Abstract

PONTES DE MELO, ELMO et al. BEHAVIOR OF Pectinophora gossypiella (GELECHIIDAE) (PINK BOLLWORM) MALES MONITORED WITH PHEROMONE TRAP IN COTTON. Acta biol.Colomb. [online]. 2012, vol.17, n.3, pp.625-634. ISSN 0120-548X.

The objective of the present study was to evaluate the behavior of P. gossypiella males captured with pheromone-baited traps in cotton field. Three experiments were done during the 2001-02 and 2002-03 growing seasons using the Delta Opal cotton cultivar. The first experiment was related to the insect population captured during the crop cycle by of two commercially available Delta type traps, the second experiment was conducted to evaluate the efficiency of traps in capturing P. gossypiella males and, the third experiment assessed the nocturnal circadian rhythm. It was realized a descriptive analysis of the data collected to first and third experiment. Used in this second experiment consisted of comparing randomly selected groups, and the means were compared by t-test, the significance level was set at 5 %, and, the canonical correlation analysis was performed. The Delta pheromone trap was more efficient in capturing P. gossypiella than was the PET pheromone trap. Nocturnal activity peaks were found to be related with the time of year and it occurs between 11:00 p.m. and 2:00 a.m.

Keywords : Pink bollworm; delta trap; circadian rhythm.

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