Uzi Fly Parasitism Percent Loss
Estimate cohort-specific cocoon/revenue losses from observed uzi parasitism and supplied conditional harvest-loss assumptions; prevalence does not itself imply universal mortality.
Description
Observed uzi parasitism describes prevalence, while harvest loss depends on a separate conditional assumption.
Observed uzi parasitism describes prevalence, while harvest loss depends on a separate conditional assumption. Cohort cocoon masses may differ.
Estimate cohort-specific cocoon/revenue losses from observed uzi parasitism and supplied conditional harvest-loss assumptions; prevalence does not itself imply universal mortality.
When to use Uzi Fly Parasitism Percent Loss
Use this tool to estimate cohort-specific cocoon/revenue losses from observed uzi parasitism and supplied conditional harvest-loss assumptions; prevalence does not itself imply universal mortality.
Prepare cocoon, larval, leaf or reeling measurements on a consistent batch and moisture basis. Use the declared mass, length and time units.
How to use Uzi Fly Parasitism Percent Loss and understand its results
- Prepare cocoon, larval, leaf or reeling measurements on a consistent batch and moisture basis. Use the declared mass, length and time units.
- Enter inspectedLarvaeByCohort, parasitizedLarvaeByCohort, lostCocoonFractionsAmongParasitized, expectedCocoonMassGramsByCohort, cocoonPricePerKg using the field table and calculation rules, then run the tool.
- Read pooledObservedParasitismPercent, expectedLostCocoonCounts, expectedLostCocoonKg, expectedRevenueLoss. 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 |
|---|---|---|---|
| inspectedLarvaeByCohort | Inspected larvae by cohort | list of number | Required |
| parasitizedLarvaeByCohort | Parasitized larvae by cohort | list of number | Required |
| lostCocoonFractionsAmongParasitized | Lost cocoon fractions among parasitized | list of number | Required |
| expectedCocoonMassGramsByCohort | Expected cocoon mass grams by cohort | list of number | Required |
| cocoonPricePerKg | Cocoon price per kg | number | Required |
Align positive integer inspected counts with parasitized counts no greater than inspected, loss fractions in [0,1] and nonnegative cocoon masses. Pool prevalence by inspected count and scale expected losses by price.1
Paired lists must be nonempty and have equal lengths.
expected lost kg = Σ parasitized × conditional loss fraction × cocoon grams/1000 Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| pooledObservedParasitismPercent | Pooled observed parasitism percent | number |
| expectedLostCocoonCounts | Expected lost cocoon counts | list of number |
| expectedLostCocoonKg | Expected lost cocoon kg | number |
| expectedRevenueLoss | Expected revenue loss | number |
{
"input": {
"inspectedLarvaeByCohort": [
100,
200
],
"parasitizedLarvaeByCohort": [
10,
20
],
"lostCocoonFractionsAmongParasitized": [
0.5,
1
],
"expectedCocoonMassGramsByCohort": [
2,
3
],
"cocoonPricePerKg": 5
},
"output": {
"pooledObservedParasitismPercent": 10,
"expectedLostCocoonCounts": [
5,
20
],
"expectedLostCocoonKg": 0.06999999999999999,
"expectedRevenueLoss": 0.35
}
}Limitations and assumptions
Parasitism is not automatically universal mortality; assumptions do not predict realized loss.
Numbers and computed results must be finite; overflow produces an error. 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 Single Cocoon Weight MG: Calculate tare-corrected batch and pooled single-cocoon mg means with count weighting; no nominal breed cocoon mass table. For a complementary task, use Value Chain Margin Cocoon To Silk: Balance cocoon purchase, explicit conversion costs, silk yield and byproducts into a signed cocoon-to-silk contribution; excludes unspecified capital/tax charges.
References
-
Uzi Fly Parasitism Percent Loss — tool.io
Similar or alternative tools
- Single Cocoon Weight MG
Calculate tare-corrected batch and pooled single-cocoon mg means with count weighting; no nominal breed cocoon mass table.
- Value Chain Margin Cocoon To Silk
Balance cocoon purchase, explicit conversion costs, silk yield and byproducts into a signed cocoon-to-silk contribution; excludes unspecified capital/tax charges.