Navigation Links
DDT-resistant insects have additional genetic advantage that helps resistance spread

pesticide taken out of use and DDT-susceptible insects would regain dominance.

"Although this assumption is widespread, data to support this contention is actually thin," said Professor ffrench-Constant. He believes previous work may not have looked at genetically related strains and that 'costs' may therefore be associated with the differing genetic backgrounds of insects examined, and not the resistance genes themselves.

"Experimenters looking at genetic fitness in resistant insects often only look at single character traits such as number of eggs laid, and often compare resistant and susceptible lines that are genetically unrelated.

"Differences in fitness therefore often correspond to differences in genetic background rather and are not due to the resistance gene itself."

Using DDT-resistant fruit flies (Drosophila melanogaster) in state-of-the-art controlled temperature rooms provided by the Wolfson Trust, Caroline McCart, a PhD student in the Department of Biology and Biochemistry at the University, went to great lengths to make sure that DDT resistant and susceptible strains differed only by the resistance gene itself.

Using antibiotics they also 'cured' the flies of the microbes that are known to affect their ability to reproduce and could affect the results.

In order to assess the genetic fitness of both the resistant and susceptible strains, the researchers monitored the survival and development rate of all life stages of their offspring.

They found that DDT resistance in fruit flies not only carries no cost but in fact confers an advantage when inherited through the female.

This discovery comes at a time when a number of developing nations, including South Africa, are considering re-introducing (or continuing the use of) DDT in an attempt to reduce the major health problems caused by malaria.

Use of DDT (Dichloro-diphenyl-trichloroethane) increased enormously on a worldwide basis afte
'"/>

Source:University of Bath


Page: 1 2 3

Related biology news :

