Bears May Know When Astringent Persimmons Become Sweet
HYOGO –
Bears preparing for winter hibernation may be able to determine when astringent persimmons have lost their bitterness and become suitable to eat, according to research by the University of Hyogo, which suggests that prioritizing the removal of sweet persimmon trees could help prevent bears from entering residential areas.
As bear activity increases ahead of hibernation, persimmon trees have been identified as one of the factors attracting the animals into populated areas, raising concerns about encounters with humans.
A University of Hyogo study found that bears began eating sweet persimmons as early as late July, while they generally avoided astringent varieties until late November or later.
The difference in feeding behavior suggests that bears may be sensitive to changes in the fruit’s chemical composition, allowing them to recognize when its bitter taste has diminished.
Daisuke Fujiki, an associate professor at the University of Hyogo, said the findings indicate that bears use the concentration of astringent compounds in persimmons to determine whether the fruit is suitable for consumption.
“We found that whether the concentration of astringent compounds falls below a certain level appears to be a factor in determining whether bears will eat the fruit,” Fujiki said.
The findings suggest that bears may be capable of identifying the point at which astringent persimmons become palatable, rather than simply consuming whatever fruit is available.
Researchers warn that astringent persimmons could increasingly attract bears as their bitterness naturally declines in the coming weeks, particularly during the period leading up to winter hibernation.
However, because sweet persimmons attract bears much earlier in the season, researchers believe that prioritizing the removal of sweet persimmon trees in areas vulnerable to bear encounters could be an effective preventive measure.
The study highlights the importance of managing fruit trees around residential communities, particularly during autumn when bears are actively searching for food before entering hibernation.
Source: FNN
On a light note, here is the pilot of a fictional story about a mystical village in Japan where bears and humans live in harmony.
