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Registros recuperados: 70
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A case of leucism in the burrowing owl Athene cunicularia (Aves: Strigiformes) with confirmation of species identity using cytogenetic analysis Rev. Bras. Zool.
Nogueira,Denise M; Alves,Maria Alice S.
Leucism is an inherited disorder, characterized by the lack of pigments in part or all of the body, normal coloration of the eyes and, in birds, in naked parts such as the bill and legs. This kind of disorder is sometimes erroneously designated as albinism or partial albinism. In this study, we present a case of leucism in a wild owl. The studied individual presented completely white plumage, light-yellow coloration of legs and bill and normal coloration of eyes. According to morphological features, this owl is a specimen of burrowing owl, Athene cunicularia (Molina, 1782). To confirm the species identity, we used cytogenetic analyses for karyotypic determination, comparing it to the previously described one in the literature. We also studied a captive...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aberrant plumage; Bird; Chromosomes; Karyotype.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000100008
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A new species of Telmatobufo (Schmidt 1852) (Anura, Calyptocephalellidae) from a remnant of the Maulino Forest, central Chile Gayana
Cuevas,César C.
A new species, Telmatobufo ignotus, from the Reserva Nacional Los Queules, Cauquenes Province, central Chile is described herein. The new taxon is hypothesized based on a new combination of adult, larval, and chromosomal characters. The new species present the more septentrional distribution on the coastal range and a very restrictive distribution area compared to its congeners; because of this, taxonomic and conservation comments are discussed and advanced.
Tipo: Journal article Palavras-chave: New species; Anura; Telmatobufo; Morphology; Chromosomes; Central Chile.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382010000200004
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Aderência cromossômica em Paspalum sp.(Acesso BRA-014176). Repositório Alice
FREITAS, P. M. de; ADAMOWSKI, E. de V.; PAGLIARINI, M. S.; BATISTA, L. A. R..
1997
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Paspalum; Aderência cromossômica; Chromosomes.
Ano: 1997 URL: http://www.alice.cnptia.embrapa.br/handle/doc/44165
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Chromosomal distribution and evolution of abundant retrotransposons in plants: gypsy elements in diploid and polyploid Brachiaria forage grasses. Repositório Alice
SANTOS, F. C.; VALLE, C. B. do; CHIARI, L..
2015
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Centromeres; Retrotransposons; FISH; In situ hybridization; Metaviridae; Grasses; Genomics; Genome organization; Transposons; Transposable elements; Genetics; Repetitive DNA; Chromosomes.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1040145
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Chromosomal location of isozyme loci with primary trisomics in rice International Rice Research Institute
Wu, Kunsheng.
82 l. : ill. Thesis (M.S.) -- University of the Philippines at Los Baños
Tipo: Thesis Palavras-chave: Rice; Chromosomes; Isozymes; Loci; Trisomics; Plant genetics.
Ano: 1987 URL: http://hdl.handle.net/123456789/1257
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Chromosome studies of Brazilian vespertilionids Lasiurus cinereus and Lasiurus ega (Mammalia, Chiroptera) Iheringia, Sér. Zool.
Marchesin,Sandra Regina de Carvalho; Versute,Eliana Morielle.
Cytogenetical studies based on conventional coloration by Giemsa, C-banding and Ag-NOR were performed on 2 species of bats from the vespertilionid family: Lasiurus cinereus (Beauvois, 1796) and Lasiurus ega (Gervais, 1856). The 2n was 28 and FN was 48 in both species. The constitutive heterochromatin is located in centromeric regions in the two species and in the short arm of the subtelocentric X chromosome in L. ega. NORs were observed in the secondary constriction of the smaller autosome in both species.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chiroptera; Chromosomes; Lasiurus; C-banding; NORs.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212004000400016
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Chromosome study of Anteaters (Myrmecophagideae, Xenarthra): a preliminary report Genet. Mol. Biol.
Pereira Júnior,Hélio Rubens Jacintho; Jorge,Wilham; Costa,Maria Elvira Loyola Teixeira da.
Anteaters belong to the Order Xenarthra / Family Myrmecophagidae and are the only members without teeth. There are three genera with four living species in the family Myrmecophagidae: Myrmecophaga tridactyla (giant anteater), Tamandua tetradactyla (southern lesser anteater), Tamandua mexicana (northern lesser anteater), and Cyclopes didactylus (silky anteater). The karyotypes of M. tridactyla (2n = 60), T. tetradactyla (2n = 54) and C. didactylus (2n = 64) have already been described. In the present paper, three female and two male specimens of giant anteater and one lesser anteater male were analyzed. The results indicate the existence of a new karyotype in the genus Tamandua, with 2n = 56 chromosomes, which can represent a new lesser anteater species....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anteater; Chromosomes; Myrmecophagidae.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572004000300014
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CHROMOSOMES AND Ag-NOR LOCATION IN FLUVIATE POPULATIONS OF SALMO TRUTTA FARIO L. 1758 (SALMONIFORMES: SALMONIDAE) FROM ATACAMA DESERT, CHILE Gayana
Northland-Leppe,Irma; Lam,Natalia; Jara-Seguel,Pedro; Capetillo-Arcos,Juana.
Salmo trutta fario L. 1758, presented a chromosome number 2n = 80 and a fundamental number NF = 100. Thehaploid chromosome set consists of seven metacentric chromosomes, three submetacentric, one subtelocentric and 29 telocentrics. The Ag-NOR are located at conserved position in the short arm of pair 11 (st), with the presence of additional NOR on the short arm of pair 9 (sm) which is rare in others taxa previously studied.
Tipo: Journal article Palavras-chave: Salmo truttafario; Chromosomes; Atacama region; Chile.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382009000100007
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Citogenética de jumentos da raça Marchadora Brasileira. Repositório Alice
PEREIRA, M.L.; LUI, J.F.; OLIVEIRA, J.V. de.
Jumentos da raça Marchadora Brasileira foram cariotipados e bandeados com C, G e NOR, sendo 2n = 62 e NF = 107. O trabalho visou a contribuir com a cariotipagem da espécie e verificar polimorfismos presentes nos animais. O cariótipo foi organizado em seis grupos, possuindo o primeiro sete pares submetacêntricos a metacêntricos, o segundo, seis subtelocêntricos, o terceiro, cinco acrocêntricos e o quarto, dois subgrupos de três cada um, subtelocêntricos e submetacêntricos. O quinto grupo continha os menores metacêntricos e os sexuais, X submetacêntrico e Y acrocêntrico, ao lado do terceiro grupo. No bandeamento C, o cromossomo 7 foi fortemente marcado, o G permitiu pareamento dos homólogos e o NOR marcou sete pares.
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Equus asinus; Cariótipo; Bandeamentos; Cromossomos; Kariotype; Banding; Chromosomes.
Ano: 2005 URL: http://www.alice.cnptia.embrapa.br/handle/doc/113865
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Citogenética de Paspalum. II. Determinação do número de cromossomos. Repositório Alice
FREITAS, P. M. de; CARRARO, L. R.; TAKAYAMA, S. Y.; ADAMOWSKI, E. de V.; PAGLIARINI, M. S.; BATISTA, L. A. R..
1997
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Cromossomo; Paspalum; Citogenética; Cytogenetic; Chromosomes.
Ano: 1997 URL: http://www.alice.cnptia.embrapa.br/handle/doc/44160
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Citogenética do javali em criatórios comerciais das regiões Sul e Sudeste do Brasil. Repositório Alice
MIRANDA, L.L. de; LUI, J.F..
O desenvolvimento da criação de javalis no Brasil encontra dificuldades tais como a obtenção de animais puros (2n = 36), isto é, que não sejam descendentes do cruzamento do javali com o porco doméstico. Os objetivos deste trabalho foram a caracterização citogenética do javali (Sus scrofa scrofa L.) e a determinação da freqüência cariotípica dos diferentes grupos genéticos. Foram estudados um total de 1.308 javalis de três grupos genéticos provenientes de criatórios comerciais das regiões Sul e Sudeste do Brasil, de ambos os sexos e com idade entre 5,5 a 30 meses. Os animais apresentaram número diplóide (2n) de 36 cromossomos (46,71%), de 37 (39,68%) e de 38 cromossomos (13,61%). Os dados foram submetidos à análise estatística por meio do Teste Exato de...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Sus scrofa; Cruzamento; Cromossomos; Seleção; Polimorfismo; Crossbreeding; Chromosomes; Selection; Polymorphism.
Ano: 2003 URL: http://www.alice.cnptia.embrapa.br/handle/doc/109666
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Comparative cytogenetics in different populations of the cavernicolous diplopod Pseudonannolene strinatii (Diplopoda, Pseudonannolenidae) Iheringia, Sér. Zool.
Campos,Kleber A.; Fontanetti,Carmem S..
Different populations of Pseudonannolene strinatii Mauriès, 1974 collected from three caves in Iporanga, state of São Paulo, were cytogenetically compared using techniques of conventional coloration, C-banding and silver nitrate impregnation. Specimens were morphologically similar and small cytogenetic differences were observed between the populations with relation to the distribution of constitutive heterochromatin.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Millipedes; C-banding; Karyotype; AgNOR; Chromosomes.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212013000100006
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Cytogenetic analysis of five Hypostomus species (Siluriformes, Loricariidae) Genet. Mol. Biol.
Martinez,Emanuel Ricardo Monteiro; Zawadzki,Claudio Henrique; Foresti,Fausto; Oliveira,Claudio.
In this work, we analyzed the karyotypes of five species. Hypostomus cf. heraldoi, from the Mogi-Guaçu River, had 2n = 72 chromosomes, with a nucleolar organizer region (NOR) in one chromosomal pair. Hypostomus regani, from the Mogi-Guaçu River had 2n = 72 chromosomes with NORs in two chromosomal pairs. Hypostomus sp., from the Mogi-Guaçu River basin, had 2n = 68 chromosomes, with NORs in two chromosomal pairs. Hypostomus aff. agna, from Cavalo Stream, had 2n = 74 chromosomes with NORs in two chromosomal pairs. Hypostomus cf. topavae, from Carrapato Stream, had 2n = 80 chromosomes, with NORs in two chromosomal pairs. Hypostomus species showed marked diversity in the karyotypic formula, which suggested the occurrence of several Robertsonian rearrangements...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chromosomes; Evolution; Hypostominae; Neotropical fish; NOR.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000400006
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Cytogenetic analysis of three catfish species of the family Pseudopimelodidae (Teleostei, Siluriformes) Genet. Mol. Biol.
Martinez,Emanuel Ricardo Monteiro; Nirchio,Mauro; Granado,Angel; Foresti,Fausto; Oliveira,Claudio.
Cytogenetic analyses performed in Cephalosilurus apurensis, Microglanis aff. cottoides and Pseudopimelodus bufonius revealed that the three species have 2n = 54 chromosomes: C. apurensis presented six metacentric (M), 28 submetacentric (SM), 14 subtelolocentric (ST), and six acrocentric (A) chromosomes, while M. aff. cottoides showed 10M, 32SM, 10ST and 2A, and P. bufonius had 12M, 30SM and 12ST. The nucleolus organizer regions (NORs) were present on the short arm of a middle-sized ST pair, identified as pair 19, in C. apurensis NORs were found on the short arm of a middle-sized ST (pair 23) and on the long arm of a middle-sized ST (pair 22) in M. aff. cotttoides and on the short arm of three middle-sized ST pairs, identified as pairs 9, 10 and 11, in P....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Karyotype; Chromosomes; C-banding; Ag-NOR; Fish.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000400015
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Cytogenetic data on Astyanax jacuhiensis (Characidae) in the lago Guaíba and tributaries, Brazil Neotropical Ichthyology
Pacheco,Rosiley B.; Giuliano-Caetano,Lucia; Julio Junior,Horácio F.; Dias,Ana L..
Cytogenetic analyses were performed in Astyanax jacuhiensis from lago Guaíba, Brazil. The diploid number was 50, with a karyotype composed of 8m+30sm+4st+8a chromosomes, FN = 92. The AgNORs were observed in 2 to 5 chromosomes, with intra- and interindividual variation. The sm pair 8 observed always carried NORs on the short arms, presenting size heteromorphism between homologous. Fluorescence in situ hybridization (FISH) with an 18S rDNA probe only confirmed the location of ribosomal cistrons in the sm pair 8, and heteromorphism of these regions between the homologous chromosomes. C-banding revealed the occurrence of weak C-positive heterochromatin in the pericentromeric regions of several chromosomes, in addition to more evident bands interstitially...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chromosomes; Chromomycin A3; 18S rDNA; NOR.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000300013
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Cytogenetic description of Bunocephalus doriae Boulenger, 1902 (Siluriformes: Aspredinidae) from the Paraná River (Misiones, Argentina) Neotropical Ichthyology
Fenocchio,Alberto Sérgio; Swarça,Ana Cláudia.
In this work, Bunocephalus doriae was cytogenetically analyzed. A karyotype with a diploid number of 2n= 50 comprising 6m, 10sm, 6st, and 28a (FN= 72) chromosomes was observed. The occurrence of an asymmetric karyotype with a large number of acrocentric chromosomes distinguishes this species from others the Order Siluriformes. An exclusive character observed is the first pair of subtelocentric as the largest chromosome pair of the complement. NORs detected using AgNO3 were located in the terminal regions, on the short arm of a subtelocentric chromosome pair (pair 11), in a secondary constriction. C-banding revealed heterochromatic centromeric regions on several chromosomes of the complement after C-banding. This is the first cytogenetic description of this...
Tipo: Info:eu-repo/semantics/article Palavras-chave: AgNORs; C-banding; Chromosomes.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000200022
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Cytogenetic studies in fishes of the genera Hassar, Platydoras and Opsodoras (Doradidae, Siluriformes) from Jarí and Xingú Rivers, Brazil Genet. Mol. Biol.
Milhomem,Susana Suely Rodrigues; Souza,Augusto Cesar Paes de; Nascimento,Aline Lira do; Carvalho Jr.,Jaime Ribeiro; Feldberg,Eliana; Pieczarka,Julio Cesar; Nagamachi,Cleusa Yoshiko.
We studied the karyotypes of Hassar cf. orestis and an undescribed Hassar species from the Jarí River and Opsodoras ternetzi, H. orestis and Platydoras cf. costatus from the Xingú River, all with 2n = 58. Constitutive heterochromatin is located in the centromere in most metacentric pairs; in some chromosomes this banding is not present, or it is located on the whole chromosome arm or in the distal regions. The NOR is located on a single biarmed pair at a distal region of the short arm in H. cf. orestis, H. orestis and P. cf. costatus at a distal region of the long arm in O. ternetzi and at a proximal region of the long arm in the Hassar species. In all species (except for Hassar sp.) the CMA3 analysis revealed a rich G-C region coincident with the NOR....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chromosomes; Amazon; Biodiversity; Siluriformes; Banding; Fluorochromes.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000200017
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Cytogenetic studies in six species of Scinax (Anura, Hylidae) clade Scinax ruber from northern and northeastern Brazil Genet. Mol. Biol.
Nogueira,Lídia; Zanoni,Juliani Bruna; Solé,Mirco; Affonso,Paulo Roberto Antunes de Mello; Siqueira,Sérgio; Sampaio,Iracilda.
Scinax species are still underrepresented in cytogenetic studies, mainly with respect to populations from northeastern and northern Brazil. In this study, we provide new chromosomal information on Scinax boesemani, S. camposseabrai, S. garbei, S. pachycrus, S. trilineatus and S. x-signatus, all belonging to clade S. ruber. They were collected at two locations in the Caatinga biome (northeastern Brazil) and at one in the Amazon (northern Brazil) biomes. Chromosomes were analyzed by conventional staining, C-banding, Ag-NOR staining, and fluorochrome staining. All species shared a modal diploid value of 2n = 24 and fundamental arm number (FN) of 48. Moreover, both chromosomal size and morphology were similar to other species in this Scinax clade. C-banding...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amphibians; Chromosomes; Fluorochromes; Heterochromatin; RDNA.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572015000200156
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Cytogenetic study of pure breed and hybrid wild boar (Sus Scrofa Scrofa) in Southeast and South Brazil MV&Z
Lui, Jeffrey Frederico.
From December of 1977 to March of 1999, cytogenetic analyses were carried out with 1,137 boars from South and Southeast areas of Brazil. Three genetic groups of animal were cytogenetically identified: a) 2n=36 classified as pure wild boars, b) 2n=37, hybrid and c) 2n=38, called "Javaporco", ploidy which is equal to domestic pig. Being a subspecies as the domestic pig, the wild boars present facility in this breeding allowing the happening of different genetic groups in herd where the reproductive control is not appropriate.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cytogenetic; Wild boar; Chromosomes; Sus scrofa scrofa citogenética; Javali; Cromossomos; Sus scrofa scrofa.
Ano: 2000 URL: http://www.revistamvez-crmvsp.com.br/index.php/recmvz/article/view/3351
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Cytogenetics and cytotaxonomy of Velloziaceae. Repositório Alice
MELO, N. F. de; GUERRA, M.; BENKO-ISEPPON, A. M.; MENEZES, N. L. de..
Chromosome number and other cytological features are reported from 35 species of Velloziaceae, including several african and brazilian populations. All analyzed species show areticulate interphase nuclei and prophase/prometaphase chromosomes with proximal early condensation. Most heteropycnotic blocks do not seem to correspond to heterochromatin since, at least in Vellozia patens, they do not stain differentially after C-banding procedures. Regarding the chromosome number, three main groups could be identified. The first comprised diploid species of the genera Nanuza, Vellozia and the brazilian species of Xerophyta with 2n=14 or 16; the second comprised tetraploid species with 2n=34, and included all brazilian species of subfam. Barbacenioideae; the third...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Cytotaxonomy; Heterochromation; Citotaxonomia; Cromossoma; Velloziaceae; Chromosomes.
Ano: 1997 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/132531
Registros recuperados: 70
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