Global ETD Search
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Showing 1 to 14 of 14 for “"Osteichthyes"”.
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An Analysis of Diversity in the Darter Genus, Percina (Osteichthyes, Percidae)
Made available in DSpace on 2014-12-12T01:27:39Z (GMT). No. of bitstreams: 1 7310018.pdf: 7894936 bytes, checksum: 05927dc0108bba88fe4782ef047e0569 (MD5) Previous issue date: 1972
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Distribuição, alimentação e período reprodutivo de duas espécies de Tetragonopterinae (Osteichthyes) sintópicas no rio Ubatiba (Maricá, RJ)
Results related to the longitudinal distribution, reproduction and feeding of Astyanax janeiroensis Eigenmann, 1908 and Deuterodon sp. are analised , through monthly sampling in three stations of Ubatiba river (Maricá – RJ).In general, Deuterodon sp. was more abundant than A. janeiroensis. Both …
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Contribuição à citotaxonomia dos Scorpaeniformes (Osteichthyes - Teleostei): estudos citogenéticos em espécies do litoral do Rio de Janeiro, Brasil
The order Scorpaeniformes is morphologically diverse and the only character defining the group is a bony suborbital stay extending posteriorly from the third infraorbital to the preopercle. This order shows a great number of systematic problems and the phylogenetic relationships within the group …
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Cloning and characterisation of gonadotropin-releasing hormone receptors from species in non-mammalian vertebrate classes : amphibia and osteichthyes
… the Amphibian, Xenopus laevis and the Osteichthyes, Carassius auratus (goldfish). Using degenerate primers designed to the mammalian GnRH receptors two putative receptor subtypes were identified from both X. laevis (X/a.1 and X/b.1) and goldfish (GfA and GfB) genomic DNA. The …
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Distribuição longitudinal, dieta alimentar e ciclo reprodutivo de Pimelodella lateristriga (Osteichthyes, Siluroidei) no rio Ubatiba, Maricá, Rio de Janeiro
Aspects in the longitudinal distribution, feeding habits and reproductive biology of Pimelodella lateristriga are analysed in the Ubatiba river basin (Maricá-RJ). Their distribution has been studied in nine points along the Ubatiba river basin, Pimelodella lateristriga has sporadically occurred …
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Distribuição longitudinal, ocupação ambiental, alimentação e época reprodutiva de quatro espécies de Cyprinodontiformes (Osteichthyes) coexistentes no rio Ubatiba (Maricá, RJ)
Aspects of biology of Phalloceros caudimaculatus (Hensel, 1868); Poecilia vivipara Bloch & Schneider, 1801; Phalloptychus Januarius (Hensel, 1868 ) and Jenynsia lineata (Jenyns, 1842) were analysed through monthly captures at four sites along the Ubatiba River and one site in the Maricá Lagoon, the …
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Ocorrência de Gerreidae (Osteichthyes, Perciformes) no canal de Camboatá, sistema lagunar de Itaipu-Piratininga, RJ: abundância relativa e cronologia alimentar
This paper contributes to the knowledge of Gerreidae species participation in tropical lagoon environments, with special reference to the Camboatá channel that interconnects the lagoon system Itaipu-Piratininga. The main objective being the analysis of the temporal distribution, the feeding …
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Desenvolvimento larval de quatro espécies de Symphurus Rafinesque, 1810 (Osteichthyes, Cynoglossidae) e sua distribuição na costa sudeste/sul do Brasil (23ºS-29ºS)
Morphological and osteological development of four species of Symphurus larvae and juveniles are described, using the ichthyoplankton samples collected in the southeastern Brazilian Bight (from 23° S to 29° S). Larvae of four species are identified based on distribution pattern of pigments on the …
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Considerações sobre a biologia de Haemulon steindachneri (Jordan & Gilbert, 1882)- Pisces, Osteichthyes - ocorrente na região da Central Nuclear Almirante Álvaro Alberto, em Angra dos Reis, RJ
The data used in this work, are the result of the Project for the Analysis of the Fauna and Flora in the area of the Almirante Álvaro Alberto Nuclear Plant, in Angra dos Reis, completed before the plant had begun operation. The collection of specimens, showed the H. steindachneri as the most …
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Tetrachlorobiphenyl metabolism, toxicity, and regulation of cytochrome P50 expression in a marine teleost fish
The effects of 3,3',4,4'-tetrachlorobiphenyl (TCB) were examined in the marine fish scup (Stenotomus chrysops), focusing on the interactions between TCB and the CYP 1 A 1 enzyme system. A low TCB dose (0.1 mg/kg) elicited strong and sustained induction of hepatic CYP1A1 mRNA, protein content, and …
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Sexual patterns of monooxygenase function in the liver of marine teleosts and the regulation of activity by estradiol
Sex differences in hepatic microsomal cytochrome P-450 and monooxygenase activities were investigated in the marine teleosts scup (Stenotomus chrysops) and winter flounder (Pseudopleuronectes americanus). Microsomal cytochrome P-450 content per unit proteln was 3-6 tlmes lower in gonadally mature …
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Localization of Cytoskeletal Elements in Teleost Retinal Pigment Epithelium
The G.3.5 antigen (Mr = 100,000) has been localized in brain, cerebellum, skeletal, cardiac, and smooth muscle tissues using the G.3.5 mAb, and has been described as an IFAP on the basis of its co-localization and co-isolation with desmin. Through biochemical analysis, the G.3.5 antigen was found …