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Cytogenetic analysis of three sympatric <i>Gymnotus</i> (Gymnotiformes, Gymnotidae) species verifies invasive species in the Upper Paraná River basin, Brazil
16/16 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.
13 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 16 checked references that resolve
resolves10.1590/S1519-69842003000100002
Reproductive aspects of piranhas Serrasalmus spilopleura and Serrasalmus marginatus into the Upper Paraná River, Brazil
resolves10.11646/zootaxa.287.1.1
Seven new species of the Neotropical electric fish Gymnotus (Teleostei, Gymnotiformes) with a redescription of G. carapo (Linnaeus)
resolves10.1017/S1477200004001574
Phylogenetic systematics and historical biogeography of the Neotropical electric fish<i>Gymnotus</i>(Teleostei: Gymnotidae)
resolves10.1111/j.1601-5223.2004.01830.x
Karyological evidence for interspecific hybridization between Cichla monoculus and C. temensis (Perciformes, Cichlidae) in the Amazon
resolves10.1034/j.1601-5223.2003.01714.x
Chromosomal divergence and maintenance of sympatric Characidium fish species (Crenuchidae, Characidiinae)
resolves10.1643/CI-03-242R2
Three New Species from a Diverse, Sympatric Assemblage of the Electric Fish Gymnotus (Gymnotiformes: Gymnotidae) in the Lowland Amazon Basin, with Notes on Ecology
resolves10.1159/000134665
Extensive Nucleolus Organizer Region polymorphism in Gymnotus carapo (Gymnotoidei, Gymnotidae)
resolves10.1080/00087114.1998.10797414
High intraspecific karyological conservation in four species of<i>Gymnotus</i>(Pisces: Gymnotiformes) from Southeastern Brazilian basins
resolves10.1590/S1415-47572000000400016
Species diversity and geographic distribution of Gymnotus (Pisces: Gymnotiformes) by nuclear (GGAC)n microsatellite analysis
resolves10.11646/zootaxa.933.1.1
A new Gymnotus (Teleostei: Gymnotiformes: Gymnotidae) from the Pantanal Matogrossense of Brazil and adjacent drainages: continued documentation of a cryptic fauna
resolves10.1080/00087114.1985.10797729
Karyotypic Study of Some Species of Family Parodontidae (Pisce—Cypriniformes)
resolves10.1023/A:1020633710622
Diversity and Genetic Distance in Populations of Steindachnerina in the Upper Paraná River Floodplain of Brazil
resolves10.1508/cytologia.68.159
Occurrence of Three Sympatric Cytotypes of Hoplias malabaricus (Pisces,Erythrinidae) in the Upper Parana River Foodplain (Brazil)
resolves10.1508/cytologia.69.155
A New Report of Multiple Sex Chromosome System in the Order Gymnotiformes (Pisces)
resolves10.1007/s10641-005-2144-5
An X1X1X2X2/X1X2Y multiple sex chromosome system in a new speciesof the genus Gymnotus (Pisces, Gymnotiformes)
resolves10.1046/j.1365-2427.2003.01069.x
Impacts of freshwater invaders at different levels of ecological organisation, with emphasis on salmonids and ecosystem consequences
The 13 references without a DOI — listed, not checked
no DOI — not checkedRehabilitation of Freshwater Fishes
no DOI — not checkedObservation of an invasions of piranha Serrasalmus marginatus Valenciennes, 1847 (Osteichthyes, Serrasalmidae) into the Upper Paraná River, Brasil
no DOI — not checkedSpecies diversity and phylogenetic systematics of American knifefishes (Gymnotiformes, Teleostei)
no DOI — not checkedBorin L. A.&Júlio H. F.Jr(1994).Ocorrência de um novo citótipo deGymnotus carapo(Siluriformes Gymnotoidei) no alto Paraná. (Abstract) p. 43.V Simpósio de Citogenética Evolutiva e Aplicada de Peixes Neotropicais Botucatu Brazil.
no DOI — not checkedComparative cytogenetics studies of Curimatide (Pisces, Characiformes) from the middle Paraná River (Argentina)
no DOI — not checkedCheck List of the Freshwaters of South and Central America
no DOI — not checkedBiological Invasions
no DOI — not checkedJorge L. C. (1995).Estudos citogenéticos comparativos de algumas espécies de peixes da região de Corrientes‐Argentina com as do Alto Paraná. Master Thesis.Universidade Federal de São Carlos SP.
no DOI — not checkedConfirmation of two different cytotypes for the neotropical fish Hoplias malabaricus Gill 1903 (Characiformes)
no DOI — not checkedOliveira A. V. (2004).Relações genéticas entre populações do gêneroCichlaintroduzidas na bacia do Rio Paraná evidenciadas por marcadores nucleares e do genoma mitocondrial. Doctoral Thesis.Universidade Estadual de Maringá PR.
no DOI — not checkedPlanície de Inundação do Alto Rio Paraná
no DOI — not checkedChromosome evolution and phylogenetic relationship of some neotropical characiformes of the family Curimatidae
no DOI — not checkedChromosome divergences between two sympatric characid fishes of the genus Bryconamericus
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