Distribuição espacial e temporal de Anastrepha fraterculus (Wied.) (Diptera: Tephritidae) na cultura da videira.

Abstract

The South American fruit fly Anastrepha fraterculus (Wied) is a major pest species of economic importance in vineyards in southern Brazil. The study evaluated the spatial and temporal distribution of the South American fly the fruit for two seasons (2013/14 and 2014/15) in two commercial vineyards cv. Moscato white. The study was conducted with traps made with transparent plastic bottles of polyethylene terephthalate, with food bait CeraTrap® lure (without dilution). The evaluations were performed every two weeks, counting the total number of adults caught per trap, which were identified. Analyses consisted of a fluctuation in the correlation between insects and climatic elements in exploratory data analysis through classic descriptive statistics and semivariograms, and the spatial and temporal distribution was evaluated using dispersion index and aggregation and thematic maps, employing the interpolation IDW . The fluctuation of the South American fly the fruit was not affected by climatic factors. The density of the flies was higher in the grapevine ripening period. The semivariograms showed that most of the reviews was pure nugget effect, indicating absence of spatial dependence of the data. Through the dispersion indexes and aggregation and thematic maps, it was observed that A. fraterculus (Wied) has aggregated spatial distribution, with invasive behavior of edges to the center.