The present study investigated the efficacy of solid male lures viz., cuelure (C-L), methyl eugenol (ME) and tri-med lure (TML) formulated with insecticide for the capture of Tephritid fruit flies in three different green areas of Bangladesh. We also evaluated non-target attraction effects to traps baited with these male lures. Traps were placed at nine locations in each of three experimental fields of Savar, Dhaka, Bangladesh during May-September, 2015. The experimental areas were i. Atomic Energy Research Establishment (AERE) colony, ii. AERE office campus, and iii. Jahangirnagar University (JU) campus, comprising agricultural fields, backyard gardens and mixed plantation. The flies were collected at weekly interval over 18 weeks. Total capture of Zeugodacus cucurbitae (Coq.), Bactrocera dorsalis (Hendel), Zeugodacus tau (Walker), and Bactrocera zonata (Saunders) were determined. The number of non-target insects attracted to different lure baited traps was also recorded. The prevalence of Dacine fruit flies was significantly higher at the JU campus comprising 98.41% B. dorsalis (538.05±62.28 fly/trap/week (FTW)) captured by ME. The comparatively higher number of Z. cucurbitae, and Z. tau trapped by C-L from AERE office campus, and JU campus, respectively. No Bactrocera spp. was attracted to the TML. Saprophagous non-targets mostly Diptera, Drosophilla, Milichiidae, Hymenoptea (black ants) were abundant in traps baited with C-L and ME. It was revealed that the response to lures was species-specific. Tested solid lures and DDVP strips did not exert any detrimental effects on non-target beneficial insects and were found effective for mass-trapping of Dacine fruit flies.

The research was conducted for 120 days from 01 March 2019 to 30 June 2019 at Saver, Doshaid the peri-urban area near Dhaka city. The objective of the study was to assess the growth performances of tilapia and vegetable production in the wish pond and wish pond-aquaponics systems. The initial length and weight of tilapia juvenile (Oreochromis niloticus) of 5.17±0.14 to 5.15±0.12cm and 3.24±0.30 to 3.35±0.13g were stocked at the rate of 200 fish/m 3 pond area in wish pond aquaponics and wish pond system, respectively. The Brinjal, chilli and mint were planted in both wish pond and wish pond-aquaponics systems. A commercial floating pellet feed of 30% protein was fed the fish at the rate of 5% body weight twice daily. Both the wish pond-aquaponics and wish pond waster was aerated with air pump and stones. The wish pond-aquaponics water was filtered through the vegetable media but wish pond water was not such filtration system rather partial water change was done in each month. The survival rate and total production of fish were higher (89.17±3.82%, 34.88±2.22 tons/ha/120 days) in wish pond-aquaponics system than the wish pond system (76.67±2.08, 26.33±0.87 tons/ha/120 days). Moreover, the vegetables production was also found higher in wish pond-aquaponics system (Brinjal 40.97±5.25, Chilli 9.54±0.84 and Mint 12.81±1.22) than the wish pond system (Brinjal 30.58±2.06, Chilli 7.92±0.16 and Mint 10.08±0.29). Water quality and nutrient utilization was comparatively better in wish pond-aquaponics system as the water was filtered by brick lets and plant roots and nutrients utilized by the plants which was absent in wish pond system. Therefore, the wish pond-aquaponics system performed better than the wish pond system and proved the system is environmental friendly and sustainable.