News & Notes: Virulence of Vibrio alginolyticus Isolated from Diseased Tiger Prawn, Penaeus monodon
- 1 April 1996
- journal article
- research article
- Published by Springer Nature in Current Microbiology
- Vol. 32 (4) , 229-231
- https://doi.org/10.1007/s002849900041
Abstract
Outbreaks of mass mortality among cultured tiger prawns (Penaeus monodon) with white spotted syndrome (WSS) in the carapace occurred in the summer of 1994 in I-Lan, Taiwan. A swarming strain Val was isolated from hemolymph of the moribund prawns with tryptic soy agar (TSA, supplemented with 1% NaCl, Oxoid) and/or thiosulfate citrate bile salt sucrose (TCBS, Difco) agar. This strain was characterized and identified to be Vibrio alginolyticus. The strain was susceptible to antibiotics such as chloramphenicol, ciprofloxacin, doxycycline hydrochloride, nalidixic acid, oxolinic acid, and oxytetracycline while resistant to ampicillin, novobiocin, penicillin G, sulfisoxazole, and sulfonamide. The bacteria and their extracellular products (ECP) were lethal to both tiger prawns (P. monodon) and kuruma prawns (P. japonicus) with LD50 values of 1.13 × 105, 2.46 × 105 CFU/g, and 0.23, 0.63 μg protein/g prawn body weight, respectively.Keywords
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