Dengue virus, transmitted by Aedes aegypti mosquitoes, is the most important emerging viral disease, infecting more than 50 million people annually. Currently used sticky traps are useful tools for monitoring and controlling Ae. aegypti. Therefore, this study was conducted to evaluate the attraction of Ae. aegypti mosquitoes using various colors, materials and insecticides. The laboratory and field assessed the four different colors of ovitraps (blue, green, black and transparent). Among the tested ovitraps, the black ovitraps showed the highest number of eggs (348.8) in the laboratory and maximum eggs (80.0) in field trials. In addition, six different materials (casein, urea, yeast, fish meal, chicken meal and water) were also used to evaluate mosquito’s attraction. In our results, the highest number of eggs were collected with fish meal having 0.5% concentration in both laboratory (195.17) and the field (100.7). In laboratory trials, the Deltamethrin treated ovitraps (treated with Deltamethrin) significantly trapped and killed the highest percent of female Ae. aegypti (91.5%) compared to untreated (not-treated with Deltamethrin) ovitraps (3.3%). In field trials, the lethality was determined by installing 10 lethal ovitraps in one block and 10 untreated ovitraps in another block. The results indicate a significant reduction in eggs collected from the treated block (727 eggs) as compared to the untreated block (1865 eggs). The data also reveal that the ovitrap positive index (50) and egg density index (24.3) were also low in treated areas than in untreated areas, 83.3 and 37.3, respectively. It is concluded that the lethal ovitraps significantly reduced the Ae. aegypti population and thus could be considered an integral part of the integrated vector management (IVM) program.
whereas, 30-100% in vegetables (Syed et al., 1970;Sapkota et al., 2010). Tephritid genus Bactrocera is comprised of 50 extremely destructive polyphagous pest species. Among these, Bactrocera zonata (Saunders), the peach fruit fly, cause severe losses to over 55 fruit hosts, including mango, peach, apricot, guava, banana, apple and fig (White and Elson-Harris, 1992;Ghanim, 2009;Delrio and Cocco, 2010).The fruit flies favor laying eggs on hosts that pro-Abstract | Bactrocera zonata (Saunders), the peach fruit fly is a severe pest of many important fruits in Pakistan causing massive economic losses. Experiments were executed to reveal the ovipositional preference of B. zonata for four selected fruits belonging to different plant families, viz., banana (Musa acuminate), persimmon (Diospyros kaki), apple (Malus domestica) and tomato (Solanum lycopersicum). The study was performed under free choice conditions by exposing all the tested fruits in the same arena to B. zonata female adults. Results revealed that tested biological parameters were significantly affected by the tested host except sex ratio. However, banana was found the most preferred host with maximum number of pupae recovery (298 ), maximum emerged flies (185) followed by persimmon, apple whereas tomato was least preferred host with lowest number of pupae (06) and flies emerged (05) respectively. Thus, it is concluded that banana fruit can be used as natural host for rearing of B. zonata in the laboratory due to its consistent availability.
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