Battle of the sexes leads to a biological arms race

Boxes of chocolate and Valentine cards wont get you far in the animal world, where courting is considerably tougher. New research confirms earlier beliefs: an evolutionary battle of the sexes can lead to a biological arms race between males and females.

We all know that males and females of most animal species look and behave very differently. Males are, for example, often provided with various weapons, bright colours or other ornaments. Females are, however, not easily impressed, and such differences between males and females have traditionally been explained by females search for good fathers for their offspring. A new and quite different explanation is instead based on different and fundamental conflicts of interest between the sexes.

Males and females play different roles in reproduction. What is best for one sex is therefore rarely best for the other. Such differences lead to a range of different sexual conflicts. For example, males of most animal species benefit from mating often with as many partners as possible, while females who are already mated instead stand to loose from mating with too many males. Males should thus seek to convince females to mate, while females should evolve resistance to males mating attempts. The traits which males may use in such conflicts may be of varying kinds, ranging from elaborate ornaments to mate grasping adaptations which makes it difficult for females to escape persistent males.

The result of such sexual conflict is in theory an arms race between the sexes, where male persistence will be matched by female resistance. Such arms races are, however, very difficult to study. The fact that male and female adaptations counterbalance, means that the underlying conflicts will often remain hidden. Both sexes may be running frantically, in an evolutionary sense, but their interactions may remain at a standstill.

New research conducted by Gran Arnqvist at the University of Uppsala, Sweden, and Locke

Contact: Gran Arnqvist
Uppsala University

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 evolutionary 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:8/3/2020)... ... 2020 , ... Accumen Inc. is helping healthcare get better, ... Solutions, to provide COVID-19 saliva testing kits nationally. , “Accumen has been ... 10 years. Early in the COVID-19 crisis, we identified supply chain gaps and ...
(Date:7/18/2020)... ... ... Commercial launch readiness is a critical stage in a product life cycle. While ... global economic downturn will only increase price pressures overall for the industry. The era ... from every product launch is critical. However, history shows that only a third of ...
(Date:7/2/2020)... ... July 02, 2020 , ... ... announced a publication detailing the use of its revolutionary NEXTGENPCR endpoint thermocycler ... (RT-PCR) in 16 minutes. The article, titled "Ultra-fast one-step RT-PCR protocol for ...
Breaking Biology News(10 mins):
(Date:7/18/2020)... ... July 16, 2020 , ... After research model surgery and catheter implantation, the ... is only the beginning of a successful study, while protecting and accessing the catheter ... Global Head of Surgery from Envigo in a live webinar ...
(Date:7/10/2020)... ... July 09, 2020 , ... PathSensors Inc., ... has expanded the company’s exclusive license to include clinical applications for CANARY™ ... market, focusing initially on the SARS-CoV-2 biosensor. CANARY’s™ fast and highly ...
(Date:7/1/2020)... ... 29, 2020 , ... MedShift , a leading medical ... many obstacles created as a result of COVID-19. As a provider at the ... practices and medical manufacturers by expanding access to device offerings, technology services, and ...
(Date:6/28/2020)... HILL, Conn. (PRWEB) , ... June 25, 2020 ... ... company formed to advance photodynamic therapy for treating cancer, today announced the company ... New York (“Roswell Park”). The agreement provides Lumeda globally exclusive rights to ...
Breaking Biology Technology:
Cached News: