Drone Brood Trapping Cycle Days

Intersect caller removal/emergence windows for observed capped drone-brood cohorts; describes a timing scenario only, not a validated mite-control schedule or efficacy claim.

Description

A cohort timing window combines a minimum removal age with an emergence deadline and lead allowance.

A cohort timing window combines a minimum removal age with an emergence deadline and lead allowance. Intersecting all supplied cohorts' windows identifies whether one common nonnegative timing scenario exists.^[1]

Intersect caller removal/emergence windows for observed capped drone-brood cohorts; describes a timing scenario only, not a validated mite-control schedule or efficacy claim.

When to use Drone Brood Trapping Cycle Days

Use this tool to intersect caller removal/emergence windows for observed capped drone-brood cohorts; describes a timing scenario only, not a validated mite-control schedule or efficacy claim.

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 Drone Brood Trapping Cycle Days 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 cappedBroodAgesDays, earliestRemovalAgeDays, earliestModelEmergenceAgeDays, emergenceLeadDays using the field table and calculation rules, then run the tool.
Read cohortInterceptionWindowsDays, commonInterceptionWindowDays. 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
cappedBroodAgesDays	Capped brood ages days	list of number	Required
earliestRemovalAgeDays	Earliest removal age days	number	Required
earliestModelEmergenceAgeDays	Earliest model emergence age days	number	Required
emergenceLeadDays	Emergence lead days	number	Required

Enter 1–128 nonnegative capped-brood ages, positive modeled emergence age and nonnegative removal age and lead, all in days. Calculate each interval and their intersection. Reject an upper bound below the lower bound; equal bounds are accepted. Return individual and common windows in days from the supplied observation.

window_i = [max(0,minimumRemovalAge−age_i), emergenceAge−lead−age_i]; common = [max lower,min upper]

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output field	Meaning	Value type
cohortInterceptionWindowsDays	Cohort interception windows days	list of list of number
commonInterceptionWindowDays	Common interception window days	list of number

json

{
  "input": {
    "cappedBroodAgesDays": [
      10,
      12
    ],
    "earliestRemovalAgeDays": 14,
    "earliestModelEmergenceAgeDays": 24,
    "emergenceLeadDays": 2
  },
  "output": {
    "cohortInterceptionWindowsDays": [
      [
        4,
        12
      ],
      [
        2,
        10
      ]
    ],
    "commonInterceptionWindowDays": [
      4,
      10
    ]
  }
}

Limitations and assumptions

Biological timings are caller assumptions. The tool does not validate mite-control effectiveness or prescribe a trapping operation, and it does not infer unobserved cohorts.

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 Swarm Cell Inspection Interval Days: Screen a visit interval against the oldest observed queen-cell age and caller earliest-capping/lead assumptions; does not predict swarming or prescribe an inspection interval. For a complementary task, use Walk Away Split Timing Checker: Screen a caller walk-away development/mating timing scenario against a forage horizon; no natural queen-development constants, mating success or split recommendation is embedded.

References

Drone Brood Trapping Cycle Days — tool.io

Similar or alternative tools

Swarm Cell Inspection Interval Days
Screen a visit interval against the oldest observed queen-cell age and caller earliest-capping/lead assumptions; does not predict swarming or prescribe an inspection interval.
Walk Away Split Timing Checker
Screen a caller walk-away development/mating timing scenario against a forage horizon; no natural queen-development constants, mating success or split recommendation is embedded.