Robust new research published in the journal Nature Communications Shows how certain types of gut bacteria directly improve the long-term memory of bumblebees. The study found that bacterial metabolites could improve cognitive function in honeybees and provide compelling insights into the relationship between microbiomes and the brain.
Bees, like humans, Bacteria in the intestines .. And like us, these bacterial populations affect general health. However, relatively speaking, the gut flora of bees is much smaller and less complex than the gut flora of humans, so to study how certain bacteria affect health and behavior. Will be a useful model for.
“The honeybee’s posterior intestine (ileum and rectum) is the most abundant in bacteria and is dominated by the clade (systematic) of the five core bacterial species. Snodgrassella alvi , Gilliamella apicola , Lactobacillus Company-4, Lactobacillus Company-5, and Bifidobacterium Species) ”, the researchers explain in a new study. “Each bacterial species within this core group is thought to be symbiotic and has distinct metabolic functions associated with host-mutualistic interactions, biofilm formation, and carbohydrate degradation.”
Researchers first set out to measure the individual memory capacity of many bees. To do this, a memory test was developed to release bees in a closed environment containing artificial flowers of 10 different colors. Five colors showed flowers in a sweet solution and the other five colors were linked in a bitter solution.
Bees were trained to distinguish between sweet and bitter flowers through five short foraging trips. They were then trapped in the nest for three days and then released again to track their movements and measure how well they remember which flowers were sweet and which were undesirable.
Next, researchers sampled the gut microbiota of insects to determine the correlation between certain species of gut bacteria and better memory capacity.One species known as Lactobacillus Apis, It stood out immediately. Bees, which are high in this bacterium in the intestine, performed much better in memory tests.
To reduce whether this relationship between bacteria and memory is the cause, researchers have given different groups of bees to different bacteria. Received by one group Lactobacillus Apis , And two other groups received common species of gut microbiota that are not cognitively related.Those bees that consume Lactobacillus Apis The supplement showed a significant improvement in memory performance compared to others.
“Our results show that natural changes in the amount of certain gut bacteria not only affect memory, but also have a causal relationship. Adding the same bacterial species to the bee diet enhances memory. You can, “explains the lead author. Research, Lee Lee.
So how much do bacteria affect the memory of bees?
Researcher discovered Lactobacillus Apis It plays a role in metabolic pathways mediated by a group of molecules known as glycerophospholipids. The more this particular bacterium in the posterior intestine of the bee, the more circulating glycerophospholipids were detected.And when researchers directly supplemented the bees with certain types of glycerophospholipids, they detected the same level of memory improvement that was seen when the bees were given. Lactobacillus apis.
In humans, glycerophospholipids are an important […]