Waggle Dance graphs
What does the x-axis (horizontal) contain?
increasing distance to food source (km)
What does the x-axis (horizontal) contain?
Days after treatment: pre-treatment, 4 days, 7 days, etc.
Left: bee population; right: mite population
What does the y-axis (vertical) contain?
increasing time spent waggling (seconds)
Beekeepers treat heavily infested hives with... (what substance are they putting on the hives and why?)
oxalic acid, which kills Varroa mites
The number of bees increases, then decreases over time. In which month is the population of bees highest?
The number of bees is highest in June (40,000)
The speed and direction of the pattern communicates to the other bees...
where the new food source is located
How many mites were in the average colony before treatment?
~13 mites (look at the pre-treatment bar)
The number of mites increases then decreases over time. In which month is the mite population the highest?
The mite population is highest in September (10,000)
What does the title of the graph say and what does it mean?
Waggle dance relating to the distance to the food source = how far away the food is affects the dance
Did the oxalic acid kill the mites at first? How do you know?
Yes because the average number of mites decreased from 13 before treatment to 2 when it was 4 days after treatment
The text says that infestation rates higher than 5% reduce colony survival. What does this mean?
A) More than 5 mites per 100 bees is bad for the bees
B) More than 50 mites per 100 bees is bad for the bees
C) The bees survive if there are more than 5 mites per 100 bees
D) The bees are only harmed if there are more than 100 mites for every 5 bees
A) A ratio of 5 or more mites per 100 bees harms the bees (5/100 = 5%)
What is the relationship (on the graph) between distance to food source and time spent waggling?
When one increases, the other increases - if the food is further away the bee does a longer dance
From 4 days after treatment to 18 days after treatment, what happened to the average number of mites?
The average number of mites increased from 2 (on day 4 post-treatment) to about 11 (day 18 post-treatment)
What is the claim in #32 (that you are evaluating)?
Changing the time of year of a varroa mite treatment may cause a change in the ecosystem