Invasion of the black rats

9th June 2006, Comments 0 comments

9 June 2006, AMSTERDAM – The black rat is appearing more frequently in the Netherlands, and especially in residential areas, according to a report of Dutch research organisation Kenniscentrum Dierplagen (Animal Plagues Knowledge Centre, KAD).

9 June 2006

AMSTERDAM – The black rat is appearing more frequently in the Netherlands, and especially in residential areas, according to a report of Dutch research organisation Kenniscentrum Dierplagen (Animal Plagues Knowledge Centre, KAD).


An employee at the centre, Johan van Rooij said that the black rat had been seen last year only in the south of the country, in Limburg and Brabant, but the animals have now been seen in buildings near harbours in Rotterdam, Amsterdam and even Zwolle.

The black rats are difficult to keep down, partly because they are good climbers, often nesting under commercial premises or in attics. ‘They can chew through isolation material, water pipes and cables’ said Van Rooij. He added that the black rat, a.k.a. rattus rattus and originally from the tropics, is a carrier of a number of diseases, among them swine fever.


The reason for the increased number of black rats is not known. The rats could have developed resistance to pesticides, the report said. Van Rooij said that the KAD was conducting research into the invasion with city councils, city health services and pest control companies.

‘One of the purposes of the research is to find out [why it is happening],’ said Van Rooij.
The research would be concluded within a few weeks, he said.

[Copyright Expatica News + ANP 2006]

Subject: Dutch news

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