Navigation Links
Mating is the kiss of death for certain female worms
Date:12/19/2013

The presence of male sperm and seminal fluid causes female worms to shrivel and die after giving birth, Princeton University researchers reported this week in the journal Science. The demise of the female appears to benefit the male worm by removing her from the mating pool for other males.

The researchers found that male sperm and seminal fluid trigger pathways that cause females to dehydrate, prematurely age and die.

"Their lifespans are cut by about a third to a half," said senior author Coleen Murphy, an associate professor of molecular biology and the Lewis-Sigler Institute for Integrative Genomics.

The death of the female after she gives birth fits into a general framework of sperm competition that has been observed often in nature, said Murphy. "Males compete to have their genomes propagated, and this often occurs at the expense of the female."

Shortened female lifespans following mating have been observed before for roundworms, but the study is the first to document the body shrinkage and identify the underlying biological pathways, Murphy said.

"The fact that sex essentially kills the mothers after they have produced the males' progeny has never been reported before and is shocking to most people who hear this story for the first time, including researchers who study these worms," Murphy said.

The team found that the pathways by which the male kills the female are ones that researchers think exist for the purpose of slowing down aging during times of low nutrients.

"The males are taking these pathways and running them in reverse, causing the acceleration of aging and death," Murphy said.

The researchers discovered the effect in the Caenorhabditis elegans (C. elegans) roundworm, which is found in soil and rotting fruit and is about the size of a piece of lint. The roundworm is commonly used in research because many of its genetic pathways are similar to
'/>"/>

Contact: Catherine Zandonella
czandone@princeton.edu
Princeton University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. New method for estimating parameters may boost biological models
2. A mating dance with Popeye arms
3. Hormone-mimicking chemicals cause inter-species mating
4. Promiscuous squid fatigued after mating
5. Traumatic mating may offer fitness benefits for female sea slugs
6. Females tagged in wasp mating game
7. Female deer take control during the mating season
8. Discovery of sexual mating in Candida albicans could provide insights into infections
9. DNA reveals mating patterns of critically endangered sea turtle
10. Nitrogen has key role in estimating CO2 emissions from land use change
11. Are North Atlantic right whales mating in the Gulf of Maine?
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Mating is the kiss of death for certain female worms
(Date:9/30/2014)... report that a new class of chemical compounds ... They have also pinpointed the relevant target enzyme, ... , Researchers led by LMU,s Professor Angelika ... Universitt Mnchen have identified a class of chemicals ... fight against malignant tumors. The compound is itself ...
(Date:9/30/2014)... face a suite of perilous threats in today,s ... and climate change, fragile coral ecosystems are disappearing ... trend, some species of corals surrounding the island ... protector in their tropical environment: coral guard-crabs. New ... Smithsonian Marine Station scientist Seabird McKeon and the ...
(Date:9/29/2014)... DC September 29, 2014 -- Plants have ... bacteria help the pants extract nutrients and defend ... pathogens from contaminating fruits and vegetables. Now, scientist ... bacteria inside of seeds; thus ensuring that sprouting ... from the University of Notre Dame, presented their ...
Breaking Biology News(10 mins):Cancer therapy: Driving cancer cells to suicide 2Smithsonian scientists discover coral's best defender against an army of sea stars 2Plants prepackage beneficial microbes in their seeds 2
... Assistant Professor of Pharmacology at LSU Health Sciences Center ... $1.2 million Research Project (RO1) grant by the National ... of Health. The 5-year grant will support his research ... brain in regulating blood pressure and the development of ...
... in Spanish . The journal " Science ... August the results of a detailed research work about the ... years. The study has been carried out with the participation ... Panama., The results obtained prove that the main concentrations of ...
... amounts of data are being generated in health care, ... these massive and unstructured data sets has proven cumbersome ... and visual analytics is helping sift through such mountains ... of a picture. The Georgia Institute of Technology ...
Cached Biology News:LSUHSC's Lazartigues awarded $1.2 million grant 2Fossil and molecular evidence reveals the history of major marine biodiversity hotspots 2Grant supports emerging field of massive data analysis and visual analytics 2Grant supports emerging field of massive data analysis and visual analytics 3Grant supports emerging field of massive data analysis and visual analytics 4
(Date:10/1/2014)... Oct. 1, 2014  Discovery Laboratories, Inc. (Nasdaq: ... awarded a Phase II Small Business Innovation Research ... from the National Institute of Allergy and Infectious ... (NIH) to support the development of the Company,s ... countermeasure to mitigate acute and chronic/late-phase radiation-induced lung ...
(Date:10/1/2014)... -- Pfanstiehl has announced the launch of cGMP-produced, ... USA under ICH Q7 ... playing a key role in protein glycosylation.  Now, ... media supplementation with mannose can improve overall culture ... Dr. Christopher Wilcox , VP, Business Development ...
(Date:10/1/2014)... September 30, 2014 In response ... tools to address sales, training and consumer engagement ... developed innovative mobile applications to turn their clients’ ... agency’s latest customized mobile app creations, are now ... , In partnership with Toyota, StudioPMG created a ...
(Date:10/1/2014)... October 01, 2014 TeselaGen Biotechnology ... Science Foundation to expand their bioCAD/CAM software suite, which ... modify DNA. The Small Business Innovation Research Phase II ... technology under exclusive license from the Lawrence Berkeley National ... Institute , an LBNL laboratory that develops alternative fuel ...
Breaking Biology Technology:Discovery Labs Receives SBIR Grant Valued up to $3.0 Million to Support Development of Aerosolized KL4 Surfactant to Address Radiation-Induced Lung Injury 2Discovery Labs Receives SBIR Grant Valued up to $3.0 Million to Support Development of Aerosolized KL4 Surfactant to Address Radiation-Induced Lung Injury 3Pfanstiehl Launches cGMP-produced Mannose for Cell Culture Media Optimization & Glycoprotein Biosynthesis 2Digital Agency Studio PMG Launches New Case Studies on Website 2TeselaGen Receives $750k NSF SBIR Phase II Award 2TeselaGen Receives $750k NSF SBIR Phase II Award 3
... Oct. 5 VioQuest,Pharmaceuticals (OTC Bulletin Board: VQPH), ... and,commercializing targeted cancer therapeutics, announced today that it ... 11, 2007 at 2:00 p.m.,Pacific Time at the ... San Francisco.,Daniel Greenleaf, VioQuest,s president and CEO, is ...
... 5 Iomai Corporation,(Nasdaq: IOMI ) today announced ... officer, will present at the Natixis,Bleichroeder Hidden Gems Conference ... presentation will begin at 2:45 p.m. Eastern Time in ... To access the live audio webcast or the subsequent ...
... Sigma-Aldrich Corporation,(Nasdaq: SIAL ), will hold ... on Wednesday, October 24, 2007, at 11:00 a.m. ... is being webcast by Thomson/CCBN and can be ... . The webcast is also being distributed ...
Cached Biology Technology:VioQuest Pharmaceuticals to Present at BIO InvestorForum in San Francisco 2VioQuest Pharmaceuticals to Present at BIO InvestorForum in San Francisco 3Sigma-Aldrich Corporation's 3rd Quarter 2007 Earnings Conference Call 2
Rabbit polyclonal to ECSIT ( Abpromise for all tested applications). entrezGeneID: 51295 SwissProtID: Q96HQ7...
HAMP Immunogen: HAMP (AAH20612, 25 a.a. ~ 85 a.a) full length recombinant protein with GST tag. Storage: -20 C, Avoid Freeze/Thaw Cycles *Available for distribution in the US only...
Dual adapter for phosphotyrosine and 3-phosphotyrosine and 3-phosphoinositide...
p38 MAP Kinase gamma Antibody Shipping Temperature: HOT Storage Temperature: -20C...
Biology Products: