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Souza KL, Melo S, Peixoto MA, Travenzoli NM, Feio RN, Dergam JA. Repetitive DNA Mapping in Five Genera of Tree Frogs (Amphibia: Anura) from the Atlantic Forest: New Highlights on Genomic Organization in Hylidae. Cytogenet Genome Res 2024; 163:317-326. [PMID: 38368863 DOI: 10.1159/000537875] [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] [Received: 06/20/2023] [Accepted: 02/14/2024] [Indexed: 02/20/2024] Open
Abstract
INTRODUCTION The tribes Cophomantini, Scinaxini, and Dendropsophini are anurans that belong to Hylidae, with wide distribution in tropical and subtropical regions around the world. The taxonomy and systematics of this family remain in a state of ongoing revision. Previous cytogenetic analyses of genera Boana, Bokermannohyla, Ololygon, Scinax, and Dendropsophus described some karyotypic characters such as conventional staining, C-banding and NORs, and FISH with specific probes. METHODS This study describes for the first time the karyotypes of four species: Bokermannohyla ibitipoca, Ololygon luizotavioi, Dendropsophus bipunctatus, and Dendropsophus ruschii. Furthermore, we map CA(15) and CAT(10) microsatellite sites for the aforementioned species and six more species from the same genera for insight into the chromosomal evolution within the subfamily Hyalinae. RESULTS B. ibitipoca and O. luizotavioi had 2n = 24 and karyotypic formulas 18m + 4sm + 2st and 8m + 12sm + 4st, while D. bipunctatus and D. ruschii showed 2n = 30 and karyotypic formulas 12m + 12sm + 4st + 2t and 10m + 10sm + 6st + 4t, respectively. The diploid numbers and karyotypic formulas revealed here follow the previously reported trend for Hylidae, except B. ibitipoca has a particularity of eight metacentric chromosomes, more than what is commonly found in species of this genus. The microsatellites probes CA(15) and CAT(10) had markings accumulated in blocks in the centromeric, pericentromeric, and terminal regions that were more specific for some species, as well as markings scattered along the chromosomes. We present a comprehensive review table of current data on cytogenetics of these genera. CONCLUSION Our findings showed that the karyotypes of the hylids studied here majority fit the postulated conserved diploid number (2n = 24) and morphological chromosome patterns, while the mapping of the microsatellites enabled us to detect differences between species that share similar chromosomal morphologies.
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Affiliation(s)
- Késsia Leite Souza
- Department of Animal Biology, Laboratory of Molecular Systematics (Beagle), Federal University of Viçosa, Vicosa, Brazil
| | - Silvana Melo
- Department of Structural and Functional Biology, Laboratory of Fish Biology and Genetics, Botucatu Institute of Biosciences, Paulista State University, Botucatu, Brazil
| | - Marco Antônio Peixoto
- Department of General Biology, Biometrics Laboratory, Federal University of Viçosa, Vicosa, Brazil
| | - Natália Martins Travenzoli
- Department of Animal Biology, Laboratory of Molecular Systematics (Beagle), Federal University of Viçosa, Vicosa, Brazil
| | - Renato Neves Feio
- Department of Animal Biology, Museum of Zoology João Moojen (MZUFV), Federal University of Viçosa, Vicosa, Brazil
| | - Jorge Abdala Dergam
- Department of Animal Biology, Laboratory of Molecular Systematics (Beagle), Federal University of Viçosa, Vicosa, Brazil
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Targueta CP, Gatto KP, Vittorazzi SE, Recco-Pimentel SM, Lourenço LB. High diversity of 5S ribosomal DNA and evidence of recombination with the satellite DNA PcP190 in frogs. Gene 2022; 851:147015. [DOI: 10.1016/j.gene.2022.147015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 09/25/2022] [Accepted: 10/25/2022] [Indexed: 11/04/2022]
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Dominato RC, de Oliveira GC, Cassini CS, Orrico VGD, Mariano CDSF, Silva JG. First karyotype description of the species of Adenomera Steindachner, 1867 (Anura, Leptodactylidae) in the " thomei" clade. COMPARATIVE CYTOGENETICS 2022; 16:151-159. [PMID: 36762072 PMCID: PMC9849051 DOI: 10.3897/compcytogen.v16.i3.82641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 04/06/2022] [Indexed: 06/18/2023]
Abstract
The genus Adenomera Steindachner, 1867 currently comprises 29 nominal species, some of which are suggested to be cryptic species complexes. The present study was carried out with specimens of the "thomei" clade that encompasses three taxa distributed in the Atlantic Forest biome: Adenomerathomei Almeida et Angulo, 2006, Adenomera sp. L., and Adenomera sp. M. We used classical cytogenetics to describe the diploid number and karyomorphology of these three species collected in two different locations in the state of Bahia, Brazil. Our results revealed the diploid number 2n = 24 (FN = 34) with two pairs of metacentric chromosomes (pairs 1 and 5), three pairs of submetacentric chromosomes (pairs 2, 3, and 4), and seven pairs of telocentric chromosomes (pairs 6, 7, 8, 9, 10, 11, and 12). Further morphological, bioacoustic, and cytogenetic data (C-banding and AgNor) are needed to better delineate the lineages within the "thomei" clade.
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Affiliation(s)
- Ramon Costa Dominato
- Programa de Pós-Graduação em Genética e Biologia Molecular, Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado, Km 16. CEP: 45662-900 Ilhéus, BA BrazilUniversidade Estadual de Santa CruzIlhéusBrazil
| | - Guilherme Costa de Oliveira
- Programa de Pós-Graduação em Genética e Biologia Molecular, Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado, Km 16. CEP: 45662-900 Ilhéus, BA BrazilUniversidade Estadual de Santa CruzIlhéusBrazil
| | - Carla Santana Cassini
- Programa de Pós-Graduação em Genética e Biologia Molecular, Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado, Km 16. CEP: 45662-900 Ilhéus, BA BrazilUniversidade Estadual de Santa CruzIlhéusBrazil
| | - Victor Goyannes Dill Orrico
- Programa de Pós-Graduação em Genética e Biologia Molecular, Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado, Km 16. CEP: 45662-900 Ilhéus, BA BrazilUniversidade Estadual de Santa CruzIlhéusBrazil
| | - Cléa dos Santos Ferreira Mariano
- Programa de Pós-Graduação em Genética e Biologia Molecular, Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado, Km 16. CEP: 45662-900 Ilhéus, BA BrazilUniversidade Estadual de Santa CruzIlhéusBrazil
| | - Janisete Gomes Silva
- Programa de Pós-Graduação em Genética e Biologia Molecular, Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado, Km 16. CEP: 45662-900 Ilhéus, BA BrazilUniversidade Estadual de Santa CruzIlhéusBrazil
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Guzmán-Markevich K, Roco ÁS, Ruiz-García A, Bullejos M. Cytogenetic Analysis in the Toad Species Bufo spinosus, Bufotes viridis and Epidalea calamita (Anura, Bufonidae) from the Mediterranean Area. Genes (Basel) 2022; 13:genes13081475. [PMID: 36011385 PMCID: PMC9408106 DOI: 10.3390/genes13081475] [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: 07/28/2022] [Revised: 08/13/2022] [Accepted: 08/14/2022] [Indexed: 11/06/2022] Open
Abstract
Taxonomy in Bufonidae witnessed notable transformations. Bufotes viridis and Epidalea calamita, previously included in genus Bufo, were relocated in other genera, while the genus Bufo was restricted to members of the earlier Bufo bufo group. On the other hand, Bufo bufo sensu lato now includes four species: Bufo bufo, Bufo spinosus, Bufo verrucosissimus and Bufo eichwaldi. In this study, we examined three species of three Bufonidae genera (B. spinosus, B. viridis and E. calamita) by conventional (C-banding and Ag-NOR staining) and molecular (in situ hybridization with probes for telomeric repeats and rDNA loci, and genomic in situ hybridization (GISH)) cytogenetic methods. C-banding patterns are reported for the first time for B. spinosus and E. calamita populations from Iberian Peninsula and for B. viridis from Greece, and reveal several differences with the reported C-banded karyotypes described for other European populations of these species. Silver staining shows size heteromorphisms of the signals at the Nucleolar Organizing Region (NOR). By contrast, FISH with ribosomal probes only reveal size heteromorphism of rDNA sequences in E. calamita, suggesting that the differences observed after silver staining in B. spinosus and B. viridis should be attributed to differences in chromosomal condensation and/or gene activity rather than to differences in the copy number for ribosomal genes. Regarding telomeric repeats, E. calamita is the only species with interstitial telomeric sequences (ITS) located on centromeric regions, probably originated by accumulation of telomeric sequences in the centromeric heterochromatin. Finally, we analyzed the composition and distribution of repetitive sequences by genome in situ hybridization. These experiments reveal the accumulation of repetitive sequences in centromeric regions of the three species, although these sequences are not conserved when species from different genera are compared.
