Evaluation of traps and attractants for mass trapping of African invader fly (Bactrocera invadens) on mango in southwest Nigeria

ABSTRACT

 

Mass trapping has demonstrated to be a powerful tool in the control of fruit flies, its application in African countries has currently increased especially as a control method.

This study evaluated the efficacy of two traps (conventional  Lynfield Trap(LT) and Modified Lynfield Trap(MLP) and two lures (Methyl Eugenol (ME) and Protein Bait of Brewery Waste(PBBW)) for mass trapping  Bactrocera invadens  Drew, Tsuruta, & White (Diptera: Tephritidae) on mango (Mangifera indica L.) during 2014 fruiting season in  three selected  locations in Ibadan, Southwest Nigeria.

Results showed no significant difference (p>0.01) between the trap types using methyl eugenol attractant, although the Modified Lynfield Traps (MLT) recorded highest catches of B. invadens. Methyl eugenol was significantly (p <0.01) more effective than hydrolyzed protein bait from brewery waste in mass trapping Bactrocera invadens in the three locations of the study. Bactrocera invadens population was highest at the peak of mango ripening (June) in all the locations. Modified lynfield trap with Methyl eugenol was the most effective in trapping B. invadens.  Consequently, there are significant differences among the trap types and the attractant efficacy, so suitable choice of trap and lures will enhance the mass trapping results. The use of Protein bait of brewery waste and modified lynfield trap for monitoring and population suppression of B. invadens shows great promise in Nigeria.

Key words: Mass trapping, mango, traps, attractant, fruit fly