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:10/16/2014)... new synthesis of recent research findings to inform their ... two states. , The Ecology and Management of ... Synthesis of the Relevant Biophysical Science and Implications for ... the U.S. Forest Service,s Pacific Northwest Research Station, is ... a synthesis of the large body of scientific information ...
(Date:10/16/2014)... NXT-ID, Inc. (NASDAQ: NXTD ... company focused on the growing mobile commerce market announces ... the Smart Wallet, at the 13 th annual ... global conference on the intersection of technology and the ... , founder and publisher of the Strategic News Service™, ...
(Date:10/15/2014)... Ebola virus is spreading rapidly and to an unexpected ... in the past and the virus shows a new ... recorded before. For this reason, the German National Academy ... Science and Engineering, and the Union of the German ... on the Ebola epidemic today. , In the statement ...
Breaking Biology News(10 mins):New report synthesizes best available science on management of moist mixed-conifer forests 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 3Academies call for consequences from the Ebola virus epidemic 2Academies call for consequences from the Ebola virus epidemic 3Academies call for consequences from the Ebola virus epidemic 4Academies call for consequences from the Ebola virus epidemic 5
... the extinction of the Javan rhinoceros in Vietnam pushes the ... creatures living in Indonesia., "We still have a chance to ... to determine the profile of the remaining group," he says., ... demise of the Javan rhinoceros population living in Vietnam by ...
... testing a way to determine the status of fetal ... and their babies. Supported by a two-year, $418,000 ... of Child Health and Human Development of the National ... cells for genetic study within the first two months ...
... on managing flows in streams and rivers or on ... Instead, watersheds need a good mix of steep, cold-running ... keep options open for salmon adapted to reproduce better ... ,Preserving that sort of varied landscape serves not just ...
Cached Biology News:Wayne State researchers working to improve genetic analysis, disorder detection 2Bears, scavengers count on all-you-can-eat salmon buffet lasting for months 2Bears, scavengers count on all-you-can-eat salmon buffet lasting for months 3
(Date:10/22/2014)... 21, 2014 The Americas Inorganic ... refrigerants market in Americas with analysis and forecast ... the Americas Inorganic Refrigerants Market report, to get ... also provides a glimpse of the segmentation in ... by various tables and figures. , ...
(Date:10/22/2014)... October 22, 2014 WriteResult, LLC ... – has been working with a team of researchers ... Haven Farms Community Farming Collaborative to provide electronic questionnaire ... The study, which started in May, aims to ... provides participants weekly exposure to and participation in urban ...
(Date:10/22/2014)... October 22, 2014 According to ... by Service Type (Consulting, Integration, Deployment & Support), ... Deployment Model (Public, Private, Others (Hybrid & Community)) ... defines and segments the Cloud Professional Services Market ... forecasting of revenues. It also identifies the drivers ...
(Date:10/22/2014)... , Oct. 22, 2014 Research ... "Organic Electronics Market by Material, by Application, Geography - ... to their offering. Organic electronics, also ... branch of material science which deals with small conductive ... organic because small molecules and polymers are carbon based, ...
Breaking Biology Technology:The Americas Inorganic Refrigerants Market is estimated to grow to $71.6 million by 2018 - New Report by MicroMarket Monitor 2The Americas Inorganic Refrigerants Market is estimated to grow to $71.6 million by 2018 - New Report by MicroMarket Monitor 3myPROpad™ Topic of Panel Discussion at the Yale Food Systems Symposium 2myPROpad™ Topic of Panel Discussion at the Yale Food Systems Symposium 3Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 2Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 3Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 4Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 5Global Organic Electronics (Semiconductor, Conductive, Dielectric and Substrate) Market - Analysis and Forecast (2014 - 2020) 2Global Organic Electronics (Semiconductor, Conductive, Dielectric and Substrate) Market - Analysis and Forecast (2014 - 2020) 3
... SANTA CLARA, Calif., March 6 Finesse Solutions, LLC, ... solutions for life sciences process applications, announced the technical ... measurement system, at Interphex in New York on March ... single-use solution consisting of a disposable sheath, an optical ...
... Therapeutics, Inc. (CTI) (Nasdaq and MTA: CTIC) announced today ... Stock Market indicating that the NASDAQ Listing Qualifications Panel ... common stock on The NASDAQ Capital Market, subject to ... the Company demonstrate compliance with all applicable standards for ...
... Calif., March 6 Irvine Scientific, a leading medical ... to announce the addition of IS CHO-CD XP(TM) Culture ... CHO-CD XP(TM) Culture System is a set of chemically-defined*, ... technology to deliver robust cell growth and production for ...
Cached Biology Technology:Finesse Demonstrates TruFluor(TM) pH, a Single-Use Optical pH Sensor and Transmitter 2Cell Therapeutics Announces Receipt of NASDAQ Listing Update 2Cell Therapeutics Announces Receipt of NASDAQ Listing Update 3Irvine Scientific Launches IS CHO-CD XP(TM) 2
... Designed specifically for high efficiency ... Low toxicity reagent proven to ... range of cell types. Results ... 95% of target gene expression. ...
... a wide range of hands-on techniques that ... in all areas of protein chemistry and ... preface illustrates just how valuable this book ... chapters introduce the theoretical background of a ...
... easy-to-use siRNA transfection reagent that has been ... a variety of cell lines. jetSI-ENDO is ... straightforward protocol. High levels of gene silencing ... of 20 to 100 nM of siRNA ...
... reduced space requirements of the MassARRAY ... analysis technology affordable .The benchtop system ... SEQUENOM's applications and assays, including: ,, ... Gene Expression Analysis (QGE) , Quantitative ...
Biology Products: