SURVEILLANCE OF VIBRIO AND BLUE-GREEN ALGAE IN INTENSIVE SYSTEM OF PACIFIC WHITE SHRIMP (LITOPENAEUS VANNAMEI) IN SITUBONDO REGENCY, EAST JAVA, INDONESIAMUHAMMAD INAS RIANDI, RADEN JOKO KUNCORONINGRAT SUSILO, MAYADITA DWI SANI, AGNES YUANTIN MAHARANI, AGOES SOEGIANTO, TRISNADI W.C. PUTRANTO AND PUTU ANGGA WIRADANAAbstract This study aims to investigate changes in the number of Vibrio bacteria and Blue-Green Algae, water quality, and production performance in farmed Pacific white shrimp with an intensive system in Situbondo, East Java, Indonesia. This study was conducted on seven pacific white shrimp intensive ponds during one cycle of maintenance period (84 days), April 2019-August 2019. Interestingly, the results showed that the highest Total Vibrio Counts (TVC) was obtained in the Farms A with a total of 31.2-83.2(2.2±8.9)b, which followed by Farms C 16.4-71.6 (3.7±18.0) ab and Farms B 13.7-47.7 (2.6±13.6)a (p<0.05). Whereas the highest Total Bacterial Count (TBC) number was obtained in the Farms C with a total of 0.48-1.7 (95.3±50.7)a, which followed by Farms A 0.20-4.2 (11.5±61.7)a and Farms B 0.13-0.80(28.1±11.4)a, the highest green colony appeared on Farms C with a total 0-9.0 (1.8±36.0)a, and followed by Farms B 0-3.8 (9.5±15.8)a (p<0.05). While on yellow colonies, appeared on high amount in Farms A with total 3.1-8.3 (5.7±22.0)a, followed by Farms C 1.5-7.1 (3.7±18.3)ab and Farms B 0.9-4.5 (2.5±13.8)a (p<0.05). Percentage Blue-Green Algae on three Farms undergo fluctuation from May to August. Water quality parameters showed the normal range for all Pacific white shrimp ponds during the observation. The intensive culture system applied to Pacific white shrimp experiences dynamics that can affect aspects of microbiology, water quality, and production performance. |