informative views on health care, Jack Uldrich has ... pharmaceutical firm in New York today. He will ... , Uldrich has delivered presentations to ... American Academies of Audiology and Neurology, Alcetel-Lucent/Verizon Forum ...
(Date:6/1/2015)... June 1, 2015 GenomeDx Biosciences ... analysis platform, successfully classified various subtypes of ... of certain biomarkers, including one type associated ... unique genomic signature has potential as a ... chemotherapy in patients with muscle-invasive bladder cancers ...
(Date:6/1/2015)... N.J. , June 1, 2015  The Val ... a national innovative science curriculum for high school students ... the 16 th annual LIFE Event (LPGA Pros ... Mountain Ridge Country Club in West Caldwell, ... the LPGA,s biggest stars raised more than $500,000 on ...
(Date:6/1/2015)... 2015  Neogen Corporation (NASDAQ: NEOG ) announced today ... a leading commercial food testing laboratory based in southwest ... serve as a base for the company,s new operations in ... Test House was incorporated in 1990, and its business ... and water quality testing for major hotels and restaurants in ...
Breaking Biology Technology:Futurist Jack Uldrich to Address the Future of Pharmaceuticals 2GenomeDx's Decipher Platform Validates Genomic Signature that may Predict Resistance to Chemotherapy in Bladder Cancer Patients in Study Presented at ASCO 2015 Annual Meeting 2GenomeDx's Decipher Platform Validates Genomic Signature that may Predict Resistance to Chemotherapy in Bladder Cancer Patients in Study Presented at ASCO 2015 Annual Meeting 3GenomeDx's Decipher Platform Validates Genomic Signature that may Predict Resistance to Chemotherapy in Bladder Cancer Patients in Study Presented at ASCO 2015 Annual Meeting 4Val Skinner Foundation Announces Partnership With Discovery Education 2Neogen acquires India food safety company 2
... InSet Technologies, an emerging,leader in the development of ... announced today the addition of Jon Tremmel to ... Inc. after nearly 30 years of service,Jon held ... of the,Neurological Division, President of the Physio-Control Division, ...
... and one silver award for ... in healthcare marketing, WEST CONSHOHOCKEN, Pa., May 9 ... the healthcare,industry, announced today it received two gold and ... talented healthcare marketing,professionals for outstanding excellence in advertising. The ...
... Biodel Inc. (Nasdaq:,BIOD) today reported financial results for its second ... was $9.6 million or $0.43 per share., "We remain ... CEO and Chairman of Biodel. "The last patient visits for,both ... July. We,expect to announce top line data late in the ...
Cached Biology Technology:InSet Technologies Appoints Jon Tremmel to its Board of Directors 2Cadient Group Brings Home the Gold at 2008 Aster Awards 2Biodel Inc. Reports Second Quarter Fiscal Year 2008 Financial Results 2Biodel Inc. Reports Second Quarter Fiscal Year 2008 Financial Results 3Biodel Inc. Reports Second Quarter Fiscal Year 2008 Financial Results 4Biodel Inc. Reports Second Quarter Fiscal Year 2008 Financial Results 5Biodel Inc. Reports Second Quarter Fiscal Year 2008 Financial Results 6Biodel Inc. Reports Second Quarter Fiscal Year 2008 Financial Results 7Biodel Inc. Reports Second Quarter Fiscal Year 2008 Financial Results 8Biodel Inc. Reports Second Quarter Fiscal Year 2008 Financial Results 9
... pET Host Strain Competent Cell Sets ... vector/host strain combinations The most ... E. coli is to use ... be prepared in the laboratory, greater efficiency, ...
The Saturn 2200 answers your GC/MS questions with the CP-3800 GC and the 2000 Series Ion Trap MS! These components create a platform for the worlds most versatile GC and flexible MS. Both deliver une...
... uses a simplified procedure and streamlines the ... kit is based on the three step ... sodium bisulfite where cytosine is converted into ... in-column desulphonation reaction eliminates several precipitation steps ...
... are intended for laboratory research use only. ... neutral buffered formalin and embedded in paraffin. ... by certified pathologists. Tissue cores were ... into a new recipient paraffin block, in ...
Biology Products: