Navigation Links
First finding of a metabolite in 1 sex only
Date:8/21/2007

an atom of P-31 with a signature "chemical shift," indicating the presence of a unique, unidentified phosphorus compound.

They then isolated and analyzed the phosphorus compound, identifying it as 2-aminoethyl phosphonate, an uncommon but well-documented metabolite. AEP is not known to be a hormone.

The researchers tested gill tissue from crabs harvested in six different years from the Chesapeake Bay and the gulf coast of Florida. Specimens from each region produced similar results, confirming that the presence of AEP in males and absence in females is the norm for blue crabs.

But, Kleps said, it was still not possible to rule out that the difference between the sexes was due to a difference in their diet. Fortunately, while writing the first draft of the paper, Kleps happened to read that a rare gynandromorphic blue crab -- one half male, one half female -- had been captured by Romuald Lipcius of the Virginia Institute of Marine Science at the College of William & Mary.

The rare gynandromorph is divided down the middle, with a characteristic blue male claw and a female red claw. The underside of the crab is also visibly divided into male and female halves. After the crab died, Lipcius sent Kleps gill tissue from each side for analysis. The measured levels of AEP from the male and female gills provided additional evidence that AEP is a sex-specific compound.

"Since both sides of this strange crab have, of necessity, shared a diet and environment, we had completely independent confirmation of the sex-specific nature of this metabolite," said Kleps.

"That blue crabs have this sex-specific compound may be a fluke, or it might represent a common but overlooked process in animal development," he said.


'/>"/>

Contact: Jeanne Galatzer-Levy
jgala@uic.edu
312-996-1583
University of Illinois at Chicago
Source:Eurekalert

1

GOOD

Page: 1 2

Related biology news :

1. A genes first kiss sets off that affair known as puberty
2. Timing is everything: First step in protein building revealed
3. Emory Eye Center Implants Its First Retinal Chips In Patients With Retinitis Pigmentosa
4. First atlas of key brain genes could speed research on cancer, neurological diseases
5. First-ever Compounds To Target Only Metastatic Cells Are Highly Effective Against Breast, Prostate, And Colon Cancers
6. NYCs First Rapid HIV Drug-resistant AIDS Case Prompts Call to Step Up HIV Prevention
7. First real-time view of developing neurons reveals surprises, say Stanford researchers
8. Love at first smell
9. Worlds largest rainforest drying experiment completes first phase
10. PCRM develops worlds first cruelty-free insulin assay
11. Breast-Cancer Risk Linked to Exposure to Traffic Emissions at Menarche, First Birth
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/11/2009)... growers, profits have traditionally been limited by ... growing seasons can be short. Thanks to ... are being introduced that offer growers the ... in economic bonuses for both producers and ... of blackberry called "primocane-fruiting", which bear fruit ...
(Date:12/11/2009)... available in German . , ... plant introductions than extinctions, plant communities of many ... species are occurring more frequently, whereas rare species ... biological communities that are becoming increasingly similar, but ... have led to a loss of uniqueness among ...
(Date:12/11/2009)... from 190 nations are gathered at the two-week ... about 150 distinguished guests attended an ESA-hosted side ... Essential Climate Variables,. , During the event, speakers ... observation satellites play in providing systematic global climate ... research and for managing mitigation and adaptation strategies. ...
Breaking Biology News(10 mins):New management methods extend blackberry season 2Europe's flora is becoming impoverished 2Europe's flora is becoming impoverished 3Space agencies join forces to systematically observe climate variables 2Space agencies join forces to systematically observe climate variables 3Reportlinker Adds Outsourcing Preclinical Studies to China 5707 1Reportlinker Adds Outsourcing Preclinical Studies to China 5707 2Reportlinker Adds Outsourcing Preclinical Studies to China 5707 3Reportlinker Adds Outsourcing Preclinical Studies to China 5707 4Reportlinker Adds Outsourcing Preclinical Studies to China 5707 5Reportlinker Adds Outsourcing Preclinical Studies to China 5707 6DURECT Corporation Invites You to Join its Third Quarter 2009 Earnings Conference Call 5704 1DURECT Corporation Invites You to Join its Third Quarter 2009 Earnings Conference Call 5704 2Exposure to Holocaust May Have Raised Cancer Risks 60111 1Exposure to Holocaust May Have Raised Cancer Risks 60111 2
... Oct. 2, 2007The Keck School of Medicine of the University ... from the Kenneth T. & Eileen L. Norris Foundation that ... research centers devoted to the study of epigenetics. , The ... researcha field that holds great promise in the treatment and ...
... Rochester Institute of Technology professor James Winebrake had more ... at Shenandoah National Park in Virginia has solidified into ... to identify ways to make historic sites energy efficient ... won a $350,000 grant from the National Park Service ...
... gradient greenhouse in order to study the impact of ... for studying the simultaneous effect of increased CO2 and ... by researchers from the area of Plant Biology of ... studies in this area. , These studies, financed by ...
Other Biology News:$10 million gift to support cutting-edge epigenome center at USC 2$10 million gift to support cutting-edge epigenome center at USC 3Universities partner with national parks to give historic sites energy makeovers 2A greenhouse in order to study the impact of climate change on plants 2
(Date:12/11/2009)... 11 /PRNewswire-FirstCall/ - Oncolytics Biotech Inc. (TSX:ONC, NASDAQ: ... the appointment of Dr. Alan Warrander to the ... Business Development. ,, "Dr. Warrander will be responsible ... for REOLYSIN(R)," said Dr. Brad Thompson, President and ... the design of a Phase 3 trial examining ...
(Date:12/10/2009)... Dendreon Corporation (Nasdaq: DNDN ) announced today that ... shares of its common stock at a price to ... granted to the underwriters a 30-day option to purchase ... to cover overallotments, if any. The offering is ... customary closing conditions. ,, J. P. Morgan Securities Inc. ...
(Date:12/10/2009)... Inc. (Nasdaq: ELGX ), developer of minimally ... Dan Lemaitre, former President and CEO of CoreValve, ... December 11, 2009. Endologix now has four ... D. Brown, Chairman of the Board, said, "We ... Endologix Board of Directors. He has a ...
(Date:12/10/2009)... YORK, Dec. 10 With the economy and ... Wall Street,s largest, fastest-growing small cap equity research provider, ... unique investment opportunities within the micro cap market at ... on January 11, 2010 at the Grand Hyatt Hotel ... companies are overlooked and undervalued by much of Wall ...
Breaking Biology Technology:Oncolytics Biotech(R) Inc. Appoints Senior Vice President, Global Licensing and Business Development 2Oncolytics Biotech(R) Inc. Appoints Senior Vice President, Global Licensing and Business Development 3Dendreon Announces Pricing of Common Stock Offering 2Dendreon Announces Pricing of Common Stock Offering 3Endologix Appoints Dan Lemaitre to its Board of Directors 2Technology, Biotech, Energy and Transportation Among the Industries to be Featured at Sidoti & Company's First Annual 2010 Micro Cap Conference 2
... Interactive, to Head New Division, AUSTIN, Texas, ... in marketing to customers across the entire healthcare,continuum, ... 25,independent healthcare firms, has established a full-scale digital,division., ... offer clients expanded,digital capabilities, including strategy; web design ...
... Powerful Approach to Modeling Complex ... Biological Systems for Type 2 Diabetes, ... systems,biology company focused on identifying molecular mechanisms, networks and,biomarkers ... joint collaboration with Sirtris Pharmaceuticals, Inc. (Nasdaq: SIRT ...
... Significant Accomplishment for the PLSG and the Life Sciences Industry ... ... April 30 The Pittsburgh Life Sciences,Greenhouse (PLSG), the organization ... to the region,s,life sciences enterprises, announced that the PLSG has ...
Other Biology Technology:HC&B Healthcare Launches HC&B Digital 2HC&B Healthcare Launches HC&B Digital 3Genstruct and Sirtris Pharmaceuticals Win Bio-IT World's Best Practices Award 2The Pittsburgh Life Sciences Greenhouse Tops $10M in Company Investments 2The Pittsburgh Life Sciences Greenhouse Tops $10M in Company Investments 3
Fingerprinting II Informatix cluster analysis is an optional module that adds dendrogram and phylogenetic tree construction, cluster and group significance, and congruence of techniques functions to ...
... identification and library manager ... that adds capabilities for ... identification of unknowns against ... of the same taxon ...
Fingerprinting II Informatix optional matrix types module, is an optional module that adds external similarity and distance matrix functions to the Fingerprinting II Informatix software package....
... microarrays are derived from frozen embedded tissue ... control procedures to ensure the highest quality. ... in one block, sectioned at a thickness ... slides. Sections are large (3-5 mm in ...
Biology Products: