Levantamento da diversidade de insetos na cultura da videira (cv. Isabel Precoce) em Teresina-PI

Abstract

Viticulture (Vitis labrusca L.) has been expanding in the state of Piauí, driven by favorable climatic conditions. However, there is little information about the insect fauna associated with this crop in the Meio-Norte region, which limits the adoption of effective management strategies. This study aimed to survey the diversity and population fluctuation of insects in a vineyard of the Isabel Precoce cultivar, located in Teresina-PI, over two production cycles (2023 and 2024). The experiment was carried out at the Experimental Field of UESPI (CCA/UESPI), under a tropical subhumid climate (Aw’), in a vineyard with 72 plants trained in a trellis system, pruned in September 2023 and April 2024. Monitoring began after foliage development using five yellow sticky traps randomly installed in the vineyard, along with manual collections. Sampling was conducted weekly for 90 days in each cycle. Insects were identified to the family level. A total of 6,616 individuals were captured, distributed across seven orders, with Cicadellidae, Formicidae, Apidae, and Platygastridae standing out. In the first cycle, corresponding to the dry season (September to December 2023), Cicadellidae, Formicidae, and arapuás (Apidae) predominated, causing damage to grape clusters. In the second cycle, post-rainy season (May to July 2024), greater diversity was observed, with a predominance of Platygastridae, especially parasitoid micro-wasps of the genus Telenomus. Population fluctuation was evident, with an increase in insects during the post-rainy period (3,807) compared to the dry period (2,309). The results provide important support for integrated pest management practices in viticulture in the Meio-Norte region of Brazil.