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de Farias EF, da Silva HCM, de Carvalho APC, Martins RDM, Belem-Costa A, Duncan WP, Gomes ALS, Matoso DA. Molecular identification of Austrodiplostomum sp., an eye parasite among farmed tambaqui in Amazonia. Genet Mol Biol 2023; 46:e20210345. [PMID: 36734368 PMCID: PMC9900473 DOI: 10.1590/1678-4685-gmb-2021-0345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 09/21/2022] [Indexed: 02/04/2023] Open
Abstract
Austrodiplostomum Szidat & Nani, 1951 is a genus of parasitic digenetic trematodes widely distributed in the Neotropical region. Infects a wide variety of species, families and requests for freshwater fish. We identify samples of Austrodiplostomum sp, based on metacercariae isolates from eyes of tambaqui (Colossoma macropomum), a fish of high commercial importance in Brazil, and widely consumed by the population of the northern region. The sequences obtained clustered with A. compactum. This is the first report of the occurrence of diplostomids in farmed tambaqui in Amazonia.
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Affiliation(s)
- Eduardo Freitas de Farias
- Instituto Nacional de Pesquisas da Amazônia, Programa de Pós-Graduação em Genética, Conservação e Biologia Evolutiva, Manaus, AM, Brazil
| | - Hallana Cristina Menezes da Silva
- Instituto Nacional de Pesquisas da Amazônia, Programa de Pós-Graduação em Genética, Conservação e Biologia Evolutiva, Manaus, AM, Brazil
| | - Ana Paula Costa de Carvalho
- Instituto Nacional de Pesquisas da Amazônia, Programa de Pós-Graduação em Genética, Conservação e Biologia Evolutiva, Manaus, AM, Brazil
| | - Rodrigo de Melo Martins
- Universidade Federal do Amazonas, Instituto de Ciências Biológicas, Departamento de Genética, Laboratório de Biotecnologia e Citogenômica Animal, Manaus, AM, Brazil
| | - Andrea Belem-Costa
- Universidade Federal do Amazonas, Instituto de Ciências Biológicas, Departamento de Parasitologia, Laboratório de Imunologia de Animais Aquáticos. Manaus, AM, Brazil
| | - Wallice Paxiúba Duncan
- Universidade Federal do Amazonas, Instituto de Ciências Biológicas, Departamento de Morfologia, Laboratório de Morfologia Funcional, Manaus, AM, Brazil
| | - Ana Lúcia Silva Gomes
- Universidade Federal do Amazonas, Instituto de Ciências Biológicas, Departamento de Parasitologia, Laboratório de Parasitologia de Animais Aquáticos, Manaus, AM, Brazil
| | - Daniele Aparecida Matoso
- Universidade Federal do Amazonas, Instituto de Ciências Biológicas, Departamento de Genética, Laboratório de Biotecnologia e Citogenômica Animal, Manaus, AM, Brazil
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da Silva M, Matoso DA, Artoni RF, Feldberg E. Karyotypic Diversity and Evolutionary Trends in Neotropical Electric Fish of the Genus Gymnotus (Gymnotiformes: Gymnotidae). Zebrafish 2019; 16:308-320. [PMID: 31045488 DOI: 10.1089/zeb.2018.1716] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Electric fish of the order Gymnotiformes are endemic to the Neotropical region, and their highest diversity is observed in the Amazon region. The family Gymnotidae, which consists of the genera Electrophorus and Gymnotus, is a natural group and is located at the base of the phylogeny of the order. Gymnotus is a widely distributed and specious genus with high karyotypic diversity, especially concerning to the diploid number and the locations of repetitive sequences. Our karyotyping results in five species of the family Gymnotidae (Gymnotus ucamara, Gymnotus cf. stenoleucus, Gymnotus cf. pedanopterus, Gymnotus mamiraua, and Gymnotus carapo "Maranhão") corroborate the proposal of plasticity of the diploid number in this group. Moreover, in this study, we propose that the 5S ribosomal DNA (rDNA) sequences were species-specific markers that act as a potential biogeographical marker for the genus. Besides, the sequence's location, particularly in G. mamiraua from Central Amazon, shows a close relationship with 5S of the Gymnotus species, with 54 chromosomes, from the Paraná-Paraguay basin in the Center-South of Brazil. Considering that the ancestral diploid number for Gymnotidae is 52 chromosomes, we also suggest that the trend in the family is toward a decrease in the chromosome number. However, the carapo clade stands out in this regard, with an increase and a decrease in chromosome number; this pattern may be reinforced with the ecologic behaviors and the geodispersal patterns of this clade.
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Affiliation(s)
- Maelin da Silva
- 1 Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Ponta Grossa, Brazil
| | - Daniele Aparecida Matoso
- 2 Departamento de Genética, Instituto de Ciências Biológicas, Universidade Federal do Amazonas, Manaus, Brazil
| | - Roberto Ferreira Artoni
- 1 Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Ponta Grossa, Brazil
| | - Eliana Feldberg
- 3 Programa de Pós Graduação em Genética, Conservação e Biologia Evolutiva, Instituto Nacional de Pesquisas da Amazônia, Manaus, Brazil
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Favarato RM, Ribeiro LB, Feldberg E, Matoso DA. Chromosomal Mapping of Transposable Elements of the Rex Family in the Bristlenose Catfish, Ancistrus (Siluriformes, Loricariidae), from the Amazonian Region. J Hered 2017; 108:254-261. [PMID: 27940473 DOI: 10.1093/jhered/esw084] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Accepted: 12/02/2016] [Indexed: 11/13/2022] Open
Abstract
Repetitive DNA sequences are present in the genome of basically every known organism, and transposable elements (TE) are one of the most representative sequences involved in chromosomal rearrangements and the genomic evolution of eukaryotes. In fish, the non-LTR retrotransposon TEs, Rex1, Rex3, and Rex6, are widely distributed in fish genomes and are the best-characterized TEs in several species. In the current study, three of these retroelements were physically mapped, through fluorescent in situ hybridization (FISH), in 7 species (71 specimens) of the genus Ancistrus, known as bristlenose catfish: Ancistrus ranunculus, Ancistrus sp. 1 "Purus," Ancistrus sp. 2 "Catalão," Ancistrus dolichopterus, Ancistrus maximus, Ancistrus aff. dolichopterus, and Ancistrus dubius. Rex1, Rex3, and Rex6 showed a cluster distribution, mainly in the terminal and pericentromeric portions, in heterochromatic and euchromatic regions, and did not occur in sexual chromosomes; however, the number and position of the clusters varied between species. This TE distribution suggests its implication in the karyotypic evolution of these species, without affecting the rise of sexual chromosome systems in Ancistrus, in view of their chromosomal variation.
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Affiliation(s)
- Ramon Marin Favarato
- Programa de Pós-Graduação em Genética, Conservação e Biologia Evolutiva, Instituto Nacional de Pesquisas da Amazônia, Petrópolis, Manaus, Amazonas, Brazil
| | - Leila Braga Ribeiro
- Programa de Pós-Graduação em Genética, Conservação e Biologia Evolutiva, Instituto Nacional de Pesquisas da Amazônia, Petrópolis, Manaus, Amazonas, Brazil.,Centro de Ciências da Saúde, Universidade Federal de Roraima, Boa Vista, Brazil
| | - Eliana Feldberg
- Programa de Pós-Graduação em Genética, Conservação e Biologia Evolutiva, Instituto Nacional de Pesquisas da Amazônia, Petrópolis, Manaus, Amazonas, Brazil
| | - Daniele Aparecida Matoso
- Departamento de Genética, Instituto de Ciências Biológicas, Universidade Federal do Amazonas, Manaus, Brazil
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Silva HCM, Martins-Júnior MMC, Ribeiro LB, Matoso DA. Fluorescence Image Analyzer - FLIMA: software for quantitative analysis of fluorescence in situ hybridization. Genet Mol Res 2017; 16:gmr-16-01-gmr.16019658. [PMID: 28363012 DOI: 10.4238/gmr16019658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The Fluorescence Image Analyzer (FLIMA) software was developed for the quantitative analysis of images generated by fluorescence in situ hybridization (FISH). Currently, the images of FISH are examined without a coefficient that enables a comparison between them. Through GD Graphics Library, the FLIMA software calculates the amount of pixels on image and recognizes each present color. The coefficient generated by the algorithm shows the percentage of marks (probes) hybridized on the chromosomes. This software can be used for any type of image generated by a fluorescence microscope and is able to quantify digoxigenin probes exhibiting a red color, biotin probes exhibiting a green color, and double-FISH probes (digoxigenin and biotin used together), where the white color is displayed.
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Affiliation(s)
- H C M Silva
- Laboratório de Evolução Aplicada, Instituto de Ciências Biológicas, Universidade Federal do Amazonas, Manaus, AM, Brasil .,Programa de Pós-Graduação em Genética, Conservação e Biologia Evolutiva, Instituto Nacional de Pesquisas da Amazônia, Manaus, AM, Brasil
| | | | - L B Ribeiro
- Centro de Ciências da Saúde, Coordenação de Medicina, Universidade Federal de Roraima, Boa Vista, RR, Brasil
| | - D A Matoso
- Laboratório de Evolução Aplicada, Instituto de Ciências Biológicas, Universidade Federal do Amazonas, Manaus, AM, Brasil.,Laboratório de Citogenômica Animal, Instituto de Ciências Biológicas, Universidade Federal do Amazonas, Manaus, AM, Brasil
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Ribeiro LB, Moraes Neto A, Artoni RF, Matoso DA, Feldberg E. Chromosomal Mapping of Repetitive Sequences (Rex3, Rex6, and rDNA Genes) in Hybrids Between Colossoma macropomum (Cuvier, 1818) and Piaractus mesopotamicus (Holmberg, 1887). Zebrafish 2017; 14:155-160. [PMID: 28067606 DOI: 10.1089/zeb.2016.1378] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Some species of Characiformes are known for their high economic value, such as Colossoma macropomum and Piaractus mesopotamicus, and are used in aquaculture programs to generate hybrid tambacu (interbreeding of C. macropomum females and P. mesopotamicus males). The present work aimed to investigate the location of the Rex3 and Rex6 transposable elements in the hybrid and in the species, in addition to checking the genomic organization of the 18S and 5S rDNA in tambacu. The diploid number found for the hybrid was equal to 54 chromosomes, with heterochromatic blocks distributed mainly in the centromeric portions. The chromosomal location of the mobile elements Rex3 and Rex6 in C. macropomum, P. mesopotamicus, and in the hybrid between these species enabled knowledge expansion and the generation of data on such mobile elements. In addition, the location of such elements is not related to the distribution of ribosomal DNA sites. The mapping of the 18S rDNA was shown to be effective in cytogenetic identification of the hybrid tambacu, allowing for differentiation from the parent species and from the hybrid between C. macropomum and the other species from Piaractus (P. brachypomus).
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Affiliation(s)
- Leila Braga Ribeiro
- 1 Centro de Ciências da Saúde, Universidade Federal de Roraima (UFRR) , Boa Vista, Brazil
| | - Americo Moraes Neto
- 2 Programa de Pós-Graduação em Ciência Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade Federal de Mato Grosso do Sul (UFMS) , Campo Grande, Brazil
| | - Roberto Ferreira Artoni
- 3 Programa de Pós-Graduação em Biologia Evolutiva, Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa (UEPG) , Ponta Grossa, Brazil
| | | | - Eliana Feldberg
- 5 Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA) , Manaus, Brazil
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Ferreira M, Garcia C, Matoso DA, de Jesus IS, Feldberg E. A new multiple sex chromosome system X1X1X2X2/X1Y1X2Y2 in Siluriformes: cytogenetic characterization of Bunocephalus coracoideus (Aspredinidae). Genetica 2016; 144:591-599. [DOI: 10.1007/s10709-016-9927-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 09/19/2016] [Indexed: 11/29/2022]
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Favarato RM, da Silva M, de Oliveira RR, Artoni RF, Feldberg E, Matoso DA. Cytogenetic Diversity and the Evolutionary Dynamics of rDNA Genes and Telomeric Sequences in the Ancistrus Genus (Loricariidae: Ancistrini). Zebrafish 2016; 13:103-11. [DOI: 10.1089/zeb.2015.1140] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Ramon Marin Favarato
- Programa de Pós-Graduação em Genética, Conservação e Biologia Evolutiva, Instituto Nacional de Pesquisas da Amazônia, Manaus, Brazil
| | - Maelin da Silva
- Programa de Pós-Graduação em Genética, Conservação e Biologia Evolutiva, Instituto Nacional de Pesquisas da Amazônia, Manaus, Brazil
| | - Renildo Ribeiro de Oliveira
- Coordenação de Biodiversidade, Programa de Pós-Graduação em Biologia de Água Doce e Pesca Interior, Instituto Nacional de Pesquisas da Amazônia, Manaus, Brazil
| | - Roberto Ferreira Artoni
- Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Ponta Grossa, Brazil
| | - Eliana Feldberg
- Programa de Pós-Graduação em Genética, Conservação e Biologia Evolutiva, Instituto Nacional de Pesquisas da Amazônia, Manaus, Brazil
| | - Daniele Aparecida Matoso
- Departamento de Genética, Instituto de Ciências Biológicas, Universidade Federal do Amazonas, Manaus, Brazil
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da Silva M, Matoso DA, Artoni RF, Feldberg E. New Approach Data in Electric Fish (Teleostei: Gymnotus): Sex Chromosome Evolution and Repetitive DNA. Zebrafish 2014; 11:528-35. [DOI: 10.1089/zeb.2013.0966] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Maelin da Silva
- Programa de Pós Graduação em Genética, Conservação e Biologia Evolutiva, Instituto Nacional de Pesquisas da Amazônia, Manaus, Amazonas, Brazil
| | - Daniele Aparecida Matoso
- Departamento de Biologia, Instituto de Ciências Biológicas, Universidade Federal do Amazonas, Manaus, Amazonas, Brazil
| | - Roberto Ferreira Artoni
- Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Ponta Grossa, Paraná, Brazil
| | - Eliana Feldberg
- Programa de Pós Graduação em Genética, Conservação e Biologia Evolutiva, Instituto Nacional de Pesquisas da Amazônia, Manaus, Amazonas, Brazil
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Ribeiro LB, Matoso DA, Feldberg E. Chromosome mapping of repetitive sequences in four Serrasalmidae species (Characiformes). Genet Mol Biol 2013; 37:46-53. [PMID: 24688290 PMCID: PMC3958325 DOI: 10.1590/s1415-47572014000100009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Accepted: 12/06/2013] [Indexed: 11/21/2022] Open
Abstract
The Serrasalmidae family is composed of a number of commercially interesting species, mainly in the Amazon region where most of these fishes occur. In the present study, we investigated the genomic organization of the 18S and 5S rDNA and telomeric sequences in mitotic chromosomes of four species from the basal clade of the Serrasalmidae family: Colossoma macropomum, Mylossoma aureum, M. duriventre, and Piaractus mesopotamicus, in order to understand the chromosomal evolution in the family. All the species studied had diploid numbers 2n = 54 and exclusively biarmed chromosomes, but variations of the karyotypic formulas were observed. C-banding resulted in similar patterns among the analyzed species, with heterochromatic blocks mainly present in centromeric regions. The 18S rDNA mapping of C. macropomum and P. mesopotamicus revealed multiple sites of this gene; 5S rDNA sites were detected in two chromosome pairs in all species, although not all of them were homeologs. Hybridization with a telomeric probe revealed signals in the terminal portions of chromosomes in all the species and an interstitial signal was observed in one pair of C. macropomum.
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Affiliation(s)
- Leila Braga Ribeiro
- Laboratório de Genética Animal, Instituto Nacional de Pesquisa da Amazônia, Manaus, AM, Brazil
| | - Daniele Aparecida Matoso
- Laboratório de Evolução Aplicada, Instituto de Ciências Biológicas, Universidade Federal do Amazonas, Manaus, AM, Brazil
| | - Eliana Feldberg
- Laboratório de Genética Animal, Instituto Nacional de Pesquisa da Amazônia, Manaus, AM, Brazil
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Matoso DA, da Silva M, Artoni RF, Torres RA. Molecular taxonomy and evolutionary hypothesis concerning Astyanax fasciatus (Characiformes, Characidae) from Vila Velha State Park and Tibagi and Iguaçu Rivers. Genet Mol Res 2013; 12:631-8. [PMID: 23546944 DOI: 10.4238/2013.march.7.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- D A Matoso
- Departamento de Biologia, Universidade Federal do Amazonas, Manaus, AM, Brasil.
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Matoso DA, da Silva M, Cortinhas MCS, Cestari MM, de Almeida MC, Vicari MR, Artoni RF. Two genetic stocks of Steindachneridion melanodermatum living in sympatry in nature and genetic variability of wild parents and F₁ generation. Genet Mol Res 2011; 10:2606-12. [PMID: 22057957 DOI: 10.4238/2011.october.25.8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Steindachneridion melanodermatum is a large Brazilian catfish, highly prized for sport fishing and for its meat. Specimens of this species, both caught in nature from Iguacu River and F(1) fish born in captivity, were analyzed with regard to patterns of RAPD molecular markers. Genetic similarity ranged from 0.57 to 0.95; two groups were determined for the wild specimens. The results suggest different genetic lineages in sympatry in nature. Heterozygosity and percentage of polymorphic loci were 0.31 and 79% and 0.23 and 62%, respectively, for the two populations of wild specimens and 0.26 and 66%, respectively, for those born in captivity.
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Affiliation(s)
- D A Matoso
- Laboratório de Ecofisiologia e Evolução Molecular, Instituto Nacional de Pesquisas da Amazônia, Manaus, AM, Brasil.
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da Silva M, Matoso DA, Vicari MR, de Almeida MC, Margarido VP, Artoni RF. Repetitive DNA and meiotic behavior of sex chromosomes in Gymnotus pantanal (Gymnotiformes, Gymnotidae). Cytogenet Genome Res 2011; 135:143-9. [PMID: 21860225 DOI: 10.1159/000330777] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/20/2011] [Indexed: 11/19/2022] Open
Abstract
Neotropical fishes have a low rate of chromosome differentiation between sexes. The present study characterizes the first meiotic analysis of sex chromosomes in the order Gymnotiformes. Gymnotus pantanal - females had 40 chromosomes (14m/sm, 26st/a) and males had 39 chromosomes (15m/sm, 24st/a), with a fundamental number of 54 - showed a multiple sexual determination chromosome system of the type X(1)X(1)X(2)X(2)/X(1)X(2)Y. The heterochromatin is restricted to centromeres of all chromosomes of the karyotype. The meiotic behavior of sex chromosomes involved in this system in males is from a trivalent totally pared in the pachytene stage, with a high degree of similarity. The cells of metaphase II exhibit 19 and 20 chromosomes, normal disjunction of sex chromosomes and the formation of balanced gametes with 18 + Y and 18 + X(1)X(2) chromosomes, respectively. The small amount of heterochromatin and repetitive DNA involved in this system and the high degree of chromosome similarity indicated a recent origin of the X(1)X(1)X(2)X(2)/X(1)X(2)Y system in G. pantanal and suggests the existence of a simple ancestral system with morphologically undifferentiated chromosomes.
