1
|
Balini LC, Fernandes CA, Portela-Castro ALDB, Melo RFD, Zawadzki CH, Borin-Carvalho LA. Initial Steps of XY Sex Chromosome Differentiation in the Armored Catfish Hypostomus albopunctatus (Siluriformes: Loricariidae) Revealed by Heterochromatin Accumulation. Zebrafish 2024; 21:265-273. [PMID: 38386543 DOI: 10.1089/zeb.2023.0100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2024] Open
Abstract
In fish species, heterochromatinization is one process that could trigger sex chromosome differentiation. The present article describes a nascent XX/XY sex chromosome system evidenced by heterochromatin accumulation and microsatellite (GATA)8 in Hypostomus albopunctatus from two populations of the Paraná River basin. The specimens of H. albopunctatus from the Campo and Bossi Rivers share the same karyotype. The species exhibits 74 chromosomes (8m+14sm +16st +36a, fundamental number = 112). The C-banding technique suggests male heterogamety in H. albopunctatus, where the Y-chromosome is morphologically like the X-chromosome but differs from it for having long arms that are entirely heterochromatic. Double fluorescence in situ hybridization (FISH) with 18S and 5S rDNA probes confirmed the Ag-nucleolus organizer region sites in a single pair for both populations, and minor rDNA clusters showed interpopulational variation. FISH with the microsatellite (GATA)8 probe showed a dispersed pattern in the karyotype, accumulating these sequences of sex chromosomes of both populations. FISH with microsatellite (CGC)10 probe showed interpopulational variation. The absence of differentiated sex chromosomes in H. albopunctatus is described previously, and a new variant is documented herein where XY chromosomes can be seen in an early stage of differentiation.
Collapse
Affiliation(s)
- Ligia Carla Balini
- Department of Biotechnology, Genetics, and Cell Biology, State University of Maringá, Maringá, Paraná, Brazil
| | - Carlos Alexandre Fernandes
- Department of Biotechnology, Genetics, and Cell Biology, State University of Maringá, Maringá, Paraná, Brazil
- Limnology, Ichthyology and Aquaculture Research Nucleus (NUPELIA), Biological Sciences Center, State University of Maringá, Maringá, Paraná, Brazil
| | - Ana Luiza de Brito Portela-Castro
- Department of Biotechnology, Genetics, and Cell Biology, State University of Maringá, Maringá, Paraná, Brazil
- Limnology, Ichthyology and Aquaculture Research Nucleus (NUPELIA), Biological Sciences Center, State University of Maringá, Maringá, Paraná, Brazil
| | - Rafael Fernando de Melo
- Department of Biotechnology, Genetics, and Cell Biology, State University of Maringá, Maringá, Paraná, Brazil
| | - Cláudio Henrique Zawadzki
- Limnology, Ichthyology and Aquaculture Research Nucleus (NUPELIA), Biological Sciences Center, State University of Maringá, Maringá, Paraná, Brazil
- Department of Biology, State University of Maringá, Maringá, Paraná, Brazil
| | | |
Collapse
|
2
|
Rubert M, Takagui FH, dos Santos KF, Santana Pompeo LR, da Rosa R, Zawadzki CH, Mariotto S, Baumgärtner L, Moreira-Filho O, Giuliano-Caetano L. Topotype-Based Chromosomal Diversity among Five Species of Freshwater Armored Catfishes in the Hypostomus auroguttatus Supergroup (Actinopterygii: Siluriformes). Zoolog Sci 2022; 39:446-452. [DOI: 10.2108/zs210103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 04/22/2022] [Indexed: 11/17/2022]
Affiliation(s)
- Marceléia Rubert
- Departamento de Genética e Evolução, Universidade Federal de São Carlos, Rodovia Washington Luís, km 235- SP-310, P.O. Box 676, CEP 13565-905, São Carlos, São Paulo, Brazil
| | - Fábio Hiroshi Takagui
- Departamento de Biologia Geral, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, PR 445 Km 380, Campus Universitário, P.O. Box 6001, CEP 86051-970, Londrina, Paraná, Brazil
| | - Kátia Fabiana dos Santos
- Departamento de Biologia Geral, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, PR 445 Km 380, Campus Universitário, P.O. Box 6001, CEP 86051-970, Londrina, Paraná, Brazil
| | - Luis Ricardo Santana Pompeo
- Departamento de Biologia Geral, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, PR 445 Km 380, Campus Universitário, P.O. Box 6001, CEP 86051-970, Londrina, Paraná, Brazil
| | - Renata da Rosa
- Departamento de Biologia Geral, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, PR 445 Km 380, Campus Universitário, P.O. Box 6001, CEP 86051-970, Londrina, Paraná, Brazil
| | - Claudio Henrique Zawadzki
- Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura; Universidade Estadual de Maringá; Av. Colombo 5790, G-90, Sala 18-B, 87020-900 Maringá, Paraná, Brazil
| | - Sandra Mariotto
- Instituto Federal de Educação Ciência e Tecnologia de Mato Grosso (IFMT), Campus Bela Vista. Rua Juliano Costa Marques s/n, Bela Vista, 78050-560 Cuiabá, Mato Grosso, Brazil
| | - Lucas Baumgärtner
- Laboratório de Citogenética; Centro de Ciências Biológicas e da Saúde; Universidade Estadual do Oeste do Paraná. Rua Universitária 2069, Cascavel-Brasil
| | - Orlando Moreira-Filho
- Departamento de Genética e Evolução, Universidade Federal de São Carlos, Rodovia Washington Luís, km 235- SP-310, P.O. Box 676, CEP 13565-905, São Carlos, São Paulo, Brazil
| | - Lucia Giuliano-Caetano
- Departamento de Biologia Geral, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, PR 445 Km 380, Campus Universitário, P.O. Box 6001, CEP 86051-970, Londrina, Paraná, Brazil
| |
Collapse
|
3
|
Cytogenetic Analysis of the Members of the Snake Genera Cylindrophis, Eryx, Python, and Tropidophis. Genes (Basel) 2022; 13:genes13071185. [PMID: 35885968 PMCID: PMC9318745 DOI: 10.3390/genes13071185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 06/25/2022] [Accepted: 06/28/2022] [Indexed: 02/06/2023] Open
Abstract
The recent discovery of two independently evolved XX/XY sex determination systems in the snake genera Python and Boa sparked a new drive to study the evolution of sex chromosomes in poorly studied lineages of snakes, where female heterogamety was previously assumed. Therefore, we examined seven species from the genera Eryx, Cylindrophis, Python, and Tropidophis by conventional and molecular cytogenetic methods. Despite the fact that these species have similar karyotypes in terms of chromosome number and morphology, we detected variability in the distribution of heterochromatin, telomeric repeats, and rDNA loci. Heterochromatic blocks were mainly detected in the centromeric regions in all species, although accumulations were detected in pericentromeric and telomeric regions in a few macrochromosomes in several of the studied species. All species show the expected topology of telomeric repeats at the edge of all chromosomes, with the exception of Eryx muelleri, where additional accumulations were detected in the centromeres of three pairs of macrochromosomes. The rDNA loci accumulate in one pair of microchromosomes in all Eryx species and in Cylindrophis ruffus, in one macrochromosome pair in Tropidophis melanurus and in two pairs of microchromosomes in Python regius. Sex-specific differences were not detected, suggesting that these species likely have homomorphic, poorly differentiated sex chromosomes.
Collapse
|
4
|
Ferreira AMV, Viana PF, Zuanon J, Ezaz T, Cioffi MB, Takagui FH, Feldberg E. Cytogenetic Analysis of Panaqolus tankei Cramer & Sousa, 2016 (Siluriformes, Loricariidae), an Ornamental Fish Endemic to Xingu River, Brazil. Cytogenet Genome Res 2021; 161:187-194. [PMID: 33744896 DOI: 10.1159/000514061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Accepted: 12/23/2020] [Indexed: 11/19/2022] Open
Abstract
Despite conservation of the diploid number, a huge diversity in karyotype formulae is found in the Ancistrini tribe (Loricariidae, Hypostominae). However, the lack of cytogenetic data for many groups impairs a comprehensive understanding of the chromosomal relationships and the impact of chromosomal changes on their evolutionary history. Here, we present for the first time the karyotype of Panaqolus tankei Cramer & Sousa, 2016. We focused on the chromosomal characterization, using conventional and molecular cytogenetic techniques to unravel the evolutionary trends of this tribe. P. tankei, as most species of its sister group Pterygoplichthini, also possessess a conserved diploid number of 52 chromosomes. We observed heterochromatin regions in the centromeres of many chromosomes; pairs 5 and 6 presented interstitial heterochromatin regions, whereas pairs 23 and 24 showed extensive heterochromatin regions in their q arms. In situ localization of 18S rDNA showed hybridization signals correlating with the nucleolus organizer regions, which are located in the q arms of pair 5. However, the 5S rDNA was detected in the centromeric and terminal regions of the q arms of pair 8. (TTAGGG)n hybridized only in the terminal regions of all chromosomes. Microsatellite in situ localization showed divergent patterns, (GA)15 repeated sequences were restricted to the terminal regions of some chromosomes, whereas (AC)15 and (GT)15 showed a scattered hybridization pattern throughout the genome. Intraspecific comparative genomic hybridization was performed on the chromosomes of P. tankei to verify the existence of sex-specific regions. The results revealed only a limited number of overlapping hybridization signals, coinciding with the heterochromatin in centromeric regions without any sex-specific signals in both males and females. Our study provides a karyotype description of P. tankei, highlighting extensive differences in the karyotype formula, the heterochromatin regions, and sites of 5S and 18S rDNA, as compared with data available for the genus.
Collapse
Affiliation(s)
- Alex M V Ferreira
- Laboratório de Genética Animal, Instituto Nacional de Pesquisas da Amazônia, Coordenação de Biodiversidade, Manaus, Brazil,
| | - Patrik F Viana
- Laboratório de Genética Animal, Instituto Nacional de Pesquisas da Amazônia, Coordenação de Biodiversidade, Manaus, Brazil
| | - Jansen Zuanon
- Instituto Nacional de Pesquisas da Amazônia, Coordenação de Biodiversidade, Manaus, Brazil
| | - Tariq Ezaz
- Institute for Applied Ecology, Faculty of Science and Technology, University of Canberra, Canberra, Australian Capital Territory, Australia
| | - Marcelo B Cioffi
- Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos, Brazil
| | - Fábio H Takagui
- Departamento de Biologia Geral, Universidade Estadual de Londrina, Londrina, Brazil
| | - Eliana Feldberg
- Laboratório de Genética Animal, Instituto Nacional de Pesquisas da Amazônia, Coordenação de Biodiversidade, Manaus, Brazil
| |
Collapse
|
5
|
de Oliveira LC, Ribeiro MO, Costa GDM, Zawadzki CH, Prizon-Nakajima AC, Borin-Carvalho LA, Martins-Santos IC, Portela-Castro ALDB. Cytogenetic characterization of Hypostomus soniae Hollanda-Carvalho & Weber, 2004 from the Teles Pires River, southern Amazon basin: evidence of an early stage of an XX/XY sex chromosome system. COMPARATIVE CYTOGENETICS 2019; 13:411-422. [PMID: 31867090 PMCID: PMC6920219 DOI: 10.3897/compcytogen.v13i4.36205] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 11/11/2019] [Indexed: 05/27/2023]
Abstract
In the present study, we analyzed individuals of Hypostomus soniae (Loricariidae) collected from the Teles Pires River, southern Amazon basin, Brazil. Hypostomus soniae has a diploid chromosome number of 2n = 64 and a karyotype composed of 12 metacentric (m), 22 submetacentric (sm), 14 subtelocentric (st), and 16 acrocentric (a) chromosomes, with a structural difference between the chromosomes of the two sexes: the presence of a block of heterochromatin in sm pair No. 26, which appears to represent a putative initial stage of the differentiation of an XX/XY sex chromosome system. This chromosome, which had a heterochromatin block, and was designated proto-Y (pY), varied in the length of the long arm (q) in comparison with its homolog, resulting from the addition of constitutive heterochromatin. It is further distinguished by the presence of major ribosomal cistrons in a subterminal position of the long arm (q). The Nucleolus Organizer Region (NOR) had different phenotypes among the H. soniae individuals in terms of the number of Ag-NORs and 18S rDNA sites. The origin, distribution and maintenance of the chromosomal polymorphism found in H. soniae reinforced the hypothesis of the existence of a proto-Y chromosome, demonstrating the rise of an XX/XY sex chromosome system.
Collapse
Affiliation(s)
- Luciene Castuera de Oliveira
- Faculdade de Ciências Biológicas e Agrárias, Universidade do Estado de Mato Grosso, Alta Floresta, Mato Grosso, Brazil
| | - Marcos Otávio Ribeiro
- Departamento de Biotecnologia, Genética e Biologia Celular, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | - Gerlane de Medeiros Costa
- Faculdade de Ciências Biológicas e Agrárias, Universidade do Estado de Mato Grosso, Alta Floresta, Mato Grosso, Brazil
| | | | - Ana Camila Prizon-Nakajima
- Departamento de Biotecnologia, Genética e Biologia Celular, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | | | | | | |
Collapse
|