麻豆视频

The microbiomes of non-human primates might have more flexibility than previously thought, according to a CU Boulder anthropologist

Social behaviors and microbiome diversity might be interconnected, according to new research by a 麻豆视频 anthropologist.

The research finds that lemurs who have more social interaction have less microbiome diversity鈥攁nd tend to be under stress鈥攚hile more solitary lemurs have greater diversity in microbiomes. Scientists are probing the question of whether microbiome diversity is generally beneficial.

These findings were in the Journal of Animal Ecology.

鈥淲hat was interesting was that it showed social influence impacting the microbiome directly,鈥� says Steven R. Leigh, professor of anthropology and former dean of the College of Arts and Sciences.

Fecal samples of red-bellied lemurs were collected in Madagascar and analyzed by a transnational team of researchers from Oxford University and the University of Illinois Champaign-Urbana.

In Madagascar, lemurs branched off early in ancient evolutionary history and co-evolved with their environments.

鈥淧rimatologists have found that fecal samples are surprisingly informative, far more than we could have ever anticipated,鈥� Leigh states, noting that collecting fecal samples disturbs the animals less than sampling methods involving direct contact. Samples tend to be abundant, and are easy to obtain, analyze, and archive.听

Data gathered from red-bellied lemurs suggest that those subject to stress are more likely to cuddle and be groomed by their peers. Stress reduces microbiome diversity, and diverse gut bacteria and microbiomes directly impact lemur immune system capabilities.

This study is part of a larger project formed by Leigh analyzes multiple primate species and problem sets. 鈥淲e have been trying to compare microbiomes across a large number of species.鈥�

Leigh鈥檚 overarching project examined 40 to 50 other primate species鈥� microbiomes thus far, examining behavioral correlations to microbiome diversity and differences from humans.

鈥淥ne of the really interesting things there is that human microbiomes are very flexible. We do not normally see that flexibility in non-human primates, although this study is showing flexibility based on social interaction.鈥�

Previously microbiomes from human hunter-gatherer groups, non-hunter-gatherer groups and gorillas have been compared by Leigh鈥檚 team, consisting of Rob Knight and Katherine Amato, formerly at CU Boulder but now at the University of California San Diego and Northwestern University, respectively. Knight is known as a well-known microbiome researcher.

Comparing different species, Leigh鈥檚 work analyzes complex factors leading to microbiome diversity, including social relations, cuddling, grooming, seasonal dietary habits and region of body.

Leigh also notes that technological advancements in sequencing techniques just in the last few years have been remarkable, meaning samples are more productive and yield more data.

Lemurs鈥� bodies, just like humans, have more microbes than cells. 鈥淭here are more bacteria, viruses, archaea in us than our own cells,鈥� Leigh states. Bacteria and archaea are two of three major branches on the tree of life.

He adds, 鈥淵ou can鈥檛 really ignore a system that is that extensive.鈥�

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