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Invasive Chinese mitten crab found in Danish fjord

Lucie Rychla
November 26th, 2015


This article is more than 9 years old.

The burrowing crab could cost Denmark millions of kroner

Chinese mitten crabs (Eriocheir sinensis) have dense brown ‘fur’ on large claws, which they use to burrow holes in river banks (photo: Christian Fischer)

The Chinese mitten crab, regarded as one of the world’s worst invasive species, has been found in the Karrebæk Fjord in southern Zealand, reports TV2.

The medium-sized crab with large, furry claws is feared worldwide due to its ability to damage fishing gear, destroy river banks and clog up drainage systems.

Change natural habitats
In Germany, mitten crabs have caused damage to dykes worth an estimated 600 million kroner.

By burrowing holes in river banks and blocking intake screens, the crab also changes natural habitats and endangers native species.

Clean water in fjord
The Danish nature agency has therefore advised local fishermen to kill the crabs or donate them to aquariums.

The presence of mitten crabs in the Karrebæk Fjord suggests an improved quality of water in the area.

Mitten crabs spend most of their lives in freshwater areas, but head to the sea to breed.

Delicacy in Asia
The species originates in eastern Asia, where it is considered a delicacy.

In Europe, it has been viewed with concern ever since the first recorded sighting in 1912.

 

 


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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.”