Anzeiger für Schädlingskunde, Pflanzenschutz, Umweltschutz (1991) 64, 105-111
I. Iglisch (1991)
Bekämpfung von Blatta orientalis L. (Blattodea, Blattidae) in einem Schweinezuchtstall mit Hilfe des 'Plattenverfahrens'
[Control of Blatta orientalis L. (Blattodea, Blattidae) in a swine breeding unit by means of the 'Cover Method']
Anzeiger für Schädlingskunde, Pflanzenschutz, Umweltschutz 64 (6), 105-111
Abstract: Testing of the Cover Method (extermination of a Blatta orientalis population that had persisted in a swine breeding unit for decades) has shown that a specific behaviour of this cockroach species has to be considered. This behaviour deviates from that which is characterized by returning to the same hiding places and is characterized by aggregation pheromones. It is characterized by returning to an environmental site and refers to local aggregation units (adults and developmental stages) within the population of an indoor environment.
Where insecticidal varnish (chlorpyrifos) is used, the risk of contamination for breeding stock and farrows is eliminated by the creation of artificial resting places for B. orientalis which can be easily manipulated. The positioning of the hiding places must be adapated to the sites of cockroach infestation in the respective room. Neither the number of covered artificial hiding places nor the relation between the total surface area of the room and the surface area of artificial hiding places painted with insecticidal varnish is decisive for extermination. It is the creation of artificial resting places immediatedly in front of the natural hiding places of the cockroaches.
Unless they can be positioned right in front of the natural hiding places of the cockroaches, it is important that the artificial hiding places be placed at suitable sites between the natural hiding places and the nearest material on which they feed. If this is not feasible, e.g. because it would involve a risk of contaminating farm animals, local foci of infestation will be impossible to eliminate by this method, on account of the fact that the cockroaches return to defined sites.
In the pigsty in question, the problem of the site specificity of B. orientalis could be resolved when their traditional resting places near the feeding troughs could be completely covered, without exposing the swine to contamination. This was accomplished by using zinc-plated metal sheets to whose interior surface insecticidal varnish had been applied. The detachable metal sheets were fitted to the wooden bars supporting the roof which ended close to the feeding troughs.
It was possible, at a minimum expenditure on time, technology and material, to minimize cockroach infestation within two years and to eliminate the pest after another year, while only a small surface area in relation to the total surface area in the pigsty that had been frequented by the cockroaches had to be treated with insecticidal varnish.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: German)
Link to article at publishers website
Research topic(s) for pests/diseases/weeds:
control - general
population dynamics/ epidemiology
Pest and/or beneficial records:
Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
---|---|---|---|---|
Blatta orientalis |