Reference health
Recurrent origin of a sexually selected trait in Xiphophorus fishes inferred from a molecular phylogeny
20/20 checkable references clean · checked 2026-07-22
Every reference with a DOI in the deposited reference list resolved to a known work in Crossref or DataCite at the dated check, and none carried a retraction, withdrawal, or removal notice.
23 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.
The 20 checked references that resolve
resolves10.1126/science.250.4982.808
Female Preference Predates the Evolution of the Sword in Swordtail Fish
resolves10.1038/343066a0
Sexual selection for sensory exploitation in the frog Physalaemus pustulosus
resolves10.1016/S0003-3472(05)80928-5
Female preference for male sword length in the green swordtail, Xiphophorus helleri (Pisces: Poeciliidae)
resolves10.1093/genetics/102.3.539
PROTEIN POLYMORPHISMS, SEGREGATION IN GENETIC CROSSES AND GENETIC DISTANCES AMONG FISHES OF THE GENUS XIPHOPHORUS (POECILIIDAE)
resolves10.1126/science.236.4801.595
Asymmetries in Mating Preferences Between Species: Female Swordtails Prefer Heterospecific Males
resolves10.1086/281162
A Hormone-Produced Taxonomic Character in Platypoecilus maculatus Diagnostic of Wild P. xiphidium
resolves10.1126/science.248.4961.1405
Correlated Evolution of Female Mating Preferences and Male Color Patterns in the Guppy
<i>Poecilia reticulata</i>
resolves10.1038/363255a0
Positive genetic correlation between female preference and preferred male ornament in sticklebacks
resolves10.1111/j.1558-5646.1985.tb00420.x
CONFIDENCE LIMITS ON PHYLOGENIES: AN APPROACH USING THE BOOTSTRAP
resolves10.1073/pnas.86.16.6196
Dynamics of mitochondrial DNA evolution in animals: amplification and sequencing with conserved primers.
resolves10.1038/347550a0
Monophyletic origin of Lake Victoria cichlid fishes suggested by mitochondrial DNA sequences
resolves10.1098/rspb.1993.0140
The evolution of copulatory organs, internal fertilization, placentae and viviparity in killifishes (Cyprinodontiformes) inferred from a DNA phylogeny of the tyrosine kinase gene
<i>X-src</i>
The 23 references without a DOI — listed, not checked
no DOI — not checkedDarwin, C. The Descent of Man, and Selection in Relation to Sex (Murray, London, 1871).
no DOI — not checkedBradbury, J. W. & Anderson, M. B. (eds) Sexual Selection: Testing the Alternatives (Wiley, Chichester, UK, 1987).
no DOI — not checkedMaynard Smith, J. in Sexual Selection: Testing the Alternatives (eds Bradbury, J. W. & Anderson, M. B.) 9–20 (Wiley, Chichester, UK, 1987).
no DOI — not checkedKirkpatrick, M. in Sexual Selection: Testing the Alternatives (eds Bradbury, J. W. & Anderson, M. B.) 67–82 (Wiley, Chichester, UK, 1987).
no DOI — not checkedRyan, M. Oxf. Surv. Evol. Biol. 7, 157–195 (1990).
no DOI — not checkedAlcock, J. Animal Behavior 5th edn (Sinauer, Sunderland, 1993).
no DOI — not checkedKrebs, J. R. & Davies, N. B. An Introduction of Behavioral Ecology 3rd edn (Blackwell, Oxford, 1993).
no DOI — not checkedRosen, D. E. Bull. Am. Mus. nat. His. 162, 268–375 (1979).
no DOI — not checkedRauchenberger, M., Kallman, K. D. & Morizot, D. C. Am. Mus. nat. His. Nov. 2975, 1–41 (1990).
no DOI — not checkedHaas, V. in Trends in Ichthyology (eds Schröder, J. H., Bauer, J. & Schartl, M.) 279–288 (Blackwell, London, 1993).
no DOI — not checkedRosen, D. E. & Bailey, R. M. Bull. Am. Mus. nat. Hist. 126, 1–176 (1963).
no DOI — not checkedSwofford, D. L. Phylogenetic Analysis Using Parsimony Version 3.1.1 (Illinois Natural History Survey, Champaign, 1993).
no DOI — not checkedSaitou, N. & Nei, M. Molec. Biol. Evol. 4, 406–425 (1987).
no DOI — not checkedMeyer, M. K. & Schartl, M. Senkenbergiana biol. 60, 147–151 (1980).
no DOI — not checkedDzwillo, M. Verh. Dt. Zool. Ges. 1962, 152–159 (1963).
no DOI — not checkedZander, C. D. & Dzwillo, M. Z. Wissen. Zool. 178, 276–315 (1969).
no DOI — not checkedFisher, R. A. The General Theory of Natural Selection 2nd edn (Dover, New York, 1958).
no DOI — not checkedRosen, D. E. & Kallman, K. D. Am. Mus. nat. His. Nov. 2379, 1–29 (1969).
no DOI — not checkedRobertson, S. M. thesis, Ludwigs Maximillians Univ., München (1989).
no DOI — not checkedHiggins, D. G. & Sharp, P. M. CABIOS 5, 151–153 (1989).
no DOI — not checkedMaddison, W. P. & Maddison, D. R. MacClade Ver. 3.0. Analysis of Phylogeny and Character Evolution (Sinauer, Sunderland, 1992).
no DOI — not checkedKumar, S., Tamura, K. & Nei, M. MEGA Molecular Evolutionary Genetics Analysis Vers. 1.0 (Inst. of Mol. Evol. Genetics, Pennsylvania State Univ., 1993).
no DOI — not checkedMeyer, M. K. Cour. Forsch.-Inst. Senckenberg 94, 123–130 (1987).
What this badge says. CiteStamped means the CHECKABLE references of this
work were clean at the dated check: each resolved to a known work in a public registry, and none
carried a retraction notice at that time. It says nothing about the quality, findings,
or importance of the work itself, and nothing about references deposited without a DOI.
checked 2026-07-22 — re-checked daily as this page is visited; titles and statuses come from Crossref and DataCite and are not part of the signed record
Embed this badge
Both snippets point at the live badge image and link back to this page. The badge re-renders from the daily check, so an embed never goes stale by more than a day of visits.
<a href="https://citestamp.com/citestamped/10.1038/368539a0"><img src="https://citestamp.com/citestamped/10.1038/368539a0/badge.svg" alt="CiteStamped reference-health badge" width="460" height="64"></a>
[](https://citestamp.com/citestamped/10.1038/368539a0)