Biologist Marie Dacke, of Lund University in Sweden, said, her team wanted to know how the African dung beetles roll their dung balls in a perfectly straight line at night. So they brought the bugs to a planetarium.While the humble African dung beetle, is best known for rolling around poop balls, it now has a far more spectacular distinction. It’s the first known creature to use the Milky Way as its compass. In this environment, we could now dictate and call up, and say, we want the eighteen brightest stars, or we want the four thousand dimmest stars, or we want only the Milky Way. And no matter what we showed them, from the whole starry sky to only the Milky Way, the beetles did equally well. And this is what told us the beetles are using the Milky Way for their orientation.When night falls, a baby Cardinalfish always knows exactly where home is. This is because they can feel the Earth’s magnetic field. New research has shown that the animals have an internal ‘compass’ that can help them orient even when there’s no sun or stars shining to guide them. For their experiment, Professor Kingsford and his team collected Cardinalfish less than one centimeter in length from Great Barrier Reef’s One Tree Island. They were testing how well these tiny fish were able to orient in total darkness in the same magnetic field as the reef. Kingsford explained that the fish normally orient to the southeast but when his team shifted the magnetic field 120 degrees clockwise, the fish suddenly changed the direction they swam in by all turning and swimming west, confident that they were still on track. This shows that, as research now stands, both the dung beetle and the baby cardinal fish, are the first animals that use the solar system can feel magnetic fields and use them to orient themselves.
What Do Baby Cardinal fish And Dung Beetles Make Use Of The Solar System For?
Posted in Uncategorized