August 2 (UPI) – Scientists have shown the complex nature of the nematode search on food.
Like most of the worms, Caenorhabditis elegans, rely on their smell to track food. But how do worms interpret smell? How is smell in the worm's brain transferred?
Researchers suggest that the worm and the game brain play "hot and cold."
"Imagine that you are in a large dark house and that a chocolate cake is taken out of the oven," Alon Zaslaver, neurogeneticist at the Hebrew University of Jerusalem, said in a news release. "To find the cake, it is likely that you will sniff around to see how the cake smell is coming and start walking in that direction."
The worm has a similar approach. When a buzzing odor gets a smell, the brain tells the nematode to start crawling. As long as the smell grows in strength, the worm will continue in the same direction. If the smell starts to exhaustion, the worm will stop and review.
In the newest study, scientists are trying to understand just how the wheat forms another way.
Demonstrate their analysis – detailed in Nature magazine – secondary neural cell action. It is the first cell's task to track the smell of the first cell found. The second cell determines whether the smell is positive or negative smell. It is negative – becoming weaker – the second cell tells the stop worm and build a different path.
Both cells work together to guide the worm towards the original scent.
Fluorescent protein scientists registered the neurons of the worm and imaging their brain as the nematode searched for food in the laboratory. Food scientists withdrew from the test materials before releasing them in a tank with specifically located stimuli.
Based on the two-worm answer on the stimulating gradients, scientists put together mathematical systems to describe the look of worms for food.
"These worms are an important lesson," Zaslaver.
While the worm's approach seems simple, the commitment to trial and error – that troubleshooting – offers the hidden strategy.
"We need a backup system that monitors whether we are moving in the right direction," he said, "even if this new path is different to the path we had originally."
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