Experimental evaluation of pathogenicity of Lactococcus garvieae in black rockfish (Sebastes schlegeli)

J Vet Sci. 2004 Dec;5(4):387-90.

Abstract

Black rockfish (Sebastes schlegeli) is an important mariculture species in Korea. The production of this fish is drastically declined due to bacterial diseases, particularly streptococcosis caused by Lactococcus garvieae. The bacterial surface characteristics of SJ7 and TY6 were found to have capsule but not NB13 and YS18. The experiential evaluation of L. garvieae pathogenicity, the capsular isolates showed high cumulative mortality i.e. SJ7 (100%) and TY6 (60%) compared to non-capsular isolates. Based on this result the capsular isolates L. garvieae were highly suspected as the causative agent of streptococcosis in rockfish.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Agglutination Tests / veterinary
  • Animals
  • Bacterial Capsules
  • DNA, Bacterial / genetics
  • DNA, Bacterial / isolation & purification
  • Fish Diseases / microbiology*
  • Fish Diseases / mortality
  • Fishes
  • Fluorescent Antibody Technique, Indirect / veterinary
  • Gram-Positive Bacterial Infections / microbiology
  • Gram-Positive Bacterial Infections / mortality
  • Gram-Positive Bacterial Infections / veterinary*
  • Lactococcus / pathogenicity*
  • Polymerase Chain Reaction / veterinary

Substances

  • DNA, Bacterial