A Michigan State University researcher revealed the process of how males draw attention to themselves through chemical communication in the current issue of Behavioral Ecology. Scents are used in all organisms for many purposes, such as finding, attracting and evaluating mates. But this is the first study of its kind that demonstrates that it is happening among songbirds, said Danielle Whittaker, managing director of MSU’s BEACON Center for the Study of Evolution in Action.
Body-spray commercials feature young men dousing themselves with fragrance and – voila – hordes of beautiful women or even bands of angels descend upon them. Male birds deploy a similar tactic when they release their cologne – or preen oil – secreted from a gland at the base of their tail. It not only works to attract the attention of female birds, but it also has the unintended effect of attracting males as well.
“It’s kind of like the ‘Axe effect,’ in that females were attracted to the scent and didn’t seem to care where it came from, meaning their own population or a different one – even though birds in these populations look and behave differently,” Whittaker said. “And I think the males were drawn in as an aggressive response to the scent of another male.”
Traditionally, songbirds have been written off in terms of using their sense of smell because they have the smallest olfactory bulbs relative to brain size among all birds. Recently, however, researchers have discovered that songbirds harbor a high number of olfactory receptors, and they’ve been able to prove that the birds are capable of using odors to help find their way.
So, Whittaker and her collaborators in Ellen Ketterson’s lab at Indiana University weren’t surprised to discover that the birds used scent in attracting mates. Some eyebrows were raised, though, when they learned how attractive the scent was across populations and sexes. Another interesting find was that when given a choice, the female birds preferred the odor of the smaller males, Whittaker said.
“However, in a previous study, when they got to see the actual birds, they tended to prefer larger males with larger plumage ornaments,” she said. “Based on these results, I’m hoping to find out how and why small, unattractive males overcompensate by producing greater amounts of an attractive scent.”
MSU’s BEACON Center for the Study of Evolution in Action, a National Science Foundation-funded Science and Technology Center, has partners at North Carolina A&T State University, University of Idaho, University of Texas at Austin and University of Washington.
Michigan State University has been working to advance the common good in uncommon ways for more than 150 years. One of the top research universities in the world, MSU focuses its vast resources on creating solutions to some of the world’s most pressing challenges, while providing life-changing opportunities to a diverse and inclusive academic community through more than 200 programs of study in 17 degree-granting colleges.
Layne Cameron | EurekAlert!
Scientists on the road to discovering impact of urban road dust
18.01.2018 | University of Alberta
Gran Chaco: Biodiversity at High Risk
17.01.2018 | Humboldt-Universität zu Berlin
Physicists have developed a technique based on optical microscopy that can be used to create images of atoms on the nanoscale. In particular, the new method allows the imaging of quantum dots in a semiconductor chip. Together with colleagues from the University of Bochum, scientists from the University of Basel’s Department of Physics and the Swiss Nanoscience Institute reported the findings in the journal Nature Photonics.
Microscopes allow us to see structures that are otherwise invisible to the human eye. However, conventional optical microscopes cannot be used to image...
On the way to an intelligent laboratory, physicists from Innsbruck and Vienna present an artificial agent that autonomously designs quantum experiments. In initial experiments, the system has independently (re)discovered experimental techniques that are nowadays standard in modern quantum optical laboratories. This shows how machines could play a more creative role in research in the future.
We carry smartphones in our pockets, the streets are dotted with semi-autonomous cars, but in the research laboratory experiments are still being designed by...
What enables electrons to be transferred swiftly, for example during photosynthesis? An interdisciplinary team of researchers has worked out the details of how...
For the first time, scientists have precisely measured the effective electrical charge of a single molecule in solution. This fundamental insight of an SNSF Professor could also pave the way for future medical diagnostics.
Electrical charge is one of the key properties that allows molecules to interact. Life itself depends on this phenomenon: many biological processes involve...
At the JEC World Composite Show in Paris in March 2018, the Fraunhofer Institute for Laser Technology ILT will be focusing on the latest trends and innovations in laser machining of composites. Among other things, researchers at the booth shared with the Aachen Center for Integrative Lightweight Production (AZL) will demonstrate how lasers can be used for joining, structuring, cutting and drilling composite materials.
No other industry has attracted as much public attention to composite materials as the automotive industry, which along with the aerospace industry is a driver...
08.01.2018 | Event News
11.12.2017 | Event News
08.12.2017 | Event News
23.01.2018 | Earth Sciences
23.01.2018 | Life Sciences
23.01.2018 | Materials Sciences