Dinâmica populacional de brocas e comunidade Hymenoptera parasitoides em pomar de atemoieira com vegetação de entorno

Abstract

Performing a survey of parasitoid insects and studying the dynamics of pest infestations in fruit trees is of great importance to determine which management tactics are most suitable to prevent these phytophages from reaching the level of economic damage. The objective of this work was to evaluate the influence of the surrounding vegetation on the populations of borers of anonaceae and their parasitoids. The survey was carried out through the collection of fruits, in a commercial orchard of atemoia. Fruits were collected that showed symptoms of attacks by the fruit borers and / or seeds. The survey was also carried out using traps of the Malaise type, which were installed in the atemoia orchard and in the surrounding vegetation. The collected fruits were placed in plastic containers and kept in an air-conditioned room until the emergence of borers and/or parasitoids. The drills obtained were counted and the insect infestation intensity was determined with the values. The parasitoids captured in the Malaise traps and those that emerged from the fruits were counted, fixed in 70% alcohol and subsequently identified. It was found that the intensity of borer infestation varied according to the season, with the fruit borer with greater infestation in the summer and the seed borer in the spring. In the Malaise traps, parasitoids belonging to the families Ichneumonidae, Braconidae, Figitidae, Bethylidae, Dryinidae, Chalcididae and Evaniidae were captured, being found in greater numbers in the surrounding vegetation. From the collected fruits, parasitoids of the genus Apanteles sp.