Biogeographic patterns in the chromosomal distribution of a satellite DNA in the banded tetra Astyanax fasciatus (Teleostei: Characiformes)

Kavalco, Karine Frehner; Pazza, Rubens; Brandão, Karina de Oliveira; Almeida-Toledo, Lurdes Foresti de

doi:10.1007/s13127-012-0100-8

Cited by 14 publications

(9 citation statements)

References 29 publications

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“…Paranapanema and Mogi-Guaçu river) may present several sites [Abel et al, 2006;Kavalco et al, 2007Kavalco et al, , 2011Kavalco et al, , 2013Pazza et al, 2008]. Although we have not mapped the As51 DNA in the present study, the heterochromatin distribution patterns found are very similar to those presented in Kavalco et al [2013] in specimens collected at Salesópolis, SP (upper Tietê River), confirming the proposed scenario. Notwithstanding, these few terminal heterochromatic blocks found in both karyomorphs contained the mobile element Rex3 ( figs.…”

Section: Discussionsupporting

confidence: 73%

“…In Astyanax , the constitutive heterochromatin distribution patterns have been considered a useful tool to analyze the karyotypic differentiation process Abel et al, 2006;Kavalco et al, 2010] and its influence on gene expression . Also, the occurrence of conspicuous heterochromatic blocks, mainly those on the terminal regions of subtelo-/acrocentric chromosomes, has been related to the presence of the As51 satellite DNA Pazza et al, 2008;Vicari et al, 2008], and such characteristics seem to be associated with the geographic location of the samples [Kavalco et al, 2013]. Thus, species/karyomorphs inhabiting the eastern portion of the continent (e.g.…”

Section: Discussionmentioning

confidence: 99%

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Chromosomal Mapping of Repetitive DNA and Cytochrome C Oxidase I Sequence Analysis Reveal Differentiation among Sympatric Samples of Astyanaxfasciatus (Characiformes, Characidae)

Pansonato-Alves

Hilsdorf

Utsunomia

et al. 2013

Cytogenet Genome Res

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The genus Astyanax is a specious Neotropical fish group, occurring from the south area of the United States to Argentina. During the past few years, intensive studies on representatives of this group have been performed, broadening the genetic, taxonomic and biogeographical knowledge considerably. However, phylogenetic relationships among many species remain uncertain. Significant karyotypic variations occur in A. bimaculatus, A. scabripinnis and A. fasciatus, suggesting the existence of species complexes. Samples with different diploid numbers may be found in A. fasciatus and, in some cases, morphological differentiation among them is not easily verified due to the absence of clear diagnostic characteristics. In the present study, the organization of the A. fasciatus genome from the Tietê River, Mogi das Cruzes, SP, Brazil, was analyzed, describing the karyotype structure and the chromosomal mapping of 18S and 5S ribosomal DNA (rDNA), H1 and H3 histones genes, telomeric DNA, and Rex3 transposable element. Sequencing of the cytochrome c oxidase I (COI) gene was also performed. Chromosomal analyses highlighted the occurrence of 2 distinct karyomorphs in the referred population, one with 2n = 46 and the other with 2n = 48 chromosomes. Furthermore, physical mapping of the repetitive sequences and nucleotide analysis of the COI gene reinforce the genomic differentiation between those karyomorphs and corroborate the existence of 2 different lineages morphologically similar to A. fasciatus living in sympatry.

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Section: Discussionsupporting

confidence: 73%

Section: Discussionmentioning

confidence: 99%

Chromosomal Mapping of Repetitive DNA and Cytochrome C Oxidase I Sequence Analysis Reveal Differentiation among Sympatric Samples of Astyanaxfasciatus (Characiformes, Characidae)

Pansonato-Alves

Hilsdorf

Utsunomia

et al. 2013

Cytogenet Genome Res

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“…), Tietê river (Kavalco et al . ), Tibagi river at the Paranapanema river's basin (Artoni et al . ), all of them belonging to the Alto Paraná river's basin, Paranaíba river does not seem to show different sympatric cytotype for A. fasciatus .…”

Section: Discussionmentioning

confidence: 99%

Phenotypic plasticity and karyotype conservation in allopatric populations of Astyanax aff. fasciatus (Teleostei, Characiformes) at the Upper Paraná river basin

et al. 2015

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Pazza R, Argento R.F.M., Mariano I.H.S., Kavalco K.F. 2016. Phenotypic plasticity and karyotype conservation in allopatric populations of Astyanax aff. fasciatus (Teleostei, Characiformes) at the Upper Paran a river basin. -Acta Zoologica (Stockholm) 97: 241-245.Genus Astyanax is known by its wide genetic and morphological diversity. Among the South America's fish, it is one of the most studied groups and with greatest number of characterized population. At the present work, the combined approach of morphological and genetic data analysis was applied. Cytogenetic and morphometric studies were performed in populations of Astyanax aff. fasciatus originating from Parana ıba river and São João river, both from the hydrographic basin of Parana ıba river. Fish originating from a third place at the Mogi-Guac ßu river (Tietê river's basin) and with 2n = 46 chromosomes also went through morphometric analysis. The morphologic data evidenced the populational structuring, following the geographical distribution of the subjects. Cytogenetic data disclosed the same diploid number and karyotype formula for both populations. The other cytogenetic markers comply with the literature. These data show that the two populations of A. aff. fasciatus do not differ among themselves concerning the chromosomal structure, but they structure themselves regarding morphometry. Aspects of evolution of the group are discussed facing this study.

