Survei Keberadaan virus white spot syndrome (WSS) pada cacing polychaeta di tambak udang: studi kasus di Kendal.

Abstract

White Spot Syndrome (WSS) disease, caused by white Spot Syndrome Virus (WSSV), is an important shrimp disease in Kendal, one of many shrimp production area in central Java Province. It has been indicated that polychaetes may be one of many vectors of WSSV. The objective of this research is to determine the occurance and prevalence of WSSV infection in polychaetes obtained from shrimp pond with various culture condition. Pond A (semi intensive, monoculture P. Vannamei, pond size 2000m2; 2); Pond B (extensive, monoculture P. Vannamei, pond size 5000m2) and Size C (extensive, polyculture P. Vannamei and tilapia Tilapia nilotica pond size 6000m2). Sediment was obtained with PVC and sieved through a series of sieve shaker. Polychaetes found were counted and identified. Pholychaetes was tested for WSSV infection with 1-step nested PCR and Prevalence of infection was calculated. Polychaetes found consisted of 2 species namely Dendroneries sp and Nereis sp. Polychaetes density (individu/m2) for pond A, B and C are 102,1168 and 207 respectively. Prevalence of WSSV inection in Polychaetes from individual ponds is 29,4% (A); 20% (B); and 12,94% (C). This prevalence is considered low compare to other similar research.