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Run the SPB Infestation Model with Java!

The following Java model will calculate the total number of attacking female beetle after 25 weeks. 

You may adjust

  • The initial number of immigrant females entering the area

  • The percent, entered as a decimal, of the attacking population which reemerges (between 0 and 1)
  • The percent of beetle that survive between-trees
  • The number of female beetles produced per female beetle

The chart will produce values for

  • Week number
  • Immigrant beetles population
  • Reemerged beetles
  • Brood population
  • Total attacks per week
Data produced from this table can be graphed by clicking the button at the bottom of the screen.

 

Beetle Attack Calculator
The initial number of immigrant females entering the area:
Multiplier for the proportion of the attacking population which reemerges (0 < MR < 1):
The between-tree survival rate (0 < SR < 1):
The multiplier indicating the number of progeny females emerging per parent female in the attacking cohort (the brood increases ratio MB > 0):
The total number of beetle attacks after 25 weeks:


Week Immigrant Reemerged Brood Total Attacks per Week
Week Immigrant Reemerged Brood Total Attacks per Week

Developed by the SC2000 team of teachers
from Wartburg Central High School, Tennessee
Copyright © 2001
NSF logo
This project is supported, in part,
by the

National Science Foundation

Opinions expressed are those of the authors
and not necessarily those of the National Science Foundation.