scholarly journals Antibacterial treatment of lumpfish ( Cyclopterus lumpus ) experimentally challenged with Vibrio anguillarum , atypical Aeromonas salmonicida and Pasteurella atlantica

2021 ◽  
Author(s):  
Karen O. Kverme ◽  
Marielle Kallekleiv ◽  
Kristina Larsen ◽  
Anita Rønneseth ◽  
Heidrun I. Wergeland ◽  
...  
1977 ◽  
Vol 34 (8) ◽  
pp. 1244-1249 ◽  
Author(s):  
G. L. Bullock ◽  
H. M. Stuckey

Filtration (25 nm) and ultraviolet irradiation dosages of 13,100–29,400 microwatt seconds per square centimetre (μW∙s∙cm−2) effected a 99.98–100% reduction of five gram-negative fish pathogens — Aeromonas salmonicida, A. hydrophila, Vibrio anguillarum, Pseudomonas fluorescens, and the enteric redmouth organism in 12.5 °C clear spring water or spring water containing particulate matter. Filtration and a dosage of 4500 μW∙s∙cm−2 killed 99.83–100% of test strains in spring water and 4000–4750 μW∙s∙cm−2 killed 99.33–99.99% in water with particulate matter. Irradiation of unfiltered water containing particulate matter was less effective, especially at dosages of 5000 μW∙s∙cm−2 or less, which killed 97–99.94% of strains. Filtration and 13,100 μW∙s∙cm−2 irradiation of water containing A. salmonicida prevented transmission of furunculosis. Key words: ultraviolet irradiation, bacterial fish pathogens, water disinfection


2017 ◽  
Vol 30 (1) ◽  
pp. 76-89 ◽  
Author(s):  
María-José Chapela ◽  
Martiña Ferreira ◽  
Asela Ruiz-Cruz ◽  
Iris Martin-Varela ◽  
Jacobo Fernández-Casal ◽  
...  

2017 ◽  
Vol 64 ◽  
pp. 383-391 ◽  
Author(s):  
Anita Rønneseth ◽  
Gyri T. Haugland ◽  
Duncan J. Colquhoun ◽  
Espen Brudal ◽  
Heidrun I. Wergeland

Author(s):  
Setu Chakraborty ◽  
Trung Cao ◽  
Ahmed Hossain ◽  
Hajarooba Gnanagobal ◽  
Ignacio Vasquez ◽  
...  

Biofilms ◽  
2006 ◽  
Vol 3 (1) ◽  
pp. 25-36 ◽  
Author(s):  
N. Bernbom ◽  
R. L. Jørgensen ◽  
Y. Y. Ng ◽  
R. L. Meyer ◽  
P. Kingshott ◽  
...  

ABSTRACTMicrobial adhesion and biofilm formation on surfaces pose major problems and risks to human health. One way to circumvent this problem is to coat surfaces (in this report stainless steel) with a non-toxic fish extract that generates an abiotic surface with less bacterial attachment than uncoated surfaces or surfaces coated with, for example, tryptone soy broth. The bacteria grow well in the fish extract; hence a general bacteriocidal effect is not the reason for the antifouling effect. Bacterial attachment was quantified by different methods including (a) direct fluorescence microscopy, (b) removal by ultrasound and subsequent quantification of the adhered bacteria, and (c) regrowth of the adhered bacteria measured by indirect conductometry. Surprisingly, the bacterial counts on surfaces coated with aqueous fish extract were 10–100 times lower than on surfaces coated with laboratory broths when surfaces were submerged in bacterial suspensions. The effect was seen forPseudomonas fluorescensAH2,Pseudomonas aeruginosaPAO1,Escherichia coliMG1655,Vibrio anguillarum90-11-287 andAeromonas salmonicidaJno 3175/88. It lasted for at least 7 days. Atomic force microscopy showed that steel surfaces conditioned with fish extract were covered by a thin layer of spherical, nanosized particles. Chemical analysis of the surfaces coated with adsorbed fish extract using X-ray photoelectron spectroscopy revealed that the layer was proteinaceous and had a thickness less than 2 nm. Numerous protein bands/peaks were also detected by sodium dodecyl sulphate–polyacrylamide gel electrophoresis and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry techniques. We conclude that coating the stainless steel surface with fish extract results in a thin protein layer that reduces bacterial adhesion significantly.


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