[Occurrence, distribution and control of cockroaches in the East German district of Rostock].

The German cockroach (Blattella germanica) is the prevalent species in the district of Rostock. There was also an occurrence of Blatta orientalis and, in one case, of Periplaneta australasiae. Periplaneta americana is occasionally introduced from warmer regions of the globe via containers. Extent and intensity of infestation of many buildings has increased making large-scale control measures necessary. Most control measures have been taken in food industry enterprises. The quantity of cockroach control increases with growing population density.