Occurrence of B chromosomes in Cyphocharax modestus (Fernández-Yépez, 1948) and Steindachnerina insculpta (Fernández-Yépez, 1948)(Characiformes, Curimatidae) from the Tibagi River basin (Paraná State, Brazil)

Gravena, Waleska; Teribele, R; Giuliano-Caetano, Lúcia; Al, Dias

doi:10.1590/s1519-69842007000500014

Cited by 7 publications

(5 citation statements)

References 3 publications

(2 reference statements)

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“…The B microchromosome was observed in four species of curimatids collected from different populations: Cyphocharax gouldingi ( Venere et al 2008 ), Cyphocharax modestus ( Gravena et al 2007 ), Cyphocharax spilotus ( Brassesco et al 2004 ), Steindachnerina insculpta ( Gravena et al 2007 ), and three new species assessed in this study: Cyphocharax saladensis , Cyphocharax voga and Steindachnerina biornata , representing 18.42% of all species studied, always small in size with inter and intra individual variation ( Table 4 ). Among these, Cyphocharax modestus and Steindachnerina insculpta are the species that possess B microchromosomes in all populations studied, besides being the species that have the widest range of cytogenetic studies to date.…”

Section: Resultsmentioning

confidence: 53%

“… References: 1 Venere and Galetti (1985) 2 Venere, Galetti (1989) 3 Feldberg et al (1992) 4 Feldberg et al (1993) 5 Oliveira and Foresti (1993) 6 Venerea and Galetti Jr. (1995) 7 Martins et al (1996) 8 Navarrete and Júlio-Jr. (1997) 9 Venere et al (1999) 10 Carvalho et al (2001) 11 Fenocchio et al (2003) 12 Brassesco et al (2004) 13 Gravena et al (2007) 14 Teribele et al (2008) 15 Venere et al (2008) 16 De Rosa et al (2007) 17 De Rosa-Santos et al (2008) 18 present study. …”

Section: Resultsmentioning

confidence: 57%

“…The first work to record the presence of the B chromosome in the family Curimatidae was carried out by Venere and Galetti (1985) in an individual of Cyphocharax modestus (Fernández-Yépez, 1948) collected from the Tiete River, municipality of Águas de São Pedro/SP, which proved to be entirely heterochromatic. Since then, other populations of Cyphocharax modestus and other species, such as Cyphocharax spilotus (Vari, 1987), Cyphocharax gouldingi Vari, 1992 and Steindachnerina insculpta (Fernández-Yépez, 1948) have shown the presence of this extra chromosome ( Gravena et al 2007 ; Venere et al 2008 ).…”

Section: Introductionmentioning

confidence: 99%

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B microchromosomes in the family Curimatidae (Characiformes): mitotic and meiotic behavior

Sampaio¹,

Gravena²,

Gouveia³

et al. 2011

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In the present work, six curimatid species were analyzed: Cyphocharax voga (Hensel, 1870), Cyphocharax spilotus (Vari, 1987), Cyphocharax saladensis (Meinken, 1933), Cyphocharax modestus (Fernández-Yépez, 1948), Steindachnerina biornata (Braga & Azpelicueta, 1987) and Steindachnerina insculpta (Fernández-Yépez, 1948) collected from two hydrographic basins. All samples presented 2n=54 meta-submetacentric (m-sm) chromosomes and FN equal to 108, and 1 or 2 B microchromosomes in the mitotic and meiotic cells of the six sampled populations showing inter-and intraindividual variation. The analysis of the meiotic cells in Cyphocharax saladensis, Cyphocharax spilotus, and Cyphocharax voga showed a modal number of 54 chromosomes in the spermatogonial metaphases and 27 bivalents in the pachytene, diplotene, diakinesis and in metaphase I stages, and 27 chromosomes in metaphase II; in Cyphocharax modestus, Steindachnerina biornata, and Steindachnerina insculpta, spermatogonial metaphases with 54 chromosomes and pachytene and metaphase I with 27 bivalents were observed. The B microchromosome was observed as univalent in the spermatogonial metaphase of Cyphocharax spilotus, in the pachytene stage in the other species, with the exception of Cyphocharax saladensis, and Steindachnerina biornata in metaphase I. New occurrences of the B microchromosome in Cyphocharax voga, Cyphocharax saladensis and Steindachnerina biornata were observed, confirming that the presence of this type of chromosome is a striking characteristic of this group of fish.

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Section: Resultsmentioning

confidence: 53%

Section: Resultsmentioning

confidence: 57%

Section: Introductionmentioning

confidence: 99%

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B microchromosomes in the family Curimatidae (Characiformes): mitotic and meiotic behavior

Sampaio¹,

Gravena²,

Gouveia³

et al. 2011

CCG

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“…In Cyphocharax modestus , Cyphocharax saladensis , and Steindachnerina insculpta , the B microchromosome presented itself entirely heterochromatic, indicating the total absence of gene activity, as in other studied populations of Cyphocharax modestus (Gravena et al 2007; Venere et al 1999) and Steindachnerina insculpta (Gravena et al 2007). The heterochromatic B chromosome of Cyphocharax saladensis proved CMA 3 + , therefore, rich in GC base pairs.…”

Section: Discussionmentioning

confidence: 50%

Evolutionary trends in the family Curimatidae (Characiformes): inferences from chromosome banding

Sampaio¹,

Pires²,

Venturelli³

et al. 2016

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The family Curimatidae is a fish group usually considered chromosomally conserved in their diploid number. However, some studies show small changes in the karyotype microstructure, and the presence of B chromosomes, indicating a chromosomal diversification within the group, even if structural changes in the karyotypes are not visible. Few studies associate this trait with an evolutionary pattern within the family. This study aimed to characterize the karyotype, (NORs)nucleolus organizer regions , and heterochromatin distribution of six species of Curimatidae of the genera Cyphocharax Fowler, 1906 and Steindachnerina Fowler, 1906: Cyphocharax voga (Hensel, 1870), Cyphocharax spilotus (Vari, 1987), Cyphocharax saladensis (Meinken, 1933), Cyphocharax modestus (Fernández-Yépez, 1948), Steindachnerina biornata (Braga et Azpelicueta, 1987) and Steindachnerina insculpta (Fernández-Yépez, 1948) and contribute data to a better understanding of the mechanisms involved in the chromosomal evolution of this group of fish. All specimens had 2n=54, m-sm, and B microchromosomes. Five species exhibited single NORs, except for Steindachnerina biornata, which showed a multiple pattern of ribosomal sites. NORs were chromomycin A3 positive (CMA3+) and 4’-6-diamino-2-phenylindole (DAPI-) negative, exhibiting differences in the pair and chromosomal location of each individual of the species. FISH with 5S rDNA probe revealed sites in the pericentrometic position of a pair of chromosomes of five species. However, another site was detected on a metacentric chromosome of Cyphocharax spilotus. Heterochromatin distributed both in the pericentromeric and some terminal regions was revealed to be CMA3+/DAPI-. These data associated with the previously existing ones confirm that, although Curimatidae have a very conservative karyotype macrostructure, NORs and heterochromatin variability are caused by mechanisms of chromosome alterations, such as translocations and/or inversions, leading to the evolution and diversification of this group of fish.

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“…(1996 ); 7- Navarrete and Júlio Jr (1997 ); 8- Venere et al . (1999) ; 9- Carvalho et al (2001 ); 10- Fenocchio et al (2003 ); 11- Brassesco et al (2004 ); 12- De Rosa et al (2006 ); 13- Gravena et al (2007 ); 14- De Rosa et al . (2007 ); 15- Teribele et al (2008 ); 16- Venere et al .…”

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Karyotype variability in six Amazonian species of the family Curimatidae (Characiformes) revealed by repetitive sequence mapping

et al. 2022

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Fishes of the Curimatidae family represent one of the most important freshwater ichthyofauna groups of Central and South America, with 117 recognized species distributed in eight genera. In this study, six species -Curimata inornata, Curimatella dorsalis, and Psectrogaster falcata collected from the Lower Araguaia River, Pará, Brazil; Curimata vittata, Curimatella meyeri, and Psectrogaster rutiloides collected from the Catalão Lake, Amazonas, Brazil -were cytogenetically analyzed, investigate the occurrence and distribution of repetitive DNA classes in the karyotypes. All species had 2n=54 metacentric/submetacentric chromosomes. Despite the conservative diploid number, we observed variations in the karyotypic structure among species. Ribosomal DNA (rDNA) 18S and 5S were found in single or multiple sites, with the first report of synteny in Curimatella dorsalis, and the occurrence of several interstitial telomeric sequences (ITSs) in species of the genera Curimatella and Psectrogaster. Interspecific karyotypic diversity both concerning structure and location/position of the nucleolar organizer regions (NOR) and ribosomal DNA, suggesting the occurrence of several non-Robertsonian rearrangements driving the evolution of this family.

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Occurrence of B chromosomes in Cyphocharax modestus (Fernández-Yépez, 1948) and Steindachnerina insculpta (Fernández-Yépez, 1948)(Characiformes, Curimatidae) from the Tibagi River basin (Paraná State, Brazil)

Cited by 7 publications

References 3 publications

B microchromosomes in the family Curimatidae (Characiformes): mitotic and meiotic behavior

B microchromosomes in the family Curimatidae (Characiformes): mitotic and meiotic behavior

Evolutionary trends in the family Curimatidae (Characiformes): inferences from chromosome banding

Karyotype variability in six Amazonian species of the family Curimatidae (Characiformes) revealed by repetitive sequence mapping

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