- 期刊
- OpenAccess
Effects of different shading rates on the growth and water quality of hard clam (Meretrix lusoria) aquaculture
摘要
To understand the effects of installing solar panels on the water quality of clam ponds in the Taixi Mariculture Research Center of the Fisheries Research Institute, COA, Taiwan, from July 2017 to June 2018, hard clam (Meretrix lusoria) aquaculture was conducted with different shading rates (0%, 30%, 50%, 70%, and 100%) using shading nets. The body weight of the clams and the water quality of the clam pond were sampled and measured once per month during the study. The results showed that the rate of weight gain of the clams in the experimental groups with a shading rate of 30% and 50% was no less than 70% of that in the control group (shading rate of 0%). However, once the shading rate exceeded 50%, the brightness of the water decreased rapidly due to different shading. The results of the water quality test showed that temperature, dissolved oxygen (DO), and chlorophyll a were inversely proportional to the shading rate, and salinity, phosphate, total phosphorus (TP), and total Kjeldahl nitrogen (TKN) were proportional to the shading rate. Chlorophyll a was the main factor affecting the water quality of the clam pond. When the shading rate exceeded 50%, the water quality of the clam pond started to change significantly. Therefore, when installing solar panels in a clam pond in the future, the shading rate should not exceed 50%.