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Controlled experiment Direct Neocaridina evidence

Female Growth and Offspring Quality over Successive Spawnings in a Caridean Shrimp Neocaridina davidi with Direct Development

Tropea and López Greco, 2015. The Biological Bulletin 229(3): 243-254.

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This record is a claim boundary, not a quality badge. Evidence class and species relationship describe what was studied. They do not make the result universal, complete or automatically applicable to a home aquarium.

Source taxon as published
Neocaridina davidi
Environment
Laboratory culture following females, eggs and offspring across repeated spawnings
Life stages
adult female, egg, newly hatched juvenile, juvenile through 30 days
Reviewed
2026-08-12

What was studied

Study shape: Female condition, eggs and offspring were measured across five or six consecutive spawns and compared with non-reproducing females where relevant.

Experimental unit: Individual female or spawn, with offspring followed under the study protocol

Endpoints: eggs per spawn, egg biochemical composition, hatchlings, hatchling size, juvenile growth, female energy and mass.

Claim boundary

What it can support: Later spawns had lower egg lipid and energy measures, and reproduction was associated with lower female energy and body mass under the protocol.

What it cannot support: It does not show that every later brood is inferior, diagnose poor care from female size or create a universal brood limit.

Publication status audit

Matched in dated Crossref query

The canonical DOI appeared in the dated broad query and carried no registered update in that response. This is a metadata observation, not proof that the work has never changed.

Metadata snapshot reviewed 2026-08-12. Inspect the method, unmatched queue and limitations.

Correction impact

If this source boundary changes, these are the known downstream consumers. The list distinguishes scientific re-review from generated parity and historical follow-up.

Editorial review required (7)

This curated wording or synthesis must be reconsidered when the source boundary changes. A passing generator test cannot decide the new scientific meaning.

  • A berried female guarantees babies Curated claim check
    The exact claim trace uses this record as direct support: Measures successive reproductive events rather than treating egg attachment as guaranteed retained offspring.
  • breeding decision card Tank-side decision card
    The card translates this guide into an observation, first action, next record and stopping boundary, so all four require editorial review when the source changes.
  • feeding decision card Tank-side decision card
    The card translates this guide into an observation, first action, next record and stopping boundary, so all four require editorial review when the source changes.
  • growth decision card Tank-side decision card
    The card translates this guide into an observation, first action, next record and stopping boundary, so all four require editorial review when the source changes.
  • breeding practical guide Practical guide
    The guide uses this evidence record and its practical wording must remain inside the revised source boundary.
  • feeding practical guide Practical guide
    The guide uses this evidence record and its practical wording must remain inside the revised source boundary.
  • growth practical guide Practical guide
    The guide uses this evidence record and its practical wording must remain inside the revised source boundary.

Generated from governing registry (19)

This surface derives from a governing registry and should update with it, but release tests must still prove parity and routing.

Inspect the corpus-wide propagation audit.

How this record is classified

Controlled experiment: An assigned treatment or controlled comparison. The treatment, unit, duration and endpoint still limit the claim.

Direct Neocaridina evidence: The source measured animals named within Neocaridina. Direct still does not mean universal or sufficient.

Topics: Breeding, Growth and lifespan, Feeding

Critically appraise this source without a score

These questions fit this record's controlled experiment role. They are prompts, not automatic judgments. Open the original source to answer them.

  1. Identity and provenance: How were the organism, population, stock and life stage identified and sourced? A published name or seller label can hide a taxonomic, population or life-stage transfer.
  2. Independent unit: What unit was independently assigned or sampled, and how many units support each comparison? Animal counts do not create independent replication when animals share a vessel, site, family or treatment history.
  3. Comparison and context: What was the actual comparator, allocation process, environment, duration and material condition? A result has meaning only against the comparison and conditions that produced it.
  4. Endpoint and measurement: Which endpoint was measured, with what method, unit, timing, resolution and decision rule? One endpoint cannot silently become survival, welfare, diagnosis, reproduction or long-term population performance.
  5. Denominators and missingness: Are starting counts, exclusions, losses, missing observations and analysis denominators reconciled? Unreported or changing denominators can alter the apparent direction, precision and applicability of a result.
  6. Transfer boundary: What is the nearest tempting aquarium claim that this source design cannot establish? Direct evidence can still be narrow, and adjacent evidence can be useful only while the inference remains visible.
  7. Treatment assignment: Were independent units assigned to treatments, and were baseline conditions comparable? Unclear allocation or baseline imbalance can confound the treatment comparison.
  8. Replication: Were treatment vessels or other exposure units independently replicated rather than subsampled? Repeated animals or assays inside one exposure unit do not replicate the environmental treatment.
  9. Exposure verification: Was the treatment, dose, feed intake or environmental exposure measured and maintained as described? Nominal treatment labels may not equal the exposure animals actually received.
  10. Analysis: Did the statistical model match the unit, repeated measures, multiplicity and missing outcomes? A precise p-value cannot repair a mismatched unit or unaccounted comparison structure.

Read the complete appraisal framework.

Where it is used

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