Few empirical studies have directly explored the association between Buchnera aphidicola (Enterobacteriales: Enterobacteriaceae), the primary endosymbiont of aphids, and the life history strategies of aphid parasitoids. A series of paired-choice experiments were conducted to explore the preference of the parasitoid Lysiphlebus ambiguus Halliday (Hymenoptera: Aphididae) for symbiotic and aposymb...

The study aimed to evaluate the responsible traits of preference Aphis fabae Vicia faba cultivars and their stability in multi-environment field tests. experiment was carried out at Institute Forage Crops (Pleven) during period 2016 2018. Aphid infestation assessed by recording number per plant pod formation, while chemical composition determined standard Weende system methods. Canonical corres...

Antagonistic coevolution between hosts and parasites can result in negative frequency-dependent selection and may thus be an important mechanism maintaining genetic variation in populations. Negative frequency-dependence emerges readily if interactions between hosts and parasites are genotypespecific such that no host genotype is most resistant to all parasite genotypes, and no parasite genotyp...

In this study, the orientation of two different predator species [(Coccinella septempunctata L., Hippodamia variegata (Goeze) (Coleoptera: Coccinellidae)) to aphids [Aphis fabae Scopoli and Acyrthosiphon pisum Harris (Hemiptera: Aphididae)] was investigated. Y-type olfactometer which made glass material with one entrance exit openings used in study. Different applications were applied ends pred...

Myzus persicae is a devastating pest affecting potato production. Intron-containing hairpin RNA (ihpRNA) silenced the odorant-binding protein 8 (OBP8) for enhanced protection against in potatoes. OBP8 was isolated from M. persicae, sequenced, with allotment of GenBank ID. ERNAi used to design siRNA targets no off-targets. Multiple Sequence Alignment show resemblance Acyrthosiphon pisum, Rhopalo...