Abstract:
A total of 5 circle-shaped traps were constructed with the same dimensions and materials. Four continuous light traps and a control (trap without lamp) are simultaneously tested in the tarpaulin pond. The trap was made of Polyethylene (PE) nylon multifilament, was fastened around two wire ring frames (wire dia. 2 mm); 1540 mm perimeter, was placed on the top and bottom (490 mm diameter). The net height was 270 mm. Each trap had four entry holes located on each side of the trap with about 5 cm opening mesh. The upper part used for taking out the catch, while the bottom part for attaching the lamp.
Each of the light traps was assigned with 0.9 W LED (Light Emitting Diode) Torpedo light
(215 50 mm, Fishing Net Industry Co. Ltd. China) containing blue (8.4 ± 1.65 lx), orange (42.5 ± 2.68 lx), yellow (332.0 ± 37.14 lx), red (376.4 ± 93.40 lx), and green (3116 ± 342.74 lx), powered by 3 V dry-cell batteries, respectively. The intensity of each lamp was measured using a light-meter LX-100 (Lutron, Taiwan) at Basic Laboratory of Faculty of Mathematic and Natural Science Lambung Mangkurat University. Experimental data were presented in the form of tabulation.
