How Tambaqui Fish Respond to Bacteria from Nile Tilapia
Author Information
Author(s): Reis Francisco Yan Tavares, Rocha Victória Pontes, Janampa-Sarmiento Peter Charrie, Santos Ágna Ferreira, Leibowitz Márcia Pimenta, Luz Ronald Kennedy, Pierezan Felipe, Gallani Sílvia Umeda, Tavares Guilherme Campos, Figueiredo Henrique César Pereira
Primary Institution: Federal University of Minas Gerais
Hypothesis
Can Streptococcus agalactiae and Francisella orientalis from Nile tilapia infect tambaqui fish?
Conclusion
Streptococcus agalactiae is highly pathogenic to tambaqui, causing significant mortality, while Francisella orientalis does not lead to death but can still infect the fish.
Supporting Evidence
- S. agalactiae caused 83.33% mortality in tambaqui within 48 hours.
- F. orientalis did not cause mortality but was isolated from infected fish.
- Histopathological changes were observed in multiple organs of tambaqui infected with S. agalactiae.
- Control groups showed no significant clinical signs or mortality.
Takeaway
This study shows that a type of bacteria from tilapia can make tambaqui fish very sick and die, but another type of bacteria doesn't kill them, even though it can still cause problems.
Methodology
Juvenile tambaqui were experimentally infected with S. agalactiae and F. orientalis, and their health was monitored for clinical signs, mortality, and tissue damage.
Limitations
The study did not investigate horizontal transmission of pathogens from tilapia to tambaqui.
Participant Demographics
Juvenile tambaqui fish with an average weight of 53 ± 19 g.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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