Robots Enable Bees and Fish To Talk To Each Other
Through an imaginative experiment, researchers were able to get two extremely different animal species located far apart to interact with each other and reach a shared decision with the help of robots.
Credit: Ecole Polytechnique Fédérale de Lausanne
Bees and fish don’t often have the occasion to meet, nor would they have much to say to each other if they did. However, under the ASSISIbf project, engineers from EPFL and four other European universities* were able to get groups of bees and fish to communicate with each other. The bees were located in Austria and the fish in Switzerland. Through robots, the two species transmitted signals back and forth to each other and gradually began coordinating their decisions. The study was published today in Science Robotics.
“We created an unprecedented bridge between the two animal communities, enabling them to exchange some of their dynamics,” says Frank Bonnet, a researcher at EPFL’s Mobile Robots Group (MOBOTS), which is now part of the school’s Biorobotics Laboratory (BioRob). Researchers at MOBOTS have designed robots that can blend into groups of animals and influence their behavior. They have tested their robots on communities of cockroaches, chicks and, more recently, fish – one of these “spy” robots was able to infiltrate a school of fish in a circular aquarium and get them to swim in a given direction.
For this study, engineers took the fish experiment and went one step further, connecting the robot and school of fish with a colony of bees in a laboratory in Graz, Austria. There the bees live on a platform with robot terminals on each side which they naturally tend to swarm around.
Acting as a go-between
The robots within each group of animals emitted signals specific to that species. The robot in the school of fish emitted both visual signals – in terms of different shapes, colors and stripes – and behavioral signals – like accelerations, vibrations and tail movements. The robots in the bee colony emitted signals mainly in the form of vibrations, temperature variations and air movements. Both groups of animals responded to the signals; the fish started swimming in a given direction and the bees started swarming around just one of the terminals. The robots in the two groups recorded the dynamics of each group, exchanged that information with each other, and then translated the information received into signals appropriate for the corresponding species.
“The robots acted as if they were negotiators and interpreters in an international conference. Through the various information exchanges, the two groups of animals gradually came to a shared decision,” says Francesco Mondada, a professor at BioRob.
Credit: Ecole Polytechnique Fédérale de Lausanne
Swapping certain characteristics
“The species even started adopting some of each other’s characteristics. The bees became a little more restless and less likely to swarm together than usual, and the fish started to group together more than they usually would,” says Bonnet.
The study’s findings could help robotics engineers develop an effective way for machines to capture and translate biological signals. And for biologists, the study could enable them to better understand animal behavior and how individuals within an ecosystem interact. Further out, the research could be used to develop methods for monitoring natural habitats by using animals’ exceptional sensory capabilities. For instance, scientists could encourage birds to avoid airports and the related dangers or direct pollinators toward organic crops and away from crops with pesticides.
*University of Lisbon, Portugal; University of Graz, Austria; University of Paris Diderot, France; and University of Zagreb, Croatia
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Contacts and sources:
Sarah Perrin
Ecole Polytechnique Fédérale de Lausanne
Frank Bonnet, Rob Mills, Martina Szopek, Sarah Schönwetter-Fuchs, José Halloy, Stjepan Bogdan, Luís Correia, Francesco Mondada and Thomas Schmickl.
Published on March 20, 2019 in Science Robotics.
Source: http://www.ineffableisland.com/2019/03/robots-enable-bees-and-fish-to-talk-to.html
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