Bees are some of the oldest species on our earth, dating back over 100-million years ago. They arguably do the most thankless job and get very little credit. It hasn’t been until the last decade that people are starting to understand the importance of bees and how they need to be protected at all costs. Bees number one job for the planet is to pollinate, these pollinators work with the likes of ants, bats, moths, birds and butterflies to spread pollen over crops and plants throughout the world. Bees however are the superstars and most fragile when it comes to insects that spread pollen. Scientists attribute the pollination of bees to one out of every three bites of food the average person eats. Food groups such as apples, almonds, avocados, blueberries, cherries, cucumbers, onions, grapefruit, orange and pumpkins would be impossible to grow without the pollination spread from bees. Almonds are a perfect example with every acre of almonds requiring around two hives just to survive and grow. Bees also have a major contribution to the global economy, with bees pollinating crops upwards to around 14 billion dollars annually.
Unfortunately though the insects that were named the world’s most invaluable species are in a rate of rapid decline, so why are bees disappearing?
One term that has been commonly coined is colony collapse disorder (CCD) which is the sudden and unexplained decline of a single or group of hives. The phenomenon occurs when the worker bees of the colony disappear leaving behind the queen, food and nurse bees. Between 2007-2013 over 10 million bee colonies across the world were lost to CCD. There are several possible reasons CCD occurs but a specific option cannot be decide among the scientific world. There are a few suggestions that indicate what is causing this rapid decrease in bee population:
Loss of habitat
Bees are flat out running out of real estate, the wildflowers bees use to get their pollen are diminishing. Fields of flowers are now either filled with harmful pesticides that kill the bees, or have been wiped out due to growing industrial development that is diminishing the land the flowers once grew in.
Climate Change
As the climate warms up in temperature it can directly influence the behaviour of the bees and how they hibernate. With the drastic weather fluctuations taking place over the last few years bees sometimes think it is time to stop their hibernations and head back to work. This leads many bees to leave their hive, not returning in time when the warm snap breaks. The queen then becomes vulnerable during the cold months because her workers aren’t there to protect and keep her warm. If the queen dies then the colony leaves in search for a new leader, at times never finding one.
Varroa Mites
These mites are arguably the biggest problem when it comes to the decline of bees over the last 20 years. Varroa Mites are known to feed on bees blood vessels, along with their larvae. This leads to the bees lifespans being weakened and shortened and their newborn are born with defects. The spread of varroa mites within a colony can be detrimental to its survival.
Pesticides
Pesticides are commonly used among growers of plants and crops to protect against invasive insects. Recently a pesticide known as neonicotinoids is being used and it is known to affect bees nervous systems making it hard for them to fly straight. This pesticide is used around the world and is one of the most commonly used insecticides. Until growers alter their usage of certain pesticides then bees will continue to be effected.