Monogamy better for monkey families, study suggests

May 7, 2013
An owl monkey.

It seems there is trouble in paradise for a rare monogamous species of monkey, after a University of Derby biologist found committed couples are targeted by aggressive singles determined to break up a happy home.

For her study published in the journal PLoS ONE earlier this month (April 2013), Lecturer in Biology Maren Huck, spent almost 15 months in the sub-tropical gallery forest of Northern Argentina observing owl monkeys. The pairs of the species are, unusually for primates, monogamous.

Maren's observations of the monkey's mating system contributed to a 16 year-long study of 18 owl monkey groups with co-researcher Eduardo Fernandez-Duque, of the University of Pennsylvania (USA).

"Owl monkeys are one of a few monogamous who find and mate with a single partner, raising offspring together each year," said Maren.

"Little is known about this rare primate behaviour, and it is often assumed that all of the pairs and individuals in groups face little aggression or competition, once they are part of a couple. However we discovered that occasionally a 'single' owl monkey attacked a couple and replaced a partner. A phenomenon that sometimes had fatal consequences for the expelled monkey."

Maren Huck carrying out the research in the sub-tropical gallery forest of Northern Argentina.

The study found that this went on to have significant implications for the reproductive success of the newly formed couple, with the new pair going on to produce far fewer offspring than couples who had not been parted. Monkeys with one partner for life produced 25% more infants per decade than those who had had two or more partners following a break-up.

This contrasts with other species of animals and birds, such as the kittiwake, which 'divorce', and whose lifetime following a break-up is higher than if they remained with its original partner.

"We think this is due to the new owl monkey couple missing a reproductive season as they become familiar with one another," said Maren.

In addition to her work on the behavioural, genetic, and hormonal aspects of the mating system owl , Dr Huck has also carried out research studies that compared the behaviour and social structure of urban badgers with countryside populations, examined the physical barriers facing populations of wolves and lynx in Poland and investigated the social and genetic mating system of the moustached tamarin.

Explore further: Owl monkeys who 'stay true' reproduce more than those with multiple partners, Penn study finds

Related Stories

New African monkey species identified

September 12, 2012

Researchers have identified a new species of African monkey, locally known as the lesula, described in the Sep. 12 issue of the open access journal PLOS ONE. This is only the second new species of African monkey discovered ...

Tonkin snub-nosed monkey sighting in Vietnam

May 21, 2012

As one of the most endangered primate species in the world, sightings of the elusive Tonkin snub-nosed monkey are rare. It’s no wonder a recent sighting of a group in Vietnam has proved cause for celebration.

Recommended for you

Protein disrupts infectious biofilms

December 8, 2016

Many infectious pathogens are difficult to treat because they develop into biofilms, layers of metabolically active but slowly growing bacteria embedded in a protective layer of slime, which are inherently more resistant ...

An anti-CRISPR for gene editing

December 8, 2016

Researchers have discovered a way to program cells to inhibit CRISPR-Cas9 activity. "Anti-CRISPR" proteins had previously been isolated from viruses that infect bacteria, but now University of Toronto and University of Massachusetts ...

The song of silence

December 8, 2016

Like humans learning to speak, juvenile birds learn to sing by mimicking vocalizations of adults of the same species during development. Juvenile birds preferentially learn the song of their own species, even in noisy environments ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.