SciELO journals
Browse
1/1
7 files

Spatial distribution and control levels of Anastrepha spp. (Diptera: Tephritidae) in guava orchards

dataset
posted on 2019-08-14, 03:03 authored by JOSÉ NICÁCIO, ISAIAS DE OLIVEIRA, MANOEL A. UCHOA, ODIVAL FACCENDA, ALFREDO R. ABOT, MARCOS G. FERNANDES, FLÁVIO R.M. GARCIA

Abstract: This study aimed to know the patterns of spatial distribution of Anastrepha spp. and establish a criterion for determining the appropriate time for pest control. For this, 90 McPhail traps were used as Sampling Units (SU) divided into three commercial orchards of Novo Milênio guava with a total area of 14 ha. Traps were interspersed between the rows of plants, systematically in the orchards, hung and baited with 5% hydrolyzed corn protein with weekly collections. We caught 8,170 Anastrepha spp. in 840 SU. The mean infestation index was compared to the three types of distribution: random, uniform, aggregate, and fit by the theoretical frequency distributions of Poisson, negative binomial and positive binomial. The populations of Anastrepha presented aggregate distribution according to the mean variance method (I), tested by distance from randomness. The economic damage risk potential of Anastrepha spp. was associated with the aggregate distribution behavior. The most appropriate moment for the use of control techniques is when reaching 20 flies by the negative binomial. On the other hand, number of fruit fly adults per trap per day (FTD), underestimates population index, which will allow population growth, leading to risk of crop production loss.

History

Usage metrics

    Anais da Academia Brasileira de Ciências

    Licence

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC