Enlarge?
Click on the photo.
The Zastlerbach and Krummbach, including their small tributaries, were exempted from the general decree and are released for use again. The connecting waters from the Brugga to the Zastlerbach have to remain without water supply to prevent the spread of the disease.
Despite the first successes of the containment measures, cancer pathogens are still effective in the Krebsgraben near Kappel-Neuhäuser and in the lower reaches of the Brugga, according to the RP. The pathogens, which are harmless to humans, endanger the protected and very rare jackdaw cancer there. This autumn, the study of the endangered species was resumed in order to follow the development of the disease and to adjust protection and containment measures. The results for the second half of the year are now available. Accordingly, dead jackdaws that were infected with the crustacean pathogen continued to be found in the Brugga. Unfortunately, therefore, no all-clear could be given, according to the RP.
The crayfish pathogen comes from the invasive crayfish, which has not yet been identified in the Brugga water system. As announced by the RP, the experts are working on a solution to the problem and will, if possible, react with further measures to combat the source of infection.
The crab plague broke out in the Brugga in March 2019 and spread rapidly in the lower reaches of the water. The regional council initiated immediate measures to preserve the threatened cancer population, which are already working: the drainage of side streams prevented the spread of the disease in the Zastlerbach and its side waters. A crab guard in the Brugga prevents infected crabs from migrating to the upper reaches of the stream. The Lower Water Authority at the Breisgau-Hochschwarzwald District Office has issued a ban on entering the Brugga and its tributaries.
Background information:
Crayfish plague is a deadly, highly contagious disease in native crayfish that is triggered by a fungus-like pathogen, Aphanomyces astaci. The stages of transmission of crab plague, known as spores, can be introduced into a body of water by any moist object that has come into contact with contaminated water, such as rubber boots, nets and fish traps, as well as the damp fur of dogs or the plumage of water birds. There is no effective treatment or vaccination against cancer plague. The measures taken on the Brugga are aimed at containing the spread of the disease. The duration of the epidemic cannot be foreseen, as only a few spores in the water are sufficient to cause the cancer plague to flare up again.
(Press information: Freiburg Regional Council, December 21, 2020)
More articles from Medienservice (01)
Every author of a report (company, association, person …) also has HIS own “extra newspaper” at REGIOTRENDS! At the top click on the red name behind “More posts from” You will already see ALL of his retrievable messages in our brand new internet newspaper.
–
