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Cunha MS, Fregonezi AR, Fava L, Hilsdorf AWS, Campos LAO, Dergam JA. Phylogeography and Historical Biogeography of the Astyanax bimaculatus Species Complex (Teleostei: Characidae) in Coastal Southeastern South America. Zebrafish 2019; 16:115-127. [DOI: 10.1089/zeb.2018.1668] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Affiliation(s)
- Marina S. Cunha
- Departamento de Biologia Animal, Universidade Federal de Viçosa, Viçosa, Brazil
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Aline R. Fregonezi
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Lucioni Fava
- Departamento de Biologia Animal, Universidade Federal de Viçosa, Viçosa, Brazil
| | | | - Lucio A. O. Campos
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Jorge A. Dergam
- Departamento de Biologia Animal, Universidade Federal de Viçosa, Viçosa, Brazil
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Gavazzoni M, Paiz LM, Oliveira CAM, Pavanelli CS, Graça WJ, Margarido VP. Morphologically Cryptic Species of the Astyanax bimaculatus “Caudal Peduncle Spot” Subgroup Diagnosed Through Cytogenetic Characters. Zebrafish 2018; 15:382-388. [DOI: 10.1089/zeb.2018.1574] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Mariane Gavazzoni
- Centro de Ciências Biológicas e da Saúde, Universidade Estadual do Oeste do Paraná, Cascavel, Paraná, Brazil
- Pós Graduação em Biologia Comparada, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | - Leonardo M. Paiz
- Centro de Ciências Biológicas e da Saúde, Universidade Estadual do Oeste do Paraná, Cascavel, Paraná, Brazil
- Pós Graduação em Biologia Comparada, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | - Carlos A. M. Oliveira
- Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (Nupélia) e Pós Graduação em Ecologia de Ambientes Aquáticos Continentais, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | - Carla S. Pavanelli
- Pós Graduação em Biologia Comparada, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
- Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (Nupélia) e Pós Graduação em Ecologia de Ambientes Aquáticos Continentais, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | - Weferson J. Graça
- Pós Graduação em Biologia Comparada, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
- Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (Nupélia) e Pós Graduação em Ecologia de Ambientes Aquáticos Continentais, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
- Departamento de Biologia, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | - Vladimir P. Margarido
- Centro de Ciências Biológicas e da Saúde, Universidade Estadual do Oeste do Paraná, Cascavel, Paraná, Brazil
- Pós Graduação em Biologia Comparada, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
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Da Silva LL, Dos Santos AR, Giuliano-Caetano L, Dias AL. Chromosomal characterization in two species of an Astyanax bimaculatus complex (Characidae, Characiformes) using different techniques of chromosome banding. Cytotechnology 2016; 68:1277-86. [PMID: 27456346 DOI: 10.1007/s10616-015-9888-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Accepted: 05/13/2015] [Indexed: 10/23/2022] Open
Abstract
Astyanax has been the subject of extensive cytogenetic studies due to its wide karyotypic diversity. This genus comprises species complexes, namely groups of fish of difficult morphological differentiation, such as the bimaculatus complex, which includes the characids with a rounded humeral spot. Thence, the present study proposed to accomplish a cytogenetic characterization of two species of this complex: A. asuncionensis and A. altiparanae, aiming to find chromosomal markers that differentiate these species, as well as achieve a better understanding of the karyotype evolution in the genus. For this we used different techniques of chromosome banding as C-banding, impregnation by silver nitrate, fluorochrome staining and FISH with 18S rDNA probe. This is the first cytogenetic study in A. asuncionensis, from Miranda river, which presented 2n = 50 and 18 m + 22sm + 6st + 4a (FN = 96) and single NORs. The populations of A. altiparanae also presented 2n = 50, but with different karyotypic formulae: the population of the Quexada river presented 16 m + 24sm + 4st + 6a (FN = 94) and the Esperança stream and Jacutinga river showed 16 m + 20sm + 4st + 10a (FN = 90). All analyzed populations showed an interindividual variation in the number and location of the nucleolar organizer regions (NORs). Single and multiple NORs were detected either by impregnation with silver nitrate or by FISH with 18S rDNA probe. After C-banding, the two species differed in relation to the composition and heterochromatin distribution. The meiotic cells of A. altiparanae male individuals were also analyzed, showing that, despite the high karyotype variability, chromosome pairing occurs normally. The data show that A. altiparanae and A. asuncionensis share some characteristics with other species of the bimaculatus complex, suggesting a close phylogenetic relationship among those species. However, some features can be used as differentiation chromosomal markers in altiparanae/asuncionensis morphotypes, which could result from a natural speciation process.
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da Cunha MS, Reis VJC, Dergam JA. Closely Related Syntopic Cytotypes of Astyanax taeniatus (Jenyns, 1842) from the Upper Piranga River, Upper Doce Basin in Southeastern Brazil. Zebrafish 2016; 13:112-7. [DOI: 10.1089/zeb.2015.1163] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Affiliation(s)
- Marina Souza da Cunha
- Laboratório de Sistemática Molecular–Beagle, Departamento de Biologia Animal, Universidade Federal de Viçosa, Viçosa, Minas Gerais State, Brazil
| | - Vinícius José Carvalho Reis
- Laboratório de Sistemática Molecular–Beagle, Departamento de Biologia Animal, Universidade Federal de Viçosa, Viçosa, Minas Gerais State, Brazil
| | - Jorge Abdala Dergam
- Laboratório de Sistemática Molecular–Beagle, Departamento de Biologia Animal, Universidade Federal de Viçosa, Viçosa, Minas Gerais State, Brazil
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Nishiyama PB, Vieira MMR, Porto FE, Borin LA, Portela-Castro ALB, Santos ICM. Karyotypic diversity among three species of the genus Astyanax (Characiformes: Characidae). BRAZ J BIOL 2016; 76:360-6. [PMID: 26934153 DOI: 10.1590/1519-6984.15414] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 02/24/2015] [Indexed: 11/22/2022] Open
Abstract
The group Incertae sedis within the Characidae family currently includes 88 genera, previously included in the subfamily Tetragonopterinae. Among them is the genus Astyanax comprising a group of species with similar morphology and widely distributed in the Neotropics. Thus, the present study aimed to analyze the karyotype diversity in Astyanax species from different watersheds by conventional Giemsa staining, C-banding and fluorescence in situ hybridization (FISH rDNA 18S) probe.specimens of Astyanax aff. paranae belonging to the "scabripinnis complex", Astyanax asunsionensis and Astyanax aff. bimaculatus were analyzed". Two sympatric karyomorphs were observed in Astyanax.aff paranae, one of them having2n=48andthe other one with 2n=50 chromosomes. Other population of this same species also presented 2n=50 chromosomes, but differing in the karyotype formula and with macro supernumerary chromosome found in 100% of the cells in about 80%of females analyzed. Two population of A. asuncionensis and one population of Astyanax. aff. bimaculatus, also showed a diploid number of 50 chromosomes, but also differing in their karyotype formulas. Therefore, A. asuncionensis was also characterized by intraspecific chromosome diversity. The C-banding analysis was able to demonstrate a distinctable to demonstrate a distinct pattern of heterochromatin differing A. asuncionensis from Astyanax aff. paranae and Astyanax aff. bimaculatus. The supernumerary chromosome of Astyanax aff. paranae proved completely heterochromatic. Only Astyanax.aff. bimaculatus multiple showed multiple sites of nucleolar organizing regions. The other species were characterized by having a simple system of NOR. These data contributes to the know ledge of the existing biodiversity in our fish fauna, here highlighted by the inter- and intraspecific chromosomal diversity in the genus Astyanax.
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Affiliation(s)
- P B Nishiyama
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista, BA, Brazil
| | - M M R Vieira
- Unidade Universitária de Coxim, Universidade Estadual do Mato Grosso do Sul, Coxim, MS, Brazil
| | - F E Porto
- Departamento de Biotecnologia, Genética e Biologia Celular, Universidade Estadual de Maringá, Maringá, PR, Brazil
| | - L A Borin
- Departamento de Biotecnologia, Genética e Biologia Celular, Universidade Estadual de Maringá, Maringá, PR, Brazil
| | - A L B Portela-Castro
- Departamento de Biotecnologia, Genética e Biologia Celular, Universidade Estadual de Maringá, Maringá, PR, Brazil
| | - I C M Santos
- Departamento de Biotecnologia, Genética e Biologia Celular, Universidade Estadual de Maringá, Maringá, PR, Brazil
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Paiz LM, Baumgärtner L, da Graça WJ, Margarido VP. Basic cytogenetics and physical mapping of ribosomal genes in four Astyanax species (Characiformes, Characidae) collected in Middle Paraná River, Iguassu National Park: considerations on taxonomy and systematics of the genus. Comp Cytogenet 2015; 9:51-65. [PMID: 25893074 PMCID: PMC4387380 DOI: 10.3897/compcytogen.v9i1.9002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Accepted: 01/14/2015] [Indexed: 06/04/2023]
Abstract
Karyotypes and chromosomal characteristics of both minor and major rDNAs in four fish species known popularly as "lambaris", namely Astyanaxabramis (Jenyns, 1842), Astyanaxasuncionensis Géry, 1972, Astyanaxcorrentinus (Holmberg, 1891) and Astyanax sp. collected from downstream of the Iguassu Falls (Middle Paraná River basin), preservation area of the Iguassu National Park, were analyzed by conventional and molecular protocols. Astyanaxabramis had diploid chromosome number 2n=50 (4m+30sm+8st+8a) and single AgNORs (pair 22), Astyanaxasuncionensis had 2n=50 (8m+24sm+6st+12a) and single AgNORs (pair 20), Astyanax sp. had 2n=50 (4m+26sm+8st+12a) and single AgNORs (pair 25), and Astyanaxcorrentinus had 2n=36 (12m+16sm+2st+6a) and multiple AgNORs (pairs 12, 15, 16, 17). FISH with 18S rDNA showed a single site for Astyanaxabramis, Astyanaxasuncionensis and Astyanax sp. and multiple for Astyanaxcorrentinus (14 sites). FISH with 5S rDNA showed single 5S-bearing loci chromosome pair only for Astyanaxasuncionensis and multiple for Astyanaxabramis (four sites), Astyanaxcorrentinus (five sites) and Astyanax sp. (four sites). Distinct distribution patterns of heterochromatin were observed for karyotypes of all species, with the exception of the first acrocentric chromosome pair characterized by centromeric, interstitial-proximal and telomeric blocks of heterochromatin on the long arm, which may represent homeology between karyotypes of Astyanaxabramis and Astyanaxasuncionensis. Our study showed species-specific characteristics which can serve in diagnosis and differentiation between Astyanaxabramis and Astyanaxasuncionensis, considered cryptic species, as well as strengthening the occurrence of a species of Astyanax not yet described taxonomically. In addition, the data obtained from first cytogenetic studies in Astyanaxcorrentinus suggest a high similarity with Astyanaxschubarti Britski, 1964, suggesting that these species may belong to the same morphological group and that can be phylogenetically related.
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Affiliation(s)
- Leonardo Marcel Paiz
- Universidade Estadual do Oeste do Paraná,,Centro de Ciências Biológicas e da Saúde, CEP: 85819-110, Cascavel, PR, Brazil
| | - Lucas Baumgärtner
- Universidade Estadual de Maringá, Departamento de Biologia Celular e Genética, CEP 87020-900, Maringá, Paraná, Brazil
| | - Weferson Júnio da Graça
- Universidade Estadual de Maringá, Departamento de Biologia, Núcleo de Pesquisas em Limnologia, Ictiologia e Aqüicultura (Nupélia), CEP 87020-900, Maringá, Paraná, Brazil
| | - Vladimir Pavan Margarido
- Universidade Estadual do Oeste do Paraná,,Centro de Ciências Biológicas e da Saúde, CEP: 85819-110, Cascavel, PR, Brazil
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Piscor D, Alves AL, Parise-Maltempi PP. Chromosomal microstructure diversity in three Astyanax (Characiformes, Characidae) species: comparative analysis of the chromosomal locations of the 18S and 5S rDNAs. Zebrafish 2014; 12:81-90. [PMID: 25549064 DOI: 10.1089/zeb.2014.1036] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The species of genus Astyanax is widely distributed in freshwater neotropical zones. Astyanax is considered to be taxonomically confused, similar to other genera placed incertae sedis in Characidae. The cytogenetics of this genus is well characterized; species vary widely in diploid number, from 2n=36 chromosomes in Astyanax schubarti to 2n=50 for most species studied. The size, number, and position of different cytological markers vary among species and populations of Astyanax. We analyzed the karyotypes of individuals from three Astyanax species (Astyanax abramis, Astyanax altiparanae, and Astyanax eigenmanniorum) from populations not previously analyzed. We describe variations in several cytogenetic markers and the karyotypic relationships between them, specifically focusing on the characteristics of the conserved and divergent locations of the ribosomal genes. Our data are useful for establishing relationships between species and for investigating the karyotype evolution within the genus.
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Affiliation(s)
- Diovani Piscor
- 1 Laboratório de Citogenética, Departamento de Biologia, Instituto de Biociências, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP) , Rio Claro, Sao Paulo, Brazil
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