Navigation Links
Bonobos' unusual success story
Date:1/23/2012

This release is available in German.

Mate competition by males over females is common in many animal species. During mating season male testosterone levels rise, resulting in an increase in aggressive behavior and masculine features. Male bonobos, however, invest much more into friendly relationships with females. Elevated testosterone and aggression levels would collide with this increased tendency towards forming pair-relationships.

Bonobos are among the closest living relatives of humans. Like other great apes they live in groups made up of several males and females. Contrary to other ape species however, male bonobos do not, in general, outrank female individuals and do not dominate them in mating contexts. This constellation suggests that the selection for typically masculine behavioral patterns like aggression, dominance and intrasexual competition are met with antagonistic forces: On one hand it is advantageous if a male outcompetes a fellow male. This, however, implies that there is increased aggression and an elevated level of testosterone in high-ranking males. On the other hand as dominance relations between the sexes are rather balanced in bonobos it is likely that males benefit from having friendly pair-relationships with female individuals. Studies with birds and rodents show that a tendency towards forming pair-relationships correlates with lower male aggression rates and testosterone levels.

In a current study, Martin Surbeck, Gottfried Hohmann, Tobias Deschner and colleagues of the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, found that in wild bonobos high-ranking males were more aggressive and their mating success was higher when compared to lower-ranking males. Contrary to other species in which males compete fiercely over access to females, there was no correlation between dominance status or aggression with testosterone levels. In addition, the researchers found that high-ranking males invested more often than lower-ranking group members into friendly relationships with females. This suggests that these friendly relationships between the sexes are associated with lower male testosterone levels.

"Our study suggests that in bonobos as in in humans intersexual friendships result in hormonal patterns that we know from species in which male individuals are actively participating in raising their young and in which the two sexes enter lasting pair-relationships", says Martin Surbeck.


'/>"/>

Contact: Dr. Tobias Deschner
deschner@eva.mpg.de
49-341-355-0207
Max-Planck-Gesellschaft
Source:Eurekalert  

Related biology news :

1. Despite peacenik reputation, bonobos hunt and eat other primates too
2. Unusual use of toys in infancy a clue to later autism
3. Researchers study virus with unusual properties
4. Properties of unusual virus revealed in research
5. Unusual microbial ropes grow slowly in cave lake
6. Unusual protein modification involved in muscular dystrophy, cancer
7. Virus infection may trigger unusual immune cells to attack nerves in multiple sclerosis
8. Unusual rhino beetle behavior discovered
9. Expedition to Mid-Cayman Rise identifies unusual variety of deep sea vents
10. Clue to unusual drug-resistant breast cancers found
11. Dairy farmer finds unusual forage grass
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Bonobos' unusual success story
(Date:3/2/2017)... -- Australian stem cell and regenerative medicine company, ... agreement with the Monash Lung Biology Network, a consortia ... Department of Pharmacology at Monash University, Melbourne ... support the use of Cymerus™ mesenchymal stem cells (MSCs) ... is a chronic, long term lung condition recognised by ...
(Date:2/28/2017)... Spanien, 27. Februar 2017  EyeLock LLC, ein marktführendes ... seine erstklassige biometrische Lösung zur Iris-Erkennung auf ... X16 LTE auf dem Mobile World Congress ... Qualcomm-Stand in Halle 3, Stand 3E10, vorstellen. ... Sicherheitsplattform Qualcomm Haven™ – eine Kombination aus ...
(Date:2/22/2017)... , Feb. 22, 2017 With the ... ABI Research identifies four technologies that innovative and ... secure significant share in the changing competitive landscape: ... passive authentication.   "Companies can no ... to security," says Dimitrios Pavlakis , Industry ...
Breaking Biology News(10 mins):
(Date:3/23/2017)... ... March 23, 2017 , ... ... today announced the hire of Dr. Sigmund “Sig” Floyd as Vice President ? ... partnerships and joint development activities. , “Dr. Floyd’s career has spanned 30 years ...
(Date:3/22/2017)... MONICA, Calif. , March 22, 2017 /PRNewswire/ ... are proud to announce their extended partnership and ... will be headlined by the 21 st ... BIOMEDevice Boston, taking place May 3-4, 2017. ... Advanced Medical Technology Association (ADVAMED) President and CEO, ...
(Date:3/22/2017)... ALBANY, New York , March 22, 2017 /PRNewswire/ ... market is largely fragmented, states a research report by ... Sanofi S.A., Pfizer Inc., Amgen Inc., and AbbVie Inc., ... market in 2015. The prominent players in this market ... to expand their product portfolio, which is likely to ...
(Date:3/22/2017)... March 22, 2017   VWR ... of product and service solutions to laboratory ... has acquired EPL Archives, Inc., an international ... the entire regulated product research, development and ... storage and ancillary services. EPL Archives is ...
Breaking Biology Technology: