Scientists have found that bee gut bacteria can improve memory

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in order to test the memory and learning ability of bees, researchers created artificial flowers of different colors. Five colors are related to sweet sucrose solution, and the other five are related to bitter solution containing quinine, which is a repellent for honey bees. The researchers then observed how quickly bees learned which colors were related to the reward of sugar, and whether they could retain this information in subsequent tests three days later. By sequencing intestinal samples of bees, they were then able to compare individual differences in learning and memory abilities with different levels of bacteria found in their intestines

Scientists have found that bee gut bacteria can improve memory

to confirm that the number of lactic acid bacteria in the intestine directly led to the observed memory differences, the researchers added these bacteria to the bee diet and measured their response to the same task. The study, published in the journal Nature communications, shows increasing evidence that the intestinal microbiome can affect animal behavior

the cognitive ability of honeybees varies from individual to individual. Compared with mammals, their intestinal microbial community is relatively small, which makes them an ideal model to explore the role of specific intestinal bacteria in individual cognitive differences. The researchers believe that the observed microbiome changes among individuals may come from differences or changes in nest environment, activity, pathogens, social interaction and pollination environment

the results show that not only the natural variation of the number of specific intestinal bacteria will affect memory, but also show a causal relationship. Adding the same bacterial species to the bee diet can enhance their memory. This is a fascinating discovery that may apply to humans and bees. The findings add to growing evidence of the importance of gut brain interaction in animals