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Tura V, Kretschmer R, Sassi FDMC, de Moraes RLR, Barcellos SA, de Rosso VO, de Souza MS, Cioffi MDB, Gunski RJ, Garnero ADV. Chromosomal Evolution of Suboscines: Karyotype Diversity and Evolutionary Trends in Ovenbirds (Passeriformes, Furnariidae). Cytogenet Genome Res 2023; 162:644-656. [PMID: 36996794 DOI: 10.1159/000530428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 03/28/2023] [Indexed: 04/01/2023] Open
Abstract
Furnariidae (ovenbirds) is one of the most diversified families in the Passeriformes order and Suboscines suborder. Despite the great diversity of species, cytogenetic research is still in its early stages, restricting our knowledge of their karyotype evolution. We combined traditional and molecular cytogenetic analyses in three representative species, Synallaxis frontalis, Syndactyla rufosuperciliata, and Cranioleuca obsoleta, to examine the chromosomal structure and evolution of ovenbirds. Our findings revealed that all the species studied had the same diploid number (2n = 82). Differences in chromosomal morphology of some macrochromosomes indicate the presence of intrachromosomal rearrangements. Although the three species only had the 18S rDNA on one microchromosome pair, chromosomal mapping of six simple short repeats revealed a varied pattern of chromosome distribution among them, suggesting that each species underwent different repetitive DNA accumulation upon their divergence. The interspecific comparative genomic hybridization experiment revealed that the Furnariidae species investigated carry centromeric regions enriched in similar repetitive sequences, bolstering the Furnariidae family's karyotype conservation. Nonetheless, the outgroup species Turdus rufiventris (Turdidae) demonstrated an advanced stage of sequence divergence with hybridization signals that were almost entirely limited to a few microchromosomes. Overall, the findings imply that Furnariidae species have a high degree of chromosomal conservation, and we could also observe a differentiation of repetitive sequences in both Passeriformes suborders (Suboscines and Oscines).
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Affiliation(s)
- Victoria Tura
- Laboratório de Diversidade Genética Animal, Universidade Federal do Pampa, São Gabriel, Brazil
| | - Rafael Kretschmer
- Departamento de Ecologia, Zoologia e Genética, Instituto de Biologia, Universidade Federal de Pelotas, Pelotas, Brazil
| | | | | | - Suziane Alves Barcellos
- Laboratório de Diversidade Genética Animal, Universidade Federal do Pampa, São Gabriel, Brazil
| | - Vitor Oliveira de Rosso
- Laboratório de Diversidade Genética Animal, Universidade Federal do Pampa, São Gabriel, Brazil
| | - Marcelo Santos de Souza
- Laboratório de Diversidade Genética Animal, Universidade Federal do Pampa, São Gabriel, Brazil
| | | | - Ricardo J Gunski
- Laboratório de Diversidade Genética Animal, Universidade Federal do Pampa, São Gabriel, Brazil
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2
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de Moraes RLR, Sassi FDMC, Marinho MMF, Ráb P, Porto JIR, Feldberg E, Cioffi MDB. Small Body, Large Chromosomes: Centric Fusions Shaped the Karyotype of the Amazonian Miniature Fish Nannostomus anduzei (Characiformes, Lebiasinidae). Genes (Basel) 2023; 14:192. [PMID: 36672933 PMCID: PMC9858914 DOI: 10.3390/genes14010192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 01/04/2023] [Accepted: 01/10/2023] [Indexed: 01/13/2023] Open
Abstract
Miniature refers to species with extraordinarily small adult body size when adult and can be found within all major metazoan groups. It is considered that miniature species have experienced severe alteration of numerous morphological traits during evolution. For a variety of reasons, including severe labor concerns during collecting, chromosomal acquisition, and taxonomic issues, miniature fishes are neglected and understudied. Since some available studies indicate possible relationship between diploid chromosome number (2n) and body size in fishes, we aimed to study one of the smallest Neotropical fish Nannostomus anduzei (Teleostei, Characiformes, Lebiasinidae), using both conventional (Giemsa staining, C-banding) and molecular cytogenetic methods (FISH mapping of rDNAs, microsatellites, and telomeric sequences). Our research revealed that N. anduzei possesses one of the lowest diploid chromosome numbers (2n = 22) among teleost fishes, and its karyotype is entirely composed of large metacentric chromosomes. All chromosomes, except for pair number 11, showed an 18S rDNA signal in the pericentromeric region. 5S rDNA signals were detected in the pericentromeric regions of chromosome pair number 1 and 6, displaying synteny to 18S rDNA signals. Interstitial telomeric sites (ITS) were identified in the centromeric region of pairs 6 and 8, indicating that centric fusions played a significant role in karyotype evolution of studied species. Our study provides further evidence supporting the trend of diploid chromosome number reduction along with miniaturization of adult body size in fishes.
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Affiliation(s)
- Renata Luiza Rosa de Moraes
- Departamento de Genética e Evolução, Universidade Federal de São Carlos (UFSCar), Rodovia Washington Luiz Km. 235, C.P. 676, São Carlos 13565-905, SP, Brazil
| | - Francisco de Menezes Cavalcante Sassi
- Departamento de Genética e Evolução, Universidade Federal de São Carlos (UFSCar), Rodovia Washington Luiz Km. 235, C.P. 676, São Carlos 13565-905, SP, Brazil
| | - Manoela Maria Ferreira Marinho
- Departamento de Sistemática e Ecologia, Universidade Federal da Paraíba, Cidade Universitária, Castelo Branco, João Pessoa 58051-900, PB, Brazil
| | - Petr Ráb
- Laboratory of Fish Genetics, Institute of Animal Physiology and Genetics, Czech Academy of Sciences, Rumburská 89, 277 21 Liběchov, Czech Republic
| | - Jorge Ivan Rebelo Porto
- Laboratório de Genética Animal, Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia, Av. André Araújo 2936, Petrópolis, Manaus 69067-375, AM, Brazil
| | - Eliana Feldberg
- Laboratório de Genética Animal, Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia, Av. André Araújo 2936, Petrópolis, Manaus 69067-375, AM, Brazil
| | - Marcelo de Bello Cioffi
- Departamento de Genética e Evolução, Universidade Federal de São Carlos (UFSCar), Rodovia Washington Luiz Km. 235, C.P. 676, São Carlos 13565-905, SP, Brazil
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3
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Gaffaroğlu M, Karasu-Ayata M, Unal-Karakus S. Karyomorphology of Two Cyprinid Barbels (Teleostei: Cyprinidae) from Gediz River, Turkey. CYTOL GENET+ 2022. [DOI: 10.3103/s0095452722060032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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4
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Cordeiro JG, Rodrigues J, dos Santos R, da Silva Rodrigues M, Nóbrega RH, da Silva Siqueira FF, Maximino C, de Siqueira‐Silva DH. Reproductive biology of the Amazonian amphibian fish the splash tetra
Copella arnoldi
with emphasis to histological characterization. ACTA ZOOL-STOCKHOLM 2022. [DOI: 10.1111/azo.12430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jhennifer Gomes Cordeiro
- Research Group on the Reproduction of Amazon fish (GERPA/LANEC), Biology Faculty (FACBIO) University of South and Southern of Pará (Unifesspa) Marabá Brazil
| | - Jeane Rodrigues
- Research Group on the Reproduction of Amazon fish (GERPA/LANEC), Biology Faculty (FACBIO) University of South and Southern of Pará (Unifesspa) Marabá Brazil
| | - Raquel dos Santos
- Research Group on the Reproduction of Amazon fish (GERPA/LANEC), Biology Faculty (FACBIO) University of South and Southern of Pará (Unifesspa) Marabá Brazil
| | - Maira da Silva Rodrigues
- Reproductive and Molecular Biology Group, Department of Morphology, Institute of Biosciences São Paulo State University (UNESP) – Botucatu Botucatu Brazil
| | - Rafael Henrique Nóbrega
- Reproductive and Molecular Biology Group, Department of Morphology, Institute of Biosciences São Paulo State University (UNESP) – Botucatu Botucatu Brazil
| | | | - Caio Maximino
- Laboratório de Neurociências e Comportamento “Frederico Guilherme Graeff” Universidade Federal do Sul e Sudeste do Pará Marabá Brazil
| | - Diógenes Henrique de Siqueira‐Silva
- Research Group on the Reproduction of Amazon fish (GERPA/LANEC), Biology Faculty (FACBIO) University of South and Southern of Pará (Unifesspa) Marabá Brazil
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Simanovsky SA, Medvedev DA, Tefera F, Golubtsov AS. First cytogenetic data on Afrotropical lutefishes (Citharinidae) in the light of karyotype evolution in Characiformes. COMPARATIVE CYTOGENETICS 2022; 16:143-150. [PMID: 36761810 PMCID: PMC9849050 DOI: 10.3897/compcytogen.v16.i2.79133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 05/17/2022] [Indexed: 06/18/2023]
Abstract
The Afrotropical lutefish family Citharinidae (Citharinoidei, Characiformes) comprises three genera with eight species in total. Although Citharinidae have been studied in terms of taxonomy and systematics, no cytogenetic information was available for any representative of the family. Furthermore, only one species out of 116 in Citharinoidei (Distichodusaffinis Günther, 1873) has been studied cytogenetically. Here, we report the karyotypes of Citharinuscitharus (Geoffroy St. Hilaire, 1809) from West Africa and Citharinuslatus Müller et Troschel, 1844 from Northeast Africa. The former has the diploid chromosome number 2n = 40 and the fundamental number FN = 80, while the latter has 2n = 44 and FN = 88. Hence, these karyotypes consist exclusively of bi-armed chromosomes. Such karyotypes were previously found in D.affinis and in many lineages of Neotropical species of another suborder of Characiformes, Characoidei. In contrast, the karyotypes dominated by uni-armed elements are typical for a number of phylogenetically basal lineages of Afrotropical and Neotropical Characoidei. We discuss the importance of our data on Citharinidae for the understanding of the karyotype evolution within the order Characiformes.
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Affiliation(s)
- Sergey A. Simanovsky
- Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, 33 Leninskij prosp., 119071 Moscow, RussiaSevertsov Institute of Ecology and Evolution, Russian Academy of SciencesMoscowRussia
| | - Dmitry A. Medvedev
- Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, 33 Leninskij prosp., 119071 Moscow, RussiaSevertsov Institute of Ecology and Evolution, Russian Academy of SciencesMoscowRussia
| | - Fekadu Tefera
- National Fishery and Aquatic Life Research Center, Ethiopian Institute of Agricultural Research, P.O. Box 64, Sebeta, EthiopiaNational Fishery and Aquatic Life Research Center, Ethiopian Institute of Agricultural ResearchSebetaEthiopia
| | - Alexander S. Golubtsov
- Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, 33 Leninskij prosp., 119071 Moscow, RussiaSevertsov Institute of Ecology and Evolution, Russian Academy of SciencesMoscowRussia
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6
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Leite PPDM, Sassi FDMC, Marinho MMF, Nirchio M, Moraes RLRD, Toma GA, Bertollo LAC, Cioffi MDB. Tracking the evolutionary pathways among Brazilian Lebiasina species (Teleostei: Lebiasinidae): a chromosomal and genomic comparative investigation. NEOTROPICAL ICHTHYOLOGY 2022. [DOI: 10.1590/1982-0224-2021-0153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract Despite several difficulties in chromosomal analyses of small-sized fishes, the cytogenetics of the Lebiasinidae was largely improved in the last years, showing differential patterns in the chromosomal evolution inside the family. In this context, it has been shown that genus Lebiasina preserves its karyotypic macrostructure, composed of 2n = 36 chromosomes, whereas the other genera generally present higher 2n. This study focused on the comparative cytogenetics of three Lebiasina species, one of them analyzed here for the first time, using conventional and molecular procedures. The results reinforced the differentiated evolutionary path of the genus Lebiasina while, at the same time, highlighted the genomic particularities that have accompanied the evolution of each species. In this sense, the repetitive components of the genome played a significant role in the differentiation of each species. It is also notable that L. minuta and L. melanoguttata, the two species that occur exclusively in the Brazilian territory, show greater chromosomal similarities to each other than to the trans-Andean sister species, L. bimaculata.
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7
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de Moraes RLR, Sassi FDMC, Bertollo LAC, Marinho MMF, Viana PF, Feldberg E, Oliveira VCS, Deon GA, Al-Rikabi ABH, Liehr T, Cioffi MDB. Tracking the Evolutionary Trends Among Small-Size Fishes of the Genus Pyrrhulina (Characiforme, Lebiasinidae): New Insights From a Molecular Cytogenetic Perspective. Front Genet 2021; 12:769984. [PMID: 34691160 PMCID: PMC8526856 DOI: 10.3389/fgene.2021.769984] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 09/22/2021] [Indexed: 11/13/2022] Open
Abstract
Miniature fishes have always been a challenge for cytogenetic studies due to the difficulty in obtaining chromosomal preparations, making them virtually unexplored. An example of this scenario relies on members of the family Lebiasinidae which include miniature to medium-sized, poorly known species, until very recently. The present study is part of undergoing major cytogenetic advances seeking to elucidate the evolutionary history of lebiasinids. Aiming to examine the karyotype diversification more deeply in Pyrrhulina, here we combined classical and molecular cytogenetic analyses, including Giemsa staining, C-banding, repetitive DNA mapping, comparative genomic hybridization (CGH), and whole chromosome painting (WCP) to perform the first analyses in five Pyrrhulina species (Pyrrhulina aff. marilynae, Pyrrhulina sp., P. obermulleri, P. marilynae and Pyrrhulina cf. laeta). The diploid number (2n) ranged from 40 to 42 chromosomes among all analyzed species, but P. marilynae is strikingly differentiated by having 2n = 32 chromosomes and a karyotype composed of large meta/submetacentric chromosomes, whose plesiomorphic status is discussed. The distribution of microsatellites does not markedly differ among species, but the number and position of the rDNA sites underwent significant changes among them. Interspecific comparative genome hybridization (CGH) found a moderate divergence in the repetitive DNA content among the species’ genomes. Noteworthy, the WCP reinforced our previous hypothesis on the origin of the X1X2Y multiple sex chromosome system in P. semifasciata. In summary, our data suggest that the karyotype differentiation in Pyrrhulina has been driven by major structural rearrangements, accompanied by high dynamics of repetitive DNAs.
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Affiliation(s)
- Renata Luiza Rosa de Moraes
- Laboratorio de Citogenética de Peixes, Departamento de Genética e Evolução, Universidade Federal de São Carlos (UFSCar), São Carlos, Brazil
| | | | - Luiz Antonio Carlos Bertollo
- Laboratorio de Citogenética de Peixes, Departamento de Genética e Evolução, Universidade Federal de São Carlos (UFSCar), São Carlos, Brazil
| | - Manoela Maria Ferreira Marinho
- Museu de Zoologia da Universidade de São Paulo (MZUSP), São Paulo, Brazil.,Laboratório de Sistemática e Morfologia de Peixes, Departamento de Sistemática e Ecologia (DSE), Universidade Federal da Paraíba (UFPB), João Pessoa, Brazil
| | - Patrik Ferreira Viana
- Laboratório de Gentética Animal, Instituto Nacional de Pesquisa da Amazônia, Coordenação de Biodiversidade, Manaus, Brazil
| | - Eliana Feldberg
- Laboratório de Gentética Animal, Instituto Nacional de Pesquisa da Amazônia, Coordenação de Biodiversidade, Manaus, Brazil
| | - Vanessa Cristina Sales Oliveira
- Laboratorio de Citogenética de Peixes, Departamento de Genética e Evolução, Universidade Federal de São Carlos (UFSCar), São Carlos, Brazil
| | - Geize Aparecida Deon
- Laboratorio de Citogenética de Peixes, Departamento de Genética e Evolução, Universidade Federal de São Carlos (UFSCar), São Carlos, Brazil.,Laboratório de Biologia Cromossômica, Estrutura e Função, Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Ponta Grossa, Brazil
| | | | - Thomas Liehr
- Institute of Human Genetics, University Hospital Jena, Jena, Germany
| | - Marcelo de Bello Cioffi
- Laboratorio de Citogenética de Peixes, Departamento de Genética e Evolução, Universidade Federal de São Carlos (UFSCar), São Carlos, Brazil
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8
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Chromosome-Centric View of Genome Organization and Evolution. Genes (Basel) 2021; 12:genes12081237. [PMID: 34440411 PMCID: PMC8391126 DOI: 10.3390/genes12081237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 08/05/2021] [Indexed: 11/17/2022] Open
Abstract
Genetic material in all cellular organisms is packed into chromosomes, which represent essential units of inheritance, recombination, and evolution [...].
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9
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High Genetic Diversity despite Conserved Karyotype Organization in the Giant Trahiras from Genus Hoplias (Characiformes, Erythrinidae). Genes (Basel) 2021; 12:genes12020252. [PMID: 33578790 PMCID: PMC7916553 DOI: 10.3390/genes12020252] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 02/05/2021] [Accepted: 02/05/2021] [Indexed: 11/17/2022] Open
Abstract
In the fish genus Hoplias, two major general groups can be found, one of which is formed by the “common trahiras” (Hoplias malabaricus group) and the other by the “giant trahiras” (Hoplias lacerdae group, in addition to Hoplias aimara), which usually comprises specimens of larger body size. Previous investigations from the giant trahiras group recovered 2n = 50 meta/submetacentric chromosomes and no sex chromosome differentiation, indicating a probable conservative pattern for their karyotype organization. Here, we conducted comparative cytogenetic studies in six giant trahiras species, two of them for the first time. We employed standard and advanced molecular cytogenetics procedures, including comparative genomic hybridization (CGH), as well as genomic assessments of diversity levels and phylogenetic relationships among them. The results strongly suggest that the giant trahiras have a particular and differentiated evolutionary pathway inside the Hoplias genus. While these species share the same 2n and karyotypes, their congeneric species of the H. malabaricus group show a notable chromosomal diversity in number, morphology, and sex chromosome systems. However, at the same time, significant changes were characterized at their inner chromosomal level, as well as in their genetic diversity, highlighting their current relationships resulting from different evolutionary histories.
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10
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Viana PF, Ezaz T, Cioffi MDB, Liehr T, Al-Rikabi A, Tavares-Pinheiro R, Bertollo LAC, Feldberg E. Revisiting the Karyotype Evolution of Neotropical Boid Snakes: A Puzzle Mediated by Chromosomal Fissions. Cells 2020; 9:cells9102268. [PMID: 33050432 PMCID: PMC7601083 DOI: 10.3390/cells9102268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 09/28/2020] [Accepted: 10/09/2020] [Indexed: 11/16/2022] Open
Abstract
The Boidae family is an ancient group of snakes widely distributed across the Neotropical region, where several biogeographic events contributed towards shaping their evolution and diversification. Most species of this family have a diploid number composed of 2n = 36; however, among Booidea families, the Boidae stands out by presenting the greatest chromosomal diversity, with 2n ranging between 36 and 44 chromosomes and an undifferentiated XY sex chromosome system. Here, we applied a comparative chromosome analysis using cross-species chromosome paintings in five species representing four Boidae genera, to decipher the evolutionary dynamics of some chromosomes in these Neotropical snakes. Our study included all diploid numbers (2n = 36, 40, and 44) known for this family and our comparative chromosomal mappings point to a strong evolutionary relationship among the genera Boa, Corallus, Eunectes, and Epicrates. The results also allowed us to propose the cytogenomic diversification that had occurred in this family: a process mediated by centric fissions, including fission events of the putative and undifferentiated XY sex chromosome system in the 2n = 44 karyotype, which is critical in solving the puzzle of the karyotype evolution of boid snakes.
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Affiliation(s)
- Patrik F. Viana
- Laboratory of Animal Genetics, Instituto Nacional de Pesquisas da Amazônia, Coordenação de Biodiversidade, Av. André Araújo 2936, Petrópolis, Manaus 69067-375, AM, Brazil; (P.F.V.); (E.F.)
| | - Tariq Ezaz
- Institute for Applied Ecology, Faculty of Science and Technology, University of Canberra, Canberra 12 2616, ACT, Australia;
| | - Marcelo de Bello Cioffi
- Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos 13565-090, SP, Brazil; (M.d.B.C.); (L.A.C.B.)
| | - Thomas Liehr
- Institute of Human Genetics, University Hospital Jena, Am Klinikum 1, 07747 Jena, Germany;
- Correspondence: ; Tel.: +49-3641-9396850
| | - Ahmed Al-Rikabi
- Institute of Human Genetics, University Hospital Jena, Am Klinikum 1, 07747 Jena, Germany;
| | - Rodrigo Tavares-Pinheiro
- Departamento de Ciências Biológicas e da Saúde, Laboratório de Herpetologia, Universidade Federal do Amapá, Macapá 68903-419, AP, Brazil;
| | - Luiz Antônio Carlos Bertollo
- Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos 13565-090, SP, Brazil; (M.d.B.C.); (L.A.C.B.)
| | - Eliana Feldberg
- Laboratory of Animal Genetics, Instituto Nacional de Pesquisas da Amazônia, Coordenação de Biodiversidade, Av. André Araújo 2936, Petrópolis, Manaus 69067-375, AM, Brazil; (P.F.V.); (E.F.)
