105

News

Ants to ensure a future for organic apples

Christian Wenande
April 5th, 2016


This article is more than 8 years old.

Little marvels of nature key to fighting pests and disease

Moving an ant colony is no small feat (photo: Jesper Stern Nielsen)

In future, indomitable armies will assist in generating a better harvest of organic fruit trees in Denmark. Ant colonies are being recruited to devour pests, see off fungi and fertilise the plants.

Researchers from Aarhus University (AU) are moving a number of large forest ant colonies from Løvenholm Forest into an apple plantation on Djursland as part of a considerable experiment.

“We are moving a large ant colony from a pine forest and will spread a number of smaller colonies, each having its own queen, around the apple plantations,” said Joachim Offenberg, a senior researcher from the Department of Bioscience at AU.

“The forest ants require needles to construct their colonies, so we are placing extra pine needles in the plantation.”

READ MORE: Danish research: Freeze DNA to save endangered species

The little protector
The researchers hope the ants will devour the unwanted moth larvae that eat the leaves of the apple trees in the spring, thus hampering tree growth and production.

The little moth larvae appear when it is still cold and its natural enemies, the tit and the great tit, are still nesting while other predatory insects have yet to awaken from their winter hibernation.

Aside from the moth larvae, the ants also help fertilise the trees with their urine and excrement, and they also release antibiotics, including fungi poisons, via glands and bacteria on their bodies.

Previous research has documented that the prevalence of illness and disease in wild trees increases dramatically when ants are removed from the area.

The researchers at AU are already ready to move a further couple of hundred thousand ants sometime during this spring.


Share

Most popular

Subscribe to our newsletter

Sign up to receive The Daily Post

















Latest Podcast

A survey carried out by Megafon for TV2 has found that 71 percent of parents have handed over children to daycare in spite of them being sick.

Moreover, 21 percent of those surveyed admitted to medicating their kids with paracetamol, such as Panodil, before sending them to school.

The FOLA parents’ organisation is shocked by the findings.

“I think it is absolutely crazy. It simply cannot be that a child goes to school sick and plays with lots of other children. Then we are faced with the fact that they will infect the whole institution,” said FOLA chair Signe Nielsen.

Pill pushers
At the Børnehuset daycare institution in Silkeborg a meeting was called where parents were implored not to bring their sick children to school.

At Børnehuset there are fears that parents prefer to pack their kids off with a pill without informing teachers.

“We occasionally have children who that they have had a pill for breakfast,” said headteacher Susanne Bødker. “You might think that it is a Panodil more than a vitamin pill, if it is a child who has just been sick, for example.”

Parents sick and tired
Parents, when confronted, often cite pressure at work as a reason for not being able to stay at home with their children.

Many declare that they simply cannot take another day off, as they are afraid of being fired.

Allan Randrup Thomsen, a professor of virology at KU, has heavily criticised the parents’ actions, describing the current situation as a “vicious circle”.

“It promotes the spread of viruses, and it adds momentum to a cycle where parents are pressured by high levels of sick-leave. If they then choose to send the children to daycare while they are still recovering, they keep the epidemic going in daycares, and this in turn puts a greater burden on the parents.”