Características biométricas e estado do fruto, influenciando a abundância de insetos (Diptera: Tephritidae e Drosophilidae) e parasitoides (Hymenoptera: Braconidae) em frutos de taperebá em Manaus – AM

Abstract

Many insect especies were registered interacting with S. mombin, some have economical impications in the fruits. In this paper we discuss the insect abundance under influence of biometrical traits of fruits and fruit peel condition. 400 fruits (3,73 kg) were sampled from two locations on the urban area of Manaus, Amazonas state. About the traits, measures of weight were taken, and observed the stratification, peel condition, ripening state and which tree the fruit came from. We individualized the sampled fruits and the Tephritidae puparia to better observe the reared insects. Were reared 4.938 insects from six main groups, Tephritidae: 44 Anastrepha antunesi and 345 Anastrepha obliqua, Braconidae: 484 Doryctobracon areolatus and 155 Opius bellus, Drosophilidae: 3.333 Zaprionus indianus and 411 Drosophila spp.. Our results allows to presume the relation between insects abundance and average weight fruits, damaged fruits, ground sampled fruits and which tree the fruit was originated. Between fruits above the average weight the abundance of insects was higher in the heaviests. For the fruits, insect activity is another damaging (or damaging enhancer) factor besides the fall from the tree. The traits and peel condition discussed in this paper has influence in the insects abundance, except for Drosophila spp., A. antunesi and A. obliqua. Observe individualy the tree characteristics showed an important step to explain infestation and abundance of insects exploring fruits. Additional fruits characteristics than the ones chosen in this paper could be necessary, for A. antunesi and A. obliqua in especial.