HOME >> BIOLOGY >> NEWS
Battle of the sexes leads to evolutionary arms race

Boxes of chocolate and Valentine cards won't get you far in the animal world where courting is considerably tougher than it is for humans. New research by evolutionary biologists from the University of Toronto and the University of Uppsala in Sweden confirm earlier beliefs that an evolutionary "battle of the sexes" can lead to a biological arms race between males and females.

The study, to be published in the Feb. 14 issue of Nature, unveils for the first time a sexual "arms race" in a group of insects - the water strider. Professors Locke Rowe of the University of Toronto's zoology department and Goran Arnqvist of the University of Uppsala in Sweden offer a new and quite different look at the fundamental conflicts of interest between the sexes.

"Males and females of most animal species look and behave very differently," says Rowe. "Males are often provided with various distinct traits like the bright colours of a peacock's feathers, for example. Females, however, aren't easily impressed. These elaborate traits in males have traditionally been explained as evolutionary consequences of females searching for good fathers for their offspring."

The key to their research lies in the fact that males and females play very different roles in reproduction. What is best for one sex is rarely best for the other, leading to a range of sexual conflicts, says Rowe. "Males of most animal species benefit from mating often with as many partners as possible while females, who are already mated, lose from mating too much. Males, therefore, seek to 'convince' females to mate while females evolve resistance measures to foil the male's mating attempts."

The traits which males use in these conflicts vary, ranging from elaborate ornaments to grasping structures that make it difficult for females to escape. The result of such sexual conflict is, in theory, an "arms race" between the sexes whereby male persistence is matched by female resistance. Such arms rac
'"/>

Contact: Janet Wong
jf.wong@utoronto.ca
416-978-6974
University of Toronto
13-Feb-2002


Page: 1 2

Related biology news :

1. Battle between bubbles might have started evolution
2. AAAS hosts Battle of the Brains to choose area student for international competition
3. Battle of the DNA bulge may help thwart cancer
4. Battle lasers
5. System failure to blame for Walkerton, North Battleford outbreaks, says U of T study
6. Researchers working to devise plan for Palo Alto Battlefield Restoration
7. Battle of the sexes leads to a biological arms race
8. Battle to save last stronghold of the red squirrel
9. Baby Dolphin "Little Orphan Annie" Loses Battle For Her Life
10. Late Blight Battle Goes Online, Marking 150 Year Struggle Since Irish Potato Famine
11. Study explains spatial orientation differences between sexes

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Battle the sexes leads evolutionary arms race

(Date:6/24/2015)... 24, 2015  Synaptics Inc. (NASDAQ: SYNA ... today announced that Sharp has selected its industry-leading ... for its latest flagship smartphone device, the AQUOS ... million shipments of its fingerprint ID sensor technology, ... scalability and leadership in the biometrics market through ...
(Date:6/23/2015)... 2015   Valencell, a leader in ... a recent study that illustrates its PerformTek biometric ... activity. In a study conducted at Valencell,s Biometric ... the Apple Watch against a chest strap – ... activity. The study demonstrated that Valencell,s biometric technology ...
(Date:6/17/2015)... and HILDEN, Germany , June 17, 2015 ... Frankfurt Prime Standard: QIA) today launched new Investigator ® ... laboratories in the United States . The ... analyze multiple key genomic markers (short tandem repeats or STRs) ... Sensor to evaluate the quality of DNA in each sample, ...
Breaking Biology News(10 mins):Synaptics Brings Natural ID Technology to Sharp's Newest Flagship Smartphone 2Valencell Delivers Breakthrough Heart Rate Accuracy on the Wrist 2Valencell Delivers Breakthrough Heart Rate Accuracy on the Wrist 3QIAGEN Launches New Genetic Fingerprinting Kits for U.S. Forensic Labs 2QIAGEN Launches New Genetic Fingerprinting Kits for U.S. Forensic Labs 3QIAGEN Launches New Genetic Fingerprinting Kits for U.S. Forensic Labs 4QIAGEN Launches New Genetic Fingerprinting Kits for U.S. Forensic Labs 5
(Date:7/3/2015)... , July 3, 2015 /PRNewswire/ ... hakea verkossa osoitteessa  http://www.openinnovationinscience.at ... Innovation in Science" -jatkokoulutusohjelmaan 22.7.2015 ... Gesellschaftin (LBG) tekemän, kansainvälisiä tutkijoita ... terveystieteiden kaksi suurinta haastetta ovat ...
(Date:7/3/2015)... NEW YORK , July 3, 2015  Pomerantz ... filed against Puma Biotechnology, Inc. ("Puma" or the "Company")(NYSE: ... class action, filed in United States District Court, Central ... under 15-cv-00865, is on behalf of a class consisting ... between July 23, 2014 and May 13, 2015 inclusive ...
(Date:7/2/2015)... GLASGOW, Scotland , July 2, 2015 ...   Bio-tech procurement company Amici Procurement has ... IOM) to help it move to Office 365. ... Procurement provides small to medium-sized companies in the ... with all aspects of the purchasing cycle to help ...
(Date:7/1/2015)... , July 1, 2015   Decision ... frequently cited advantages of Otezla are its oral ... profile, as reported by surveyed rheumatologists. Otezla was ... for the treatment of active psoriatic arthritis in ... current standard of care includes conventional oral treatments ...
Breaking Biology Technology:Maailman ensimmäinen tiedemiesten koulutukseen suunniteltu avoimen innovaation ohjelma käynnistyy 2Maailman ensimmäinen tiedemiesten koulutukseen suunniteltu avoimen innovaation ohjelma käynnistyy 3SHAREHOLDER ALERT: Pomerantz Law Firm Reminds Shareholders with Losses on their Investment in Puma Biotechnology, Inc. of Class Action Lawsuit and Upcoming Deadline - PBYI 2SHAREHOLDER ALERT: Pomerantz Law Firm Reminds Shareholders with Losses on their Investment in Puma Biotechnology, Inc. of Class Action Lawsuit and Upcoming Deadline - PBYI 3SHAREHOLDER ALERT: Pomerantz Law Firm Reminds Shareholders with Losses on their Investment in Puma Biotechnology, Inc. of Class Action Lawsuit and Upcoming Deadline - PBYI 4Biotech Procurement Company Moves to Office 365 with iomart 2Surveyed Rheumatologists Report That Otezla's Oral Administration is its Single Greatest Advantage Over Currently Available Treatment Options 2Surveyed Rheumatologists Report That Otezla's Oral Administration is its Single Greatest Advantage Over Currently Available Treatment Options 3
Cached News: