Grupos funcionais de insetos e sua relação com a densidade de adubação verde

Abstract

The study objective was to evaluate the relationship between the different densities of cover crops, with the diversity and dominance of insect families in their respective functional groups. This study took place in the experimental area of the Federal University of Fronteira Sul, located in the municipality of Laranjeiras do Sul - Paraná. The experimental design was organized in randomized blocks with six treatments (vetch, radish and black oat intercropping sowing densities: 0, 40, 80, 100, 120 and 160% of the recommended dose) and four meals. For the evaluation of the insect fauna, the experiment method with Moericke traps was used. The captured insects were separated at the family level and organized into the following living groups: parasitoids, detritivores, phytophages, pollinators and predators. A total of 19263 insects distributed in 16 predator families (9137 individuals), 18 parasitoid families (1210 individuals), 4 pollinator families (162 individuals), 24 phytophagous families (8135 individuals) and 9 detritivore families were analyzed. (619 individuals). individuals). In general, there was a direct relationship between the highest diversity indexes and the highest green manure densities for all auditory groups, except phytophagous ones. Thus, it is possible to conclude that higher densities of green manure plants favor entomofauna diversity, allowing an increase in ecosystem services promoted by insects.