The humble dust collecting in the average American household harbors a teeming menagerie of bacteria and fungi, and as researchers from the University of Colorado Boulder and North Carolina State University have discovered, it may be able to predict not only the geographic region of a given home, but the gender ratio of the occupants and the presence of a pet as well.
The new findings, which were published today in the journal Proceedings of the Royal Society B, highlight the impressive amount of microbial diversity in the average household and the degree to which these organisms can tell a story about the homes they inhabit.
"Every day, we're surrounded by a vast array of organisms in our homes, most of which we can't see," said Noah Fierer, an Associate Professor in the Department of Ecology and Evolutionary Biology at CU-Boulder and a co-author of the study. "We live in a microbial zoo, and this study was an attempt to catalog that diversity."
The study examined roughly 1,200 homes across the continental U.S. Volunteers participating in the Wild Life of Our Homes citizen science project helped researchers collect indoor and outdoor dust samples at each site.
On average, each home contains more than 5,000 different species of bacteria and around 2,000 species of fungi. Fungal communities tend to be more predictive of a home's location while bacterial communities provide clues about the identity of its residents.
"Geography is the best predictor of fungi in your home," said Fierer, who is also a research fellow at the Cooperative Institute for Research in Environmental Sciences (CIRES) at CU-Boulder. "The reason is that most fungi blow in from outdoors via soil and leaves," he said, noting that a home in the upper Midwest, for instance, will harbor distinct fungi compared to a home in the Southeast.
When it comes to bacteria, however, where you live may be less important than whom you live with. From the dust samples, researchers could confidently predict which homes had pets such as cats or dogs and, to a slightly lesser extent, the gender ratio of the residents. Homes with only male occupants, for example, will have a different bacterial makeup than those with both male and female occupants.
"One of the key takeaways is that if you want to change what you breathe inside your house, you would either have to move very far away or change the people and the pets you live with," said Albert Barbarán, a graduate researcher in CU-Boulder's Department of Ecology and Evolutionary Biology and lead author of the study.
The findings may have future implications for forensic investigations and allergen research.
The study was co-authored by Rob Dunn, Associate Professor of Biological Sciences at North Carolina State University (NCSU); Brian Reich, Associate Professor in the Department of Statistics at NCSU; Krishna Pacifici, Research Assistant Professor in the Department of Applied Ecology at NCSU; Eric Laber, Assistant Professor in the Department of Statistics at NCSU; Holly Menninger, Director of Public Science for the College of Sciences at NCSU; Shelly Miller, Professor in the Department of Mechanical Engineering at CU-Boulder; James Morton, a former graduate researcher in the Department of Interdisciplinary Qualitative Biology at CU-Boulder; and Jessica Henley and Jonathan Leff, both graduate researchers in the Department of Ecology and Evolutionary Biology at CU-Boulder.
The National Science Foundation provided funding for the research, with additional support from the A.P. Sloan Microbiology of the Built Environment Program and the Personal Genomes Project.
Noah Fierer | EurekAlert!
Zebrafish's near 360 degree UV-vision knocks stripes off Google Street View
22.06.2018 | University of Sussex
New cellular pathway helps explain how inflammation leads to artery disease
22.06.2018 | Cedars-Sinai Medical Center
In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.
Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...
Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...
Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.
Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...
The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.
An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.
Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...
13.06.2018 | Event News
08.06.2018 | Event News
05.06.2018 | Event News
22.06.2018 | Materials Sciences
22.06.2018 | Earth Sciences
22.06.2018 | Life Sciences