Danos de moscas-das-frutas (Diptera, Tephritidae) em citros, manejados no sistema orgânico de produção/Damage caused by fruit flies (Diptera, Tephritidae) on citrus under organic production

• Published in: Revista Ceres 2014-09, Vol.61 (5), p.637
• Main Authors: da Silva, Fernando Felisberto, Redaelli, Luíza Rodrigues, Meirelles, Rafael Narciso, Dal Soglio, Fábio Kessler
• Format: Article
• Language: Portuguese
• ISSN: 0034-737X; 2177-3491

Fruit flies are the main pests of horticulture worldwide. Because they are considered key pests in citrus production, it is necessary to monitor them to avoid the direct damage. The objective of this experiment was to evaluate the population variation of Anastrepha fraterculus and the relationship of its population with damage in organic orchards of orange Ceu cultivar and tangor (C. sinensis x Citrus reticulata) cv Murcott. Data were collected over the maturation period, from January 2003 to September 2004, in the Cai Valley region, State of Rio Grande do Sul, Brazil. The number of fruit flies was recorded weekly by McPhail traps containing grape juice at 25%. Damage to the fruits were determined by the ratio between healthy fruits and fruit damaged by the flies. Meteorological records of temperature, relative humidity and rainfall were obtained from meteorological station 30 km away from the experimental areas. It was found that, larger populations of A. fraterculus, the predominant species in the region, were found under ideal conditions of rainfall.