Effects of Varying Light Intensities and Temperature Levels on the Growth of Gracilaria spp. Under Laboratory Condition
Description
This study aims to evaluate the best combination of light intensities and temperature levels on the growth of Gracilaria spp. Specifically, it aims to determine the significant interaction effect between light intensities and temperature levels on the growth of Gracilaria spp. under laboratory conditions. The Experimental set-up was conducted at College of Fisheries Laboratory and Research Station (CFLRS) in Brgy. Siguel, General Santos City for a period of 60 days. Eighteen (18) 3.5L glass tanks were used as experimental units and was stocked with 3g of Gracilaria spp. The study tested for six treatments with varying light intensity and temperature levels The data were analyzed using two-way ANOVA and comparison between significant difference and interaction were analyzed using post-hoc test (Tukey’s HSD). After the experiment, the highest mean body weight of Gracilaria spp. was obtained from Treatment III, with recorded value of 4.67g. Meanwhile, results also demonstrated that Treatment III obtained the highest weight gain with 1.67g. Likewise Similarly, Treatment III recorded the highest specific growth rate with 0.32% per day. Statistical analysis revealed that light intensity has a significant effect (p<0.05) and that there is no significant effect (p>0.05) on temperature. On the other hand, there is a significant interaction (p<0.0.5) between light intensity and temperature on the growth of Gracilaria spp. (MW, MWG, and SGR) after 60 days of culture. The study concluded that the best growth of Gracilaria spp. can be achieved of water at light intensity of 120 m-2 s-1 and temperature 30°C under laboratory condition.
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Institutions
- Mindanao State University