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Vicari MR, Bruschi DP, Cabral-de-Mello DC, Nogaroto V. Telomere organization and the interstitial telomeric sites involvement in insects and vertebrates chromosome evolution. Genet Mol Biol 2022; 45:e20220071. [DOI: 10.1590/1678-4685-gmb-2022-0071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 09/24/2022] [Indexed: 11/16/2022] Open
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Orrico VGD, Grant T, Faivovich J, Rivera-Correa M, Rada MA, Lyra ML, Cassini CS, Valdujo PH, Schargel WE, Machado DJ, Wheeler WC, Barrio-Amorós C, Loebmann D, Moravec J, Zina J, Solé M, Sturaro MJ, Peloso PLV, Suarez P, Haddad CFB. The phylogeny of Dendropsophini (Anura: Hylidae: Hylinae). Cladistics 2021; 37:73-105. [PMID: 34478175 DOI: 10.1111/cla.12429] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/18/2020] [Indexed: 11/29/2022] Open
Abstract
The relationships of the hyline tribe Dendropsophini remain poorly studied, with most published analyses dealing with few of the species groups of Dendropsophus. In order to test the monophyly of Dendropsophini, its genera, and the species groups currently recognized in Dendropsophus, we performed a total evidence phylogenetic analysis. The molecular dataset included sequences of three mitochondrial and five nuclear genes from 210 terminals, including 12 outgroup species, the two species of Xenohyla, and 93 of the 108 recognized species of Dendropsophus. The phenomic dataset includes 46 terminals, one per species (34 Dendropsophus, one Xenohyla, and 11 outgroup species). Our results corroborate the monophyly of Dendropsophini and the reciprocal monophyly of Dendropsophus and Xenohyla. Some species groups of Dendropsophus are paraphyletic (the D. microcephalus, D. minimus, and D. parviceps groups, and the D. rubicundulus clade). On the basis of our results, we recognize nine species groups; for three of them (D. leucophyllatus, D. microcephalus, and D. parviceps groups) we recognize some nominal clades to highlight specific morphology or relationships and facilitate species taxonomy. We further discuss the evolution of oviposition site selection, where our results show multiple instances of independent evolution of terrestrial egg clutches during the evolutionary history of Dendropsophus.
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Affiliation(s)
- Victor G D Orrico
- Tropical Herpetology Laboratory, Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado, km 16, Ilhéus, CEP 45662-900, Brazil
| | - Taran Grant
- Laboratório de Anfíbios, Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, CEP 05508-090, Brazil
| | - Julian Faivovich
- División Herpetología, Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"-CONICET, Angel Gallardo 470, Buenos Aires, C1405DJR, Argentina.,Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Mauricio Rivera-Correa
- Grupo Herpetológico de Antioquia, Instituto de Biología, Universidad de Antioquia, Medellín, Colombia
| | - Marco A Rada
- Laboratório de Anfíbios, Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, CEP 05508-090, Brazil
| | - Mariana L Lyra
- Departamento de Biodiversidade and Centro de Aquicultura, Instituto de Biociências, Universidade Estadual Paulista (UNESP), Av. 24A 1515, Rio Claro, CEP 13506-900, Brazil
| | - Carla S Cassini
- Tropical Herpetology Laboratory, Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado, km 16, Ilhéus, CEP 45662-900, Brazil
| | - Paula H Valdujo
- Laboratório de Ecologia da Paisagem - Superintendência de Conservação, WWF-Brasil, Entre Quadra SHIS EQL 6/8 Conjunto E, Setor de Habitações Individuais Sul, Brasília, CEP 71620-430, Brazil
| | - Walter E Schargel
- Department of Biology, The University of Texas at Arlington, Arlington, TX, 76019, USA
| | - Denis J Machado
- Department of Bioinformatics and Genomics, University of North Carolina at Charlotte, 9201 University City Blvd., Charlotte, NC, 28223, USA
| | - Ward C Wheeler
- Division of Invertebrate Zoology, American Museum of Natural History, Central Park West, New York, NY, 10024, USA
| | | | - Daniel Loebmann
- Laboratório de Vertebrados, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Av. Itália, km 8, Rio Grande, CEP 96.203-900, Brazil
| | - Jiří Moravec
- Department of Zoology, National Museum, Cirkusová 1740, 193 00 Prague 9, Prague, Czech Republic
| | - Juliana Zina
- Departamento de Ciências Biológicas, Universidade Estadual do Sudoeste da Bahia, Av. José Moreira Sobrinho, Jequié, CEP 45205-490, Brazil
| | - Mirco Solé
- Tropical Herpetology Laboratory, Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado, km 16, Ilhéus, CEP 45662-900, Brazil
| | - Marcelo J Sturaro
- Departamento de Ecologia e Biologia Evolutiva, Universidade Federal de São Paulo, Av. Professor Artur Riedel, 275, Jardim Eldorado, Diadema, CEP 09972-270, Brazil.,Coordenação de Zoologia, Museu Paraense Emílio Goeldi, Avenida Perimetral 1901, Terra Firme, Belém, CEP 66017-970, Brazil
| | - Pedro L V Peloso
- Instituto de Ciências Biológicas, Universidade Federal do Pará, R. Augusto Corrêa, 1, Guamá, Belém, 66075-110, Brazil
| | - Pablo Suarez
- Instituto de Biología Subtropical (IBS), CONICET-UNaM, Bertoni 85, Puerto Iguazú, (3370), Argentina
| | - Célio F B Haddad
- Departamento de Biodiversidade and Centro de Aquicultura, Instituto de Biociências, Universidade Estadual Paulista (UNESP), Av. 24A 1515, Rio Claro, CEP 13506-900, Brazil
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Marciano E, Tanajura G, Costa MA, Orrico VG, Dias IR. Advertisement Call and Cytogenetics of Xenohyla eugenioi Caramaschi, 1998 (Amphibia; Anura; Hylidae), an Enigmatic Frog from Northeastern Brazil. SOUTH AMERICAN JOURNAL OF HERPETOLOGY 2021. [DOI: 10.2994/sajh-d-18-00035.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Euvaldo Marciano
- Centro de Conservação e Manejo de Fauna da Caatinga, Rodovia BR-407, KM 12, 56300-000, Petrolina, PE, Brazil
| | - Giovanni Tanajura
- Programa de Pós-Graduação em Zoologia, Universidade Estadual de Santa Cruz, Rodovia Ilhéus-Itabuna, km 16, 45662-900, Ilhéus, BA, Brazil
| | - Marco Antônio Costa
- Programa de Pós-Graduação em Zoologia, Universidade Estadual de Santa Cruz, Rodovia Ilhéus-Itabuna, km 16, 45662-900, Ilhéus, BA, Brazil
| | - Victor G.D. Orrico
- Programa de Pós-Graduação em Zoologia, Universidade Estadual de Santa Cruz, Rodovia Ilhéus-Itabuna, km 16, 45662-900, Ilhéus, BA, Brazil
| | - Iuri Ribeiro Dias
- Programa de Pós-Graduação em Zoologia, Universidade Estadual de Santa Cruz, Rodovia Ilhéus-Itabuna, km 16, 45662-900, Ilhéus, BA, Brazil
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Alam SMI, Sarre SD, Georges A, Ezaz T. Karyotype Characterisation of Two Australian Dragon Lizards (Squamata: Agamidae: Amphibolurinae) Reveals Subtle Chromosomal Rearrangements Between Related Species with Similar Karyotypes. Cytogenet Genome Res 2020; 160:610-624. [PMID: 33207346 DOI: 10.1159/000511344] [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: 02/13/2020] [Accepted: 09/02/2020] [Indexed: 11/19/2022] Open
Abstract
Agamid lizards (Squamata: Agamidae) are karyotypically heterogeneous. Among the 101 species currently described from Australia, all are from the subfamily Amphibolurinae. This group is, with some exceptions, karyotypically conserved, and all species involving heterogametic sex show female heterogamety. Here, we describe the chromosomes of 2 additional Australian agamid lizards, Tympanocryptis lineata and Rankinia diemensis. These species are phylogenetically and cytogenetically sisters to the well-characterised Pogona vitticeps, but their sex chromosomes and other chromosomal characteristics are unknown. In this study, we applied advanced molecular cytogenetic techniques, such as fluorescence in situ hybridisation (FISH) and cross-species gene mapping, to characterise chromosomes and to identify sex chromosomes in these species. Our data suggest that both species have a conserved karyotype with P. vitticeps but with subtle rearrangements in the chromosomal landscapes. We could identify that T. lineata possesses a female heterogametic system (ZZ/ZW) with a pair of sex microchromosomes, while R. diemensis may have heterogametic sex chromosomes, but this requires further investigations. Our study shows the pattern of chromosomal rearrangements between closely related species, explaining the speciation within Australian agamid lizards of similar karyotypes.
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Affiliation(s)
- Shayer M I Alam
- Centre for Conservation Ecology and Genetics, Institute for Applied Ecology, University of Canberra, Bruce, Australian Capital Territory, Australia,
| | - Stephen D Sarre
- Centre for Conservation Ecology and Genetics, Institute for Applied Ecology, University of Canberra, Bruce, Australian Capital Territory, Australia
| | - Arthur Georges
- Centre for Conservation Ecology and Genetics, Institute for Applied Ecology, University of Canberra, Bruce, Australian Capital Territory, Australia
| | - Tariq Ezaz
- Centre for Conservation Ecology and Genetics, Institute for Applied Ecology, University of Canberra, Bruce, Australian Capital Territory, Australia
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Baldo D, Bunge MM, Barrasso DA, Boeris JM, Ferro JM, Cotichelli L, Úbeda CA, Basso NG. Rebuilding the Cytogenetics of Atelognathus (Anura: Batrachylidae): Half a Century of Confusion. HERPETOLOGICA 2020. [DOI: 10.1655/herpetologica-d-19-00050.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Diego Baldo
- Laboratorio de Genética Evolutiva, Instituto de Biología Subtropical (CONICET-UNaM), Facultad de Ciencias Exactas Químicas y Naturales, Universidad Nacional de Misiones, N3300LQF Posadas, Misiones, Argentina
| | - María Marta Bunge
- Centro Regional Bariloche, Universidad Nacional del Comahue, R 8400 FRF, San Carlos de Bariloche, Río Negro, Argentina
| | - Diego Andrés Barrasso
- Instituto de Diversidad y Evolución Austral (IDEAus-CONICET) and Facultad de Ciencias Naturales y Ciencias de la Salud, Universidad Nacional de la Patagonia “San Juan Bosco,” U9120ACD Puerto Madryn, Chubut, Argentina
| | - Juan Martín Boeris
- Laboratorio de Genética Evolutiva, Instituto de Biología Subtropical (CONICET-UNaM), Facultad de Ciencias Exactas Químicas y Naturales, Universidad Nacional de Misiones, N3300LQF Posadas, Misiones, Argentina
| | - Juan Martín Ferro
- Laboratorio de Genética Evolutiva, Instituto de Biología Subtropical (CONICET-UNaM), Facultad de Ciencias Exactas Químicas y Naturales, Universidad Nacional de Misiones, N3300LQF Posadas, Misiones, Argentina
| | - Leonardo Cotichelli
- Instituto de Diversidad y Evolución Austral (IDEAus-CONICET) and Facultad de Ciencias Naturales y Ciencias de la Salud, Universidad Nacional de la Patagonia “San Juan Bosco,” U9120ACD Puerto Madryn, Chubut, Argentina
| | - Carmen Adria Úbeda
- Centro Regional Bariloche, Universidad Nacional del Comahue, R 8400 FRF, San Carlos de Bariloche, Río Negro, Argentina
| | - Néstor Guillermo Basso
- Instituto de Diversidad y Evolución Austral (IDEAus-CONICET) and Facultad de Ciencias Naturales y Ciencias de la Salud, Universidad Nacional de la Patagonia “San Juan Bosco,” U9120ACD Puerto Madryn, Chubut, Argentina
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Suárez P, Ferro JM, Nagamachi CY, Cardozo DE, Blasco-Zúñiga A, Silva JB, Marciano-JR E, Costa MA, Orrico VGD, Solé M, Roberto IJ, Rivera M, Wiley JE, Faivovich J, Baldo D, Pieczarka JC. Chromosome evolution in Lophyohylini (Amphibia, Anura, Hylinae). PLoS One 2020; 15:e0234331. [PMID: 32525943 PMCID: PMC7289402 DOI: 10.1371/journal.pone.0234331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 05/22/2020] [Indexed: 11/19/2022] Open
Abstract
The hyline tribe Lophyohylini includes 87 species of treefrogs, of which cytogenetics aspects have been studied in less than 20% of them. In order to evaluate the evolution of some of its chromosome characters (NOR position, C-bands, and DAPI/CMA3 bands), we studied the karyotypes of 21 lophyohylines, 16 of them for the first time, and analyzed them in a phylogenetic context. Most species showed similar karyotypes regarding chromosome number (2n = 24) and morphology (FN = 48), excepting Phyllodytes edelmoi and Osteocephalus buckleyi with 2n = 22 (FN = 44) and 2n = 28 (FN = 50), respectively. The NOR location was variable among species and provided valuable phylogenetic information. This marker was located in pair 11 in all species of Trachycephalus, Itapotihyla langsdorffii, and Nyctimantis arapapa, representing the plesiomorphic condition of Lophyohylini. Besides, other apomorphic states were recovered for the clades comprising N. rugiceps and N. siemersi (NOR in pair 5), and Dryaderces pearsoni, Osteocephalus, and Osteopilus (NOR in pair 9). Phyllodytes presented variation for NORs position; they were in pair 2 in P. edelmoi, pair 7 in P. melanomystax, and pair 8 in P. gyrinaethes and P. praeceptor. Polymorphisms in size, number, and activity of this marker were observed for N. siemersi, Osteocephalus fuscifacies, and some species of Trachycephalus. Remarkably, in N. siemersi NORs were detected on a single chromosome in the two specimens studied by this technique, raising the question of how this complex polymorphism is maintained. Interstitial telomeric sequences were found in P. edelmoi, P. melanomystax, and Osteocephalus buckleyi, and their presence seems to be not related to the chromosome reorganization events. Finally, some species showed spontaneous rearrangements, possibly as a consequence of an uncommon phenomenon in anuran cytogenetics: the presence of fragile sites or secondary constrictions not associated with NORs. We propose that this rare feature would have played an important role in the evolution of this group of frogs. From the evidence obtained in this and previous studies, we conclude that Lophyohylini presents a complex chromosome evolution.
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Affiliation(s)
- Pablo Suárez
- Instituto de Biología Subtropical (CONICET-UNaM), Puerto Iguazú, Misiones, Argentina
| | - Juan M. Ferro
- Laboratorio de Genética Evolutiva "Claudio J. Bidau", Instituto de Biología Subtropical (CONICET-UNaM), Facultad de Ciencias Exactas, Químicas y Naturales, Universidad Nacional de Misiones, Posadas, Misiones, Argentina
- * E-mail: (JMF); (DB)
| | - Cleusa Y. Nagamachi
- Laboratório de Citogenética, Centro de Estudos Avançados da Biodiversidade, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Pará, Brasil
| | - Dario E. Cardozo
- Laboratorio de Genética Evolutiva "Claudio J. Bidau", Instituto de Biología Subtropical (CONICET-UNaM), Facultad de Ciencias Exactas, Químicas y Naturales, Universidad Nacional de Misiones, Posadas, Misiones, Argentina
| | - Ailin Blasco-Zúñiga
- Laboratorio de Investigación de Citogenética y Biomoléculas de Anfibios (LICBA), Centro de Investigación para la Salud en América Latina-CISeAL, Facultad de Ciencias Exactas y Naturales, Pontificia Universidad Católica del Ecuador, Quito, Ecuador
| | - Jéssica B. Silva
- Laboratório de Citogenética, Centro de Estudos Avançados da Biodiversidade, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Pará, Brasil
| | - Euvaldo Marciano-JR
- Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brazil
- Centro de Conservação e Manejo de Fauna da Caatinga, Cemafauna-Caatinga, Petrolina, Pernambuco, Brazil
| | - Marco A. Costa
- Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brazil
| | - Victor G. D. Orrico
- Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brazil
| | - Mirco Solé
- Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brazil
| | - Igor J. Roberto
- Departamento de Ciências Biológicas, Pós-graduação em Zoologia, Universidade Federal do Amazonas, Amazonas, Brazil
| | - Miryan Rivera
- Laboratorio de Investigación de Citogenética y Biomoléculas de Anfibios (LICBA), Centro de Investigación para la Salud en América Latina-CISeAL, Facultad de Ciencias Exactas y Naturales, Pontificia Universidad Católica del Ecuador, Quito, Ecuador
| | - John E. Wiley
- Department of Pediatrics/Medical Genetics, East Carolina University School of Medicine, Greenville, NC, United States of America
| | - Julián Faivovich
- División Herpetología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”—CONICET, Buenos Aires, Argentina
- Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Diego Baldo
- Laboratorio de Genética Evolutiva "Claudio J. Bidau", Instituto de Biología Subtropical (CONICET-UNaM), Facultad de Ciencias Exactas, Químicas y Naturales, Universidad Nacional de Misiones, Posadas, Misiones, Argentina
- * E-mail: (JMF); (DB)
| | - Julio C. Pieczarka
- Laboratório de Citogenética, Centro de Estudos Avançados da Biodiversidade, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Pará, Brasil
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11
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Quercia CA, Suárez-Villota EY, Foresti F, Nuñez JJ. Comparative cytogenetics of the ground frogs Eupsophus emiliopugini Formas, 1989 and E. vertebralis Grandison, 1961 (Alsodidae) with comments on their inter- and intraspecific chromosome differentiation. COMPARATIVE CYTOGENETICS 2020; 14:61-74. [PMID: 32042378 PMCID: PMC6997241 DOI: 10.3897/compcytogen.v14i1.46852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 12/10/2019] [Indexed: 06/10/2023]
Abstract
South American frogs of the genus Eupsophus Fitzinger, 1843 comprise 10 species. Two of them, Eupsophus vertebralis Grandison, 1961 and E. emiliopugini Formas, 1989 belong to the Eupsophus vertebralis group, exhibiting 2n = 28. Fundamental number differences between these species have been described using conventional chromosome staining of few specimens from only two localities. Here, classical techniques (Giemsa, C-banding, CMA3/DAPI banding, and Ag-NOR staining), and fluorescence in situ hybridization (FISH, with telomeric and 28S ribosomal probes), were applied on individuals of both species collected from 15 localities. We corroborate differences in fundamental numbers (FN) between E. vertebralis and E. emiliopugini through Giemsa staining and C-banding (FN = 54 and 56, respectively). No interstitial fluorescent signals, but clearly stained telomeric regions were detected by FISH using telomeric probe over spreads from both species. FISH with 28S rDNA probes and Ag-NOR staining confirmed the active nucleolus organizer regions signal on pair 5 for both species. Nevertheless, one E. emiliopugini individual from the Puyehue locality exhibited 28S ribosomal signals on pairs 4 and 5. Interestingly, only one chromosome of each pair showed Ag-NOR positive signals, showing a nucleolar dominance pattern. Chromosomal rearrangements, rRNA gene dosage control, mobile NORs elements, and/or species hybridization process could be involved in this interpopulation chromosomal variation.
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Affiliation(s)
- Camila A. Quercia
- Instituto de Ciencias Marinas y Limnólogicas, Universidad Austral de Chile, Edificio Emilio Pugin, Campus Isla Teja S/N, Casilla 567, Valdivia, ChileUniversidad Austral de ChileValdiviaChile
| | - Elkin Y. Suárez-Villota
- Instituto de Ciencias Marinas y Limnólogicas, Universidad Austral de Chile, Edificio Emilio Pugin, Campus Isla Teja S/N, Casilla 567, Valdivia, ChileUniversidad Austral de ChileValdiviaChile
| | - Fausto Foresti
- Departamento de Morfologia, Instituto de Biociências, Universidade Estadual Paulista, Distrito de Rubião Junior, s/n, 18618-970, Botucatu, São Paulo, BrazilUniversidade Estadual PaulistaBotucatuBrazil
| | - José J. Nuñez
- Instituto de Ciencias Marinas y Limnólogicas, Universidad Austral de Chile, Edificio Emilio Pugin, Campus Isla Teja S/N, Casilla 567, Valdivia, ChileUniversidad Austral de ChileValdiviaChile
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12
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Araujo-Vieira K, Blotto BL, Caramaschi U, Haddad CFB, Faivovich J, Grant T. A total evidence analysis of the phylogeny of hatchet-faced treefrogs (Anura: Hylidae: Sphaenorhynchus). Cladistics 2019; 35:469-486. [PMID: 34618945 DOI: 10.1111/cla.12367] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/14/2018] [Indexed: 12/26/2022] Open
Abstract
The Neotropical hylid genus Sphaenorhynchus includes 15 species of small, greenish treefrogs widespread in the Amazon and Orinoco basins, and in the Atlantic Forest of Brazil. Although some studies have addressed the phylogenetic relationships of the genus with other hylids using a few exemplar species, its internal relationships remain poorly understood. In order to test its monophyly and the relationships among its species, we performed a total evidence phylogenetic analysis of sequences of three mitochondrial and three nuclear genes, and 193 phenotypic characters from all species of Sphaenorhynchus. Our results support the monophyly of Sphaenorhynchus with molecular and phenotypic evidence, with S. pauloalvini as the earliest diverging taxon, followed by S. carneus, as the sister taxon of all remaining species of the genus. We recognize three species groups in Sphaenorhynchus (the S. lacteus, S. planicola and S. platycephalus groups), to facilitate its taxonomic study; only three species (S. carneus, S. pauloalvini and S. prasinus) remain unassigned to any group. Sequence data were not available for only two species (S. bromelicola and S. palustris) for which we scored phenotypic data; wildcard behaviour was detected only in S. bromelicola nested inside the S. platycephalus group. On the basis of the resulting phylogenetic hypothesis, we discuss the evolution of oviposition site and a number of phenotypic characters that could be associated with heterochronic events in the evolutionary history of this group.
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Affiliation(s)
- Katyuscia Araujo-Vieira
- División Herpetología, Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"-CONICET, Ángel Gallardo 470, Buenos Aires, C1405DJR, Argentina
| | - Boris L Blotto
- División Herpetología, Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"-CONICET, Ángel Gallardo 470, Buenos Aires, C1405DJR, Argentina.,Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, São Paulo, 05508-090, Brazil
| | - Ulisses Caramaschi
- Departamento de Vertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, São Cristóvão, Rio de Janeiro, Rio de Janeiro, 20940-040, Brazil
| | - Celio F B Haddad
- Departamento de Zoologia and Centro de Aquicultura (CAUNESP), Instituto de Biociências, Universidade Estadual Paulista, Avenida 24A, 1515, Bela Vista, Rio Claro, São Paulo, 13506-900, Brazil
| | - Julián Faivovich
- División Herpetología, Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"-CONICET, Ángel Gallardo 470, Buenos Aires, C1405DJR, Argentina.,Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Taran Grant
- Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, São Paulo, 05508-090, Brazil
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13
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Baldo D, Araujo-Vieira K, Cardozo D, Borteiro C, Leal F, Pereyra MO, Kolenc F, Lyra ML, Garcia PCA, Haddad CFB, Faivovich J. A review of the elusive bicolored iris Snouted Treefrogs (Anura: Hylidae:Scinax uruguayus group). PLoS One 2019; 14:e0222131. [PMID: 31553727 PMCID: PMC6760762 DOI: 10.1371/journal.pone.0222131] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 08/22/2019] [Indexed: 11/18/2022] Open
Abstract
The genus Scinax currently includes more than 120 species, recovered in two major clades, the S. catharinae and the S. ruber clades. The latter comprises 75 species, most of which remain unassigned to any species groups, while 12 are included in the S. rostratus and S. uruguayus groups. In this paper we present a taxonomic review of the two species currently included in the S. uruguayus group, discussing some putative phenotypic synapomorphies of this group. Although S. pinima and S. uruguayus have been considered as distinct species, this has been based on scant evidence, and several authors doubted of their distinctiveness. Our study of available specimens of S. pinima and S. uruguayus corroborates that both are valid and diagnosable species based on phenotypic evidence. Furthermore, our results show that S. pinima previously known only from its type locality, has a much widespread distribution than previously thought (including the Brazilian states of Paraná, Santa Catarina, and Rio Grande do Sul), which, added to the biological information presented here allows to suggest the removal of this species from the "Data Deficient" IUCN Red List category to "Least Concern". Also, we describe a new species formerly reported as S. aff. pinima and S. uruguayus from NE Argentina and some localities from the Brazilian State of Rio Grande do Sul. All species are diagnosed and characterized using adult and larval morphology, osteology, vocalizations, cytogenetics, and natural history.
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Affiliation(s)
- Diego Baldo
- Laboratório de Genética Evolutiva, Instituto de Biología Subtropical “Claudio Juan Bidau” (CONICET-UNaM), Posadas, Misiones, Argentina
| | - Katyuscia Araujo-Vieira
- División Herpetología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”—CONICET, Buenos Aires, Argentina
| | - Dario Cardozo
- Laboratório de Genética Evolutiva, Instituto de Biología Subtropical “Claudio Juan Bidau” (CONICET-UNaM), Posadas, Misiones, Argentina
| | - Claudio Borteiro
- Sección Herpetología, Museo Nacional de Historia Natural, Montevideo, Uruguay
| | - Fernando Leal
- Laboratório de Herpetologia, Departamento de Zoologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Martín O. Pereyra
- División Herpetología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”—CONICET, Buenos Aires, Argentina
| | - Francisco Kolenc
- Sección Herpetología, Museo Nacional de Historia Natural, Montevideo, Uruguay
| | - Mariana L. Lyra
- Departamento de Zoologia and Centro de Aquicultura (CAUNESP), Instituto de Biociências, Universidade Estadual Paulista, Rio Claro, São Paulo, Brazil
| | - Paulo C. A. Garcia
- Laboratório de Herpetologia, Departamento de Zoologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Célio F. B. Haddad
- Departamento de Zoologia and Centro de Aquicultura (CAUNESP), Instituto de Biociências, Universidade Estadual Paulista, Rio Claro, São Paulo, Brazil
| | - Julián Faivovich
- División Herpetología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”—CONICET, Buenos Aires, Argentina
- Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
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14
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Dias PHS, Araujo-Vieira K, de Carvalho-e-Silva AMPT, Orrico VGD. Larval anatomy of Dendropsophus decipiens (A. Lutz 1925) (Anura: Hylidae: Dendropsophini) with considerations to larvae of this genus. PLoS One 2019; 14:e0219716. [PMID: 31295323 PMCID: PMC6623958 DOI: 10.1371/journal.pone.0219716] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Accepted: 06/28/2019] [Indexed: 11/18/2022] Open
Abstract
The Dendropsophus decipiens clade comprises four species: D. berthalutzae, D. decipiens, D. haddadi, and D. oliveirai. Tadpoles of these species were described, but data on their internal morphology are lacking. We provide the first description of the buccopharyngeal anatomy, chondrocranial morphology, and cranial, hyoid and hyobranchial musculature of the tadpole of D. decipiens. Larvae of D. decipiens are characterized by the absence of lingual papillae, presence of fan-like papilla on the buccal floor, presence of a single-element suprarostral cartilage, presence of a small triangular process at the basis of the processus muscularis, m. levator mandibulae lateralis inserted on the nasal sac, and m. subarcualis rectus II-IV with a single, continuous slip. Tadpoles are likely macrophagous, although not as specialized as those of other species of the genus, suggesting some degree of diversification on the feeding habits within Dendropsophus.
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Affiliation(s)
- Pedro H. S. Dias
- Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, São Paulo, Brazil
| | - Katyuscia Araujo-Vieira
- División Herpetología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia” – Conicet, Buenos Aires, Argentina
| | - Ana Maria P. T. de Carvalho-e-Silva
- Laboratório de Biossistemática de Anfíbios, Departamento de Zoologia, Universidade Federal do Estado do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Victor G. D. Orrico
- Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Salobrinho, Ilhéus, Bahia, Brazil
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15
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Bruschi DP, Sousa DY, Soares A, de Carvalho KA, Busin CS, Ficanha NC, Lima AP, Andrade GV, Recco-Pimentel SM. Comparative cytogenetics of nine populations of the Rhinella genus (Anura, Bufonidae) with a highlight on their conservative karyotype. Genet Mol Biol 2019; 42:445-451. [PMID: 31259364 PMCID: PMC6726150 DOI: 10.1590/1678-4685-gmb-2018-0139] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 07/17/2018] [Indexed: 11/21/2022] Open
Abstract
The genus Rhinella is one of the most diverse groups of bufonid toads, currently composed by 93 valid species and naturally distributed throughout different Neotropical ecoregions. Here, we analyze nine Brazilian populations of toads representing species of the Rhinella margaritifera and Rhinella marina groups. These new data include the first description of the R. hoogmoedi and R. proboscidae karyotypes, as well as other taxonomically unresolved forms. Chromosomal analysis of the populations revealed pronounced chromosomal uniformity (2n=22), including the diploid number and chromosomal morphology. Three different NOR-bearing chromosomes were identified: in the subterminal region of pair 10q in R. hoogmoedi, Rhinella sp. 1 and Rhinella sp. 2, in subterminal region of 7p in R. proboscidae and Rhinella cf. margaritifera while in R. henseli and R. icterica was detected in interstitial region of 7p. Karyotypic uniformity of the genus permits the inference of interspecific chromosome homologies and evolutionary changes in the NOR-bearing chromosome may represent an informative character in species group level. The review of the cytogenetic data of the Rhinella species together with the new karyotypes reported here contributes to the understanding of the chromosomal evolution of these toads, which karyotypes are highly conserved despite the ample distribution of many forms.
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Affiliation(s)
- Daniel Pacheco Bruschi
- Departamento de Genética, Setor de Ciências Biológicas,
Universidade Federal do Paraná (UFPR), Curitiba, PR, Brazil
- Departamento de Biologia Estrutural e Funcional, Instituto de
Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP,
Brazil
| | - Deborah Yasmim Sousa
- Departamento de Genética, Setor de Ciências Biológicas,
Universidade Federal do Paraná (UFPR), Curitiba, PR, Brazil
| | - Amanda Soares
- Departamento de Genética, Setor de Ciências Biológicas,
Universidade Federal do Paraná (UFPR), Curitiba, PR, Brazil
| | - Klélia Aparecida de Carvalho
- Departamento de Genética e Evolução, Microbiologia e
Imunologia, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP),
Campinas, SP, Brazil
| | - Carmen Sílvia Busin
- Instituto de Ciências Biológicas, Programa de Pós-Graduação em
Ciências Ambientais (PPGCiAmb), Universidade de Passo Fundo (UPF), Passo Fundo,
RS, Brazil
| | - Natália Cristine Ficanha
- Instituto de Ciências Biológicas, Programa de Pós-Graduação em
Ciências Ambientais (PPGCiAmb), Universidade de Passo Fundo (UPF), Passo Fundo,
RS, Brazil
| | | | - Gilda Vasconcellos Andrade
- Departamento de Biologia, Centro de Ciências Biológicas e da
Saúde, Universidade Federal do Maranhão (UFMA), São Luís, MA, Brazil
| | - Shirlei Maria Recco-Pimentel
- Departamento de Biologia Estrutural e Funcional, Instituto de
Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP,
Brazil
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16
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Targueta CP, Guerra V, Gambale PG, Bastos RP, Silva DDME, Telles MPDC. Cytogenetics of two hylid frogs from Brazilian Cerrado. Genet Mol Biol 2018; 41:814-819. [PMID: 30508007 PMCID: PMC6415605 DOI: 10.1590/1678-4685-gmb-2017-0382] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Accepted: 04/10/2018] [Indexed: 11/22/2022] Open
Abstract
Cytogenetic data can be useful for taxonomic and phylogenetic studies, as well as to provide information about chromosome evolution. Therefore, it may help design conservation priorities for some threatened species, such as anurans. Herein, we describe the karyotypes of Scinax constrictus and Ololygon centralis, native endemic species from the Brazilian Cerrado. Chromosome preparations for both species were stained with Giemsa for morphological analyses and then impregnated by the Ag-NOR method for localization of the nucleolar organizer region (NOR). Both species had 24 chromosomes, as confirmed by meiotic analyses, which showed 12 bivalents. Chromosome morphologies presented the same pattern for Scinax and Ololygon compared to species already karyotyped in both genera. The NOR was interstitially located in the long arm of pair 7 in S. constrictus, whereas in O. centralis it was found near the centromere in the long arm of pair 1, thus diverging from what is commonly found for other Ololygon species. Therefore, we provide the first description of the karyotype of O. centralis and the first report of the localization of the NOR for the karyotype of both species. Our study increases the cytogenetic knowledge in species of the genera Scinax and Ololygon, and provide support for further studies on the taxonomy, ecology, and evolution of hylid anurans.
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Affiliation(s)
- Cíntia Pelegrineti Targueta
- Laboratório de Genética & Biodiversidade, Departamento de Genética, Instituto de Ciências Biológicas, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Vinícius Guerra
- Programa de Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais, Universidade Estadual de Maringá, Maringá, PR, Brazil
| | - Priscilla Guedes Gambale
- Programa de Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais, Universidade Estadual de Maringá, Maringá, PR, Brazil
| | - Rogério Pereira Bastos
- Departamento de Ecologia, Instituto de Ciências Biológicas, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Daniela de Melo e Silva
- Laboratório de Mutagênese, Departamento de Genética, Instituto de Ciências Biológicas, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Mariana Pires de Campos Telles
- Laboratório de Genética & Biodiversidade, Departamento de Genética, Instituto de Ciências Biológicas, Universidade Federal de Goiás, Goiânia, GO, Brazil
- Escola de Ciências Agrárias e Biológicas, Pontifícia Universidade Católica de Goiás, Goiânia, GO, Brazil
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17
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Gatto KP, Mattos JV, Seger KR, Lourenço LB. Sex Chromosome Differentiation in the Frog Genus Pseudis Involves Satellite DNA and Chromosome Rearrangements. Front Genet 2018; 9:301. [PMID: 30147705 PMCID: PMC6096759 DOI: 10.3389/fgene.2018.00301] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 07/17/2018] [Indexed: 01/19/2023] Open
Abstract
The genus Pseudis comprises six frogs of the family Hylidae and only P. tocantins had heteromorphic sex chromosomes detected by classical cytogenetics. In this species, the W chromosome is larger than the Z chromosome and has a large heterochromatic block located between the centromere and the nucleolus organizer region (NOR) in the long arm. This large heterochromatic band is enriched for the PcP190 satellite DNA (satDNA), whereas the Z chromosome bears a smaller C-band adjacent to the centromere in the long arm that is not detected by PcP190 probes. To assess sex chromosome differentiation in the genus Pseudis, we investigated the PcP190 satDNA in P. bolbodactyla, P. cardosoi, P. minuta, and P. paradoxa and in one species of Lysapsus, which is the sister genus of Pseudis. PcP190 sequences were isolated, sequenced, and the diversity of this class of satDNA was analyzed. To evaluate whether sex-related variations in PcP190 satDNA were present, we used in situ hybridization (for P. bolbodactyla, P. paradoxa, P. cardosoi, and P. minuta) and Southern blotting analysis (for all species). We found a low level of sex chromosome heteromorphism in P. bolbodactyla, as a PcP190 cluster was detected in the short arm of one of the homologs of pair 7 exclusively in females. In P. paradoxa, P. minuta, and P. cardosoi, PcP190 satDNA is not sex-related, although a cluster of PcP190 sequences could be recognized in the NOR-bearing chromosomes 7 of P. paradoxa and P. minuta and their homologous chromosome 5 of P. cardosoi. By tracking cytogenetic data in a species tree, we may hypothesize that the positioning of the PcP190 site adjacently to the NOR (as observed in the long arm of the W chromosome of P. tocantins) is a derived condition with respect to the location of the PcP190 site apart from the NOR, in the short arm of the NOR-bearing chromosomes 7 (as present in P. bolbodactyla, P. paradoxa, and P. minuta) or 5 (as present in P. cardosoi) and we discuss about the emergence of PcP190 satDNA as a sex-related trait.
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Affiliation(s)
- Kaleb P Gatto
- Laboratory of Chromosome Studies, Department of Structural and Functional Biology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - João V Mattos
- Laboratory of Chromosome Studies, Department of Structural and Functional Biology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - Karin R Seger
- Laboratory of Chromosome Studies, Department of Structural and Functional Biology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - Luciana B Lourenço
- Laboratory of Chromosome Studies, Department of Structural and Functional Biology, Institute of Biology, University of Campinas, Campinas, Brazil
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18
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Cavalcante MG, Bastos CEMC, Nagamachi CY, Pieczarka JC, Vicari MR, Noronha RCR. Physical mapping of repetitive DNA suggests 2n reduction in Amazon turtles Podocnemis (Testudines: Podocnemididae). PLoS One 2018; 13:e0197536. [PMID: 29813087 PMCID: PMC5973585 DOI: 10.1371/journal.pone.0197536] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 05/03/2018] [Indexed: 01/27/2023] Open
Abstract
Cytogenetic studies show that there is great karyotypic diversity in order Testudines (2n = 26-68), and that this may be mainly attributed to the presence/absence of microchromosomes. Members of the Podocnemididae family have the smallest diploid numbers of this order (2n = 26-28), which may be a derived condition of the group. Diverse studies suggest that repetitive-DNA-rich sites generally act as hotspots for double-strand breaks and chromosomal reorganization. In this context, we used fluorescent in situ hybridization (FISH) to map telomeric sequences (TTAGGG)n, 45S rDNA, and the genes encoding histones H1 and H3 in two species of genus Podocnemis. We also observed conservation of the 45S rDNA and H1 histone sequences (probable case of conserved synteny), but multiple conserved and non-conserved clusters of H3 genes, which colocalized with the interstitial telomeric sequences in the Podocnemis genome. Our results suggest that fusions have occurred between macro and microchromosomes or between microchromosomes, leading to the observed reduction in diploid number in the family Podocnemididae.
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Affiliation(s)
- Manoella Gemaque Cavalcante
- Centro de Estudos Avançados da Biodiversidade, Laboratório de Citogenética, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Pará, Brasil
| | - Carlos Eduardo Matos Carvalho Bastos
- Centro de Estudos Avançados da Biodiversidade, Laboratório de Citogenética, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Pará, Brasil
| | - Cleusa Yoshiko Nagamachi
- Centro de Estudos Avançados da Biodiversidade, Laboratório de Citogenética, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Pará, Brasil
| | - Julio Cesar Pieczarka
- Centro de Estudos Avançados da Biodiversidade, Laboratório de Citogenética, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Pará, Brasil
| | - Marcelo Ricardo Vicari
- Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Ponta Grossa, Paraná, Brasil
| | - Renata Coelho Rodrigues Noronha
- Centro de Estudos Avançados da Biodiversidade, Laboratório de Citogenética, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Pará, Brasil
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19
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Ferro JM, Cardozo DE, Suárez P, Boeris JM, Blasco-Zúñiga A, Barbero G, Gomes A, Gazoni T, Costa W, Nagamachi CY, Rivera M, Parise-Maltempi PP, Wiley JE, Pieczarka JC, Haddad CFB, Faivovich J, Baldo D. Chromosome evolution in Cophomantini (Amphibia, Anura, Hylinae). PLoS One 2018; 13:e0192861. [PMID: 29444174 PMCID: PMC5812657 DOI: 10.1371/journal.pone.0192861] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Accepted: 01/31/2018] [Indexed: 11/18/2022] Open
Abstract
The hylid tribe Cophomantini is a diverse clade of Neotropical treefrogs composed of the genera Aplastodiscus, Boana, Bokermannohyla, Hyloscirtus, and Myersiohyla. The phylogenetic relationships of Cophomantini have been comprehensively reviewed in the literature, providing a suitable framework for the study of chromosome evolution. Employing different banding techniques, we studied the chromosomes of 25 species of Boana and 3 of Hyloscirtus; thus providing, for the first time, data for Hyloscirtus and for 15 species of Boana. Most species showed karyotypes with 2n = 2x = 24 chromosomes; some species of the B. albopunctata group have 2n = 2x = 22, and H. alytolylax has 2n = 2x = 20. Karyotypes are all bi-armed in most species presented, with the exception of H. larinopygion (FN = 46) and H. alytolylax (FN = 38), with karyotypes that have a single pair of small telocentric chromosomes. In most species of Boana, NORs are observed in a single pair of chromosomes, mostly in the small chromosomes, although in some species of the B. albopunctata, B. pulchella, and B. semilineata groups, this marker occurs on the larger pairs 8, 1, and 7, respectively. In Hyloscirtus, NOR position differs in the three studied species: H. alytolylax (4p), H. palmeri (4q), and H. larinopygion (1p). Heterochromatin is a variable marker that could provide valuable evidence, but it would be necesserary to understand the molecular composition of the C-bands that are observed in different species in order to test its putative homology. In H. alytolylax, a centromeric DAPI+ band was observed on one homologue of chromosome pair 2. The band was present in males but absent in females, providing evidence for an XX/XY sex determining system in this species. We review and discuss the importance of the different chromosome markers (NOR position, C-bands, and DAPI/CMA3 patterns) for their impact on the taxonomy and karyotype evolution in Cophomantini.
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Affiliation(s)
- Juan M. Ferro
- Laboratorio de Genética Evolutiva, Instituto de Biología Subtropical (CONICET-UNaM), Facultad de Ciencias Exactas Químicas y Naturales, Universidad Nacional de Misiones, Posadas, Misiones, Argentina
| | - Dario E. Cardozo
- Laboratorio de Genética Evolutiva, Instituto de Biología Subtropical (CONICET-UNaM), Facultad de Ciencias Exactas Químicas y Naturales, Universidad Nacional de Misiones, Posadas, Misiones, Argentina
| | - Pablo Suárez
- Instituto de Biología Subtropical (CONICET-UNaM), Puerto Iguazú, Misiones, Argentina
| | - Juan M. Boeris
- Laboratorio de Genética Evolutiva, Instituto de Biología Subtropical (CONICET-UNaM), Facultad de Ciencias Exactas Químicas y Naturales, Universidad Nacional de Misiones, Posadas, Misiones, Argentina
| | - Ailin Blasco-Zúñiga
- Laboratorio de Investigación en Citogenética y Biomoléculas de Anfibios (LICBA), Centro de Investigación para la Salud en América Latina (CISeAL), Pontificia Universidad Católica del Ecuador, Quito, Ecuador
| | - Gastón Barbero
- Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y Diagnóstico, Universidad Maimónides, CONICET, Buenos Aires, Argentina
| | - Anderson Gomes
- Instituto Federal de Educação, Ciência e Tecnologia do Pará, Abaetetuba, Pará, Brazil
| | - Thiago Gazoni
- Departamento de Biologia, Instituto de Biociências, UNESP – Univ. Estadual Paulista, Campus de Rio Claro, São Paulo, Brasil
| | - William Costa
- Departamento de Biologia Estrutural e Funcional, Instituto de Biologia, UNICAMP – Univ. Estadual de Campinas, Campinas, Brasil
| | - Cleusa Y. Nagamachi
- Laboratório de Citogenética, Centro de Estudos Avançados da Biodiversidade, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Pará, Brasil
| | - Miryan Rivera
- Laboratorio de Investigación en Citogenética y Biomoléculas de Anfibios (LICBA), Centro de Investigación para la Salud en América Latina (CISeAL), Pontificia Universidad Católica del Ecuador, Quito, Ecuador
| | - Patricia P. Parise-Maltempi
- Departamento de Biologia, Instituto de Biociências, UNESP – Univ. Estadual Paulista, Campus de Rio Claro, São Paulo, Brasil
| | - John E. Wiley
- The Brody School of Medicine, East Carolina University, Greenville, North Carolina, United States of America
| | - Julio C. Pieczarka
- Laboratório de Citogenética, Centro de Estudos Avançados da Biodiversidade, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Pará, Brasil
| | - Celio F. B. Haddad
- Departamento de Zoologia e Centro de Aquicultura, Instituto de Biociências, UNESP – Univ. Estadual Paulista, Campus de Rio Claro, São Paulo, Brasil
| | - Julián Faivovich
- División Herpetología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”—CONICET, Buenos Aires, Argentina
- Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Diego Baldo
- Laboratorio de Genética Evolutiva, Instituto de Biología Subtropical (CONICET-UNaM), Facultad de Ciencias Exactas Químicas y Naturales, Universidad Nacional de Misiones, Posadas, Misiones, Argentina
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Teixeira LSR, Seger KR, Targueta CP, Orrico VGD, Lourenço LB. Comparative cytogenetics of tree frogs of the Dendropsophus marmoratus (Laurenti, 1768) group: conserved karyotypes and interstitial telomeric sequences. COMPARATIVE CYTOGENETICS 2016; 10:753-767. [PMID: 28123692 PMCID: PMC5240522 DOI: 10.3897/compcytogen.v10i4.9972] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 11/04/2016] [Indexed: 06/06/2023]
Abstract
The diploid number 2n = 30 is a presumed synapomorphy of Dendropsophus Fitzinger, 1843, although a noticeable variation in the number of biarmed/telocentric chromosomes is observed in this genus. Such a variation suggests that several chromosomal rearrangements took place after the evolutionary origin of the hypothetical ancestral 30-chromosome karyotype; however, the inferred rearrangements remain unknown. Distinct numbers of telocentric chromosomes are found in the two most cytogenetically studied species groups of Dendropsophus. In contrast, all three species of the Dendropsophus marmoratus (Laurenti, 1768) group that are already karyotyped presented five pairs of telocentric chromosomes. In this study, we analyzed cytogenetically three additional species of this group to investigate if the number of telocentric chromosomes in this group is not as variable as in other Dendropsophus groups. We described the karyotypes of Dendropsophus seniculus (Cope, 1868), Dendropsophus soaresi (Caramaschi & Jim, 1983) and Dendropsophus novaisi (Bokermann, 1968) based on Giemsa staining, C-banding, silver impregnation and in situ hybridization with telomeric probes. Dendropsophus seniculus, Dendropsophus soaresi and Dendropsophus novaisi presented five pairs of telocentric chromosomes, as did the remaining species of the group previously karyotyped. Though the species of this group show a high degree of karyotypic similarity, Dendropsophus soaresi was unique in presenting large blocks of het-ITSs (heterochromatic internal telomeric sequences) in the majority of the centromeres. Although the ITSs have been interpreted as evidence of ancestral chromosomal fusions and inversions, the het-ITSs detected in the karyotype of Dendropsophus soaresi could not be explained as direct remnants of ancestral chromosomal rearrangements because no evidence of chromosomal changes emerged from the comparison of the karyotypes of all of the species of the Dendropsophus marmoratus group.
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Affiliation(s)
- Lívia S. R. Teixeira
- Departamento de Biologia Estrutural e Funcional, Instituto de Biologia, Universidade Estadual de Campinas, 13083-863 Campinas, São Paulo, Brasil
| | - Karin Regina Seger
- Departamento de Biologia Estrutural e Funcional, Instituto de Biologia, Universidade Estadual de Campinas, 13083-863 Campinas, São Paulo, Brasil
| | - Cíntia Pelegrineti Targueta
- Departamento de Biologia Estrutural e Funcional, Instituto de Biologia, Universidade Estadual de Campinas, 13083-863 Campinas, São Paulo, Brasil
| | - Victor G. Dill Orrico
- Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, 45662-900 Ilhéus, Bahia, Brasil
| | - Luciana Bolsoni Lourenço
- Departamento de Biologia Estrutural e Funcional, Instituto de Biologia, Universidade Estadual de Campinas, 13083-863 Campinas, São Paulo, Brasil
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Peixoto MAA, Oliveira MPC, Feio RN, Dergam JA. Karyological study of Ololygon tripui (Lourenço, Nascimento and Pires, 2009), (Anura, Hylidae) with comments on chromosomal traits among populations. COMPARATIVE CYTOGENETICS 2016; 10:505-516. [PMID: 28123674 PMCID: PMC5240505 DOI: 10.3897/compcytogen.v10i4.9176] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 07/30/2016] [Indexed: 06/06/2023]
Abstract
To increase the number of cytogenetic characters used in Ololygon tripui systematics, we applied some cytogenetic techniques such as Giemsa, C- and NOR-banding, and fluorescence in situ hybridization (FISH) with 18S rDNA and repetitive microsatellite DNA probes to the study of four populations from Minas Gerais State (southeastern Brazil). All populations showed 2n = 24 and FN = 48, and chromosomal formula 8m + 10sm + 6st. Nucleolar organizing regions (NORs) were located on chromosome pair 6 in all populations, although in the Tripuí locality additional markings were observed on one homologue of chromosome pair 3. These patterns were partially congruent with results obtained using the 18S rDNA FISH probe. The microsatellites repetitive DNA (GA)15 and (CAT)10 probes accumulated predominantly in the terminal region of all chromosomes. Chromosome morphology and Ag-NOR were conserved among populations, a conserved pattern in Ololygon Fitzinger, 1843. Repetitive DNA FISH probes patterns were similar among populations, but they revealed species-specific differences when compared with other species of the genus Ololygon, suggesting that molecular cytogenetics are potentially more informative in karyologically conservative taxa.
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Affiliation(s)
- Marco Antônio A. Peixoto
- Laboratório de Sistemática Molecular - Beagle, Departamento de Biologia Animal, Universidade Federal de Viçosa, CEP 36570-900, Viçosa, Minas Gerais State, Brazil
- Museu de Zoologia João Moojen - MZUFV, Departamento de Biologia Animal, Universidade Federal de Viçosa, CEP 36570-900, Viçosa, Minas Gerais State, Brazil
| | - Marina P. C. Oliveira
- Laboratório de Sistemática Molecular - Beagle, Departamento de Biologia Animal, Universidade Federal de Viçosa, CEP 36570-900, Viçosa, Minas Gerais State, Brazil
| | - Renato N. Feio
- Museu de Zoologia João Moojen - MZUFV, Departamento de Biologia Animal, Universidade Federal de Viçosa, CEP 36570-900, Viçosa, Minas Gerais State, Brazil
| | - Jorge A. Dergam
- Laboratório de Sistemática Molecular - Beagle, Departamento de Biologia Animal, Universidade Federal de Viçosa, CEP 36570-900, Viçosa, Minas Gerais State, Brazil
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Comparative cytogenetic analysis of four species of Dendropsophus (Hylinae) from the Brazilian Atlantic forest. J Genet 2016; 95:349-55. [PMID: 27350679 DOI: 10.1007/s12041-016-0645-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
We conducted a cytogenetic study of four hyline frog species (Dendropsophus elegans, D. microps, D. minutus and D. werneri) from southern Brazil. All species had 2n = 30 chromosomes, with interspecific and intraspecific variation in the numbers of metacentric, submetacentric, subtelocentric and telocentric chromosomes. C-banding and fluorochrome staining revealed conservative GC-rich heterochromatin localized in the pericentromeric regions of all species. The location of the nucleolus organizer regions, as confirmed by fluorescent in situ hybridization, differed between species. Telomeric probes detected sites that were restricted to the terminal regions of all chromosomes and no interstitial or centromeric signals were observed. Our study corroborates the generic synapomorphy of 2n = 30 chromosomes for Dendropsophus and adds data that may become useful for future taxonomic revisions and a broader understanding of chromosomal evolution among hylids.
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Schmid M, Steinlein C. Chromosome Banding in Amphibia. XXXIV. Intrachromosomal Telomeric DNA Sequences in Anura. Cytogenet Genome Res 2016; 148:211-26. [PMID: 27233250 DOI: 10.1159/000446298] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/14/2016] [Indexed: 11/19/2022] Open
Abstract
The mitotic chromosomes of 4 anuran species were examined by various classical banding techniques and by fluorescence in situ hybridization using a (TTAGGG)n repeat. Large intrachromosomal telomeric sequences (ITSs) were demonstrated in differing numbers and chromosome locations. A detailed comparison of the present results with numerous published and unpublished data allowed a consistent classification of the various categories of large ITSs present in the genomes of anurans and other vertebrates. The classification takes into consideration the total numbers of large ITSs in the karyotypes, their chromosomal locations and their specific distribution patterns. A new category of large ITSs was recognized to exist in anuran species. It consists of large clusters of ITSs located in euchromatic chromosome segments, which is in clear contrast to the large ITSs in heterochromatic chromosome regions known in vertebrates. The origin of the different categories of large ITSs in heterochromatic and euchromatic chromosome regions, their mode of distribution in the karyotypes and evolutionary fixation in the genomes, as well as their cytological detection are discussed.
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Affiliation(s)
- Michael Schmid
- Department of Human Genetics, University of Wx00FC;rzburg, Wx00FC;rzburg, Germany
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Ferro JM, Taffarel A, Cardozo D, Grosso J, Puig MP, Suárez P, Akmentins MS, Baldo D. Cytogenetic characterization and B chromosome diversity in direct-developing frogs of the genus Oreobates (Brachycephaloidea, Craugastoridae). COMPARATIVE CYTOGENETICS 2016; 10:141-56. [PMID: 27186344 PMCID: PMC4856932 DOI: 10.3897/compcytogen.v10i1.5718] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 11/11/2015] [Indexed: 06/05/2023]
Abstract
Oreobates Jiménez de la Espada, 1872 is a large group of South American frogs with terrestrial reproduction and direct development, located in the superfamily Brachycephaloidea. About 260 brachycephaloidean species have been cytogenetically studied so far, at least with standard techniques. However, this information represents fewer than 17% species of the family Craugastoridae Hedges, Duellman & Heinicke, 2008, where the genus Oreobates is included. In the present work, using a diversity of standard and molecular techniques, we describe the karyotype of Oreobates barituensis Vaira & Ferrari, 2008, Oreobates berdemenos Pereyra, Cardozo, Baldo & Baldo, 2014 and Oreobates discoidalis (Peracca, 1895), from northwestern Argentina. The three species analyzed showed a diploid karyotype with 2n = 22 biarmed chromosomes, fundamental number (FN) = 44, nucleolus organizer regions (NORs) located pericentromerically on pair 7, and a centromeric and pericentromeric C-banding pattern. We observed variations in the chromosome number in Oreobates barituensis due the presence of two morphs of B chromosomes, one medium-sized telocentric (BT) and another subtelocentric and smaller (Bst). Both B chromosomes are mitotically stable and were recorded in all somatic and germinal cells analyzed. The BT chromosome occurred at a maximum of one per individual (2n = 22+BT), and the other one was observed single (2n = 22 + Bst) or as a pair in two doses (2n = 22 + 2BT). We additionally observed other supernumerary chromosomes in the three species analyzed, all of them euchromatic, small, dot-shaped and with instability during mitoses, showing a frequency of occurrence below 50% in studied specimens. The occurrence of polymorphic and spontaneous chromosomal rearrangements and supernumerary chromosomes is a recurrent feature reported in frogs with terrestrial habits (Brachycephaloidea and Hemiphractidae Peters, 1862), which suggests that Brachycephaloidea may be a promising group for studying the origin and maintenance of B chromosomes in anurans.
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Affiliation(s)
- Juan Martín Ferro
- Laboratorio de Genética Evolutiva, Instituto de Biología Subtropical (CONICET-UNaM), Facultad de Ciencias Exactas Químicas y Naturales, Universidad Nacional de Misiones; Félix de Azara 1552, CPA N3300LQF Posadas, Argentina
| | - Alberto Taffarel
- Laboratorio de Genética Evolutiva, Instituto de Biología Subtropical (CONICET-UNaM), Facultad de Ciencias Exactas Químicas y Naturales, Universidad Nacional de Misiones; Félix de Azara 1552, CPA N3300LQF Posadas, Argentina
| | - Darío Cardozo
- Laboratorio de Genética Evolutiva, Instituto de Biología Subtropical (CONICET-UNaM), Facultad de Ciencias Exactas Químicas y Naturales, Universidad Nacional de Misiones; Félix de Azara 1552, CPA N3300LQF Posadas, Argentina
| | - Jimena Grosso
- Fundación Miguel Lillo, Instituto de Herpetología; Miguel Lillo 251, CP 4000, San Miguel de Tucumán, Tucumán
| | - María Pía Puig
- Universidad Nacional de Salta (UNSa), Avenida Bolivia 5150, Salta, Argentina
| | - Pablo Suárez
- Laboratório de Citogenética, Instituto de Ciências Biológicas, Universidade Federal do Pará,Tv. Augusto Correia 1, CEP 66075-900, Belém, Pará, Brazil
| | - Mauricio Sebastián Akmentins
- Centro de Investigaciones y Transferencia de Jujuy (CIT-JUJUY), CONICET-UNJu, Av. Bolivia 1711 (4600), San Salvador de Jujuy, Argentina
| | - Diego Baldo
- Laboratorio de Genética Evolutiva, Instituto de Biología Subtropical (CONICET-UNaM), Facultad de Ciencias Exactas Químicas y Naturales, Universidad Nacional de Misiones; Félix de Azara 1552, CPA N3300LQF Posadas, Argentina
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Ferreira RB, Faivovich J, Beard KH, Pombal JP. The First Bromeligenous Species of Dendropsophus (Anura: Hylidae) from Brazil's Atlantic Forest. PLoS One 2015; 10:e0142893. [PMID: 26650515 PMCID: PMC4674083 DOI: 10.1371/journal.pone.0142893] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Accepted: 10/27/2015] [Indexed: 11/18/2022] Open
Abstract
We describe a new treefrog species of Dendropsophus collected on rocky outcrops in the Brazilian Atlantic Forest. Ecologically, the new species can be distinguished from all known congeners by having a larval phase associated with rainwater accumulated in bromeliad phytotelms instead of temporary or lentic water bodies. Phylogenetic analysis based on molecular data confirms that the new species is a member of Dendropsophus; our analysis does not assign it to any recognized species group in the genus. Morphologically, based on comparison with the 96 known congeners, the new species is diagnosed by its small size, framed dorsal color pattern, and short webbing between toes IV-V. The advertisement call is composed of a moderate-pitched two-note call (~5 kHz). The territorial call contains more notes and pulses than the advertisement call. Field observations suggest that this new bromeligenous species uses a variety of bromeliad species to breed in, and may be both territorial and exhibit male parental care.
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Affiliation(s)
- Rodrigo B. Ferreira
- Department of Wildland Resources and Ecology Center, Utah State University, Logan, Utah, United States of America
- Laboratório de Ecologia de Populações e Conservação, Universidade Vila Velha, Vila Velha, Espírito Santo, Brazil
| | - Julián Faivovich
- División Herpetología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”- CONICET, Buenos Aires, Argentina
- Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Karen H. Beard
- Department of Wildland Resources and Ecology Center, Utah State University, Logan, Utah, United States of America
| | - José P. Pombal
- Departamento de Vertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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Bruschi DP, Rivera M, Lima AP, Zúñiga AB, Recco-Pimentel SM. Interstitial Telomeric Sequences (ITS) and major rDNA mapping reveal insights into the karyotypical evolution of Neotropical leaf frogs species (Phyllomedusa, Hylidae, Anura). Mol Cytogenet 2014; 7:22. [PMID: 24602295 PMCID: PMC3975639 DOI: 10.1186/1755-8166-7-22] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Accepted: 02/26/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The combination of classical cytogenetics with molecular techniques represents a powerful approach for the comparative analysis of the genome, providing data for the systematic identification of chromosomal homologies among species and insights into patterns of chromosomal evolution within phylogenetically related groups. Here, we present cytogenetic data on four species of Neotropical treefrogs of the genus Phyllomedusa (P. vaillantii, P. tarsius, P. distincta, and P. bahiana), collected in Brazil and Ecuador, with the aim of contributing to the understanding of the chromosomal diversification of this genus. RESULTS With the exception of P. tarsius, which presented three telocentric pairs, all the species analyzed had conservative karyotypic features. Heterochromatic patterns in the genomes of these species revealed by C-banding and fluorochrome staining indicated the presence of a large number of non-centromeric blocks. Using the Ag-NOR method and FISH with an rDNA 28S probe, we detected NOR in the pericentromeric region of the short arm of pair 7 in P. vaillantii, pair 1 in P. tarsius, chromosomes 1 and 9 in P. distincta, and in chromosome 9 in P. bahiana, in addition to the presence of NOR in one homologue of chromosome pair 10 in some individuals of this species. As expected, the telomeric probe detected the terminal regions of the chromosomes of these four species, although it also detected Interstitial Telomeric Sequences (ITS) in some chromosomes of the P. vaillantii, P. distincta and P. bahiana karyotypes. CONCLUSION A number of conservative chromosomal structures permitted the recognition of karyotypic homologies. The data indicate that the presence of a NOR-bearing chromosome in pair 9 is the plesiomorphic condition in the P. burmeisteri group. The interspecific and intraspecific variation in the number and location of rDNA sites reflects the rapid rate of evolution of this character in Phyllomedusa. The ITS detected in this study does not appear to be a remnant of structural chromosome rearrangements. Telomeric repeats were frequently found in association with heterochromatin regions, primarily in the centromeres, which suggests that (TTAGGG)n repeats might be an important component of this heterochromatin. We propose that the ITSs originated independently during the chromosomal evolution of these species and may provide important insights into the role of these repeats in vertebrate karyotype diversification.
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Affiliation(s)
- Daniel Pacheco Bruschi
- Departamento de Biologia Estrutural e Funcional, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), 13083-863 Campinas, São Paulo, Brazil
| | - Miryan Rivera
- Escuela de Ciencias Biológicas, Pontifícia Universidad Católica Del Ecuador, Quito, Ecuador
| | | | - Ailín Blasco Zúñiga
- Escuela de Ciencias Biológicas, Pontifícia Universidad Católica Del Ecuador, Quito, Ecuador
| | - Shirlei Maria Recco-Pimentel
- Departamento de Biologia Estrutural e Funcional, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), 13083-863 Campinas, São Paulo, Brazil
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