Claim

The study reported early purging of Gasterosteus nipponicus alleles at reproductive-isolation loci, followed by broader genome-wide purging except at several loci.

Type OBSERVATIONAL · truth-evaluable: yes · status at snapshot: ACTIVE · created seq 21080

Referenced 119 times: checked 2, looked up by assistants 0, viewed 76, shared 41. A count of attention, not evidence.

Topics

Biology · 1efd24fe Wildlife · 1efd24fe

Assessment

Supported

Score: 0.9734 under ledger-default@0.3.0 at snapshot 27745

2 of 4 review checks done · 1 counted · 1 by the author only

2 independent evidence lineages · review checks 1 of 4 · stability HIGH

Main unresolved issue: 4 counted evidence items have no independence review; repeats of one origin may be counted as several coverage:41e9c241-0779-86ef-a5e4-93871315847e

Not yet independently audited.Evidence reviewed so far supports this claim, but only 1 of 4 review checks has been done.A quoted passage from nature.com was not found on the page when Galedra fetched it.

Why?

Strongest counted support: Reproductive-isolation QTL showed faster reduction in marine-derived allele frequency than the genomic background. weight 1.800000 evidence

Suppressed as dependent: The quoted passage directly reports early purging at reproductive-isolation loci followed by genome-wide purging except at several loci.

Review gaps: qualifiers reviewed, opposing search done, independence reviewed

What would most change this: One independent, direct measurement that contradicts this claim would move it from Supported to Supported.

Hide calculation

0.9734 under ledger-default@0.3.0 at snapshot 27745 · state Supported · Review checks: 1 of 4 · stability HIGH · 4 sources, 2 independent lineages

Model ledger-default@0.3.0 (the default model, not the answer) · snapshot 27745 · trace sha256:26fbfb8bba776cd2f3c24c402e906bcf608a6f30840e2a9ac5d49efcb0713391

Last changed at entry seq 25584; nothing logged since has borne on this claim.

How the number was reached

Each counted link is weighed by multiplying the factors the model declares; a factor it does not declare is not shown. Every factor name below links to what that number means.

Link	Working	Weight	Counted as
a9575a6d qualify	relevance DIRECT 2.0 × observation MEASUREMENT 1.0 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	2.000000	0.000000 (non directional)
a649b675 support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	1.800000	1.800000
33c27d7e support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	1.800000	1.800000
b5998f8d support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	1.800000	0.000000 (dependent strongest only, kept 33c27d7e)

prior 0.50 → log-odds 0.000000 + 3.600000 (the counted weights) = 3.600000 → probability 0.9734

Under neighbouring settings of the same model: 0.9255 to 0.9908, a spread of 0.0653.

Half-even rounding, six places for weights and four for the probability. The same inputs under the same model reproduce this exactly; that is what the trace hash above is for. How a score is worked out explains every factor, why it is there, and what the model sets it to.

Your view

Registered views

Nobody has registered a view yet.

Registered views are personal belief, not evidence: they never change Galedra's assessment. Affiliations are self-declared and shown only for groups of 5 or more.

Checked as part of

Statements this claim was broken out of. The claim is scored on its own; a statement's reading only counts its claims.

“The study reported early purging of Gasterosteus nipponicus alleles at reproductive-isolation loci, followed by broader genome-wide purging except at several...” · 1 claim · 29 September 2026
“A primary Nature Ecology and Evolution study monitored a tsunami-induced stickleback hybrid population to quantify post-hybridization genomic purging.” · 3 claims · 29 September 2026

Evidence for

The primary study reports the sequence of purging at barrier loci and across the genome.

From Rapid genome-wide purging following tsunami-induced hybridization in a stickleback population Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Primary genomic result.
Reproductive-isolation QTL showed faster reduction in marine-derived allele frequency than the genomic background.

From Rapid genome-wide purging following tsunami-induced hybridization in a stickleback population Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Quoted comparative genomic result from the primary study.
The quoted passage directly reports early purging at reproductive-isolation loci followed by genome-wide purging except at several loci.

From Rapid genome-wide purging following tsunami-induced hybridization in a stickleback population Read 2026-09-29 Relevance DIRECT Steps 0 Counted

The excerpt states the sequence and genomic locations of allele purging.

Evidence against

None.

Qualifications

The purging sequence is bounded to Otsuchi’s 2012–2020 monitoring and a 667-locus comparison; other tsunami habitats differed and some retained-locus explanations remained unresolved.

From Rapid genome-wide purging following tsunami-induced hybridization in a stickleback population Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Adds focal-population, sampling, locus-category, generation, replication, and unresolved-retention limits.

Suppressed as dependent

Evidence	Group	Kept instead
3e557252		33c27d7e

Inferences

Concluded from

None.

Used as a premise in

None.

An inference is interpretation, not evidence: it never changes the assessment of its conclusion. Each premise is a claim with its own evidence.

Threads

None. Threads are for disagreements about how a determination was made — a statement whose figures are not in the passage it rests on, two sources that may share an origin. Something about the world belongs in the evidence above.

Claim edges

None. Edges are stored and displayed; v0.1 does not propagate probability across them.

Review checklist

Review checks: 1 of 4

2 checks by this claim's own author, alongside the independent review above. 1 QUALIFIER CHECK · 1 EVIDENCE VERIFICATION. A check by the person who recorded a claim does not raise its review coverage.

Check	Done	By
qualifiers reviewed	no
opposing search done	no
independence reviewed	no
primary source reviewed	yes	a9575a6d, a649b675, 33c27d7e, b5998f8d

Summary

Supported. The main support is: Reproductive-isolation QTL showed faster reduction in marine-derived allele frequency than the genomic background. 0a833aa2

1 further item repeats the same origin and is not independent evidence. 3e557252

Qualifier: The purging sequence is bounded to Otsuchi’s 2012–2020 monitoring and a 667-locus comparison; other tsunami habitats differed and some retained-locus explanations remained unresolved. 77249efb

Review checks: 1 of 4. coverage:41e9c241-0779-86ef-a5e4-93871315847e

Generated by stub-v0.1; every sentence cites graph ids.

Contribution history

seq	event	detail
21080	APPENDED
21081	ACCEPT	AUTOMATIC_AFTER_VALIDATION
21096	LINK_EVIDENCE	by 1efd24fe (accepted)
21223	LINK_EVIDENCE	by 1efd24fe (accepted)
24536	TASK_RESULT	by 1efd24fe (accepted)
25583	TASK_RESULT	by 1efd24fe (accepted)

Score trace

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  "code_hash": "sha256:c61a6fdf35a754a0d7e958df149036a083c0eaeb7d2d2e52704ec32b0c36def7",
  "contested": false,
  "stability": "HIGH",
  "claim_type": "OBSERVATIONAL",
  "config_hash": "sha256:86768038080b8ab5233f1e4b7aba10af05b5bb44caa432095150b90e81209809",
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  "evidence_sum": "3.600000",
  "snapshot_seq": 25584,
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  "support_groups": 2,
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  "review_coverage": "0.25",
  "truth_evaluable": true,
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  "review_checklist": {
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    "primary_source_reviewed": {
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  "contradict_groups": 0,
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