1
|
Takagui FH, Baumgärtner L, Viana P, Lima MCC, Bitencourt JDA, Venere PC, Lui RL, Moreira-Filho O, Feldberg E, Almeida Simões F, Birindelli JL, Giuliano-Caetano L. Karyotype Evolution of Talking Thorny Catfishes Anadoras (Doradidae, Astrodoradinae): A Process Mediated by Structural Rearrangements and Intense Reorganization of Repetitive DNAs. Cytogenet Genome Res 2022; 162:64-75. [PMID: 35500552 DOI: 10.1159/000523747] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 02/17/2022] [Indexed: 11/19/2022] Open
Abstract
Anadoras is a thorny catfish genus widespread through the Amazon and Paraguay river basins. It includes 2 nominal species, A. grypus and A. weddellii, plus Anadoras sp. "araguaia," an undescribed species only recognized morphologically. Since Anadoras occupies a basal position within the Astrodoradinae phylogeny, it is crucial to identify its cytogenetic features to comprehend the mechanisms involved in the chromosomal diversification of this subfamily. Therefore, we performed a comparative cytogenetic analysis including all species of Anadoras. Furthermore, we applied a species delimitation analysis based on 600 bp of the mitochondrial cytochrome oxidase subunit 1 (CO1) gene to investigate the taxonomic status of the species. Cytogenetic markers revealed a high degree of similarity among Anadoras weddellii and Anadoras sp. "araguaia," both have 2n = 56 chromosomes (24m + 10sm + 22st/a), single NOR sites on acrocentric pair 28, and 5S rDNA sites on submetacentric pair 15. A. grypus has the most divergent chromosomal characteristics because, even though it also has 2n = 56 chromosomes, it exhibits several differences in the chromosome formula, heterochromatin distribution, and number/position of the rDNA sites. In sum, we believe that the chromosome diversification of Anadoras is due to 4 mechanisms: centric fusion, pericentric/paracentric inversions, nonreciprocal translocations, and activity of transposable elements. Additionally, our phylogenetic tree revealed well-supported clades and, by barcode species delimitation analysis, confirmed the existence of 3 molecular operational taxonomic units, including the putative new species Anadoras sp. "araguaia."
Collapse
Affiliation(s)
- Fábio Hiroshi Takagui
- Laboratory of Animal Cytogenetics, Department of General Biology, CCB, State University of Londrina, Londrina, Brazil
| | - Lucas Baumgärtner
- Cytogenetic Laboratory, Center of Biological and Health Sciences, State University of Western Paraná, Cascavel, Brazil
| | - Patrik Viana
- Laboratory of Animal Genetics, National Institute of Amazonian Research, Manaus, Brazil
| | - Moema C C Lima
- Laboratory of Genetics and Animal Ecology, Department of General Biology, CCB, State University of Londrina, Londrina, Brazil
| | - Jamille de A Bitencourt
- Cytogenetic Laboratory, Department of Biological Sciences, State University of Southwest of Bahia, Jequié, Brazil
| | - Paulo Cesar Venere
- Laboratory of Animal Cytogenetics and Genetics, Federal University of Mato Grosso, Cuiabá, Brazil
| | - Roberto Laridondo Lui
- Cytogenetic Laboratory, Center of Biological and Health Sciences, State University of Western Paraná, Cascavel, Brazil
| | - Orlando Moreira-Filho
- Laboratory of Molecular Biodiversity and Conservation, Department of Genetics and Evolution, Federal University of São Carlos, São Carlos, Brazil
| | - Eliana Feldberg
- Laboratory of Animal Genetics, National Institute of Amazonian Research, Manaus, Brazil
| | - Fernanda Almeida Simões
- Laboratory of Genetics and Animal Ecology, Department of General Biology, CCB, State University of Londrina, Londrina, Brazil
| | - José Luis Birindelli
- Museum of Zoology, Department of Animal and Plant Biology, CCB, Londrina State University, Londrina, Brazil
| | - Lucia Giuliano-Caetano
- Laboratory of Animal Cytogenetics, Department of General Biology, CCB, State University of Londrina, Londrina, Brazil
| |
Collapse
|
2
|
de Sousa RF, Venere PC, Faria KDC. Comparative cytogenetics of two species of Dermanura (Chiroptera, Phyllostomidae) in Midwestern Brazil. Comp Cytogenet 2021; 15:89-99. [PMID: 33868592 PMCID: PMC8035126 DOI: 10.3897/compcytogen.v15i2.60577] [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] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 02/23/2021] [Indexed: 06/12/2023]
Abstract
Dermanura Gervais, 1856 is represented by small frugivorous bats of the Stenodermatinae subfamily. The taxonomy of this group presents controversies and has been subject to changes, especially since the morphological characters evaluated have left gaps that are difficult to fill regarding good species characterization. Previous studies performed in Dermanura cinerea Gervais, 1856 found that the karyotype of this species has a diploid number of chromosomes equal to 30 and 56 autosomal arms. The objective of the present study was to describe, for the first time, the karyotypes of the species Dermanura anderseni (Osgood, 1916) and Dermanura gnoma (Handley, 1987) based on classical cytogenetic markers. For both species, the diploid number found was 2n = 30 and NFa = 56. Two pairs of chromosomes showed markings of the nucleolus organizing regions (AgNORs) in the species D. anderseni and only one pair in D. gnoma, differing from what has already been described for D. cinerea. The two species analyzed here also showed differences in the sex chromosome system, with D. gnoma showing a neo-XY type system while in D. anderseni the classic XY sexual system was observed. In both species, visualization of the constitutive heterochromatin occurred in the pericentromeric region of all chromosomes, as well as in the short arms of the subtelocentric chromosomes. The present work represents an important expansion of karyotypic information for the subfamily Stenodermatinae, bringing chromosomal features that are possible to use in the taxonomic implications of the group.
Collapse
Affiliation(s)
- Ricardo Firmino de Sousa
- Instituto de Ciências Biológicas, Programa de Pós-Graduação em Ecologia e Conservação da Biodiversidade, Universidade Federal do Mato Grosso – UFMT. Av. Fernando Corrêa da Costa, n° 2367, Bairro Boa Esperança. Cuiabá – MT, BrazilUniversidade Federal do Mato GrossoCuiabáBrazil
- Faculdade de Ciências Agrárias, Biológicas e Sociais Aplicadas, Universidade do Estado de Mato Grosso, Av. Prof. Dr. Renato Figueiro Varella, s/n, Nova Xavantina, MT, BrazilUniversidade Federal do Mato GrossoCuiabáBrazil
| | - Paulo Cesar Venere
- Instituto de Ciências Biológicas, Programa de Pós-Graduação em Ecologia e Conservação da Biodiversidade, Universidade Federal do Mato Grosso – UFMT. Av. Fernando Corrêa da Costa, n° 2367, Bairro Boa Esperança. Cuiabá – MT, BrazilUniversidade Federal do Mato GrossoCuiabáBrazil
| | - Karina de Cassia Faria
- Faculdade de Ciências Agrárias, Biológicas e Sociais Aplicadas, Universidade do Estado de Mato Grosso, Av. Prof. Dr. Renato Figueiro Varella, s/n, Nova Xavantina, MT, BrazilUniversidade Federal do Mato GrossoCuiabáBrazil
| |
Collapse
|
3
|
Bueno V, Konerat JT, Zawadzki CH, Venere PC, Blanco DR, Margarido VP. Divergent Chromosome Evolution in Hypostominae Tribes (Siluriformes: Loricariidae): Correlation of Chromosomal Data with Morphological and Molecular Phylogenies. Zebrafish 2018; 15:492-503. [DOI: 10.1089/zeb.2018.1612] [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)
- Vanessa Bueno
- Coordenação do Curso de Ciências Biológicas, Universidade Tecnológica Federal do Paraná, Santa Helena, Brazil
| | - Jocicléia Thums Konerat
- Centro de Ciências Biológicas e da Saúde, Universidade Estadual do Oeste do Paraná, Cascavel, Brazil
| | | | - Paulo Cesar Venere
- Laboratório de Citogenética e Genética Animal, Instituto de Biociências, Universidade Federal de Mato Grosso, Cuiabá, Brazil
| | - Daniel Rodrigues Blanco
- Coordenação do Curso de Ciências Biológicas, Universidade Tecnológica Federal do Paraná, Santa Helena, Brazil
| | - Vladimir Pavan Margarido
- Centro de Ciências Biológicas e da Saúde, Universidade Estadual do Oeste do Paraná, Cascavel, Brazil
| |
Collapse
|
4
|
Takagui FH, Moura LFD, Ferreira DC, Centofante L, Vitorino CDA, Bueno V, Margarido VP, Venere PC. Karyotype Diversity in Doradidae (Siluriformes, Doradoidea) and Presence of the Heteromorphic ZZ/ZW Sex Chromosome System in the Family. Zebrafish 2017; 14:236-243. [PMID: 28192063 DOI: 10.1089/zeb.2016.1368] [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
Karyotypes and other chromosomal markers as revealed by conventional and molecular cytogenetic protocols in four species of the catfish family Doradidae from the Araguaia-Tocantins river basin, namely Hassar wilderi, Leptodoras cataniae, Tenellus leporhinus and Tenellus trimaculatus were examined. All species had diploid chromosome number 2n = 58 and karyotypes dominated by biarmed chromosomes, simple NOR phenotype, that is, one chromosome pair bearing this site in terminal position, but some differences in karyotypes and distribution of constitutive heterochromatin, position of rDNA sites. Such characteristics appeared species-specific. A ZZ/ZW sex chromosome system was found in Tenellus trimaculatus, resulting likely from the amplification of the heterochromatin, followed by a paracentric inversion. Our results confirmed low karyotype differentiation observed until now among representatives of this endemic catfish family.
Collapse
Affiliation(s)
- Fábio Hiroshi Takagui
- 1 Laboratório de Citogenética Animal, Departamento de Biologia Geral, CCB, Universidade Estadual de Londrina , Londrina, Brazil
| | - Lucas Ferreira de Moura
- 2 Laboratório de Ictiologia, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso , Pontal do Araguaia, Brazil
| | - Daniela Cristina Ferreira
- 3 Laboratório de Citogenética e Genética Animal, Instituto de Biociências, Universidade Federal de Mato Grosso , Cuiabá, Brazil
| | - Liano Centofante
- 3 Laboratório de Citogenética e Genética Animal, Instituto de Biociências, Universidade Federal de Mato Grosso , Cuiabá, Brazil
| | - Carla de Andrade Vitorino
- 4 Programa de Pós Graduação em Ecologia e Conservação da Biodiversidade, Instituto de Biociências, Universidade Federal de Mato Grosso , Cuiabá, Brazil
| | - Vanessa Bueno
- 5 Universidade Tecnológica Federal do Paraná , Prolongamento da Rua Cerejeira s/n, Paraná, Brazil
| | - Vladimir Pavan Margarido
- 6 Laboratório de Citogenética de peixes, Centro de Ciências Biológicas e da Saúde, Universidade Estadual do Oeste do Paraná , Paraná, Brazil
| | - Paulo Cesar Venere
- 3 Laboratório de Citogenética e Genética Animal, Instituto de Biociências, Universidade Federal de Mato Grosso , Cuiabá, Brazil .,4 Programa de Pós Graduação em Ecologia e Conservação da Biodiversidade, Instituto de Biociências, Universidade Federal de Mato Grosso , Cuiabá, Brazil
| |
Collapse
|
5
|
de Sousa TP, Marques DKS, Vitorino CDA, Faria KDC, Braga GDSF, Ferreira DC, Venere PC. Cytogenetic and Molecular Data Support the Occurrence of Three Gymnotus Species (Gymnotiformes: Gymnotidae) Used as Live Bait in Corumbá, Brazil: Implications for Conservation and Management of Professional Fishing. Zebrafish 2017; 14:177-186. [PMID: 28151699 DOI: 10.1089/zeb.2016.1356] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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: 10/20/2022] Open
Abstract
In the Pantanal of Mato Grosso do Sul, electric fish (Gymnotus spp.) are the primary source of live bait, accounting for more than three-quarters of total sales. Based on chromosomal and molecular markers, the present study attempted to identify the Gymnotus species used as bait in the region of Corumbá, Mato Grosso do Sul, Brazil. Three species were detected, based on their distinct karyotypes: G. paraguensis (2n = 54), G. sylvius (2n = 40), and G. pantanal (2n = 39-40, X1X2Y/X1X1X2X2), with no evidence being found of interspecific hybrids. All three species presented a single nucleolar organizer regions (NOR) (heterochromatin CMA3+/DAPI-) and pericentromeric heterochromatin in almost all chromosomes, with a few distal and/or interstitial blocks. G. sylvius and G. pantanal had one and two pairs of chromosomes with 5S rDNA sites, respectively, while G. paraguensis had 17 chromosome pairs with these markers. The three species formed well-defined clusters in the DNA barcoding analysis. The integrated analysis of the cytogenetic and DNA barcoding data confirmed that the diversity of Gymnotus species exploited as live bait in the study region has been underestimated. These findings indicate that the markers analyzed represent valuable tools for the conservation and fishery management of the Gymnotus stocks exploited.
Collapse
Affiliation(s)
- Tatiane Pires de Sousa
- 1 Programa de Pós-graduação em Ecologia e Conservação, Universidade do Estado de Mato Grosso, Nova Xavantina, MT, Brazil
| | | | - Carla de Andrade Vitorino
- 3 Programa de Pós-graduação em Ecologia e Conservação da Biodiversidade, Instituto de Biociências, Universidade Federal de Mato Grosso, Cuiabá, MT, Brazil
| | - Karina de Cassia Faria
- 1 Programa de Pós-graduação em Ecologia e Conservação, Universidade do Estado de Mato Grosso, Nova Xavantina, MT, Brazil
| | - Gisele da Silva Ferreira Braga
- 3 Programa de Pós-graduação em Ecologia e Conservação da Biodiversidade, Instituto de Biociências, Universidade Federal de Mato Grosso, Cuiabá, MT, Brazil
| | - Daniela Cristina Ferreira
- 4 Programa de Pós-graduação em Zoologia, Instituto de Biociências, Universidade Federal de Mato Grosso, Cuiabá, MT, Brazil
| | - Paulo Cesar Venere
- 1 Programa de Pós-graduação em Ecologia e Conservação, Universidade do Estado de Mato Grosso, Nova Xavantina, MT, Brazil .,3 Programa de Pós-graduação em Ecologia e Conservação da Biodiversidade, Instituto de Biociências, Universidade Federal de Mato Grosso, Cuiabá, MT, Brazil .,4 Programa de Pós-graduação em Zoologia, Instituto de Biociências, Universidade Federal de Mato Grosso, Cuiabá, MT, Brazil
| |
Collapse
|
6
|
Ramirez JL, Carvalho-Costa LF, Venere PC, Carvalho DC, Troy WP, Galetti PM. Testing monophyly of the freshwater fish Leporinus (Characiformes, Anostomidae) through molecular analysis. J Fish Biol 2016; 88:1204-1214. [PMID: 26822755 DOI: 10.1111/jfb.12906] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 12/18/2015] [Indexed: 06/05/2023]
Abstract
Monophyly of the genus Leporinus (Characiformes: Anostomidae) was tested by sequencing and analysing a total of 4732 bp, including two mitochondrial [cytochrome oxidase subunit 1 (CO1) and cytochrome b (Cytb)] and three nuclear [myosin heavy chain 6 cardiac muscle alpha (Myh6), recombination activating gene 1 (RAG1) and recombination activating gene 2 (RAG2)] loci for 22 species of Leporinus, or c. 25% of all described species in the genus. Phylogenetic tree analyses (maximum parsimony, maximum likelihood and Bayesian species tree) indicate Leporinus to be paraphyletic, with monophyly being rejected by both Kishino-Hasegawa and Shimodaira-Hasegawa tests. The sequenced species of Leporinus are distributed across five clades that are interleaved among other anostomid genera. Several taxonomic changes are suggested as being necessary to restore monophyly for the group. The clade containing the type species, Leporinus fasciatus, should be considered Leporinus sensu stricto and at least three new genera should be described for other species currently considered part of Leporinus.
Collapse
Affiliation(s)
- J L Ramirez
- Laboratório de Biodiversidade Molecular e Conservação, Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos, SP, Brasil
| | - L F Carvalho-Costa
- Departamento de Biologia, Universidade Federal de Maranhão, São Luis, MA, Brasil
| | - P C Venere
- Laboratório de Citogenética e Genética Animal, Instituto de Biociências, Universidade Federal do Mato Grosso, Cuiabá, MT, Brasil
| | - D C Carvalho
- Laboratório de Genética da Conservação, Programa de Pós-graduação em Zoologia de Vertebrados, PUC Minas, Belo Horizonte, MG, Brasil
| | - W P Troy
- Laboratório de Ictiologia e Citogenética Animal, Universidade do Estado de Mato Grosso (UNEMAT), campus de Tangará da Serra, Cáceres, MT, Brasil
| | - P M Galetti
- Laboratório de Biodiversidade Molecular e Conservação, Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos, SP, Brasil
| |
Collapse
|
7
|
Tenório RCCDO, Vitorino CDA, Souza IL, Oliveira C, Venere PC. Comparative cytogenetics in Astyanax (Characiformes: Characidae) with focus on the cytotaxonomy of the group. Neotrop ichthyol 2013. [DOI: 10.1590/s1679-62252013000300008] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [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
Astyanax is a diverse group of Neotropical fishes, whose different forms occupy different environments. This great diversity is also reflected on cytogenetic aspects and molecular markers, which have repeatedly been demonstrated by cytogenetic studies. In order to characterize the karyotype of species of this genus, six species were studied: Astyanax altiparanae, A.argyrimarginatus, A. elachylepis, A. xavante, and two new species provisionally called Astyanax sp. and A. aff. bimaculatus. A detailed cytogenetic study based on conventional staining with Giemsa, AgNORs, C-banding, base-specific fluorochromes, and FISH using ribosomal genes 18S and 5S was conducted, aiming to understand some of the chromosomal mechanisms associated with the high diversification that characterizes this group and culminated with the establishment of these species. The results showed 2n = 50 chromosomes for five species and a karyotype with 52 chromosomes in Astyanax sp. Small variations in the macrostructure of the karyotypes were identified, which were quite relevant when analyzed by classical banding, fluorochromes, and FISH methods. These differences among Astyanax spp. (2n = 50) are largely due to changes in the amount and types of heterochromatic blocks. Astyanax sp (2n = 52), in addition to variations due to heterochromatic blocks, has its origin possibly by events of centric fission in a pair of chromosomes followed by minor rearrangements.These results show an interesting karyotypic diversity in Astyanax and indicate the need of a review of the group referred as A. aff. bimaculatus and the description of Astyanax sp., including the possibility of inclusion of this unit in another genus.
Collapse
|
8
|
Lui RL, Blanco DR, Martinez JDF, Margarido VP, Venere PC, Moreira Filho O. The role of chromosomal fusion in the karyotypic evolution of the genus Ageneiosus (Siluriformes: Auchenipteridae). Neotrop ichthyol 2013. [DOI: 10.1590/s1679-62252013005000004] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ageneiosus is the most widely distributed genus of the family Auchenipteridae among South American river basins. Although chromosome studies in the family are scarce, this genus has the largest number of analyzed species, with 2n = 54 to 56 chromosomes, differing from the rest of the family (2n = 58). This study aimed to analyze Ageneiosus inermis from the Araguaia River basin. The diploid number found was of 56 chromosomes. Heterochromatin was allocated in terminal region of most chromosomes, plus a pericentromeric heterochromatic block in pair 1, a pair distinguished by size in relation to other chromosomes pairs. AgNORs were detected in only one submetacentric chromosome pair, which was confirmed by FISH. 5S rDNA was present in only one metacentric chromosome pair. Hybridization with [TTAGGG]n sequence marked the telomeres of all chromosomes, in addition to an ITS in the proximal region of the short arm of pair 1. The repetitive [GATA]n sequence was dispersed, with preferential location in terminal region of the chromosomes. Ageneiosus has a genomic organization somewhat different when compared to other Auchenipteridae species. Evidences indicate that a chromosomal fusion originated the first metacentric chromosome pair in A. inermis, rearrangement which may be a basal event for the genus
Collapse
|
9
|
Abstract
In the state of Mato Grosso, studies aiming to investigate the diversity and richness of bats are still scarce. In the present study, the chiropteran fauna of eastern Mato Grosso (Brazil) was investigated at four sites representing the Cerrado savanna biome with different degrees of anthropogenic impact, in the municipality of Nova Xavantina. Surveys were conducted between January and December, 2010, with a total of 48 nights of mist-netting. A total of 423 bats were captured, representing 25 species distributed in five families. A greater abundance of individuals was recorded at all sites during the rainy season, with considerable variation being observed over the course of the year in species richness and composition, and the abundance of bats. Species richness and bat abundance were higher in the better preserved habitats in comparison with the impacted areas. The timing of foraging activities appeared to vary among the specimens and there was a progressive increase in activity until 19:30 h, with a marked decline after 22:30 h. The ecological diversity (Shannon-Wiener index) of the bat community within the study area was H′ = 2.37.
Collapse
Affiliation(s)
| | - Paulo Cesar Venere
- Departamento de Ciências Biológicas, Brazil; Universidade Federal de Mato Grosso, Brazil
| | - Karina de Cassia Faria
- Universidade do Estado de Mato Grosso, Brazil; Departamento de Ciências Biológicas, Brazil
| |
Collapse
|
10
|
Moraes LN, Borges MF, Sousa PAC, Venere PC, Souza IL. Lack of association of CYP1A1-MspI SNP and GSTM1 null genotypes with cancer in a Brazilian family with unusually high cancer incidence. Genet Mol Res 2012; 11:1610-7. [PMID: 22782580 DOI: 10.4238/2012.june.15.10] [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
Research has shown that genetic polymorphisms in biotransformation enzymes, such as CYP1A1 and GSTM1, are related to a greater or lesser susceptibility to various cancers. We made an analysis of CYP1A1m1 SNP and GSTM1 null genotypes in a family group (71 members) related by consanguinity who had an unusually high incidence of cancer and a high frequency of smokers. There were no significant differences in genotype frequencies in this family when compared to data for Brazilian populations. Possibly, the high incidence of cancer in this sample is associated with smoking and/or other factors not detected in this survey.
Collapse
Affiliation(s)
- L N Moraes
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso, Campus Universitário do Araguaia, Barra do Garças, MT, Brasil
| | | | | | | | | |
Collapse
|
11
|
Arrais-Silva WW, Rodrigues RSV, de Moraes LN, Venere PC, Lunardi RR, Souza IL, de Souza Souto PC. First report of occurrence of Triatoma williami Galvão, Souza e Lima, 1965 naturally infected with Trypanosoma cruzi Chagas, 1909 in the State of Mato Grosso, Brazil. Asian Pacific Journal of Tropical Disease 2011. [DOI: 10.1016/s2222-1808(11)60040-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
12
|
Vitorino CA, Souza IL, Rosa JN, Valente GT, Martins C, Venere PC. Molecular cytogenetics and its contribution to the understanding of the chromosomal diversification in Hoplias malabaricus (Characiformes). J Fish Biol 2011; 78:1239-1248. [PMID: 21463318 DOI: 10.1111/j.1095-8649.2011.02930.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Cytogenetic markers were used to compare the karyotypes of an isolated population of Hoplias malabaricus with others previously described. The results revealed peculiar characteristics that indicate a new independent evolutionary unit within the H. malabaricus complex.
Collapse
Affiliation(s)
- C A Vitorino
- Universidade do Estado de Mato Grosso (UNEMAT), PPG Ecologia e Conservação, CP 08, 78.690-000 Nova Xavantina, MT, Brazil
| | | | | | | | | | | |
Collapse
|
13
|
Garutti V, Venere PC. Astyanax xavante, a new species of characid from middle rio Araguaia in the Cerrado region, Central Brazil (Characiformes: Characidae). Neotrop ichthyol 2009. [DOI: 10.1590/s1679-62252009000300004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Astyanax xavante is described from a creek of the middle rio Araguaia drainage located in the Cerrado region of the Brazilian Central Plateau. The new species is distinguished from congeners by the combination of pigmentation, morphometric, meristic, morphologic, and tooth features. Ecological notes for A. xavante are included.
Collapse
|
14
|
Venere PC, Souza IL, Martins C, Oliveira C. Occurrence of ZZ/ZW sex chromosomes in Thoracocharax stellatus fish (Characiformes, Gasteropelecidae) from the Araguaia River, South America. Genetica 2007; 133:109-12. [PMID: 17768596 DOI: 10.1007/s10709-007-9194-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2007] [Accepted: 08/17/2007] [Indexed: 10/22/2022]
Abstract
The karyotypic and chromosomal characteristics of the hatchetfish Thoracocharax stellatus from the Araguaia River, Brazil (Araguaia-Tocantins basin) were analyzed using Giemsa, AgNO(3), and CMA(3) fluorescent staining, and C-banding. The diploid chromosome number was 54 and the karyotypes of females and males were composed of six metacentrics, six submetacentrics, six subtelocentrics and 36 acrocentrics. Two unpaired acrocentric chromosomes were detected in the female karyotype. C-banding showed heterochromatic blocks at several chromosomes and an entirely heterochromatic acrocentric chromosome in females that was lacking in the male karyotype. This discovery indicated a heteromorphic sex chromosome system of the ZZ/ZW type. Ag-staining and CMA(3) fluorescence revealed one major chromosome pair bearing the NORs with the presence of additional signals in some metaphases. Both heterochromatic segments associated with Ag-NORs and the W chromosome were positively stained by CMA(3). Considering the present data and previous findings it is hypothesized that the occurrence of ZW sex chromosome system is widespread in the genus Thoracocharax.
Collapse
Affiliation(s)
- Paulo Cesar Venere
- Instituto Universitário do Araguaia, Universidade Federal de Mato Grosso, Pontal do Araguaia, MT, 78698-000, Brazil.
| | | | | | | |
Collapse
|
15
|
Marques DK, Venere PC, Galetti Junior PM. Chromosomal characterization of the bonytongue Arapaima gigas (Osteoglossiformes: Arapaimidae). Neotrop ichthyol 2006. [DOI: 10.1590/s1679-62252006000200007] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [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
The mitotic chromosomes of the pirarucu Arapaima gigas inhabiting the middle Araguaia River and collected in the municipality of Araguaiana (MT, Brazil) were studied. The chromosomes were analyzed through Giemsa staining, C-banding, Ag-NOR staining and in situ hybridization using an 18S rRNA gene probe. The karyotype had 2n=56 comprising 14 biarmed and 14 uniarmed chromosome pairs in both sexes. No cytologically distinguishable sex chromosome was identified. A single NOR-bearing chromosome pair was detected by Ag-NOR staining and confirmed by 18S rDNA- FISH. Faint constitutive heterochromatin was C-banded in the centromeric region of some chromosomes.
Collapse
Affiliation(s)
- Debora Karla Marques
- Centro de Pesquisa Agropecuária do Pantanal; Empresa Brasileira de Pesquisa Agropecuária, Brazil
| | | | | |
Collapse
|
16
|
Oliveira RRD, Souza IL, Venere PC. Karyotype description of three species of Loricariidae (Siluriformes) and occurrence of the ZZ/ZW sexual system in Hemiancistrus spilomma Cardoso & Lucinda, 2003. Neotrop ichthyol 2006. [DOI: 10.1590/s1679-62252006000100010] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [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
The neotropical freshwater systems have a high number of catfish species (Siluriformes), and many of those are denominated "cascudos" in Brazil. Cytogenetic data about three "cascudos" species fished in the rio Araguaia are described in the present study. The Pterygoplichthys joselimaianus showed 2n=52, with 28 metacentrics (M) chromosomes, 16 submetacentrics (SM) and 8 subtelocentrics/acrocentrics (ST/A) in both sexes. Hemiancistrus spinosissimus showed 2n=52, with karyotype formulae 26M+22SM+4ST, in both sexes. Hemiancistrusspilomma also showed 2n=52, but in this species a ZZ/ZW sex chromosome system (25M+21SM+6ST in females and 24M+22SM+6ST in males) was observed. The cells from H. spinosissimus and P. joselimaianus showed one chromosome pair bearing Ag-NORs, while in the H. spilomma three chromosome pairs bearing Ag-NORs were detected. The data showed in this work reveal particular chromosomal characteristics, important for a good recognition of both Hemincistrus species, and also show the importance of the insertion of cytogenetic data on taxonomic phylogenetic studies.
