Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 6
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
A history of the biogeography of Amazonian fishes Neotropical Ichthyology
Dagosta,Fernando C. P.; Pinna,Mário C. C. de.
ABSTRACT The history of knowledge about Amazonian biogeography is as rich as its fish community, and a fascinating theme of study in itself. Several current paradigms and controversies about Amazonian fish biogeography are rooted in principles dating from the second half of the 18th to the first half of the 19th centuries. The present work establishes a relationship between current biogeographical ideas and their old predecessors, on the basis of a chronologically-oriented historical continuity analysis. The advent of evolutionary theory has not contributed significantly to a transformation of the knowledge on the biogeography of Amazonian fishes. On the other hand, the two main schools of biogeographical thought (dispersalist and vicariant) had major...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon; Biodiversity; Ichthyology; Neotropical; South America.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000300303
Imagem não selecionada

Imprime registro no formato completo
A new species of Hyphessobrycon Durbin (Characiformes: Characidae) from the middle rio São Francisco and upper and middle rio Tocantins basins, Brazil, with comments on its biogeographic history Neotropical Ichthyology
Dagosta,Fernando C. P.; Marinho,Manoela M. F.; Camelier,Priscila.
A new species of Hyphessobrycon Durbin is described from tributaries of the rio Grande (rio São Francisco basin) draining east to the Serra Geral de Goiás, of the rio São Domingos (upper rio Tocantins basin) and rio do Sono basins (middle rio Tocantins basin). Hyphessobrycondiastatos can be diagnosed from its congeners by the absence of humeral spot, 15-18 branched anal-fin rays, 1-3 maxillary conical to tricuspid teeth, a relatively well-defined dark caudal-peduncle spot, and elongation of dorsal- and anal-fin rays in mature males. The biogeographical significance of the distribution of the new species is evaluated and discussed.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Adipose fin; Biogeography; Headwater capture; Serra Geral de Goiás; Sexual dimorphism.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000200365
Imagem não selecionada

Imprime registro no formato completo
A new species of Moenkhausia Eigenmann (Characiformes: Characidae) from the rio Arinos basin, Brazil Neotropical Ichthyology
Dagosta,Fernando C. P.; Marinho,Manoela M. F..
ABSTRACT A new species of Moenkhausia is described from the rio Arinos drainage, rio Tapajós basin, Mato Grosso, Brazil. The new species is diagnosed from all congeners, except M . hemigrammoides , M . nigromarginata , and Moenkhausia rubra by having intense diffuse dark pigmentation on the dorsal and anal fin-rays. The new species can be distinguished from the above mentioned species by the combination of 20-23 branched anal-fin rays, presence of a vertically elongate roughly rectangular humeral spot surpassing the lateral line ventrally, absence of a well-defined black spot on the distal portion of the dorsal fin and lack of a series of longitudinal dark zigzag stripes on body. The new species is herein described along with a report and discussion of a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Headwaters; Juruena; Moenkhausia nigromarginata; Moenkhausia rubra; Tapajós.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000200202
Imagem não selecionada

Imprime registro no formato completo
Biogeography of Amazonian fishes: deconstructing river basins as biogeographic units Neotropical Ichthyology
Dagosta,Fernando C. P.; Pinna,Mário de.
ABSTRACT Biogeography of Amazonian fishes (2,500 species in vastly disjunct lineages) is complex and has so far been approached only partially. Here, we tackle the problem on the basis of the largest database yet on geographical distribution and phylogenetic relationships of Amazonian fishes, including all information available. Distributions of 4,095 species (both Amazonian and outgroups) and 84 phylogenetic hypotheses (comprising 549 phylogenetically-informative nodes) were compiled, qualified and plotted onto 46 areas (29 Amazonian and 17 non-Amazonian). The database was analyzed with PAE, CADE, BPA and BPA0, yielding largely congruent results and indicating that biogeographic signal is detectable on multiple dimensions of fish distribution, from single...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biotic dispersal; Composite areas; Historical Biogeography; Temporal congruence; Widespread taxa.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000300209
Imagem não selecionada

Imprime registro no formato completo
Hemigrammus ataktos: a new species from the rio Tocantins basin, central Brazil (Characiformes: Characidae) Neotropical Ichthyology
Marinho,Manoela M. F.; Dagosta,Fernando C. P.; Birindelli,José L. O..
A new species of Hemigrammus is described from the middle rio Tocantins basin, central Brazil. The new species can be distinguished from all congeners by having a black midlateral stripe on the body extending from the posterior margin of the eye to the median caudal-fin rays. Mature males possess dorsal-, pelvic-, and anal-fin rays elongate, features that also help to recognize the new species. Although the new species is described in Hemigrammus, some specimens present a complete series of pored scales in the lateral line. A discussion about the generic allocation of the new species is presented.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lateral line; Neotropical fish; Systematics; Taxonomy; Tetras.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000200257
Imagem não selecionada

Imprime registro no formato completo
Moenkhausia rubra, a new species from rio Juruena, upper rio Tapajós basin, Brazil (Characiformes: Characidae) Neotropical Ichthyology
Pastana,Murilo N. L.; Dagosta,Fernando C. P..
Moenkhausia rubra, new species, is described from the upper rio Juruena, rio Tapajós basin, Mato Grosso, Brazil. The new species is distinguished from its congeners, except M. hemigrammoidesand M. nigromarginata, by the dark pigmentation on the anteriormost rays of both dorsal and anal fins. Moenkhausia rubrais distinguished from the aforementioned species by the number of branched anal-fin rays 17-20 (vs. 20-25), presence of a dark blotch on the caudal peduncle extending to middle caudal-fin rays, absence of longitudinal black zigzag stripes between longitudinal rows of scales on body, and other details of coloration.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon; Moenkhausia nigromarginata; Neotropical fishes; Ostariophysi; Tetra.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000200389
Registros recuperados: 6
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional