PMID- 22319871
OWN - NLM
STAT- MEDLINE
DCOM- 20120306
LR  - 20170203
IS  - 0254-8704 (Print)
IS  - 0254-8704 (Linking)
VI  - 32
IP  - 5
DP  - 2011 Sep
TI  - Effect of pH and salinity on pathogenicity of Flavobacterium columnare and 
      Myxobacterium sp. in Indian cat fish, Clarias batrachus (Linn.) and 
      Heteropneustes fossilis (Bloch.).
PG  - 573-7
AB  - Flavobacterium columnare (FC) and Myxobacterium sp. recorded persistently 
      associated in fish hatchery and culture system of Himalayan and Sub - Himalayan 
      regions were found to be pathogenic. The pH and salinity played a significant 
      role on the pathogenicity of these potent pathogens in case of Clarias batrachus 
      and Heteropneustes fossilis. LD50 value of FC was 10(4.5) CFU in both the fishes 
      and those of Myxobacterium sp it was 10(6) CFU ml(-1) fish(-1). Fish challenged 
      with F. columnare and Myxobacterium sp. (@ 0.2 ml fish(-1)) individually 
      consisting 10(5-6) cfu ml(-1) exhibited explicit symptoms of columnaris disease 
      and marked with ulceration and saddle back lesion on the dorsal side of body. 
      Maximum reisolation of inoculated bacteria was recorded at pH 7.0 and 7.5 and at 
      0.0-0.5 (F. columnare) and 0.0-1.0% (Myxobacterium sp.) salinity. Foregoing 
      results elucidated that F. columnare was more sensitive to salinity in comparison 
      to Myxobacterium sp. and their pathogenicity significantly (p<0.05) depends on 
      the salinity and pH that might be one of the physical factors to control their 
      proliferation.
FAU - Verma, Vinay
AU  - Verma V
AD  - Aquatic Biotechnology and Fish Pathology Laboratory, Department of Animal 
      Science, M.J.P. Rohilkhand University, Bareilly - 243 006, India.
FAU - Prasad, Yogendra
AU  - Prasad Y
FAU - Singh, Bhoj Raj
AU  - Singh BR
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - India
TA  - J Environ Biol
JT  - Journal of environmental biology
JID - 8300544
RN  - 059QF0KO0R (Water)
SB  - IM
MH  - Animals
MH  - Bacterial Infections/microbiology/pathology/*veterinary
MH  - *Catfishes
MH  - Fish Diseases/*microbiology/pathology
MH  - *Flavobacterium
MH  - Hydrogen-Ion Concentration
MH  - India
MH  - *Myxococcales
MH  - *Salinity
MH  - Water/chemistry
EDAT- 2012/02/11 06:00
MHDA- 2012/03/07 06:00
CRDT- 2012/02/11 06:00
PHST- 2012/02/11 06:00 [entrez]
PHST- 2012/02/11 06:00 [pubmed]
PHST- 2012/03/07 06:00 [medline]
PST - ppublish
SO  - J Environ Biol. 2011 Sep;32(5):573-7.