Whereas cuttlefish carrying glasses is a surprising sight, a College of Minnesota-led analysis workforce constructed an underwater theater and geared up the cephalopods with specialized three-D lenses to analyze how cuttlefish decide the most effective distance to strike shifting prey. Their analysis revealed cuttlefish use stereopsis to understand depth when searching for a shifting goal.
The conclusions are printed in the journal Science Advances.
Cuttlefish catch a meal by deploying their tentacles, and, to achieve the success of their strike, cuttlefish should compute depth to place themselves on the appropriate distance from the prey. If they’re too shut, the victim could also be spooked and escape; too far and the tentacles are not going to attain.
To check how the cuttlefish mind computes the distance to an object, the group skilled cuttlefish to put on three-D glasses and strike at pictures of two strolling shrimp, every a particular shade displayed on a pc display screen on the Marine Organic Laboratory in Woods Gap, Mass.
The pictures had been offset, permitting the researchers to find out if the cuttlefish had been evaluating photos between the left and the right eyes to assemble details about the distance to their prey. The method of assessing the pictures is known as stereopsis and is an identical manner people decide depth. Relying on the picture offset, the cuttlefish would understand the shrimp to be both in the entrance of or behind the display. The cuttlefish predictably struck too near or too removed from the show, in line with the offset.