Acrobasis advenella is an oligophagous species feeding on plants of the Rosaceae family. The differences in concentrations of host plant quality components, above all primary metabolites and the presence or absence of secondary metabolites, directly affects herbivore growth and development. The objectives of this research were to determine the food preferences of 1st instar larvae according to the chemical composition of host plants. The highest acceptance of rowan in the free choice test by 1st instar larvae, as compared to hawthorn and black chokeberry, is positively influenced by the high content of total sugars and phenolic acids. The conclusion to be drawn from the results is that the differences in food choice by 1st instar larvae feeding on fruits could have been due to the different chemical compositions of the fruit.
The present study determined the impact of Acrobasis advenella caterpillars feeding on the content of total proteins, specific proteins and soluble proteins in the inflorescences of three host plant species: Aronia melanocarpa, Sorbus aucuparia and Crataegus monogyna. The study demonstrated that the feeding of A. advenella caterpillars increases the total, specific and soluble protein contents in the inflorescences of these three plants. Significant increases in the content of these compounds were observed in the infested inflorescences of black chokeberry.