Virus basics
What virus causes white spot disease in shrimp?
White Spot Syndrome Virus (WSSV).
How were shrimp infected in the infection experiment?
By injecting WSSV stock solution into the shrimp.
What infectious disease model was modified in this study?
The SIR model.
What does it mean if R₀ is greater than 1?
The infection will spread
What shrimp species was studied in the outbreak model?
Penaeus japonicus
How long were shrimp monitored for mortality during the infection experiment?
Seven days
What parameter represents the transmission coefficient of WSSV?
β (beta)
What kind of models are used to understand disease spread in populations?
Epidemiological models
What type of pathogen is WSSV?
A virus
What was the purpose of the feeding experiment?
To measure how long it takes shrimp to eat dead shrimp
In the model, what does S represent?
Susceptible shrimp
What term describes how a virus moves through a population?
Transmission
What epidemiological metric measures how contagious a disease is?
The basic reproduction number (R₀)
What behavior studied in the feeding experiment contributes to disease transmission?
Cannibalism
In the model, what does DI represent?
Dead infected shrimp
What kind of models are used to understand disease spread in populations?
Epidemiological models
What major industry is affected by WSSV outbreaks?
The shrimp aquaculture industry
What was measured in the feeding experiment?
The time required for the shrimps to completely consume a dead shrimp.
What parameter represents the removal of dead shrimp by farmers?
σ (sigma)
Why do viruses spread quickly in aquaculture systems?
High population density and shared water.