Browsing by Author "Johansson, Christina"
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Johansson, Christina; Pettersson, Jan; Niemeyer, Hermann M. (Czech Academy of Sciences, 1997)In olfactometric experiments a wingless adult of Sitobion avenae was attracted by odours of a wingless adult of Rhopalosiphum padi feeding on a wheat plant. When the stimulus consisted of either a wingless R. padi without ...