Distribuição e desempenho de Tuta absoluta no dossel do tomateiro

• Autor(a) principal: Galdino, Tarcísio Visintin da Silva
• Data de Publicação: 2012
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/3938
• topic: Traça-do-tomateiro; Solanum lycopersicum; Manejo integrado de pragas; Tomato pinworm; Solanum lycopersicum; Integrated pest management; CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOSSANIDADE::ENTOMOLOGIA AGRICOLA

Studies on spatial distribution of pests and performance in the canopy of plants improve the quality of sampling plans and increase the efficiency of control methods. Thus, this study aimed to evaluate the distribution and biological performance of developmental stages of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) in the canopy of tomato plants. The higher oviposition of T. absoluta occurred in the leaves of the median part and between the apical and median part for plants in the vegetative and reproductive stages, respectively. In the beginning of the larval stage the number of caterpillars was higher in the leaves of median part of tomatoes plants. Over time the number of caterpillars decreased in the median leaves and increased in the apical leaves. It was found that the caterpillars which attack the fruits originate mainly from the leaves. The movement of caterpillars from the leaves to the fruit happened when they reached the third instar. The primary site of pupation for T. absoluta was the soil, especially up to 1.3 mm deep. T. absoluta pupation was higher in soil with mulch. The net reproductive rate (R0) of T. absoluta was higher when the insects had developed in the leaves of median part. Most oviposition of T. absoluta occurred in places where this specie had higher net reproductive rate.