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| Registros recuperados: 32 | |
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| Veneza,Ivana; Silva,Raimundo da; Silva,Danillo da; Gomes,Grazielle; Sampaio,Iracilda; Schneider,Horacio. |
| ABSTRACT Lutjanidae comprises 21 genera and 135 species widespread throughout Atlantic, Indian and Pacific oceans. Nonetheless, the phylogenetic relationships of Lutjaninae remain uncertain. Furthermore, phylogenetic hypotheses for Lutjanus alexandrei, an endemic species from northeastern Brazilian coast, in Lutjanidae are absent so far. Therefore, we carried out multiloci analyses, combining both mitochondrial and nuclear DNA sequences in Lutjaninae species from Western Atlantic focusing on the controversial relationships among Lutjanus, Rhomboplites, and Ocyurus. Besides, we determined the phylogenetic position and dated the origin of L. alexandrei. The phylogenetics trees based on the 4.4 kb for 11 species corroborated the synonym among Lutjanus and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: DNA; Lutjaninae; Phylogeny Molecular; Systematics; Taxonomy. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000100211 |
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| Maciel,Cristiana R; Quadros,Manoel L; Abrunhosa,Fernando; Bastos,Sandra; Schneider,Horacio; Sampaio,Iracilda. |
| The freshwater prawn Macrobrachium equidens, which is native species of the Indo-Pacific Region, was recorded for the first time on the Amazon coast of Brazil. This species was found to inhabit the same environment as two native Macrobrachium species, M. amazonicum and M. acanthurus, and is morphologically very similar to the latter. The identification of the species was confirmed by the genetic analysis of sequences of the mitochondrial Cytochrome Oxidase (COI) gene. A detailed description of the morphological features and reproductive biology of M. equidens in this new environment is presented. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crustacean; Caeté Estuary; Invasive species; Mitochondrial COI gene; Reproductive biology. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000200013 |
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| Gomes,Grazielle; Sampaio,Iracilda; Schneider,Horacio. |
| The present study focus on the mitochondrial control region to investigate phylogeographic patterns and population structure in Lutjanus purpureus, and to evaluate the genetic similarity between L. purpureus and L. campechanus. For the initial analysis, 810 base pairs sequence from control region were obtained from 239 specimens of L. purpureus collected from four localities off the Brazilian coast. The results revealed the presence of a single panmictic population characterized by high values of genetic diversity. The 299 base pairs hypervariable portion were used for the combined analysis of L. purpureus and L. campechanus, being 275 haplotypes identified in the 414 specimens. Phylogenetic tree and haplotype network did not indicate phylogeographic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Control region; Lutjanus purpureus. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000400013 |
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| Iketani,Gabriel; Pimentel,Luciana; Silva-Oliveira,Glaúcia; Maciel,Cristiana; Valenti,Wagner; Schneider,Horacio; Sampaio,Iracilda. |
| The giant river prawn, Macrobrachium cf. rosenbergii, is one of the most cultivated freshwater prawns in the world and has been introduced into more than 40 countries. In some countries, this prawn is considered an invasive species that requires close monitoring. Recent changes in the taxonomy of this species (separation of M. rosenbergii and M. dacqueti) require a re-evaluation of introduced taxa. In this work, molecular analyses were used to determine which of these two species was introduced into Brazil and to establish the geographic origin of the introduced populations that have invaded Amazonian coastal waters. The species introduced into Brazil was M. dacqueti through two introduction events involving prawns originating from Vietnam and either... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioinvasion; Exotic species; Giant river prawn; Macrobrachium dacqueti; COI; 16S rRNA; Amazonia. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000100025 |
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| Vallinoto,Marcelo; Araripe,Juliana; Rego,Péricles S. do; Tagliaro,Claudia H.; Sampaio,Iracilda; Schneider,Horacio. |
| The Saguinus represent the basal genus of the Callitrichinae subfamily. Traditionally this genus is divided into three groups: Hairy, Mottled and Bare-face, however, molecular data failed to validate these groups as monophyletic units, as well as raised some subspecies to the species status. This is the case of the former subspecies Saguinus midas midas and S. midas niger, which are now considered as different species. In the present study, we sequenced a portion of the D-loop mtDNA region in populations from the East bank of the Xingu and from both banks of the Tocantins river, in order to test the effectiveness of large rivers as barriers to the gene flow in Saguinus. According to our results, the populations from the East and West banks of the Tocantins... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Primates; Saguinus niger; D-loop; MtDNA; Tocantins river. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000200005 |
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| Registros recuperados: 32 | |
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