AHMADI , AHMADI 3rd Asian Conference on Science, Technology & Medicine 2019. In: Seminar Internasional.
|
Text
ABSTRACT_AHMADI.pdf Download (1998Kb) | Preview |
Abstract
This study contributes to the development of harvesting procedures for Nile tilapia under pond culture system. A total of 13 LED light traps (blue, green, yellow, orange, red, white and control) were used to examine phototactic response of Nile tilapia in the pond experiment. The traps were made of polyamide (PA) nylon monofilament (31.75 mm mesh size), fastened around two wire ring frames (490 mm) with a net height of 270 mm. A lamp was placed on the bottom of the trap. There were no significant differences in the CPUE (catch per unit effort) and YPUE (yield per unit effort) among light traps and control. The CPUEs for continuous, blinking light traps and the control ranged from 0.21 to 1.07, 0.14 to 0.79, and 0.57 fish trap-1 night-1, respectively. While the YPUEs for continuous, blinking light traps, and the control varied from 2.43 to 43.36, 1.00 to 27.21, and 10.50 g trap-1 trial-1 respectively. 105 individuals (2,376 g) consisting of 59 males (641 g) and 46 females (1,735 g) were analysed. The body size of catch ranged from 43-193 mm (97.14±34.61 mm) total length and 1-133 g (22.98±27.87 g) weight. Nile tilapia grew isometrically and fish are in good condition (K = 1.79). Positive group responses of fish were more pronounced in the middle size classes between 90 and 99 mm total length. Nile tilapia responded positively to all colors of light tested. In addition, efforts to sample Nile tilapia from the wild sources may benefit from this study.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Subjects: | S Agriculture > SH Aquaculture. Fisheries. Angling |
| Depositing User: | Mr Arief Mirathan |
| Date Deposited: | 21 Jun 2019 01:11 |
| Last Modified: | 21 Jun 2019 01:11 |
| URI: | http://eprints.ulm.ac.id/id/eprint/6074 |
Actions (login required)
 |
View Item |