Navigation Links
Females avoid incest by causing male relatives to leave home
Date:8/15/2007

Researchers at the University of Sheffield in the UK and Leibniz Institute for Zoo and Wildlife Research (IZW) in Berlin, Germany, have found that female hyenas avoid inbreeding with their male relatives by giving them little choice but to leave their birth group.

Animals generally avoid inbreeding because it is genetically hazardous. They can either do this by moving away from home or, like humans, by learning who their relatives are and not mating with them.

Like most mammals though, male hyenas do not contribute to the rearing of their offspring, making it highly unlikely that females know who their father is. Instead males decide to leave the group in which they were raised, resulting in a low level of inbreeding.

But until now, little was known about why the males and not the females decided to move away from home. The new research on spotted hyenas, published in Nature this week, shows that the reason most males move from their natal group is because of female mate-choice the rules females use when choosing which of the many male group members will sire their offspring.

The researchers found that young females prefer to mate with new arrivals in a group - those males born into, or who joined, the group after the female was born. Older females also apply this rule and in addition prefer males that have built friendly relationships with them for several years. These mate preferences of females mean that males have to choose groups with a high number of young females if they want to reproduce successfully.

The research showed that males usually chose groups with the highest number of young females, giving them access to many females and enabling them to sire a higher number of offspring in the long term. Most males end up dispersing because a higher number of young females usually occurs elsewhere, rather than in the group in which they were raised.

Professor Burke, from the Department of Animal and Plant Sciences at the University of Sheffield, said: This is the first time a study has shown that in mammal species the system is driven by females using very simple rules to avoid breeding incestuously.

Dr Oliver Hner from the IZW added: The results of the study were only possible because we were able to monitor the decisions made by male hyenas in all eight resident hyena groups on the floor of the Ngorongoro Crater. Through this research we could genetically determine paternity for most offspring produced in a 10-year monitoring period.


'/>"/>

Contact: Lindsey Bird
l.bird@sheffield.ac.uk
01-142-225-338
University of Sheffield
Source:Eurekalert

Related medicine news :

1. Sensitive cough suffered by females
2. 10 Million Indian Females Aborted In 20 years
3. Caffeine: Stimulates Sexual Behaviour in Females
4. Same Genes Act Differently in Males and Females
5. Male Chimpanzees find Older Females Sexy
6. Avoid sudden death by quick cooling
7. Avoid stress to have strong babies
8. How to avoid a bad hair day
9. Women on HRT should avoid alcohol
10. Damage to arteries from injury can be avoided with carbon monoxide
11. Avoid travel to Toronto - WHO
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/4/2016)... ... December 03, 2016 , ... While James Earl Jones is known for myriad ... a show called "Front Page". One of the forthcoming episodes examines mammogram techniques; a ... plummeted in large part due to early detection. Like any other disease, treatments have ...
(Date:12/4/2016)... ... December 03, 2016 , ... Penrose Senior Care Auditors® was ... Tuesday evening at the 26th Annual SMU Cox Dallas 100™ Awards Ceremony and ... Institute for Entrepreneurship. Dallas 100™, co-founded by the Caruth Institute, honors the ingenuity, ...
(Date:12/4/2016)... ... December 04, 2016 , ... Patients who wish ... take advantage of a cosmetic procedure known as Carbon Dioxide (C02) Fractional ... appearance of age spots, fine lines, uneven coloration, wrinkles, scarring, skin laxity ...
(Date:12/4/2016)... ... ... Responsible dental care hinges on regular brushing of the teeth. However, just brushing ... inspired an inventor from Las Vegas, Nev., to design the BRUSH PROPER. , ... bad techniques of brushing the teeth in order to prevent cavities," he said. "Children ...
(Date:12/2/2016)... ... December 02, 2016 , ... Lori G. Cohen and ... will speak at the American Conference Institute’s 21st Drug & Medical Device Litigation ... Lead Sponsor of the conference. , Cohen, who chairs the firm’s Pharmaceutical, Medical Device ...
Breaking Medicine News(10 mins):
(Date:12/5/2016)... OSWEGO, Ore. , Dec. 5, 2016   ... the BioInsight clinical study. The study evaluates the safety ... insertion procedure in an office setting. BioMonitor ... ® technology that is placed underneath a patient,s ... fibrillation and syncope (fainting). Atrial fibrillation is a leading ...
(Date:12/5/2016)... PITTSBURGH , Dec. 5, 2016  Wellbridge Health and ... innovative digital health solutions to Medicare and Medicaid plan members ... effort targeted at the unique needs of this group of ... on social work philosophies to provide insight into members, daily ... , ...
(Date:12/5/2016)... N.J. , Dec. 5, 2016  Daiichi ... preliminary safety and efficacy data from a phase ... MDM2 inhibitor, suggesting that DS-3032 may be a ... myeloid leukemia (AML) and high-risk myelodysplastic syndrome (MDS). ... the phase 1 study of DS-3032 were presented in ...
Breaking Medicine Technology: