Big bumblebees have better memories than smaller bees

Bigger is better for bees: Large-bodied bumblebees are more skilled at remembering flowers with the most nectar, scientists find

  • Researchers assessed how bumblebees memorise locations of flowers 
  • Found bumblebees with bigger bodies have a more complex pattern 
  • They prioritise memorising the locations of flowers with the most nectar  
  • Smaller bees simply put the same amount of energy into learning location of every single flower  

Plumper bumblebees learn which flowers are filled with the most nectar and remember their locations to prioritise them in the future, a study has found. 

It reveals bigger bees are better at cultivating a mental map of netar-laden flowers whereas smaller bees fail to take heed of varying sugar levels. 

Bees are key pollinators and their quest for nectar, which they use as food and subsequently produce honey, is a never-ending task. 

Scroll down for video 

Bigger bees are better at cultivating a mental map of netar-laden flowers whereas smaller bees fail to take heed of varying sugar levels, a study has found 

Scientists at the University of Exeter compared the foraging patterns over time of both large and small bees. 

‘It might not be widely known that pollinating insects learn and develop individual flower preferences, but in fact bumblebees are selective,’ said Dr Natalie Hempel de Ibarra, co-author of the study. 

‘On leaving a flower, they can actively decide how much effort to put into remembering its location.

‘The surprising finding of our study is that a bee’s size determines this decision making and the learning behaviour.’

The researchers built artificial flowers in greenhouses at the university with varying levels of sugar to gauge how, over time, bees changed their behaviour. 

They found smaller bees invest the same amount of effort in learning the locations of all flowers, regardless of whether the sugar levels were high or low.  

However, the researchers also found the larger a bees body size, the more pronounced its learning behaviour was.  

‘The differences we found reflect the different roles of bees in their colonies,’ said Dr Hempel de Ibarra adds. 

‘Large bumblebees can carry larger loads and explore further from the nest than smaller ones.’

The findings are published in the journal Current Biology.

Venom from honeybees could be used to treat aggressive forms of breast cancer 

Compounds found inside honeybee venom can help to tackle aggressive forms of breast cancer without putting healthy cells at risk, a clinical study discovered.  

Experts from the University of Western Australia used venom from 312 bees found in Perth, Western Australia, Ireland and England as part of the research.

The team tested the effects of venom on different types of breast cancers that have limited treatment – they found it rapidly destroyed tumours and cancerous cells.  

Before this study nobody had compared the effects of honeybee venom or a component of the venom called melittin on cancerous and normal cell types. 

Researchers were able to extract melittin from the venom, recreate it and then use it to kill up to 100 per cent of cancer cells without having an effect on normal cells. 

Source: Read Full Article