Teleosts
Mostrando 13-24 de 82 artigos, teses e dissertações.
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13. Chlorpheniramine facilitates inhibitory avoidance in teleosts submitted to telencephalic ablation
The present study investigated the involvement of H(1) histaminegic receptor on the acquisition of inhibitory avoidance in Carassius auratus submitted to telencephalic ablation. The fish were submitted to telencephalic ablation 5 days before the experiment. The inhibitory avoidance procedure included 1 day for habituation, 3 days for training composed of 3 t
Brazilian Journal of Medical and Biological Research. Publicado em: 30/04/2008
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14. Reproduction of Leptodactylus ocellatus (Anura, Leptodactylidae), a species with maternal care to the offspring / Reprodução de Leptodactylus ocellatus (Anura, Leptodactylidae), uma espécie com cuidado maternal à prole
In Leptodactylus ocellatus, the tadpoles form schools that are protected by the females until the end of the larval phase. Here we described aspects of the reproduction of this species in areas of Cerrado in the state of Minas Gerais (Brazil). We determined in the field the reproductive period, spawning places, duration of the parental care and differences i
Publicado em: 2008
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15. Analise histoquimica, ultra-estrutural e morfometrica do efeito de drogas anti-inflamatorias não esteroides (naproxeno e indometacina) sob a regeneração da nadadeira caudal de teleosteo, Cyprinus carpio (carpa) / Histochemical, ultra-structural and morphometric analysis of the effect of nonsteroidal anti-inflammatory drugs (naproxen and indomethacin) under the tail fin regeneration of teleostm Cyprinus carpio (carp)
The fins of teleosts, when partially amputated, they pass for a quick regenerative process called epimorphic regeneration, characterized by the formation of a mass of undifferentiated cells, by the differentiation of these cells, by the synthesis and the deposition of the extracellular matrix and morphological restoration. The regeneration of the fin is extr
Publicado em: 2008
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16. Histology of the liver of Oligosarcus jenynsii (Ostariophysi, Characidae) from Los Padres Lake, Argentina
The liver is an organ notable for its sensitivity to a great variety of environmental factors. It is composed of a parenchyma divided into irregular lobules by the exocrine pancreas or hepatopancreas; the pancreatic cells are arranged around a branch of the portal vein. The hepatocytes are radially arranged in cords around a central sinusoid. The liver histo
Iheringia. Série Zoologia. Publicado em: 2006-06
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17. A DISTRIBUIÇÃO ESPACIAL E A COMPOSIÇÃO DAS CAPTURAS DE ELASMOBRÂNQUIOS PELA FROTA DE EMALHE DE PASSO DE TORRES - SC, NA COSTA SUL DO BRASIL, NO VERÃO DE 2004/2005.
The elasmobranch fishes are exploited by many fisheries gears in Rio Grande do Sul state. The purposes of this study were to describe the inshore fishery of Passo de Torres (SC), south frontier with Rio Grande do Sul state, to assess the elasmobranchs catches and its composition, and to deliniate their spatial distribution in south continental shelf. Thirty-
Publicado em: 2006
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18. Histology of the digestive tract of surubim-pintado (Pseudoplatystoma coruscans - Agassiz, 1829) / Histologia do trato digestório do surubim-pintado (Pseudoplatystoma coruscans - Agassiz, 1829)
Pintado (Pseudoplatystoma coruscans), also commonly called surubim, is one of the most appreciated fish by the Brazilian consumer market, due to the excellent filet quality. However, works on the morphology of their digestive tract are scarce. In this work, the histological description of the esophagus, stomach and intestine of pintado, seeks to contribute a
Publicado em: 2006
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19. Morpho-functional characteristics of sex reversal in Synbranchidae (Teleostei: Synbranchiformes) / Perfil morfo-funcional da inversão de sexo em Synbranchidae (Teleostei: Synbranchiformes)
Teleost fishes exhibit several sexual patterns during their ontogeny, in which the gonads change into functional ovaries or testes. In distinct Orders, both gonochoristic and hermaphrodite species, simultaneous as well as sequential or consecutive, can be found. In sequential hermaphroditism (protandrous or protogynous), sex change in adult individuais invol
Publicado em: 2006
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20. DistribuiÃÃo e abundÃnia relativa de peixes e crustÃceos capturados no programa REVIZEE/Score-NE na plataforma externa e talude da costa do Nordeste do Brasil
From 27/10/1997 to 19/11/2000, as part of the REVIZEE1 Program, 27 exploratory fishing cruises were done along the external margin of the continental shelf and slope, off northeast Brazil, using bottom longline and traps as fishing gears. The relative abundance of the species caught was analyzed through the Catch per Unit of Effort (CPUE), as the number of s
Publicado em: 2005
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21. Sciaenidae fish of the Caeté River estuary, Northern Brazil: mitochondrial DNA suggests explosive radiation for the Western Atlantic assemblage
Sciaenids are fish which are normally abundant in tropical estuaries of the western Atlantic. Studies on the Caeté river estuary in the northern Brazilian state of Pará have revealed that in this area Sciaenidae is the dominant family, comprising almost 50% of all teleosts sampled. In this paper we present the results of the first phylogenetic study on Sou
Genetics and Molecular Biology. Publicado em: 2004
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22. Metabolic adjustments in Satanoperca aff. jurupari (Perciformes: Cichlidae)
In this paper, we describe the enzyme levels and isozyme distribution in skeletal and heart muscle of Satanoperca aff. jurupari, (Cichlidae, subgroup Geophaginae). LDH and CS were measured in skeletal and heart muscle. Starch gel electrophoresis was used to determine the isozyme/allozyme patterns in different tissues; LDH, MDHs, PGM, PGI, ADH, G-6-PDH and SO
Genetics and Molecular Biology. Publicado em: 2003
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23. Estudo do efeito do naproxeno na regeneração da nadadeira caudal do peixe teleosteo Cyprinus carpio (carpa)
The fins of teleosts show a very fast capacity for regeneration, what make them one important and appropriate biologic model for study of the drugs that can affect their development. The rays of fins are formed, for the most part, of collagen and glycosaminoglycans and, as showed on literature reports, some antiinflammatory drugs, steroidal and nonsteroidal,
Publicado em: 2003
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24. Biologia reprodutiva de três espécies simpátricas de peixes neotropicais: Pimelodus maculatus Lacépède (Siluriformes, Pimelodidae), Leporinus amblyrhynchus Garavello & Britski e Schizodon nasutus Kner (Characiformes, Anostomidae) do recém-formado Reservatório de Miranda, Alto Paraná
The reproductive activity parameters of the teleosts Pimelodus maculatus Lacépède, 1803, Leporinus amblyrhynchus Garavello & Britski, 1987 and Schizodon nasutus Kner, 1859 was evaluated at a newly formed reservoir in the Araguari River, Paraná River basin, Southeast Brazil. The fishes were captured by gill nets bimonthly from November 1997 to November 199
Revista Brasileira de Zoologia. Publicado em: 2002-09