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
University of Toronto

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:

(Date:4/17/2017)... NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or the "Company"), ... Report on Form 10-K on Thursday April 13, 2017 with the ... The ... section of the Company,s website at http://www.nxt-id.com  under "SEC Filings," ... 2016 Year Highlights: Acquisition of ...
(Date:4/11/2017)... April 11, 2017 Crossmatch®, a globally-recognized ... solutions, today announced that it has been awarded ... Projects Activity (IARPA) to develop next-generation Presentation Attack ... "Innovation has been a driving force within ... will allow us to innovate and develop new ...
(Date:4/11/2017)... , April 11, 2017 NXT-ID, ... security technology company, announces the appointment of independent Directors Mr. ... to its Board of Directors, furthering the company,s corporate ... ... NXT-ID, we look forward to their guidance and benefiting from ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... 12, 2017 , ... The Blavatnik Family Foundation and the ... of the 2017 Blavatnik Regional Awards for Young Scientists. Established in 2007, ... the New York Academy of Sciences to honor the excellence of outstanding postdoctoral ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... Rosalind™, the first-ever genomics analysis platform specifically designed for life science researchers ... honor of pioneering researcher Rosalind Franklin, who made a major contribution to ...
(Date:10/11/2017)... ... October 11, 2017 , ... Proscia ... be hosting a Webinar titled, “Pathology is going digital. Is your lab ready?” ... pathology adoption best practices and how Proscia improves lab economics and realizes an ...
(Date:10/11/2017)... ... October 11, 2017 , ... Singh Biotechnology ... drug designation to SBT-100, its novel anti-STAT3 (Signal Transducer and Activator of Transcription ... is able to cross the cell membrane and bind intracellular STAT3 and inhibit ...
Breaking Biology Technology:
Cached News: