PENGARUH VARIABEL KUALITAS AIR TERHADAP PRODUKTIVITAS UDANG VANAME (LITOPENAEUS VANNAMEI) DI KAWASAN PERTAMBAKAN DI DESA SUNGAI PINANG, KECAMATAN LINGGA TIMUR, KABUPATEN LINGGA, PROVINSI KEPULAUAN RIAU

Abstract

Sungai Pinang Village is one of the villages in Lingga Timur District, Lingga Regency, Riau Islands, which is developing into a fishery production center. The development of aquaculture business, especially shrimp farming has grown rapidly, but on the other hand, there is a change in the quality and quality of the waters. Water quality is very influential on the growth of vaname shrimps (Litopenaeus vannamei) that are kept in ponds so that the impact on high and low productivity of vaname shrimps. Therefore, this study examined several variables of water quality that affect the productivity of vaname shrimp in ponds. This research was carried out in a fishpond area that is currently operational in Sungai Pinang Village, East Lingga District, Lingga Regency. The method used is the survey method and interviews with respondents in the Sungai Pinang village through the submission of the questionnaire. This interview is needed to get primary data on-farm productivity. While the water quality data obtained by direct measurement at the pond location and pond water sources, by taking water samples, which are then analyzed in the Aquatic Biology laboratory. As independent variables are water quality, namely temperature, dissolved oxygen (DO), salinity, pH, total suspended solids/total suspended solids (TSS), turbidity, nitrate, nitrite, phosphate and total organic matter (BOT). While the dependent variable is vaname shrimp productivity. The 'best' multiple regression model selections are based on the backward method. The results showed vaname shrimp productivity 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 vaname shrimp productivity are nitrates and phosphates. While water quality variables that negatively affect the productivity of vaname shrimp are pH and TSS.