HOME >> BIOLOGY >> NEWS
Brains reflect sex differences

When male primates tussle and females develop their social skills it leaves a permanent mark on their brains. According to research published in the online open access journal BMC Biology, brain structures have developed due to different pressures on males and females to keep up with social or competitive demands.

An international research team consisting of Patrik Lindenfors, Charles Nunn and Robert Barton examined data on primate brain structures in relation to traits important for male competition, such as greater body mass and larger canine teeth. The researchers also took into account the typical group size of each sex for individual primate species in order to assess sex-specific sociality - the tendency to associate with others and form social groups. The researchers then studied the differences between 21 primate species, which included chimpanzees, gorillas, and rhesus monkeys, using statistical techniques that incorporate evolutionary processes.

The authors found that sexual selection had an important influence on primates brains. Greater male-on-male competition (sexual selection) correlated with several brain structures involved with autonomic functions, sensory-motor skills and aggression. Where sexual selection played a greater role the septum was smaller, and therefore potentially exercised less control over aggression.

In contrast, the average number of females in a social group correlates with the relative size of the telencephalon (or cerebrum), the largest part of the brain. The telencephalon includes the neocortex, which is responsible for higher functions such as sensory perception, generation of motor commands and spatial reasoning. Primates with the most sociable females evolved a larger neocortex, suggesting that female social skills may yield the biggest brains for the species as a whole. Social demands on females and competitive demands on males require skills handled by different brain components, the aut
'"/>

Contact: Martyn Thomas
press@biomedcentral.com
44-020-763-19986
BioMed Central
10-May-2007


Page: 1 2

Related biology news :

1. Brainstem blocks pain to protect key behaviors
2. Brains response to visual stimuli helps us to focus on what we should see, rather than all there is to see
3. UGA research shows rats are capable of reflecting on mental processes
4. Lack of coherent cloning policies reflects polarized debate, limited understanding, study says
5. Predicting the future: Mirror neurons reflect the intentions of others
6. Chimpanzee brains are asymmetrical in key areas and their handedness reflects it
7. Study finds gender differences in renal and other genes contributing to blood pressure
8. Sugar and spice and everything nice: Health differences in newborn girls and boys
9. New tumor markers -- Spot the differences
10. Gene analysis might explain ethnic differences in sensitivity to chemotherapy in lung cancer
11. Analysis of rhesus monkey genome uncovers genetic differences with humans, chimps

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:7/31/2020)... ... July 30, 2020 , ... ... product portfolio with a near term focus on Type 2 diabetes and associated ... experience across multiple therapeutic areas and classes. As Chief Commercial Officer, Justin will ...
(Date:7/10/2020)... ... 08, 2020 , ... Overcoming Comparability Issues in Regenerative Medicines ... Wednesday, July 22, 2020 • 1:30 p.m.-3:00 p.m. EDT, https://www.fdanews.com/cellandgenetherapy , ... way to complete one? Will the study comply with all FDA requirements? Understanding ...
(Date:7/2/2020)... ... July 02, 2020 , ... ... publication detailing the use of its revolutionary NEXTGENPCR endpoint thermocycler to test ... 16 minutes. The article, titled "Ultra-fast one-step RT-PCR protocol for the detection ...
Breaking Biology News(10 mins):
(Date:8/3/2020)... ... August 03, 2020 , ... Introducing Ardent Animal Health – MediVet ... , Known as MediVet Biologics since its formation in 2016, the ... new Ardent Animal Health will build on its base of innovative therapies for osteoarthritis ...
(Date:7/31/2020)... STATION, Texas (PRWEB) , ... July 29, 2020 ... ... cleanroom solutions today announced the launch of its new tagline, “BUILDING FOR LIFE.” ... the biopharmaceutical industry and around the globe, requiring fast track capacity to provide ...
(Date:7/31/2020)... Mass. (PRWEB) , ... July 29, 2020 , ... ... wire that can combine up to three different materials for use with CRM, ... combine up to three materials to meet specific design requirements, performance, and cost ...
(Date:7/31/2020)... ... ... eSource has long been touted as the solution to high data management and monitoring ... did not take off as quickly as people initially expected, and where eSource is ... data electronically for clinical trials and then repurposing it for downstream analysis, at a ...
Breaking Biology Technology:
Cached News: