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Home » “Alpha male” primates are rare, and women are almost equally likely to dominate the opposite sex, studies find
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“Alpha male” primates are rare, and women are almost equally likely to dominate the opposite sex, studies find

userBy userJuly 10, 2025No Comments3 Mins Read
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In the primate world, scientists have discovered that alpha men rarely dominate women. And there are examples of men who dominate women as much as women dominate men.

Researchers have investigated sexual domination across more than 100 primate species and found that in most primates, neither sex is clearly less dominant than the challenging historical assumption that men are more dominant than usual.

The researchers’ findings, published on July 7th on PNAS on July 7th, often allow them to draw subtle pictures of sexual relationships and win offensive contests against each other.

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And in a few types of small numbers with a clear advantage, men and women usually employ different strategies to control others.

“Critical, primate males acquire power through physical force and coercion, but female empowerment relies on alternative pathways, such as reproductive strategies to control mats,” the researcher, the first author of a senior researcher studying mammal behavior at the University of Montpellier in France, said in a statement.

Related: Chimpanzees shove grass into ears and develop fashion trends in the butt

Historically, scientists have often assumed that males are the dominant gender of all mammals. However, male mammals do not always have the advantage of size over females. In recent decades, researchers have documented many cases of women leading to mother Orcas (Orcinus orca), who leads to aggressive female meerkats (Suricata suricatta), to aggressive female meerkats (Suricata suricatta), who overtake men’s counters. The same can be said for primates, but female domination has been recorded in species such as bonobos (Pampaniscus) and ring-tailed lemurs (Lemurcutta).

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To investigate the sexual relationships of primates across multiple species, researchers analyzed data from 253 primate studies. The team found that active male-female encounters are common in primates, accounting for about half of all competitions, but one side was rare.

Researchers measured the winners of intersexel contests in 151 populations of 84 species, and found that men always won in a population of 25 people, including 16 species, and women always won in a population of 20 people, including 16 species. The results were more complicated in the remaining 106 populations of 69 species, and according to the study there was moderate sex bias.

The dominance differed among single species, not across different primate species. For example, the different female bonobo population won 48% to 79% in the contest, while the female Patas Monkey (Elysrochebas Patas) won 0% to 61% in the contest. Researchers noted that Angolan Talopoin (Myopitecus Talopoin) can demonstrate strict male domination, strict female domination, or clear bias between the two, depending on the group observed.

Researchers investigated the mechanisms behind this various domination in primates and found that physical properties play a role, but also where and how the animals lived. Female domination mostly occurred in populations where women had reproductive control. In other words, they decided whether to mate. For example, this was usually the case for monogamous species that lived in trees where women could escape men and that conflict poses too much a threat to offspring that the women were already carrying. In contrast, male dominance was more common in underground species where men were larger and had greater contrast mating with multiple women.

“Recent research has begun to challenge the traditional view that male domination is the default status. Our research provides a more comprehensive investigation of the fluctuations in sexual domination relationships,” Peter Kappeller, director of behavioral ecology and sociobiology at the German prison laboratory, said in a statement.


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