Received: 14-07-2015 / Accepted: 12-10-2015
Acute hepatopancreas necrosis disease (AHPND) has been considered as a major constraint for the sustainable development of shrimp culture industry. This study was carried out to examine in vitroanti-bacterial effects of herbal extracts derived from leaves and seeds of myrtle (Rhodomyrtus tomentosa) on bacterial strains caused AHPND, Vibrio parahaemolyticusKC12.02.0, V. parahaemolyticusKC13.14.2, andVibrio sp.KC13.17.5. Results showed that although both myrtle leafand seed extracts had anti-bacterial effects against in vitro AHPND-causingVibriostrains, the myrtle seed extract showed higher antibacterial activities. The inhibition zone diameters of myrtle seed extract reached17,67 mm for V.parahaemolyticusKC13.14.2; 18,00 mm for V.parahaemolyticusKC12.02.0and 19,33 mm for Vibriosp.KC13.17.5. These results suggested myrtle seed extract can potentially be used as a material for development of herbal medicine for AHPND control.