1. Researchers find how protein allows insects to detect and respond to pheromones
2. Experiments provide proof of how traveling in groups protects insects
3. Experiments provide proof of how traveling in groups protects insects
4. Why do insects stop breathing? To avoid damage from too much oxygen, say researchers
5. K-State researchers study insects immune system
6. K-State researchers study gene regulation in insects
7. Gene needed for butterfly transformation also key for insects like grasshoppers
8. Value of services performed by insects tops $57 billion in US
9. Giant insects might reign if only there was more oxygen in the air
10. Why do insects like to eat some plants more than others?
11. Its not all genetic: Common epigenetic problem doubles cancer risk in mice
Post Your Comments:
(Date:5/8/2015)... , May 8, 2015 Synaptics Inc. (NASDAQ: ... today announced that members of the executive management team will ... 43rd Annual Technology, Media and Telecom Conference Date: May ... in Boston, MA Cowen ... 2015 Time: 2:45pm ET Location: The New York Palace Hotel, ...
(Date:5/5/2015)... NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or ... mobile commerce market, reminds investors and media that  Mr. ...  at CARTES SECURE CONNEXIONS AMERICA 2015, held in ... The three-day conference is organized into a series of nine ... Global Fraud: Where is the Trust in Cyberspace? ...
(Date:4/27/2015)... , Apr. 27, 2015 Profile Solutions, ... control and security systems is pleased to announce that ... as a consultant and member of its scientific advisory ... widely known as a thought leader in technology-enhanced learning ... Technology Group, and has published studies and books focused ...
Breaking Biology News(10 mins):Synaptics to Present at Upcoming Investor Conferences 2NXT-ID, Inc.'s CTO, David Tunnell, Presents at CARTES SECURE CONNEXIONS AMERICA 2015 Today in Washington DC. 2NXT-ID, Inc.'s CTO, David Tunnell, Presents at CARTES SECURE CONNEXIONS AMERICA 2015 Today in Washington DC. 3Profile Solutions Names Medicinal Cannabis, Agriculture and Technology Expert Dr. Gerry Bedore to its Scientific Advisory Board 2Profile Solutions Names Medicinal Cannabis, Agriculture and Technology Expert Dr. Gerry Bedore to its Scientific Advisory Board 3Profile Solutions Names Medicinal Cannabis, Agriculture and Technology Expert Dr. Gerry Bedore to its Scientific Advisory Board 4
... Ill. (June 18, 2012) Seeking to solve some ... source facilities at national research laboratories in the United ... Canadian Light Source and the Advanced Photon Source (APS) ... Laboratory agreed in January 2012 to a Partner User ...
... , PHILADELPHIA Healthy humans harbor an enormous and ... within their intestines. These microbial partners provide beneficial aid ... the development of a healthy immune system. In a ... , David Artis, PhD, associate professor of Microbiology, and ...
... to the simple sponge to find clues about the evolution ... a mechanism that coordinates the expression of genes that lead ... of the animal world may not be so distant after ... network," are published in the Proceedings of the National ...
Cached Biology News:Advanced Photon Source and Canadian Light Source strengthen ties 2Brothers in arms: Commensal bacteria help fight viruses 2Clues to nervous system evolution found in nerve-less sponge 2
(Date:5/28/2015)... DUBLIN , May 27, 2015 /PRNewswire/ ... announced the addition of Jain PharmaBiotech,s new ... to their offering. An ... and biotechnology industries is anticipated. Nanotechnology will ... development - from formulations for optimal delivery ...
(Date:5/28/2015)... The Academy of Model Aeronautics Foundation will be celebrating the ... National Model Aviation Day was created to celebrate the hobby ... the general public. , The AMA has encouraged all of ... by hosting events in their own communities. More than 80 ... View our online event map to find an event ...
(Date:5/28/2015)... 2015 BioNorth Texas (BioNorthTX), an ... the life sciences industry in northern region of ... at The Foundry in Dallas on April 27, ... together a broad spectrum of biotech professionals from ... early successes in partnering with key life sciences ...
(Date:5/28/2015)... , May 28, 2015  GenVec, Inc. (Nasdaq: ... Douglas J. Swirsky , will present a company ... 11 a.m. EDT on Thursday, June 4, 2015. ... Swirsky,s presentation will be available at the following link:  ... on GenVec,s website.  To access, visit www.genvec.com , ...
Breaking Biology Technology:Global Nanobiotechnology Market 2015-2024 - Applications, Markets and Companies 2Global Nanobiotechnology Market 2015-2024 - Applications, Markets and Companies 3Model flying pilots celebrate the Academy of Model Aeronautics Foundation’s Third Annual National Model Aviation Day 2BioNorthTX Holds Inaugural Board of Directors Meeting 2BioNorthTX Holds Inaugural Board of Directors Meeting 3GenVec To Present At The Jefferies Healthcare Conference 2
... of... -- CAMBRIDGE, Massachusetts, August 26, 2010 ... ... ... first_result; // Results are keyed by longUrl, so we need to grab the first one. for ...
... New York State Department of Health has licensed Genelex Corporation,s ... state. The issued Clinical Laboratory Permit is for DNA testing ... 50 percent of the most commonly prescribed medicines. Research shows ... the genetic coding for these enzymes, greatly increasing their risk ...
... CFO -- LONDON, August 26, 2010 ... ... var shortURL = ... so we need to grab the first one. for (var r in data.results) { first_result = data.results[r]; ...
Cached Biology Technology:Shire Announces European Approval of VPRIV(R) (velaglucerase alfa) for the Treatment of Type 1 Gaucher Disease 2Shire Announces European Approval of VPRIV(R) (velaglucerase alfa) for the Treatment of Type 1 Gaucher Disease 3Shire Announces European Approval of VPRIV(R) (velaglucerase alfa) for the Treatment of Type 1 Gaucher Disease 4Shire Announces European Approval of VPRIV(R) (velaglucerase alfa) for the Treatment of Type 1 Gaucher Disease 5Shire Announces European Approval of VPRIV(R) (velaglucerase alfa) for the Treatment of Type 1 Gaucher Disease 6Shire Announces European Approval of VPRIV(R) (velaglucerase alfa) for the Treatment of Type 1 Gaucher Disease 7Shire Announces European Approval of VPRIV(R) (velaglucerase alfa) for the Treatment of Type 1 Gaucher Disease 8Shire Announces European Approval of VPRIV(R) (velaglucerase alfa) for the Treatment of Type 1 Gaucher Disease 9New York State Licenses Personalized Prescribing DNA Tests 2Hikma - Half Year Results Interviews With CEO and CFO 2Hikma - Half Year Results Interviews With CEO and CFO 3Hikma - Half Year Results Interviews With CEO and CFO 4Hikma - Half Year Results Interviews With CEO and CFO 5
... syringe pump series combines Harvard Apparatuss best pump ... a wide range of configuration options. A lookup ... of syringes from all the major manufacturers. A ... the pertinent information from across the lab. All ...
... number is a new product number, created ... showing no availability yet, please order under ... customer service for assistance. Feature: ... surface area 21 cm 2 D ...
... microscopy is the ultimate tool for investigating ... Its applications previously have been limited at ... optics do not transmit in the deep ... fluorescence spectroscopy, introduces a filter-based confocal system ...
... using many of the automation concepts from ... requirements are similar to those for HTS: ... 24 or 48 wells with well volumes ... the number of wells has increased to ...
Biology Products: