New cases of supernumerary chromosomes in characiform fishes

Vênere, Paulo César; Miyazawa, Carlos Suetoshi; Galetti, Pedro Manoel

doi:10.1590/s1415-47571999000300010

Cited by 48 publications

(56 citation statements)

References 15 publications

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“…Few investigators have reported on the base composition of supernumerary chromosomes in fish; however, results similar to those obtained here were published by Vênere et al (1999). These authors treated the chromosomes of Leporinus sp.…”

Section: Discussionsupporting

confidence: 82%

“…NUP690, NUP1664, NUP1786, NUP1826 (NUP refers to the ichthyological collection of NUPELIA, Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura of Universidade Estadual de Maringá, PR, Brazil) (Borin and Martins-Santos, 2004) and Megalonema platanum (Günther, 1880) (Carvalho, 2008). There are few papers that have examined the base pair composition of these chromosomes in fish (Vênere et al, 1999;Maistro et al, 2000Maistro et al, , 2002Jesus et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Cytogenetic analysis of the 18S, 5S rDNA and B chromosome of Iheringichthys labrosus (Lütken, 1874) (Siluriformes, Pimelodidae)

Laudicina²,

Giuliano-Caetano

et al. 2010

Braz. J. Biol.

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Cytogenetic analyses of the location of 18S and 5S ribosomal DNAs, and the base composition of B chromosomes of Iheringichthys labrosus from Tibagi River, Paraná, Brazil, are provided. AgNORs were observed in the terminal position on the long arm of a subtelocentric chromosome pair. CMA 3 -positive staining was observed in some chromosomes, which besides being associated with NORs, were all DAPI-negative. Chromosome B showed a strong fluorescence with CMA 3. The concomitant use of 18S and 5S rDNA probes using the FISH technique revealed 18S ribosomal cistrons in a pair of subtelocentric chromosomes, on the long arm in the terminal position, coinciding with the AgNOR. The 5S sites were found in another subtelocentric pair, on the long arm in the interstitial region, near the centromere. The findings of the present study suggest that, although there are some more conserved cytogenetic characteristics, populations of I. labrosus may show their own characteristics.Keywords: supernumerary chromosome, catfish, FISH. Análise Citogenética de DNAr 18S, 5S e cromossomo B deIheringichthys labrosus (Lütken, 1874) (Siluriformes, Pimelodidae) ResumoForam realizadas análises citogenéticas em Iheringichthys labrosus do Rio Tibagi, Paraná, Brasil com a localização cromossômica dos DNAs ribossômicos 18S e 5S e a composição de bases de seus cromossomos B. As AgNORs foram observadas em posição terminal, no braço longo de um par de cromossomos subtelocêntricos. Marcações CMA 3 positivas foram observadas em alguns cromossomos e associadas com as RONs. Porém, todas estas marcações apresentaram-se DAPI negativas. O cromossomo B mostrou-se fortemente fluorescente com CMA 3 . O uso concomitante das sondas de DNAr 18S e 5S, através da técnica de FISH, revelou os cístrons ribossômicos em um par de cromossomos subtelocêntricos, em posição terminal do braço longo, coincidindo com a AgNOR. Os sítios 5S foram observados em outro par subtelocêntrico, em posição intersticial do braço longo, próximo ao centrômero. Os resultados observados no presente estudo sugerem que, embora existam algumas características citogenéticas mais conservadas, as populações de I. labrosus podem mostrar suas próprias características.Palavras-chave: cromossomo supranumerário, catfish, FISH.

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Section: Discussionsupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Cytogenetic analysis of the 18S, 5S rDNA and B chromosome of Iheringichthys labrosus (Lütken, 1874) (Siluriformes, Pimelodidae)

Laudicina²,

Giuliano-Caetano

et al. 2010

Braz. J. Biol.

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“…and Siluriformes (n=21 spp.) (Fenocchio and Bertollo 1990, Dias and Foresti 1993, Venere et al 1999, Carvalho et al 2008. In these orders, the frequency of B chromosomes is the highest found in all fish orders to date, including the large order Perciformes.…”

Section: Bs and Sex Chromosomes Accumulation In Fish Genomesmentioning

confidence: 99%

Preferential accumulation of sex and Bs chromosomes in biarmed karyotypes by meiotic drive and rates of chromosomal changes in fishes

Molina

Martínez

Bertollo

et al. 2014

An. Acad. Bras. Ciênc.

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Mechanisms of accumulation based on typical centromeric drive or of chromosomes carrying pericentric inversions are adjusted to the general karyotype differentiation in the principal Actinopterygii orders. Here, we show that meiotic drive in fish is also supported by preferential establishment of sex chromosome systems and B chromosomes in orders with predominantly bi-brachial chromosomes. The mosaic of trends acting at an infra-familiar level in fish could be explained as the interaction of the directional process of meiotic drive as background, modulated on a smaller scale by adaptive factors or specific karyotypic properties of each group, as proposed for the orthoselection model.

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“…However, Voltolin et al (2011) recently detected the presence of eight and nine supernumerary chromosomes in individuals of this species resulting from induced crossings. Supernumerary chromosomes exhibit a remarkable variation in size and morphology among fish, i.e., the occurrence of large genomic elements as macrochromosomes was described in species of the genus Astyanax (Maistro et al 1992, Salvador and Moreira-Filho 1992, Vicente et al 1996, Moreira-Filho et al 2001, Ferro et al 2003, Hashimoto et al 2008; of medium size in Rhamdia Bertollo 1990, Fenocchio et al 2000); and also as small elements identified as microchromosomes in Prochilodus (Pauls and Bertollo 1983, Venere et al 1999, Cavallaro et al 2000, Oliveira et al 2003, Voltolin et al 2009). Artoni et al (2006), studying specimens of P. lineatus from the Mogi-Guaçu River, observed the presence of three types of supernumerary microchromosomes in this species, which were classified as B-acrocentric, B-metacentric, and B-submetacentric.…”

Section: -1377mentioning

confidence: 99%

Transmission rate variation among three B chromosome variants in the fish Prochilodus lineatus (Characiformes, Prochilodontidae)

Penitente

Voltolin

Senhorini

et al. 2013

An. Acad. Bras. Ciênc.

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Cytogenetic studies were developed in Prochilodus lineatus (Valenciennes 1836), describing an interesting system of small supernumerary chromosomes. The purpose of this work is to study the frequency and morphology of B chromosomes in individuals from the parental line and the inheritance patterns of these elements in individuals obtained from controlled crosses in the species P. lineatus. The transmission rate of B chromosomes revealed a k B =0.388 for the acrocentric type, a kB=0.507 for the metacentric type and a k B =0.526 for the submetacentric type. The obtained results raise hypothesis that B-acrocentric chromosomes are involved in an extinction process in this species, while the metacentric and submetacentric supernumerary elements comprises a neutral mechanism and follows a Mendelian transmission rate.

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New cases of supernumerary chromosomes in characiform fishes

Cited by 48 publications

References 15 publications

Cytogenetic analysis of the 18S, 5S rDNA and B chromosome of Iheringichthys labrosus (Lütken, 1874) (Siluriformes, Pimelodidae)

Cytogenetic analysis of the 18S, 5S rDNA and B chromosome of Iheringichthys labrosus (Lütken, 1874) (Siluriformes, Pimelodidae)

Preferential accumulation of sex and Bs chromosomes in biarmed karyotypes by meiotic drive and rates of chromosomal changes in fishes

Transmission rate variation among three B chromosome variants in the fish Prochilodus lineatus (Characiformes, Prochilodontidae)

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