American Faulbrood regularly causes heavy damage in hives. "I consider the disease as an unresolved problem for decades," said deputy director of the regional institute of beekeeping Hohen Neuendorf at Berlin. Elke GenerschIn recent decades, the number of households has fluctuated Germany As a result, between 140 in 2018 and 440 in 1998. On a withdrawal of epidemic that the numbers do not tighten: there are regular ups and downs of notifiable declarations, but they have been harmless to humans since the 1950s, says the scientist.
At the Friedrich Loeffler Institute on the island Riems at Greifswald looks Marc Schäfer a tendency to decrease the number of cases. He heads the National Reference Laboratory for Bee Diseases at the Federal Center for Animal Health Research. The decline in the number of households leads shepherd strengthen monitoring. "Surveillance has become better, including the education of beekeepers," says the scientist. For example, beekeepers have often selected – or randomly selected – samples for the early detection of brood disease.
spore can survive 30 years or more
the epidemic is caused by a bacterium with the pseudonym Paenibacillus larvae. Get those spore in a hive and are given to the larvae when they feed them, they die. If the workers do not remove the dead offspring, millions of new ones are created because the corresponding brood cell has already been covered with wax. sporeThey are extremely resilient and can survive for 30 years or more.
Bee disease: How dangerous is American faulbrood?
A beekeeper can shepherd According to not easily and immediately see what happens. If suspected American Faulbrut, he must inform the veterinary authorities. Parts of the suspicion of the official veterinarian, it locks the apiary and takes samples. If suspicion is confirmed in the laboratory, a restricted area of at least one kilometer around the outbreak is established. colonies of bees can not be removed from or within the restricted area.
Damage is not replaced
The procedure to be followed varies from state to state: in some countries, as Brandenburg the affected people must be killed. The payment of the Tierseuchenkasse does not compensate the damages, admits shepherd at. Elsewhere, restoration of the people is allowed, but not always possible. For this, the bees are shaken in a box cleaned on new frames. When they start building honeycombs, they are taken away several times, until they are likely to build them. spore stick more.
Wasps and bees: prejudices in the check
Where do they come from? spore?
With drugs is the epidemic however, antibiotics are in the EU unauthorized. "Antibiotics kill those spore not off, "says shepherd, "Where the spore Science does not yet answer thoroughly. "Bees, even foreign ones, should only be sold with a health certificate." Honey could be imported spore included. "But what beekeeper feeds honey?", Says GenerschMost often, you have to survive the flight: healthy bees meet weakened people and steal their honey instead of collecting nectar. With that, they infect their offspring.
Friedrich Karl Tiesler, Member of the Advisory Committee for Livestock Association of German beekeepersThe infection with foreign honey does not seem so weird. Neglected apiaries could also be a source. Thanks to improved diagnostic methods in recent years, however, it is possible to control the brood.
From RND / dpa