Vibrio alginolyticus associated with white spot disease of Penaeus monodon

Diseases of Aquatic Organisms

A. P. Lipton¹  Joseph Selvin¹ 

关键词: Bacterial disease;    Penaeus monodon;    Secondary pathogen;    Vibrio;    Antibiogram;    Pathogenicity;   

DOI  :  10.3354/dao057147

学科分类：生物科学（综合）

来源: Inter-Research

【 摘 要 】

ABSTRACT: In February 2000, white spot disease outbreaks occurred among cultured Penaeus monodon in extensive shrimp farms on the southwest coast of India. Bacteria were isolated from infected shrimp that showed reddish body coloration and whitespots in the cuticle. The isolates were screened on thiosulfate citrate bile salt sucrose (TCBS) agar plates for the selection of Vibrio species. The primary isolate (QS7) was characterized as V. alginolyticus based on morphological,biochemical and physiological characteristics. Antibiotic sensitivity tests of QS7 indicated that the isolate was highly sensitive to chloramphenicol, ciprofloxacin, nalidixic acid and streptomycin. Pathogenicity tests confirmed that the isolate wasvirulent for P. monodon. Based on the lethal dose (LD₅₀) value (5 ×10⁶ cfu per shrimp), it was inferred that shrimp weakened by white spot syndrome virus would succumb to secondary infection by QS7.

【 授权许可】

Unknown