Courtship and Mating Behavior of the Aphid Parasitoid Praon volucre: Effects of Host Association and Behavioral...

Mating behavior plays a critical role in the reproductive success and population dynamics of insects. Praon volucre is a widespread, broadly oligophagous aphid parasitoid and an important natural enemy in agricultural and natural ecosystems. The present study provides the first detailed characterization of the courtship and mating sequence of P. volucre, examining the effects of host association and behavioral lateralization on mating performance. Behavioral observations were conducted on virgin P. volucre adults emerging from two aphid hosts, Macrosiphum euphorbiae feeding on Citrus aurantium and Aulacorthum solani feeding on Malva neglecta. Males from both host-derived populations exhibited a left-side mounting bias, which was associated with faster mate detection, reduced courtship duration, and higher mating success. Mating behavior remained largely stable across host origins, indicating a high degree of behavioral stability. This behavioral robustness, combined with enhanced mating efficiency driven by lateralization, underscores the suitability of P. volucre as a biological control agent. The results have practical implications for mass-rearing and release programs, suggesting that a potential host switching during rearing is unlikely to compromise reproductive performance.