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In vitro passages impact on virulence of Saprolegnia parasitica to Atlantic salmon, Salmo salar L. parr.

Songe MM, Thoen E, Evensen Ø, Skaar I - J. Fish Dis. (2013)

Bottom Line: The effect of serial in vitro subculturing on three pathogenic strains of Saprolegnia parasitica was investigated.Two of the strains declined in virulence after 15 successive in vitro subcultures, whereas one did not.It reveals that some strains degenerate more rapidly than others when subjected to successive in vitro subculturing on glucose-yeast extract.

View Article: PubMed Central - PubMed

Affiliation: Norwegian Veterinary Institute, Oslo, Norway.

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Related in: MedlinePlus

VIO 5337 Percentage of fish showing gross signs of infection over a period of 11 days.
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fig01: VIO 5337 Percentage of fish showing gross signs of infection over a period of 11 days.

Mentions: Strain 5337AP produced visible, typical lesions in a few fish within 48 h post-challenge, and the first moribund fish were collected and killed at this time point (48 h post-challenge) (Fig. 1). By day 3, some infected fish were observed in 53375P and 533715P tanks (Fig. 1). The CPI for 5337AP was significantly higher than those in the 53375P and 533715P groups by day 11 (Fig. 1).


In vitro passages impact on virulence of Saprolegnia parasitica to Atlantic salmon, Salmo salar L. parr.

Songe MM, Thoen E, Evensen Ø, Skaar I - J. Fish Dis. (2013)

VIO 5337 Percentage of fish showing gross signs of infection over a period of 11 days.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4263310&req=5

fig01: VIO 5337 Percentage of fish showing gross signs of infection over a period of 11 days.
Mentions: Strain 5337AP produced visible, typical lesions in a few fish within 48 h post-challenge, and the first moribund fish were collected and killed at this time point (48 h post-challenge) (Fig. 1). By day 3, some infected fish were observed in 53375P and 533715P tanks (Fig. 1). The CPI for 5337AP was significantly higher than those in the 53375P and 533715P groups by day 11 (Fig. 1).

Bottom Line: The effect of serial in vitro subculturing on three pathogenic strains of Saprolegnia parasitica was investigated.Two of the strains declined in virulence after 15 successive in vitro subcultures, whereas one did not.It reveals that some strains degenerate more rapidly than others when subjected to successive in vitro subculturing on glucose-yeast extract.

View Article: PubMed Central - PubMed

Affiliation: Norwegian Veterinary Institute, Oslo, Norway.

Show MeSH
Related in: MedlinePlus