Vol. 9, Issue 12, Part H (2025)

The present study was conducted to investigate the physicochemical water quality parameters and major Vibrio spp. present in the shrimp (Penaeus monodon) farms in Gujarat. Water samples were collected from July to December 2024 from 20 P. monodon farms across four districts (five sites per district), including Navsari, Surat, Bhavnagar, and Bharuch districts. The water quality parameters, viz., temperature, pH, salinity, dissolved oxygen (DO), total alkalinity, and total hardness, ranged from 28.00±0.577 to 30.67±0.333 ºC, 7.93±0.055 to 8.33±0.058, 13.00±0.577 to 25.33±0.333 ppt, 131.67±1.667 to 200.00±10.00 mg/L, and 2600.00±115.470 to 5083.33±104.08 mg/L, respectively. The majority of water quality parameters were well within the acceptable range for normal shrimp culture. Five major Vibrio spp. viz., Vibrio parahaemolyticus (VP), V. cholerae (VC), V. vulnificus (VV), V. alginolyticus (VA), and V. harveyi (VH) were found present at respective sites. The species-based identification from water samples revealed that the highest number of Vibrio present was VP (49), followed by VC (43), VA (30), VH (12), and VV (6).