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The feeding of parasitoid wasps is a forcible factor in ensuring the efficiency of biological control agents. The quality of natural resources can affect different aspects of morphology, biology and physiology of parasitoids which are linked to their fitness and fecundity. The logic behind the experiment was to study the effect of different concentrations of royal jelly (RJ) solution, on the biology of Trichogramma brassicae Bezdenko (Hymenoptera: Trichogrammatidae) with focus on rate of parasitism and morphology traits (wing size and shape variation) under laboratory conditions. Results showed that feeding with 0.5% gml royal jelly/honey water solution have increased rate of parasitism (mean= 75.06%± SE 6.03, n=15). The lowest rate of parasitism occurred in females fed without RJ (mean= 46.26%± SE 8.03, n=15). There were significant differences in weight matrices as shape variables, but according to independent sample t-test, we did not find any significant difference in centroid size (as size variable). Enhancing nutritional supplements has been able to influence some biological characteristics of T. brassicae. We argue that there was beneficial effect in royal jelly on morphological and biological traits in parasitoid wasp.

The effect of royal jelly on some biological and morphological characteristics of Trichogramma brassicae (Hymenoptera: Trichogrammatidae)