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Affiliation(s)
- M da Silva
- Programa de Pós-Graduação em Biologia Evolutiva, Universidade Estadual de Ponta Grossa, Ponta Grossa, Brazil
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da Silva M, Matoso DA, Vicari MR, de Almeida MC, Margarido VP, Artoni RF. Physical mapping of 5S rDNA in two species of Knifefishes: Gymnotus pantanal and Gymnotus paraguensis (Gymnotiformes). Cytogenet Genome Res 2011; 134:303-7. [PMID: 21654160 DOI: 10.1159/000328998] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/14/2011] [Indexed: 11/19/2022] Open
Abstract
Physical mapping of 5S rDNA in 2 species of knifefishes, Gymnotuspantanal and G. paraguensis (Gymnotiformes), was performed using fluorescence in situ hybridization with a 5S rDNA probe. The 5S rDNA PCR product from the genomes of both species was also sequenced and aligned to determine non-transcribed spacer sequences (NTS). Both species under study had different patterns of 5S rDNA gene cluster distribution. While in the karyotype of G. pantanal two 5S rDNA-bearing pairs were observed, the karyotype of G. paraguensis possessed as many as 19 such pairs. Such multiplication of 5S rDNA gene clusters might be caused by the involvement of transposable elements because the NTS of G. paraguensis was 400 bp long with high identity (90%) with a mobile transposable element called Tc1-like transposon, described from the cyprinid fish Labeo rohita.
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Affiliation(s)
- M da Silva
- Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Brasil
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Moraes Neto A, Silva MD, Matoso DA, Vicari MR, Almeida MCD, Collares-Pereira MJ, Artoni RF. Karyotype variability in neotropical catfishes of the family Pimelodidae (Teleostei: Siluriformes). Neotrop ichthyol 2011. [DOI: 10.1590/s1679-62252011005000002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Karyotypic data are presented for four species of fish belonging to the Pimelodidae family. These species show a conserved diploid number, 2n = 56 chromosomes, with different karyotypic formulae. The analyzed species showed little amount of heterochromatin located preferentially in the centromeric and telomeric regions of some chromosomes. The nucleolus organizer regions activity (Ag-NORs) and the chromosomal location of ribosomal genes by fluorescent in situ hybridization (FISH), with 18S and 5S probes, showing only one chromosome pair marked bearer of ribosomal genes, the only exception was Pimelodus britskii that presented multiple NORs and syntenic location of the 18S and 5S probes. Non-Robertsonian events, as pericentric inversion and NORs duplication are requested to explain the karyotype diversification in Pseudoplatystoma from the rio Paraguay (MS), Pimelodus from the rio Iguaçu (PR), Sorubim from the rio Paraguay (MS) and Steindachneridion from the rio Paraíba do Sul (SP). The obtained data for the karyotype macrostructure of these species corroborates a conserved pattern observed in Pimelodidae. On the other hand, interspecific variations detected by molecular cytogenetics markers made possible cytotaxonomic inferences and differentiation of the species here analyzed.
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da Silva Cortinhas MC, Glienke C, Prioli AJ, Noleto RB, Matoso DA, Cestari MM. A prime inference on genetic diversity (RAPDs) in the marine fishAtherinella brasiliensis(Teleostei, Atherinopsidae) from Southern Brazil. ACTA ZOOL-STOCKHOLM 2010. [DOI: 10.1111/j.1463-6395.2009.00404.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Matoso DA, Vicari MR, de Almeida MC, Shibatta OA, Moreira-Filho O, Bertollo LAC, Artoni RF. Karyotypic Studies in the Characidae Fish, Genus Astyanax. An Endemic and Highly Isolated Population of Astyanax sp.. CYTOLOGIA 2002. [DOI: 10.1508/cytologia.67.123] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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