Einfluß der relativen Feuchte auf die Wirkung von Methylbromid bei Khaprakäferlarven (Trogoderma granarium Everts) (Dermestidae,Coleoptera) |
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| Authors: | F El-Lakwah |
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| Institution: | (1) Biologische Bundesanstalt für Land- und Forstwirtschaft, Institut für Voratsschutz, Königin-Luise-Straße 19, 1000 Berlin 33, Dahlem |
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| Abstract: | The influence of relative humidity on the efficiency of methyl bromide to Khapra Beetle larvae (Trogoderma granarium Everts) (Dermestidae, Coleoptera)
Laboratory experiments were carried out at 30, 10 and 0 °C to investigate the effect of relative humidity during fumigation time on the susceptibility of Khapra Beetle larvae to methyl bromide. Experimental results at 30 °C show an increase in the susceptibility of the larvae to methyl bromide with a rise in the relative humidity. A significant differen in the susceptibility of the larvae was found at this temperature with a change in the relative humidity from 20–25% to 90–95%. At 10 °C the estimated c.t.-products for a given mortality are slightly higher at low humidity (35–40%) than at higher humidity (85–90%), however, no significant difference was found between these data. At 0 °C a variation in the relative humidity from 30–40% to 80–90% shows no significant effect on the susceptibility of the larvae to methyl bromide. |
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