Reference health
An X1X1X2X2/X1X2Y multiple sex chromosome system in a new speciesof the genus Gymnotus (Pisces, Gymnotiformes)
15/15 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.
3 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 15 checked references that resolve
resolves10.1007/BF01971773
Constitutive heterochromatin and nucleolus organizer region in the knifefish,Apteronotus albifrons (Pisces, Apteronotidae)
resolves10.1007/s004120050428
Sex chromosome evolution in fish: the formation of the neo-Y chromosome in Eigenmannia (Gymnotiformes)
resolves10.1023/A:1009287630301
Sex chromosome evolution in fish. II. Second occurrence of an X1X2Y sex chromosome system in Gymnotiformes
resolves10.1159/000057020
XX:XY sex chromosome system with X heterochromatinization: an early stage of sex chromosome differentiation in the Neotropic electric eel <i>Eigenmannia virescens</i>
resolves10.1159/000071589
Chromosome evolution in fish: sex chromosome variability in <i>Eigenmannia virescens</i> (Gymnotiformes: Sternopygidae)
resolves10.1080/00087114.2001.10589210
A molecular phylogenetic analysis in <i>Gymnotus</i> species (Pisces: Gymnotiformes) with inferences on chromosome evolution
resolves10.1023/A:1018477232354
The X1X2Y sex chromosome system in the fish Hoplias malabaricus. I. G-, C- and chromosome replication banding
resolves10.1023/A:1009243114124
The X1X2Y sex chromosome system in the fish Hoplias malabaricus. II. Meiotic analyses
resolves10.1038/sj.hdy.6800511
Chromosome evolution in the erythrinid fish, Erythrinus erythrinus (Teleostei: Characiformes)
resolves10.11646/zootaxa.277.1.1
Gymnotus ucamara: a new species of Neotropical electric fish from the Peruvian Amazon (Ostariophysi: Gymnotidae), with notes on ecology and electric organ discharges
resolves10.1159/000134665
Extensive Nucleolus Organizer Region polymorphism in Gymnotus carapo (Gymnotoidei, Gymnotidae)
resolves10.1080/00087114.1984.10797693
Chromosome Studies in<i>Gymnotus Carapo</i>and<i>Gymnotus Sp.</i>(Pisces, Gymnotidae)
resolves10.1007/BF01953855
Controlled silver-staining of nucleolus organizer regions with a protective colloidal developer: a 1-step method
resolves10.2307/1447530
Magosternarchus, a New Genus with Two New Species of Electric Fishes (Gymnotiformes: Apteronotidae) from the Amazon River Basin, South America
resolves10.1016/0014-4827(72)90558-7
A simple technique for demonstrating centromeric heterochromatin
The 3 references without a DOI — listed, not checked
no DOI — not checkedPhylogeny and Classification of Neotropical Fishes
no DOI — not checked2144_CR8
no DOI — not checked2144_CR17
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