Estimation of populations and sterility induction in Anastrepha ludens (Diptera: Tephritidae) fruit flies

Periodo de realización: 2014/06/01 al 2014/01/01

Tipo: Artículo científico

Resumen: "The relationship between different release densities of sterile flies and fly trap captures, expressed as flies per trap per day, in the monitoring of Anastrepha ludens (Loew) populations was evaluated in mango orchards. The induction of sterility in fertile females was evaluated using different ratios of sterile: fertile males under field cage conditions. A direct relationship between recaptured flies and densities of release sterile flies was found. However, trap efÞciency, expressed as percentage of recaptured ßies, decreased as the density of released ßies increased. Sterility induction was positively correlated to the ratio of sterile: fertile flies. A significant difference in egg fertility among treatments was observed. The trajectory of sterility induction slowed down after a sterile: wild ratio of 30:1, which suggests that this ratio could be appropriate in an sterile insect technique program with A. ludens. Sterility induction was greater when only sterile males were released than when releasing both sterile males and females, but the differences were not significant. Our Þndings contribute to a better interpretation of ßy captures obtained from the Þeld trapping networks, and to an improvement in the efficiency of sterile insect technique against A. ludens fruit ßies, through the implementation of more rational sterile fly release densities."

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