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“…Six distinct samples were analyzed, including three different species (Table 1). From these, B chromosomes were already described in two samples, including A. bockmanni and A. paranae (Daniel et al 2012;Silva et al 2014), but not in the population of A. fasciatus from the Mogi-Guaçu river basin (Pazza et al 2008;Kavalco et al 2012). After analysis, specimens were deposited at the fish collection of the Laboratório de Biologia e Genética de Peixes (LBP) at UNESP, Botucatu, São Paulo, Brazil, under the vouchers LBP15262 (A. bockmanni-Água da Madalena stream), LBP19574 (A. fasciatus-Água da Madalena stream), LBP19573 (A. fasciatus-Córrego da Araras stream) and LBP13340 (A. paranae-Água da Madalena stream).…”

Section: Origin Of Samples and Karyotype Analysismentioning

confidence: 99%

“…The extensive chromosome diversity found between populations of A. fasciatus, A. scabripinnis, and A. altiparanae has led some authors to consider them as 'species complexes' (Moreira-Filho and Bertollo 1991;Artoni et al 2006;Castro et al 2015) because it is sometimes difficult to establish whether two populations of morphologically similar individuals actually share a common genic pool or whether they belong to different cryptic species (Pansonato-Alves et al 2013;Castro et al 2015). Consequently, several cytogenetic studies have shown a remarkable karyotype diversification in this group, including different diploid numbers, hybrid cytotypes and differential intra-genomic spread of repetitive DNAs (Moreira-Filho and Bertollo 1991;Mantovani et al 2005;Pazza et al 2006;Vicari et al 2008;Kavalco et al 2012;Silva et al 2013;Castro et al 2014). Moreover, the occurrence of several types of B chromosomes differing in morphology, size and banding patterns has also been reported (Moreira-Filho et al 2004;Fernandes and Martins-Santos 2005;Carvalho et al 2008;Hashimoto et al 2008;Oliveira et al 2009;Santos et al 2013;Daniel et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Origin of B chromosomes in the genus Astyanax (Characiformes, Characidae) and the limits of chromosome painting

et al. 2016

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Eukaryote genomes are frequently burdened with the presence of supernumerary (B) chromosomes. Their origin is frequently investigated by chromosome painting, under the hypothesis that sharing the repetitive DNA sequences contained in the painting probes is a sign of common descent. However, the intragenomic mobility of many anonymous DNA sequences contained in these probes (e.g., transposable elements) adds high uncertainty to this conclusion. Here we test the validity of chromosome painting to investigate B chromosome origin by comparing its results for seven B chromosome types in two fish species genus Astyanax, with those obtained (1) by means of the physical mapping of 18S ribosomal DNA (rDNA), H1 histone genes, the As51 satellite DNA and the (AC)15 microsatellite, and (2) by comparing the nucleotide sequence of one of these families (ITS regions from ribosomal DNA) between genomic DNA from B-lacking individuals in both species and the microdissected DNA from two metacentric B chromosomes found in these same species. Intra- and inter-specific painting suggested that all B chromosomes that were assayed shared homologous DNA sequences among them, as well as with a variable number of A chromosomes in each species. This finding would be consistent with a common origin for all seven B chromosomes analyzed. By contrast, the physical mapping of repetitive DNA sequences failed to give support to this hypothesis, as no more than two B-types shared a given repetitive DNA. Finally, sequence analysis of the ITS regions suggested that at least some of the B chromosomes could have had a common origin.

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Biogeographic patterns in the chromosomal distribution of a satellite DNA in the banded tetra Astyanax fasciatus (Teleostei: Characiformes)

Cited by 14 publications

References 29 publications

Chromosomal Mapping of Repetitive DNA and Cytochrome C Oxidase I Sequence Analysis Reveal Differentiation among Sympatric Samples of <b><i>Astyanax</i></b><b><i>fasciatus</i></b> (Characiformes, Characidae)

Chromosomal Mapping of Repetitive DNA and Cytochrome C Oxidase I Sequence Analysis Reveal Differentiation among Sympatric Samples of <b><i>Astyanax</i></b><b><i>fasciatus</i></b> (Characiformes, Characidae)

Phenotypic plasticity and karyotype conservation in allopatric populations of Astyanax aff. fasciatus (Teleostei, Characiformes) at the Upper Paraná river basin

Origin of B chromosomes in the genus Astyanax (Characiformes, Characidae) and the limits of chromosome painting

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