Collapse
|
17
|
Oliveira VD, Poleto SL, Venere PC. Feeding of juvenile pirarucu (Arapaima gigas, Arapaimidae) in their natural environment, lago Quatro Bocas, Araguaiana-MT, Brazil. Neotrop ichthyol 2005. [DOI: 10.1590/s1679-62252005000200010] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [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
The stomach content of samples of juvenile Arapaima gigas was analized to obtain information about feeding in natural environments. This species occurs in the Amazonian basin, predominantly in floodplain environment. This is the case of the valley of the middle rio Araguaia, where the lago Quatro Bocas is situated. Juveniles A. gigas prefered insects, microcrustaceans and gastropods, most of autochthonous origin. All the stomachs examined contained at least one food item.
Collapse
|
18
|
Abstract
A wide range of sex chromosome mechanisms, including simple and multiple chromosome systems is characteristic of fishes. The Leporinus genus represent a good model to study sex chromosome mechanisms, because an unambiguous ZZ/ZW sex chromosome system was previously described for seven species, while the remaining studied species of the genus do not show differentiated sex chromosomes. The occurrence of sex chromosomes in Leporinus trifasciatus and Leporinus sp2 from the Araguaia river, Amazon basin, Brazil, was here investigated. ZZ/ZW sex chromosomes were detected for both species. The Z and W chromosome morphology of L. trifasciatus is the same as described for other species of the genus Leporinus. However, the Z and W chromosomes of L. sp2 were quite different in their morphology and banding pattern suggesting that the ZW system of this species have originated independently from the ZW system previously described for other Leporinus.
Collapse
Affiliation(s)
- Paulo Cesar Venere
- Instituto de Ciências e Letras do Médio Araguaia, Universidade Federal de Mato Grosso, 78698-000 Pontal do Araguaia, MT, Brazil.
| | | | | | | |
Collapse
|
19
|
Abstract
Supernumerary chromosomes were described for five species of Neotropical characiform fishes. These extra chromosomes were small, acrocentric and fully heterochromatic in Leporinus friderici from two different localities as well as in Leporinus sp., but metacentric and fully heterochromatic in Cyphocharax modesta and Prochilodus nigricans. In Characidium cf. zebra, this element was small, acrocentric and euchromatic. GC-rich DNA blocks were observed in the supernumerary chromosome of Leporinus sp. using chromomycin A3. The widespread occurrence of these extra chromosomal elements suggests their independent origins.
Collapse
|
20
|
Affiliation(s)
| | - Paulo Cesar Venere
- Universidade Federal do Mato Grosso, Instituto de Ciências e Letras do Médio Araguaia
| | | |
Collapse
|
21
|
Galetti Júnior PM, Mestriner CA, Venere PC, Foresti F. Heterochromatin and karyotype reorganization in fish of the family Anostomidae (Characiformes). Cytogenet Cell Genet 1991; 56:116-21. [PMID: 2013229 DOI: 10.1159/000133063] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Mitotic chromosomes of four fish species of the family Anostomidae, belonging to the genera Leporinus, Leporellus, and Schizodon, were studied. With 2n = 54 meta- and sub-metacentric chromosomes, this family appears to be characterized by marked karyotypic stability. Although perceptible differences exist, mainly in the amount of constitutive heterochromatin present in the chromosomes of these species, these differences do not affect the structure and/or size of these chromosomes. Chromatin substitutions and/or modifications may have led, in one direction, to an increase in heterochromatin in some species and, in the opposite direction, to heterochromatin reduction in others. Whether these changes are accompanied by changes in the amount of euchromatin in the chromosomes is an open question. The nucleolar organizer regions, which may be located on different chromosomes in the various species, may also be indicators of reorganization of these karyotypes.
Collapse
Affiliation(s)
- P M Galetti Júnior
- Departamento de Ciências Biológicas, Universidade Federal de São Carlos, São Paulo, Brazil
| | | | | | | |
Collapse
|