Varroa Infestation Percent Alcohol Wash
Compute pooled wash mite count per 100 bees with caller recovery-calibration bounds; multiple mites per host are allowed, so this is not a binomial host-infection probability or treatment threshold.
Description
An alcohol-wash rate counts mites per 100 sampled bees.
An alcohol-wash rate counts mites per 100 sampled bees. Several mites can occur per host, so this rate is not a percentage of bees infected and can exceed one hundred.1
Compute pooled wash mite count per 100 bees with caller recovery-calibration bounds; multiple mites per host are allowed, so this is not a binomial host-infection probability or treatment threshold.
When to use Varroa Infestation Percent Alcohol Wash
Use this tool to compute pooled wash mite count per 100 bees with caller recovery-calibration bounds; multiple mites per host are allowed, so this is not a binomial host-infection probability or treatment threshold.
Prepare the hive, sample or operating measurements and any supplied target values. Confirm units, timing and whether counts or masses refer to the same population or batch.
How to use Varroa Infestation Percent Alcohol Wash and understand its results
- Prepare the hive, sample or operating measurements and any supplied target values. Confirm units, timing and whether counts or masses refer to the same population or batch.
- Enter miteCounts, washedBeeCounts, washRecoveryFractionBounds using the field table and calculation rules, then run the tool.
- Read sampleMitesPer100Bees, pooledObservedMitesPer100Bees, recoveryAdjustedRateBounds. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| miteCounts | Mite counts | list of number | Required |
| washedBeeCounts | Washed bee counts | list of number | Required |
| washRecoveryFractionBounds | Wash recovery fraction bounds | list of number | Required |
Pair nonnegative integer mite counts with positive integer washed-bee counts. Supply two ordered recovery fractions greater than zero and at most one. Return each sample rate, the pooled count-based rate and recovery-adjusted bounds using reversed recovery endpoints.
Paired lists must be nonempty and have equal lengths.
observed rate = 100Σmites/Σbees; corrected bounds = [rate/highRecovery,rate/lowRecovery] Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| sampleMitesPer100Bees | Sample mites per100 bees | list of number |
| pooledObservedMitesPer100Bees | Pooled observed mites per100 bees | number |
| recoveryAdjustedRateBounds | Recovery adjusted rate bounds | list of number |
{
"input": {
"miteCounts": [
3,
6
],
"washedBeeCounts": [
100,
200
],
"washRecoveryFractionBounds": [
0.5,
1
]
},
"output": {
"sampleMitesPer100Bees": [
3,
3
],
"pooledObservedMitesPer100Bees": 3,
"recoveryAdjustedRateBounds": [
3,
6
]
}
}Limitations and assumptions
Recovery bounds are supplied calibration scenarios, not confidence intervals. Sample representativeness and treatment decisions are not assessed, and no intervention threshold is built in.
Numeric inputs must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Numeric lists are limited to 100,000 entries; the rules above may require smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use Post Treatment Mite Drop Check Tool: Compare exposure-normalized mite-drop observations before/after an intervention with supplied background; this is a monitoring contrast, not causal treatment efficacy or evidence of colony mite clearance. For a complementary task, use Brood Pattern Solidity Score Percent: Measure occupancy and largest four-neighbor empty patch inside a recorded brood-cell grid; excluded cells do not enter the denominator and no queen-health or disease diagnosis is invented.
References
-
Varroa Infestation Percent Alcohol Wash — tool.io
Similar or alternative tools
- Post Treatment Mite Drop Check Tool
Compare exposure-normalized mite-drop observations before/after an intervention with supplied background; this is a monitoring contrast, not causal treatment efficacy or evidence of colony mite clearance.
- Brood Pattern Solidity Score Percent
Measure occupancy and largest four-neighbor empty patch inside a recorded brood-cell grid; excluded cells do not enter the denominator and no queen-health or disease diagnosis is invented.