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11
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Sassi FDMC, Deon GA, Moreira-Filho O, Vicari MR, Bertollo LAC, Liehr T, de Oliveira EA, Cioffi MB. Multiple Sex Chromosomes and Evolutionary Relationships in Amazonian Catfishes: The Outstanding Model of the Genus Harttia (Siluriformes: Loricariidae). Genes (Basel) 2020; 11:genes11101179. [PMID: 33050411 PMCID: PMC7600804 DOI: 10.3390/genes11101179] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/06/2020] [Accepted: 10/08/2020] [Indexed: 02/06/2023] Open
Abstract
The armored Harttia catfishes present great species diversity and remarkable cytogenetic variation, including different sex chromosome systems. Here we analyzed three new species, H. duriventris, H. villasboas and H. rondoni, using both conventional and molecular cytogenetic techniques (Giemsa-staining and C-banding), including the mapping of repetitive DNAs using fluorescence in situ hybridization (FISH) and comparative genomic hybridization (CGH) experiments. Both H. duriventris and H. villasboas have 2n = ♀56/♂55 chromosomes, and an X1X1X2X2 /X1X2Y sex chromosome system, while a proto or neo-XY system is proposed for H. rondoni (2n = 54♀♂). Single motifs of 5S and 18S rDNA occur in all three species, with the latter being also mapped in the sex chromosomes. The results confirm the general evolutionary trend that has been noticed for the genus: an extensive variation on their chromosome number, single sites of rDNA sequences and the occurrence of multiple sex chromosomes. Comparative genomic analyses with another congeneric species, H. punctata, reveal that the X1X2Y sex chromosomes of these species share the genomic contents, indicating a probable common origin. The remarkable karyotypic variation, including sex chromosomes systems, makes Harttia a suitable model for evolutionary studies focusing on karyotype differentiation and sex chromosome evolution among lower vertebrates.
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Affiliation(s)
- Francisco de M. C. Sassi
- Laboratório de Citogenética de Peixes, Departamento de Genética e Evolução, Universidade Federal de São, Carlos, São Carlos, SP 13565-905, Brazil; (F.d.M.C.S.); (G.A.D.); (O.M.-F.); (L.A.C.B.); (M.B.C.)
| | - Geize A. Deon
- Laboratório de Citogenética de Peixes, Departamento de Genética e Evolução, Universidade Federal de São, Carlos, São Carlos, SP 13565-905, Brazil; (F.d.M.C.S.); (G.A.D.); (O.M.-F.); (L.A.C.B.); (M.B.C.)
- Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Ponta Grossa, PR 84010-330, Brazil;
| | - Orlando Moreira-Filho
- Laboratório de Citogenética de Peixes, Departamento de Genética e Evolução, Universidade Federal de São, Carlos, São Carlos, SP 13565-905, Brazil; (F.d.M.C.S.); (G.A.D.); (O.M.-F.); (L.A.C.B.); (M.B.C.)
- Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Ponta Grossa, PR 84010-330, Brazil;
| | - Marcelo R. Vicari
- Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Ponta Grossa, PR 84010-330, Brazil;
| | - Luiz A. C. Bertollo
- Laboratório de Citogenética de Peixes, Departamento de Genética e Evolução, Universidade Federal de São, Carlos, São Carlos, SP 13565-905, Brazil; (F.d.M.C.S.); (G.A.D.); (O.M.-F.); (L.A.C.B.); (M.B.C.)
| | - Thomas Liehr
- Institute of Human Genetics, University Hospital Jena, Jena 07747, Germany
- Correspondence: ; Tel.: +49-3641-9396850; Fax: +49-3641-9396852
| | | | - Marcelo B. Cioffi
- Laboratório de Citogenética de Peixes, Departamento de Genética e Evolução, Universidade Federal de São, Carlos, São Carlos, SP 13565-905, Brazil; (F.d.M.C.S.); (G.A.D.); (O.M.-F.); (L.A.C.B.); (M.B.C.)
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12
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The Amazonian Red Side-Necked Turtle Rhinemys rufipes (Spix, 1824) (Testudines, Chelidae) Has a GSD Sex-Determining Mechanism with an Ancient XY Sex Microchromosome System. Cells 2020; 9:cells9092088. [PMID: 32932633 PMCID: PMC7563702 DOI: 10.3390/cells9092088] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/08/2020] [Accepted: 09/11/2020] [Indexed: 02/06/2023] Open
Abstract
The Amazonian red side-necked turtle Rhynemis rufipes is an endemic Amazonian Chelidae species that occurs in small streams throughout Colombia and Brazil river basins. Little is known about various biological aspects of this species, including its sex determination strategies. Among chelids, the greatest karyotype diversity is found in the Neotropical species, with several 2n configurations, including cases of triploidy. Here, we investigate the karyotype of Rhinemys rufipes by applying combined conventional and molecular cytogenetic procedures. This allowed us to discover a genetic sex-determining mechanism that shares an ancestral micro XY sex chromosome system. This ancient micro XY system recruited distinct repeat motifs before it diverged from several South America and Australasian species. We propose that such a system dates back to the earliest lineages of the chelid species before the split of South America and Australasian lineages.
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