1. Introduction Because pyrethroid pesticides work well at controlling pests, they are frequently employed in agriculture. But there's growing concern about their effect on organisms that aren't their intended targets, like bumblebees. These substances have the potential to impact bees' neurological systems, which could result in decreased foraging capacity, poor behavior, and colony collapse. However, it is known that trypanosome parasites can infect a number of insect species, including...