, pub-4214183376442067, DIRECT, f08c47fec0942fa0
21.1 C
New York
Wednesday, June 7, 2023

These worms can escape tangled blobs straight away. Right here’s how

Like tiny, wriggling Houdinis, California blackworms are grasp escape artists. Teams of the worms work themselves into gnarly tangles however they will undo the knots in simply tens of milliseconds. Now scientists have teased out how they do it.

Present in ponds and different standing water, California blackworms (Lumbriculus variegatus) interlace themselves into clumps to regulate their temperature or preserve moisture (SN: 1/11/19). The worms are usually just some centimeters lengthy. Their clumps, which may comprise anyplace from 5 to 50,000 worms, take minutes to weave. However when spooked by a possible predator, the worms are outta there straight away.

Movies and ultrasound photographs helped scientists unravel the worms’ conduct. The tangling and loosening outcomes from the various kinds of sinuous paths the worms take, researchers report within the April 28 Science.

When the worms are in tangling mode, they do loop-de-loops within the clump, swimming in round paths that solely sometimes swap course between clockwise and counterclockwise. To disentangle, the worms go into overdrive, steadily switching between clockwise and counterclockwise, usually forming determine eights with their our bodies. “It’s form of just like the worms have two gears,” — tangling or untangling — says utilized mathematician Vishal Patil of Stanford College.

California blackworms tangle their our bodies round each other to kind worm clumps, which may take many minutes. Regardless of the complexity of the knotted blobs, the worms can free themselves virtually instantly in response to an disagreeable stimulus (on this case electrical stimulation from a nine-volt battery).

Patil and colleagues created pc simulations that re-created the worms’ elite escape abilities. Simulated worms that not often modified looping course tangled right into a blob, and people who usually reversed course shortly exploded out of the knot. These simulations helped verify the mechanism behind the tangling and untangling.

Understanding how tangling and untangling works is related past worms — or this morning’s bedhead. Felt is created from tangled fibers, as are birds’ nests and a number of different supplies (SN: 5/12/22). Finding out worm snarls may assist scientists design tangled supplies that may be tweaked. By altering the quantity of tangle between fibers, scientists might alter properties just like the stiffness of a fabric.

Emily Conover

Physics author Emily Conover has a Ph.D. in physics from the College of Chicago. She is a two-time winner of the D.C. Science Writers’ Affiliation Newsbrief award.

Related Articles


Please enter your comment!
Please enter your name here

Latest Articles