Field Study of the Effectiveness of Three Different Homemade Trapping Devices of Fruit Flies in Male Annihilation Technique

Most of the countries are unlikely to be able to estimate losses due to fruits and vegetables specifically caused by economically important fruit fly species Because of these traits, a rapid response is critical to contain or even eradicate these exotic fruit fly outbreaks by planning to reduce the cost of the fight with all suitable means. Thus, the study of these homemade trapping devices showed that the average catches of Bactrocera invadens obtained from homemade open-bottom dry traps of mineral water translucent plastic bottles of 1.5 L, 5 L, and "Sentrap" Open-top Dry local Trap (plastic prototype improved by SENCHIM, an agrochemicals industry based in Senegal) were compared to the conventional trap "Multilure" (Better World Manufacturing, Inc.., Miami, FL). Results show that no significant difference was found when "Multilure" was compared to the 5 L plastic bottle trap. The study of the relationships between catches and type of trap was significant for all of them. Sentrap, "Multilure" and 1.5 L bottle trap exhibited a very high significant dependency relationships (r = -0.969**, r = -0.903** and r = -0.801**; respectively and p< 0.01). And the 5 L bottle trap was significant with r = -0.750* and p< 0.05. Thus, in case of absence of conventional traps, the plastic bottle of 5 L could, therefore, be used as an alternative and its basal part painted in yellow should increase its efficiency. Current control measures against fruit flies mainly incorporate the use of insecticides as a cover spray or bait and targeting the adult flies. The use of insecticide is not a suitable control measure once the female fly has deposited egg inside the fruit meso carp, because the chances of affecting the larvae inside the fruits is very slim. Also, due to simple design and less time needed for servicing "Sentrap", increasing its volume and openings and fixing firmly the upper part with a lid screw might improve its efficiency.