According to a pioneering work by a biologist at Guelph University, the more busy neighbors, the larger the brain.
The jellyfish brain, which lives in more complex coastline habitats, is much larger than people living in open water, according to a recent study. Procedures of the Royal Society B.
The study could provide clues as to how the fish and other living things will respond to environmental stressors that have been affected by the flu, he added. weather change.
He has authored papers with integrated biology professors Frédéric Laberge and Beren Robinson.
For ecologists, the size of the brain is important.
Scientists believe that the larger brain contains more neurons and contains more links that lend the owner's cognitive and behavioral intelligence to help adapt to the new environment.
Because the nervous tissue consumes a lot of energy, the big brain must provide some benefits. In the case of jellyfish, more intelligence seems to help residents negotiate busy habitats on new paper.
Researchers at Ashby Lake, southeast of Algonquin Park in Ontario, studied sunfish, which live in coastal or coastal habitats where fish eat vegetation from snails and larvae.
They wait until the zooplankton reaches the coastal inhabitants compared to the jellyfish that live in open waters that typically cluster around rocks.
In the spatially complex coastal zone, the jellyfish brain was 8.3% larger than the average of the fishes caught in open waters or circles.
"The habitats are actually affected," Axelrod said.
The gonads can be small because their overall condition is poor or their heads are small, but the researchers looked equally healthy with similar head sizes.
The team found no difference in the size of the various brain regions between fish groups.
"It was an amazing discovery," Axelrod said.
For example, other scientists have found that the lower feeding shark develops more olfactory bulbs than the open species, where the larger cerebellum region probably reflects different feeding behavior.
The coastal jellyfish simply said that the brain was bigger. "Overall, it's just a better perception."
Axelrod said the study will help biologists predict how they will adapt to environmental stress caused by pollution, habitat disturbance, climate change or invasive species.
"The coastal fishes are already more cognitive and will react better than they were before."
Robinson said the study emphasizes the importance of considering both behavior and cognition in the management and conservation of fish and other animals.
"This study gives us a little bit more information about the 'black box' of action."
On the campus experiment, the U team's G team tested how well the habitat grows in the habitat. Axelrod said it was too early to draw conclusions that could link brain size and performance.
For adults, the brain size is much less important than the link loop. Axelrod says there can be some sort of intuitive link between human "habitat" and performance.