The Effect of Water Quality Variables on Vannamei Shrimp Productivity (Litopenaeus Vannamei) in the Mining Area of the Sungai Pinang Village, Lingga Timur District, Lingga Regency, Riau Islands Province

Abstract

Abstract Sungai Pinang Village is one of the village in East Lingga Region, Lingga Regency, Riau Islands Province, which is developing into a fisheries area. The development of the shrimp pond cultivation business is growing rapidly, but on the other hand, the quality of the waters also changes. Water quality is very influential on the growth of vannamei shrimp (Litopenaeus vannamei) in ponds which lead to high and low productivity of vannamei shrimp. Therefore, the research is directed at examining water quality variables that influence the productivity of vannamei shrimp in ponds. The study was carried out in an aquaculture area that was in operation in a pond in Sungai Pinang Village, East Lingga District, Lingga Regency, Riau Islands Province by interviewing respondents to obtain pond productivity primary data through a questionnaire submission, while technical data was obtained by direct measurements in the field and water sampling for analysis in the laboratory. As independent variables are water quality, namely temperature, dissolved oxygen (DO), salinity, pH, total suspended solids (TSS), turbidity, nitrate, nitrite, phosphate and total organic matter (BOT), while the variables are not free is the productivity of vannamei shrimp. The selection of the ‘best’ multiple regression model is based on the backward method. The results showed that the productivity of vannamei shrimp in the range of 133.3–3,000.0 kg/ha with an average of 690.38 kg/ha. Water quality variables that have a positive effect on the productivity of vannamei shrimp are nitrate and phosphate, while the water quality variables that negatively affect the productivity of vannamei shrimp are pH and TSS.